Fair Value Measurement of Financial Instruments [Abstract]
Fair Value Measurement of Financial Instruments [Abstract]
Fair Value, by Balance Sheet Grouping
Fair Value, by Balance Sheet Grouping [Table Text Block]
Fair Value Measurement of Financial Instruments
Fair Value Disclosures [Text Block]
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Nonvested Share Activity
Schedule of Nonvested Share Activity [Table Text Block]
Schedule of Outstanding Employee Deferred Stock Awards
Schedule of Outstanding Employee Deferred Stock Awards [Table Text Block]
Schedule of Outstanding Employee Deferred Stock Awards [Table Text Block]
Business Combinations [Abstract]
Schedule of acquired properties
Schedule of Business Acquisitions, by Acquisition [Table Text Block]
Schedule of Business Acquisitions, by Acquisition [Table]
Schedule of Business Acquisitions, by Acquisition [Table]
Business Acquisition [Axis]
Business Acquisition [Axis]
Business Acquisition, Acquiree [Domain]
Business Acquisition, Acquiree [Domain]
Arlington Gateway [Member]
Arlington Gateway [Member]
Arlington Gateway [Member]
Wayside, 5 and 15 [Member]
Wayside Road, 5 and 15 [Member]
Wayside Road, 5 and 15 [Member]
20/20 [Member]
Twenty Twenty [Member]
Twenty Twenty [Member]
5301 Maryland Way [Member]
Five Three Zero One Maryland Way [Member]
Five Three Zero One Maryland Way [Member]
4685 Investment Drive [Member]
Four Six Eight Five Investment Drive [Member]
Four Six Eight Five Investment Drive [Member]
Royal Lane [Member]
Royal Lane [Member]
Royal Lane [Member]
Business Acquisition [Line Items]
Business Acquisition [Line Items]
Rentable Square Feet
Area of Real Estate Property
Acreage
Area of Land
Number of real estate properties
Number of Real Estate Properties
Number of unconsolidated joint venture partnerships
Number Of Unconsolidated Joint Venture Partnerships
Number Of Unconsolidated Joint Venture Partnerships
Percentage Leased as of Acquisition
Percentage of Leased Real Estate Properties
Percentage of Leased Real Estate Properties
Purchase Price
Business Acquisition, Cost of Acquired Entity, Purchase Price
Amount purchased of remaining minority interest
Payments to Acquire Interest in Joint Venture
Loss on consolidation
Gain (Loss) On Consolidation
The intial gain/loss upon acquisition of an entity which was previously unconsolidated
Line of Credit and Notes Payable [Abstract]
Line of Credit and Notes Payable [Abstract]
Schedule of Long-term Debt Instruments [Table]
Schedule of Long-term Debt Instruments [Table]
Long-term Debt, Type [Axis]
Long-term Debt, Type [Axis]
Long-term Debt, Type [Domain]
Long-term Debt, Type [Domain]
Senior Notes [Member]
Senior Notes [Member]
Unsecured Debt [Member]
Unsecured Debt [Member]
Debt Instrument [Axis]
Debt Instrument [Axis]
Debt Instrument, Name [Domain]
Debt Instrument, Name [Domain]
$350 Million Senior Notes [Member]
Senior 350 Million Notes [Member]
Senior 350 Million Notes [Member]
$500 Million Unsecured Line of Credit [Member]
Unsecured 500 Million Line of Credit [Member]
Unsecured 500 Million Line of Credit [Member]
Derivative Instrument Risk [Axis]
Derivative Instrument Risk [Axis]
Derivative Contract Type [Domain]
Derivative Contract Type [Domain]
Forward Starting Interest Rate Swap [Member]
Forward Starting Interest Rate Swap [Member]
Forward Starting Interest Rate Swap [Member]
Forward Starting Rate Swap 1 [Member]
Forward Starting Rate Swap 1 [Member]
Forward Starting Rate Swap 1 [Member]
Forward Starting Rate Swap 2 [Member]
Forward Starting Rate Swap 2 [Member]
Forward Starting Rate Swap 2 [Member]
Debt Instrument [Line Items]
Debt Instrument [Line Items]
Percentage ownership in operating partnership
Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest
Face amount of debt instument
Debt Instrument, Face Amount
Rate
Debt Instrument, Interest Rate, Stated Percentage
Proceeds from debt
Proceeds from Issuance of Long-term Debt
Discount on notes payable
Debt Instrument, Unamortized Discount
Term of notes
Debt Instrument, Term of Debt Agreement
Debt Instrument, Term of Debt Agreement
Number of Interest Rate Derivatives Settled During the Period
Number of Interest Rate Derivatives Settled During the Period
Number of Interest Rate Derivatives Settled During the Period
Notional amount of forward starting swap agreements
Notional Amount of Interest Rate Derivatives
Settlement of forward starting interest rate swaps
Deferred Gain/(Loss) on Settlement of Interest Rate Derivative
Gain/(Loss) on settlement of interest rate derivative which is recorded as component of accumulated other comprehensive income and recognized as offset/increase to interest expense over the life of the respective underlying debt facility.
Net borrowings
Line of Credit Facility, Increase (Decrease) for Period, Net
Repayments
Repayments of Long-term Debt
Borrowing capacity of line of credit
Line of Credit Facility, Current Borrowing Capacity
Interest payments on debt facilities
Interest Paid, Net
Interest Costs Capitalized
Interest Costs Capitalized
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies
Commitments and Contingencies Disclosure [Text Block]
Guarantor and Non-Guarantor Financial Information [Abstract]
Guarantor and Non-Guarantor Financial Information [Abstract]
Schedule of Condensed Financial Statements [Table]
Schedule of Condensed Financial Statements [Table]
Legal Entity [Axis]
Legal Entity [Axis]
Entity [Domain]
Entity [Domain]
Issuer [Member]
Subsidiary Issuer [Member]
Guarantor [Member]
Guarantor [Member]
The registrant that guarantees the debt issued by another entity it controls, either directly or indirectly. The usual condition for control is ownership of a majority (over 50%) of the outstanding voting stock. The power to control may also exist with a lesser percentage of ownership, for example, by contract, lease, agreement with other stockholders or by court decree.
Non-Guarantor Subsidiaries [Member]
Non-Guarantor Subsidiaries [Member]
Eliminations [Member]
Consolidation, Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Condensed Financial Statements, Captions [Line Items]
Revenues:
Revenues [Abstract]
Rental income
Operating Leases, Income Statement, Lease Revenue
Tenant reimbursements
Tenant Reimbursements
Property management fee revenue
Management Fees Revenue
Total revenues
Revenues
Expenses:
Operating Expenses [Abstract]
Property operating costs
Direct Costs of Leased and Rented Property or Equipment
Depreciation
Depreciation, Continuing Operations
The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives, from continuing operations.
Amortization
Adjustment for Amortization, Continuing Operations
The aggregate amount of recurring noncash expense charged against earnings in the period to allocate the cost of assets over their estimated remaining economic lives, from continuing operations.
General and administrative
General and Administrative Expense
Operating Expenses
Operating Expenses
Real estate operating income
Operating Income (Loss)
Other income (expense):
Nonoperating Income (Expense) [Abstract]
Interest expense
Interest Expense
Interest and other income/(expense)
Other Nonoperating Income (Expense)
Litigation settlement expense
Litigation Settlement, Expense
Litigation settlement recovery/(expense)
Gain (Loss) Related to Litigation Settlement
Net recoveries of casualty loss
Net Loss (Gain) from Casualty Event
The net charge/recovery against earnings in the period related to a fire, explosion, or natural disaster (hurricane, earthquake).
Equity in income of unconsolidated joint ventures
Income (Loss) from Equity Method Investments
Nonoperating Income (Expense)
Nonoperating Income (Expense)
Income from continuing operations
Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest
Discontinued operations:
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent [Abstract]
Operating income
Disposal Group, Including Discontinued Operation, Operating Income (Loss)
Impairment loss
Disposal Group, Including Discontinued Operation, Loss on Write Down
Disposal Group Including Discontinued Operation Loss on Write Down
Gain/(loss) on sale of real estate assets
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax
Income from discontinued operations
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest
Net income
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest
Less: Net income attributable to noncontrolling interest
Income (Loss) from Continuing Operations Attributable to Noncontrolling Interest
Net income attributable to Piedmont
Net Income (Loss) Attributable to Parent
Income Statement [Abstract]
Statement [Table]
Statement [Table]
Statement [Line Items]
Statement [Line Items]
Interest and other income/(expense)
Per share information – basic and diluted:
Earnings Per Share, Basic and Diluted [Abstract]
Income from continuing operations (in dollars per share)
Income (Loss) from Continuing Operations, Per Basic and Diluted Share
Income/(loss) from discontinued operations (in dollars per share)
Income (Loss) from Discontinued Operations, Net of Tax, Per Basic and Diluted Share
Net income available to common stockholders (in dollars per share)
Earnings Per Share, Basic and Diluted
Weighted-average common shares outstanding – basic
Weighted Average Number of Shares Outstanding, Basic
Weighted-average common shares outstanding – diluted
Weighted Average Number of Shares Outstanding, Diluted
Loss Contingencies [Table]
Capital Expenditures by Type [Axis]
Capital Expenditures By Type [Axis]
Capital Expenditures By Type [Axis]
Capital Expenditures by Type [Domain]
Capital Expenditures By Type [Domain]
[Domain] for Capital Expenditures By Type [Axis]
Non-Incremental Capital Expenditures [Member]
NonIncremental Capital Expenditures [Member]
NonIncremental Capital Expenditures [Member]
Incremental Capital Expenditures [Member]
Incremental Capital Expenditures [Member]
Incremental Capital Expenditures [Member]
Loss Contingency Nature [Axis]
Loss Contingency Nature [Axis]
Loss Contingency, Nature [Domain]
Loss Contingency, Nature [Domain]
Tenant Audits and Disputes [Member]
Tenant Audits and Disputes [Member]
Tenant Audits and Disputes [Member]
Letter of Credit Agreements by Expiration Date [Axis]
Letter of Credit Agreements by Expiration Date [Axis]
Letter of Credit Agreements by Expiration Date [Domain]
Letter of Credit Agreements by Expiration Date [Domain]
Letter of Credit 1, July 2013 [Member]
Letter of Credit 1, July 2013 [Member]
Letter of Credit 1, July 2013 [Member]
Letter of Credit 2, July 2013 [Member]
Letter of Credit 2, July 2013 [Member]
Letter of Credit 2, July 2013 [Member]
Letter of Credit 3, July 2013 [Member]
Letter of Credit 3, July 2013 [Member]
Letter of Credit 3, July 2013 [Member]
Loss Contingencies [Line Items]
Potential obligations for tenant improvements
Commitment to Provide Funding to Tenants for Capital Improvements
Commitment to Provide Funding to Tenants for Capital Improvements
Tenant audit dispute expense
Loss Contingency, Loss in Period
Letters of credit outstanding
Letters of Credit Outstanding, Amount
Letter of credit, renewal period
Letter of Credit Renewal Period
Letter of Credit Renewal Period
Subsequent Events [Abstract]
Other Subsequent Events
Subsequent Events [Text Block]
Discontinued Operations and Disposal Groups [Abstract]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Table]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Table]
Property, Plant and Equipment, Type [Axis]
Property, Plant and Equipment, Type [Axis]
Property, Plant and Equipment, Type [Domain]
Property, Plant and Equipment, Type [Domain]
Land [Member]
Land [Member]
Building and improvements [Member]
Building and Building Improvements [Member]
Construction in progress [Member]
Construction in Progress [Member]
Disposal Group Name [Axis]
Disposal Group Name [Axis]
Disposal Groups, Including Discontinued Operations, Name [Domain]
Disposal Groups, Including Discontinued Operations, Name [Domain]
350 Spectrum Loop building [Member]
SPECTRUM LOOP 350 [Member]
SPECTRUM LOOP 350 [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Real estate assets held for sale, net
Disposal Group, Including Discontinued Operation, Property, Plant, and Equipment, Net
Accumulated depreciation (building improvements)
Disposal Group, Including Discontinued Operation, Accumulated Depreciation, Property Plant and Equipment
Disposal Group, Including Discontinued Operation, Accumulated Depreciation, Property Plant and Equipment
Real estate assets held for sale, net
Real Estate Held-for-sale, Net
Net carrying amount as of the balance sheet date of investments in land, buildings, finite-lived intangibles, and construction in progress classified as held for sale.
Straight-line rent
Disposal Group, Including Discontinued Operation, Straight-line Rent
Disposal Group, Including Discontinued Operation, Straight-line Rent
Deferred lease costs, less accumulated amortization of $78 and $0 as of September 30, 2013 and December 31, 2012, respectively
Disposal Group, Including Discontinued Operation, Deferred Lease Costs, Net
Disposal Group, Including Discontinued Operation, Deferred Lease Costs, Net
Accumulated amortization on deferred lease costs
Disposal Group, Including Discontinued Operation, Deferred Lease Costs, Accumulated Amortization
Disposal Group, Including Discontinued Operation, Deferred Lease Costs, Accumulated Amortization
Other assets held for sale, net
Disposal Group, Including Discontinued Operation, Other Assets
Organization [Abstract]
Organization Abstract
Schedule of Real Estate Properties [Table]
Schedule of Real Estate Properties [Table]
Real Estate, Type of Property [Axis]
Real Estate, Type of Property [Axis]
Real Estate Properties [Domain]
Real Estate Properties [Domain]
Office properties [Member]
Office properties [Member]
Unconsolidated Joint Venture [Member]
Unconsolidated Joint Venture [Member]
Real Estate Properties [Line Items]
Real Estate Properties [Line Items]
Number of wholly-owned subsidiaries
Number Of Wholly Owned Management Subsidiaries
Number Of Wholly Owned Management Subsidiaries
Percentage ownership by sole general partner
Percentage ownership by sole limited partner
Limited Liability Company (LLC) or Limited Partnership (LP), Members or Limited Partners, Ownership Interest
Number of metropolitan areas
Number of Metropolitan Areas In Which Entity Operates
Number of Metropolitan Areas In Which Entity Operates
Square footage of real estate property
Acquisitions
Business Combination Disclosure [Text Block]
Condensed Consolidated Balance Sheets
Schedule of Condensed Balance Sheet [Table Text Block]
Condensed Consolidated Statements of Income
Schedule of Condensed Income Statement [Table Text Block]
Condensed Consolidated Statements of Cash Flows
Schedule of Condensed Cash Flow Statement [Table Text Block]
Subsequent Event [Table]
Subsequent Event [Table]
Subsequent Event Type [Axis]
Subsequent Event Type [Axis]
Subsequent Event Type [Domain]
Subsequent Event Type [Domain]
Subsequent Event [Member]
Subsequent Event [Member]
Subsequent Event [Line Items]
Subsequent Event [Line Items]
Dividends declared (in dollars per share)
Common Stock, Dividends, Per Share, Declared
Amount authorized for stock repurchase plan
Stock Repurchase Program, Authorized Amount
Period for stock repurchase plan
Stock Repurchase Program, Period in Force
Earnings Per Share [Abstract]
Earnings Per Share
Earnings Per Share [Text Block]
Statement of Stockholders' Equity [Abstract]
Statement, Equity Components [Axis]
Equity Components [Axis]
Equity Component [Domain]
Common Stock [Member]
Additional Paid-In Capital [Member]
Additional Paid-in Capital [Member]
Cumulative Distributions in Excess of Earnings [Member]
Retained Earnings [Member]
Other Comprehensive Loss [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Non-controlling Interest [Member]
Noncontrolling Interest [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest
Balance (in shares)
Common Stock, Shares, Outstanding
Shares repurchases as part of an announced plan
Stock Repurchased and Retired During Period, Value
Shares repurchases as part of an announced plan (in shares)
Stock Repurchased and Retired During Period, Shares
Offering costs associated with the issuance of common stock
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs
Dividends to common stockholders ($0.80 (YTD 2012) and $0.60 (YTD 2013) per share), distributions to noncontrolling interest, and dividends reinvested
Dividends, Minority Interest (Decrease) From Distributions to Noncontrolling Interest Holders and Stock Issued During Period Value Dividend Reinvestment Plan
Sum of a) Equity impact of aggregate cash, stock, and paid-in-kind dividends declared for all securities (common shares, preferred shares, etc.) during the period, b) Decrease in noncontrolling interest balance from payment of dividends or other distributions by the non-wholly owned subsidiary or partially owned entity, included in the consolidation of the parent entity, to the noncontrolling interest holders, and c) Value of stock issued during the period from a dividend reinvestment plan (DRP). A dividend reinvestment plan allows the holder of the stock to reinvest dividends paid to them by the entity on new issues of stock by the entity.
Shares issued and amortized under the 2007 Omnibus Incentive Plan, net of tax
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures
Shares issued and amortized under the 2007 Omnibus Incentive Plan, net of tax (in shares)
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures
Shares issued and amortized under the 2007 Omnibus Incentive Plan, net of tax
Adjustments to Additional Paid in Capital, Share-based Compensation, Nonvested Shares, Requisite Service Period Recognition
Net income attributable to noncontrolling interest
Net Income (Loss) Attributable to Noncontrolling Interest
Net income attributable to Piedmont
Other comprehensive income (loss)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent
Balance
Balance (in shares)
Schedule of Debt Instruments [Table]
Schedule of Debt Instruments [Table]
Schedule of Debt Instruments [Table]
Interest Rate by Type [Axis]
Interest Rate by Type [Axis]
Interest Rate by Type [Axis]
Interest Rate, Type [Domain]
Interest Rate, Type [Domain]
Interest Rate, Type [Domain]
LIBOR [Member]
LIBOR [Member]
LIBOR [Member]
Interest Rate Swap [Member]
Interest Rate Swap [Member]
Mortgage Note $200 Million [Member]
Aon Center Chicago 4.87 Mortgage Note [Member]
Aon Center Chicago 4.87 Mortgage Note [Member]
Mortgage Note $25 Million [Member]
Aon Center Chicago 5.70 Mortgage Note [Member]
Aon Center Chicago 5.70 Mortgage Note [Member]
Secured Pooled Facility [Member]
Secured Pooled Facility [Member]
Fixed-Rate $105 Million Loan [Member]
Fixed-Rate 105Million Loan [Member]
Fixed-Rate 105Million Loan [Member]
Fixed-Rate $125 Million Loan [Member]
Fixed-Rate 125Million Loan [Member]
Fixed-Rate 125Million Loan [Member]
Fixed-Rate $42.5 Million Loan [Member]
Fixed-Rate 42.5Million Loan [Member]
Fixed-Rate 42.5Million Loan [Member]
WDC Mortgage Notes $140 Million[Member]
WDC Mortgage Notes [Member]
WDC Mortgage Notes [Member]
$300 Million Unsecured Term Loan [Member]
Unsecured 300 Million Term Loan [Member]
$300 Million Unsecured Term Loan [Member]
Secured Debt [Member]
Range [Axis]
Range [Axis]
Range [Domain]
Range [Domain]
Minimum [Member]
Minimum [Member]
Maximum [Member]
Maximum [Member]
Weighted Average Rate
Debt, Weighted Average Interest Rate
Line of credit, effective interest rate
Line of Credit Facility, Interest Rate at Period End
Amount Outstanding
Notes and Loans Payable
Number of properties in collateralized pool
Number Of Properties In Collateralized Pool
Number Of Properties In Collateralized Pool
Effective interest rate
Debt Instrument, Interest Rate, Effective Percentage
Basis spread on variable rate
Debt Instrument, Basis Spread on Variable Rate
LIBOR rate in effect
LIBOR Interest Rate In Effect
LIBOR Interest Rate In Effect
Schedule of Disposal Groups, Including Discontinued Operations, Results Of Operations
Schedule of Disposal Groups, Including Discontinued Operations, Results Of Operations [Table Text Block]
Schedule of Disposal Groups, Including Discontinued Operations, Results Of Operations [Table Text Block]
Disclosure of Long Lived Assets Held-for-sale
Disclosure of Long Lived Assets Held-for-sale [Table Text Block]
Schedule of Disposal Groups, Including Discontinued Operations, Income Statement, Balance Sheet and Additional Disclosures
Schedule of Disposal Groups, Including Discontinued Operations, Income Statement, Balance Sheet and Additional Disclosures [Table Text Block]
Discontinued Operations
Disposal Groups, Including Discontinued Operations, Disclosure [Text Block]
Statement of Cash Flows [Abstract]
Cash Flows from Operating Activities:
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net income
Operating distributions received from unconsolidated joint ventures
Proceeds from Equity Method Investment, Dividends or Distributions
Adjustments to reconcile net income to net cash provided by operating activities:
Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]
Depreciation
Depreciation
Amortization of deferred financing costs
Amortization of Financing Costs and Discounts
Settlement of forward starting interest rate swaps
Other amortization
Amortization of Intangible Assets
Impairment loss on real estate assets
Impairment of Real Estate
Stock compensation expense
Share-based Compensation
Equity in income of unconsolidated joint ventures
Income (Loss) from Equity Method Investments, Actual Cash Impact
Income (Loss) from Equity Method Investments, Actual Cash Impact
Gain on sale of real estate assets, net
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Non Cash Impact
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Non Cash Impact
Changes in assets and liabilities:
Increase (Decrease) in Operating Assets [Abstract]
Increase in tenant receivables, net
Increase (Decrease) in Accounts Receivable
Increase in restricted cash and escrows
Increase (Decrease) in Restricted Cash for Operating Activities
Increase in prepaid expenses and other assets
Increase (Decrease) in Prepaid Expense and Other Assets
Increase/(decrease) in accounts payable and accrued expenses
Increase (Decrease) in Accounts Payable and Accrued Liabilities
Increase/(decrease) in deferred income
Increase (Decrease) in Deferred Revenue
Net cash provided by operating activities
Net Cash Provided by (Used in) Operating Activities
Cash Flows from Investing Activities:
Net Cash Provided by (Used in) Investing Activities [Abstract]
Acquisition of real estate assets and related intangibles
Payments to Acquire and Develop Real Estate
Capitalized expenditures, net of accruals
Payments For Tenant Improvements and Capital Improvements
The cash outflow used to prepare the leased premises for tenant's occupancy and other capital improvements to properties held for use.
Acquisition of unconsolidated joint ventures, net of cash assumed
Payments to Acquire Interest in Unconsolidated Joint Venture, Net of Cash Assumed
Payments to Acquire Remaining Interest in Unconsolidated Joint Venture(s), Net of Cash Assumed
Net sales proceeds from wholly-owned properties
Proceeds from Divestiture of Businesses, Net of Cash Divested
Investments in unconsolidated joint ventures
Payments to Acquire Equity Method Investments
Deferred lease costs paid
Increase (Decrease) in Lease Acquisition Costs
Net cash used in investing activities
Net Cash Provided by (Used in) Investing Activities
Cash Flows from Financing Activities:
Net Cash Provided by (Used in) Financing Activities [Abstract]
Deferred financing costs paid
Payments of Financing Costs
Proceeds from debt
Proceeds from Notes Payable
Repayments of debt
Repayments of Notes Payable
Costs of issuance of common stock
Payments of Stock Issuance Costs
Repurchases of common stock as part of announced plan
Payments for Repurchase of Common Stock
Dividends paid and discount on dividend reinvestments
Payments of Dividends Common Stock, Distributions To Noncontrolling Interest and Discount on Dividend Reinvestment
Sum of a) The cash outflow from the distribution of an entity's earnings in the form of dividends to common stockholders, and b) Distributions to noncontrolling interest, and c)Discount on dividend reinvestments.
Net cash provided by/(used in) financing activities
Net Cash Provided by (Used in) Financing Activities
Net increase/(decrease) in cash and cash equivalents
Cash and Cash Equivalents, Period Increase (Decrease)
Cash and cash equivalents, beginning of period
Cash and Cash Equivalents, at Carrying Value
Cash and cash equivalents, end of period
Supplemental Disclosures of Significant Noncash Investing and Financing Activities:
Supplemental Cash Flow Information [Abstract]
Change in accrued share repurchases as part of an announced plan
Increase (Decrease) in Accrued Stock Repurchases
Increase (Decrease) in Accrued Stock Repurchases
Accrued capital expenditures and deferred lease costs
Increase Decrease In Accrued Capital Expenditures And Deferred Lease Costs
Net change in the balance of accrued lease acquisition costs and accrued capital expenditures during the period. These accrued costs consist of items such as leasing commissions, lease incentives, procurement fees, tenant improvements, and/or general building improvements.
Accrued deferred financing costs
Increase Decrease in Deferred Financing Costs
Change in specific incremental costs directly associated with the issuance of indebtedness which are accrued at the end of the reporting period.
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]
Award Type [Axis]
Award Type [Domain]
Stock Awards [Member]
Stock Awards [Member]
Stock Awards [Member]
Type of Share Based Compensation Expense [Axis]
Type of Share Based Compensation Expense [Axis]
Type of Share Based Compensation Expense [Axis]
Type of Share Based Compensation Expense [Domain]
Type of Share Based Compensation Expense [Domain]
[Domain] for Type of Share Based Compensation Expense [Axis]
Amortization of Nonvested Shares [Member]
Amortization Of Nonvested Shares [Member]
Amortization Of Nonvested Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period
Period of predetermined peer group's total stockholder return
Stock Awards, Performance Period Used In Calculation
Stock Awards, Performance Period Used In Calculation
Compensation expense related to stock awards
Allocated Share-based Compensation Expense
Total shares issued to employees, directors, and officers
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period
Unrecognized compensation cost related to nonvested
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized
Unrecognized compensation cost related to nonvested, weighted-average vesting period (in years)
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Unvested Deferred Stock Awards, Beginning of period (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number
Deferred Stock Awards Granted (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period
Deferred Stock Awards Vested (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period
Deferred Stock Awards Forfeited (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period
Unvested Deferred Stock Awards, End of period (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Unvested Deferred Stock Awards, Weighted-Average Grant Date Fair Value, Beginning of period (in dollars per share)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value
Deferred Stock Awards Granted, Weighted-Average Grant Date Fair Value (in dollars per share)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value
Deferred Stock Awards Vested, Weighted-Average Grant Date Fair Value (in dollars per share)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value
Deferred Stock Awards Forfeited, Weighted-Average Grant Date Fair Value (in dollars per share)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value
Unvested Deferred Stock Awards, Weighted-Average Grant Date Fair Value, End of period (in dollars per share)
Guarantor and Non-Guarantor Financial Information
Condensed Financial Statements [Text Block]
Award Type [Axis]
Stock Awards, Granted April 5, 2011 [Member]
Stock Awards, Granted April 5, 2011 [Member]
Stock Awards 2, Granted April 5, 2011 [Member]
Stock Awards 2, Granted April 5, 2011 [Member]
Stock Awards 2, Granted April 5, 2011 [Member]
Stock Awards 1, Granted April 4, 2012 [Member]
Stock Awards 1, Granted April 4 2012 [Member]
Stock Awards 1, Granted April 4 2012 [Member]
Stock Awards 2, Granted April 4, 2012 [Member]
Stock Awards 2, Granted April 4 2012 [Member]
Stock Awards 2, Granted April 4 2012 [Member]
Stock Awards, Granted April 2, 2013 [Member]
Stock Awards, Granted April 2, 2013 [Member]
Stock Awards, Granted April 2, 2013 [Member]
Stock Awards 2, Granted April 2, 2013 [Member]
Stock Awards 2, Granted April 2, 2013 [Member]
Stock Awards 2, Granted April 2, 2013 [Member]
Net Shares Granted
Share Based Compensation Arrangement By Share Based Payment Award, Equity Instruments Other Than Options, Net Shares Granted
The number of share grants, net of shares surrended for taxes, made on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).
Grant Date Fair Value
Of the shares granted, % vested
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested Percent At Reported Date
Share Based Compensation Arrangement By Share Based Payment Award, Equity Instruments Other Than Options, Vested Percent At Reported Date
Of the shares granted, % expected to vest in one year
Share Based Compensation Arrangement By Share Based Payment Award, Equity Instruments Other Than Options, Expected to Vest Within One Year, Percent
Share Based Compensation Arrangement By Share Based Payment Award, Equity Instruments Other Than Options, Expected to Vest Within One Year, Percent
Of the shares granted, % expected to vest in two years
Share Based Compensation Arrangement By Share Based Payment Award, Equity Instruments Other Than Options, Expected to Vest In Two Years, Percent
Share Based Compensation Arrangement By Share Based Payment Award, Equity Instruments Other Than Options, Expected to Vest In Two Years, Percent
Of the shares granted, % expected to vest in three years
Share Based Compensation Arrangement By Share Based Payment Award, Equity Instruments Other Than Options, Expected to Vest In Three Years, Percent
Share Based Compensation Arrangement By Share Based Payment Award, Equity Instruments Other Than Options, Expected to Vest In Three Years, Percent
Unvested Shares
Fair Value, by Balance Sheet Grouping [Table]
Fair Value, by Balance Sheet Grouping [Table]
Fair Value, Hierarchy [Axis]
Fair Value, Hierarchy [Axis]
Fair Value, Measurements, Fair Value Hierarchy [Domain]
Fair Value, Measurements, Fair Value Hierarchy [Domain]
Level 1 [Member]
Fair Value, Inputs, Level 1 [Member]
Level 2 [Member]
Fair Value, Inputs, Level 2 [Member]
Fair Value, by Balance Sheet Grouping, Disclosure Item Amounts [Axis]
Fair Value, by Balance Sheet Grouping, Disclosure Item Amounts [Axis]
Fair Value, Disclosure Item Amounts [Domain]
Fair Value, Disclosure Item Amounts [Domain]
Carrying Value [Member]
Carrying (Reported) Amount, Fair Value Disclosure [Member]
Estimated Fair Value [Member]
Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents
Cash and Cash Equivalents, Fair Value Disclosure
Tenant receivables, net
Receivables, Fair Value Disclosure
Restricted cash and escrows
Restricted Cash and Escrows, Fair Value Disclosure
This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents the amount of restricted cash and escrows existing as of the balance sheet date.
Interest rate swaps
Interest Rate Cash Flow Hedge Asset at Fair Value
Accounts payable and accrued expenses
Accounts Payable, Fair Value Disclosure
Interest rate swap liability
Interest Rate Cash Flow Hedge Liability at Fair Value
Debt
Notes Payable, Fair Value Disclosure
Statement of Other Comprehensive Income [Abstract]
Other comprehensive income/(loss):
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract]
Effective portion of gain/(loss) on derivative instruments that are designated and qualify as cash flow hedges (See Note 5)
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax
Plus: Reclassification of previously recorded loss included in net income (See Note 5)
Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, Net of Tax
Other comprehensive income/(loss)
Comprehensive income attributable to Piedmont
Comprehensive Income (Loss), Net of Tax, Attributable to Parent
Dividends to common stockholders (in dollars per share)
Common Stock, Dividends, Per Share, Cash Paid
Variable Interest Entities [Abstract]
Variable Interest Entities [Abstract]
Schedule of Variable Interest Entities
Schedule of Variable Interest Entities [Table Text Block]
Accounting Policies [Abstract]
Income Tax For Real Estate Investment Trusts [Table]
Income Tax For Real Estate Investment Trusts [Table]
Income Tax For Real Estate Investment Trusts [Table]
Income Tax For Real Estate Investment Trusts [Line Items]
Income Tax For Real Estate Investment Trusts [Line Items]
Income Tax For Real Estate Investment Trusts [Line Items]
Real estate investment trust status required taxable income distribution rate
Real Estate Investment Trust Status Required Taxable Income Distribution Rate
Real Estate Investment Trust Status Required Taxable Income Distribution Rate
Debt
Debt Disclosure [Text Block]
Stock Based Compensation
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]
Award Type [Domain]
Weighted-Average Grant Date Fair Value of Shares Granted During the Period
Total Grant Date Fair Value of Shares Vested During the Period
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Total Fair Value
Share-based Liability Awards Paid During the Period
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Share-based Liabilities Paid During Period
The liabilities paid during the accounting period for equity-based compensation.
Portland Portfolio [Member]
Portland Portfolio [Member]
Portland Portfolio [Member]
26200 Enterprise Way [Member]
ENTERPRISE WAY 26200 [Member]
ENTERPRISE WAY 26200 [Member]
110 & 112 Hidden Lake Circle Buildings [Member]
Hidden Lake Circle Buildings [Member]
Hidden Lake Circle Buildings [Member]
1111 Durham Avenue [Member]
Durham Avenue 1111 [Member]
Durham Avenue 1111 [Member]
1200 Enclave Parkway [Member]
ENCLAVE PARKWAY 1200 [Member]
ENCLAVE PARKWAY 1200 [Member]
Gain/(Loss) on Sale
Net Sales Proceeds
Number of Real Estate Properties Sold
Number of Real Estate Properties Sold
Number of Real Estate Properties Sold
Area of Land (in acres)
Impairment loss
Sale price
Disposal Group, Including Discontinued Operation, Sale Price
Disposal Group, Including Discontinued Operation, Sale Price
Rental income
Disposal Group, Including Discontinued Operation, Rental Income
Tenant reimbursements
Disposal Group, Including Discontinued Operation, Tenant Reimbursement
Disposal Group, Including Discontinued Operation, Tenant Reimbursement
Revenue
Disposal Group, Including Discontinued Operation, Revenue
Expenses:
Expenses [Abstract]
Expenses [Abstract]
Property operating costs
Disposal Group, Including Discontinued Operation, Property Operating Costs
Disposal Group, Including Discontinued Operation, Property Operating Costs
Depreciation
Disposal Group, Including Discontinued Operation, Depreciation
Disposal Group, Including Discontinued Operation, Depreciation
Amortization
Disposal Group, Including Discontinued Operation, Amortization
Disposal Group, Including Discontinued Operation, Amortization
General and administrative
Disposal Group, Including Discontinued Operation, General and Administrative Expense
Disposal Group, Including Discontinued Operation, General and Administrative Expense
Expenses
Disposal Group, Including Discontinued Operation, Operating Expense
Other income (expense):
Other Income and Expenses [Abstract]
Interest and other income/(expense)
Disposal Group Including Discontinued Operation Interest And Other Income Expense
Disposal Group Including Discontinued Operation Interest And Other Income Expense
Net recoveries of casualty loss
Disposal Group, Including Discontinued Operation, Net Loss (Gain) From Casualty Event
The net charge/recovery against earnings in the period related to a fire, explosion, or natural disaster (hurricane, earthquake) for disposal group, including discontinued operation.
Other income (expense)
Disposal Group Including Discontinued Other Income Expense
Disposal Group Including Discontinued Other Income Expense
Operating income, excluding gain/(loss) on sale
Assets:
Assets [Abstract]
Land
Land
Buildings and improvements, less accumulated depreciation
Investment Building and Building Improvements, Net
Investment Building and Building Improvements, Net
Intangible lease assets, less accumulated amortization
Finite-Lived Intangible Assets, Net
Construction in progress
Construction in Progress, Gross
Total real estate assets
Real Estate Investment Property, Net
Investments in and amounts due from unconsolidated joint ventures
Unconsolidated Equity Method Investments and Due from Joint Ventures
Unconsolidated Equity Method Investments and Due from Joint Ventures
Cash and cash equivalents
Tenant and straight-line rent receivables, net
Tenant Receivables Including Straight Line Rental Revenue Receivables
Tenant Receivables Including Straight Line Rental Revenue Receivables
Advances to affiliates
Due from Affiliates
Investment in subsidiary
Investment In Subsidiary
Amount of Investment in an affiliate by means of direct or indirect ownership
Notes receivable
Notes Receivable, Intercompany Transactions
Notes Receivable, Intercompany Transactions
Prepaid expenses, restricted cash, escrows, and other assets
Prepaid Expense and Restricted Cash and Cash Equivalents and Other Assets
Prepaid Expense and Restricted Cash and Cash Equivalents and Other Assets
Goodwill
Goodwill
Deferred financing costs, net
Deferred Finance Costs, Net
Deferred lease costs, net
Deferred Costs, Leasing, Net
Total assets
Assets
Liabilities:
Liabilities [Abstract]
Secured and unsecured debt
Long-term Debt
Accounts payable, accrued expenses, and accrued capital expenditures
Accounts Payable and Accrued Liabilities
Advances from affiliates
Due to Affiliate
Deferred income
Deferred Revenue
Intangible lease liabilities, net
Off-market Lease, Unfavorable
Interest rate swaps
Total liabilities
Liabilities
Stockholders’ Equity:
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
Common stock
Common Stock, Value, Issued
Additional paid-in capital
Additional Paid in Capital, Common Stock
Cumulative distributions in excess of earnings
Accumulated Distributions in Excess of Net Income
Other comprehensive income/(loss)
Accumulated Other Comprehensive Income (Loss), Net of Tax
Piedmont stockholders’ equity
Stockholders' Equity Attributable to Parent
Noncontrolling interest
Stockholders' Equity Attributable to Noncontrolling Interest
Total stockholders’ equity
Total liabilities and stockholders’ equity
Liabilities and Equity
Deferred Lease Costs
Deferred Charges, Policy [Policy Text Block]
Revenue Recognition
Revenue Recognition, Policy [Policy Text Block]
Income Taxes
Income Tax, Policy [Policy Text Block]
Schedule of Letters of Credit
Schedule of Letters of Credit [Table Text Block]
Schedule of Letters of Credit [Table Text Block]
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Notional Amounts of Outstanding Derivative Positions
Schedule of Notional Amounts of Outstanding Derivative Positions [Table Text Block]
Schedule of Interest Rate Derivatives
Schedule of Interest Rate Derivatives [Table Text Block]
Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss)
Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss) [Table Text Block]
Weighted-average common shares – basic
Restricted stock awards (in shares)
Incremental Common Shares Attributable to Share-based Payment Arrangements
Weighted-average common shares – diluted
Document and Entity Information [Abstract]
Document and Entity Information [Abstract]
Entity Registrant Name
Entity Registrant Name
Entity Central Index Key
Entity Central Index Key
Current Fiscal Year End Date
Current Fiscal Year End Date
Entity Filer Category
Entity Filer Category
Document Type
Document Type
Document Period End Date
Document Period End Date
Document Fiscal Year Focus
Document Fiscal Year Focus
Document Fiscal Period Focus
Document Fiscal Period Focus
Amendment Flag
Amendment Flag
Entity Common Stock, Shares Outstanding
Entity Common Stock, Shares Outstanding
Net cash provided by operating activities
Investment in real estate assets and real estate related intangibles, net of accruals
Payments to Acquire Productive Assets
Intercompany note receivable
Payments for (Proceeds from) Intercompany Notes Receivable, Investing Activities
Payments for (Proceeds from) Intercompany Notes Receivable, Investing Activities
Intercompany note payable
Payments for (Proceeds from) Intercompany Notes Payable
Payments for (Proceeds from) Intercompany Notes Payable
Distributions to/repayments from affiliates
Payments for (Proceeds from) Intercompany Distributions
Payments for (Proceeds from) Intercompany Distributions
Summary of Significant Accounting Policies
Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block]
Schedule of Variable Interest Entities [Table]
Schedule of Variable Interest Entities [Table]
Variable Interest Entities by Classification of Entity [Axis]
Variable Interest Entities [Axis]
Variable Interest Entity, Classification [Domain]
Variable Interest Entity, Classification [Domain]
Eye Street 1201 NW Associates LLC [Member]
Eye Street 1201 NW Associates LLC [Member]
Eye Street 1225 NW Associates LLC [Member]
Eye Street 1225 NW Associates LLC [Member]
Piedmont 500 W. Monroe Fee LLC [Member]
Piedmont 500 W. Monroe Fee LLC [Member]
Suwanee Gateway One LLC [Member]
Suwanee Gateway One LLC [Member]
Medici Atlanta LLC [Member]
Medici Atlanta LLC [Member]
TownPark 400, LLC [Member]
TownPark 400, LLC [Member]
TownPark 400, LLC [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity [Line Items]
Piedmont’s % Ownership of Entity
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage
Net Carrying Amount
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net
Variable interst entity, cash flow percent entitled to entity
Variable Interest Entity Cash Flow Percent Entitled To Entity
Variable Interest Entity Cash Flow Percent Entitled To Entity
Derivative Instruments
Derivative Instruments and Hedging Activities Disclosure [Text Block]
Schedule of Debt
Schedule of Debt [Table Text Block]
Schedule of Weighted Average Number of Shares
Schedule of Weighted Average Number of Shares [Table Text Block]
Statement of Financial Position [Abstract]
Building and Building Improvements [Member]
Assets:
Buildings and improvements, accumulated depreciation
Real Estate Investment Property, Accumulated Depreciation
Intangible lease assets, accumulated amortization
Finite-Lived Intangible Assets, Accumulated Amortization
Tenant receivables, allowance for doubtful accounts
Allowance for Doubtful Accounts Receivable
Deferred financing costs, accumulated amortization
Accumulated Amortization, Deferred Finance Costs
Deferred lease costs, accumulated amortization
Deferred Costs, Leasing, Accumulated Amortization
Intangible lease liabilities, accumulated amortization
Intangible Lease Liabilities Accumulated Amortization
Intangible Lease Liabilities Accumulated Amortization
Stockholders’ Equity:
Stockholders' Equity Attributable to Parent [Abstract]
Shares-in-trust, shares authorized
Shares In Trust Authorized
Shares In Trust Authorized
Shares-in-trust, shares outstanding
Shares In Trust, Outstanding
Shares In Trust, Outstanding
Preferred stock, par value (in dollars per share)
Preferred Stock, No Par Value
Preferred stock, shares authorized
Preferred Stock, Shares Authorized
Preferred stock, shares outstanding
Preferred Stock, Shares Outstanding
Common stock, par value (in dollars per share)
Common Stock, Par or Stated Value Per Share
Common stock, shares authorized
Common Stock, Shares Authorized
Common stock, shares issued
Common Stock, Shares, Issued
Common stock, shares outstanding
Derivative [Table]
Derivative [Table]
Derivative, by Nature [Axis]
Derivative, by Nature [Axis]
Derivative, Name [Domain]
Derivative, Name [Domain]
Debt [Member]
Debt [Member]
Interest Rate Swap 1 [Member]
Interest Rate Swap 1 [Member]
Interest Rate Swap 1 [Member]
Interest Rate Swap 2 [Member]
Interest Rate Swap 2 [Member]
Interest Rate Swap 2 [Member]
Interest Rate Swap 3 [Member]
Interest Rate Swap 3 [Member]
Interest Rate Swap 3 [Member]
Interest Rate Swap 4 [Member]
Interest Rate Swap 4 [Member]
Interest Rate Swap 4 [Member]
Forward Starting Interest Rate Swap 3 [Member]
Forward Starting Interest Rate Swap 3 [Member]
Forward Starting Interest Rate Swap 3 [Member]
Forward Starting Interest Rate Swap 4 [Member]
Forward Starting Interest Rate Swap 4 [Member]
Forward Starting Interest Rate Swap 4 [Member]
Forward Starting Interest Rate Swap 5 [Member]
Forward Starting Interest Rate Swap 5 [Member]
Forward Starting Interest Rate Swap 5 [Member]
Forward Starting Interest Rate Swap 6 [Member]
Forward Starting Interest Rate Swap 6 [Member]
Forward Starting Interest Rate Swap 6 [Member]
Credit Risk Contract [Member]
Credit Risk Contract [Member]
Income Statement Location [Axis]
Income Statement and Other Comprehensive Income (Loss) Location [Domain]
Income Statement Location [Domain]
Interest Expense [Member]
Derivative [Line Items]
Derivative [Line Items]
Number of forward starting swaps
Number of Interest Rate Derivatives Held
Total notional value of forward starting swap agreements
Notional Amount of Interest Rate Cash Flow Hedge Derivatives
Total Number of Interest Rate Derivatives Entered During the Period
Number of Interest Rate Derivatives Entered During Period
Number of Interest Rate Derivatives Entered During Period
Hedged amount associated with potential issuance of long-term debt
Derivative, Amount of Hedged Item
Derivative, term of contract
Derivative, Term of Contract
Derivative, Term of Contract
Interest Rate Cash Flow Hedge Derivative at Fair Value, Net [Abstract]
Interest Rate Cash Flow Hedge Derivative at Fair Value, Net [Abstract]
Gross derivative assets
Gross derivative liabilities
Net derivative asset/(liability)
Interest Rate Cash Flow Hedge Derivative at Fair Value, Net
Amount of gain/(loss) recognized in OCI on derivative
Unrealized Gain (Loss) on Interest Rate Cash Flow Hedges, Pretax, Accumulated Other Comprehensive Income (Loss)
Amount of previously recorded loss reclassified from accumulated OCI into interest expense
Interest Rate Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net
Loss to be reclassified from accumulated other comprehensive loss to interest expense over next twelve months
Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net
Assets needed for immediate settlement, aggregate fair value
Assets Needed for Immediate Settlement, Aggregate Fair Value
Buildings and improvements, less accumulated depreciation of $955,480 and $877,644 as of September 30, 2013 and December 31, 2012, respectively
Intangible lease assets, less accumulated amortization of $70,744 and $67,940 as of September 30, 2013 and December 31, 2012, respectively
Investments in unconsolidated joint ventures
Equity Method Investments
Tenant receivables, net of allowance for doubtful accounts of $306 and $346 as of September 30, 2013 and December 31, 2012, respectively
Accounts Receivable, Net
Straight-line rent receivables
Deferred Rent Receivables, Net
Due from unconsolidated joint ventures
Due from Joint Ventures
Restricted cash and escrows
Restricted Cash and Cash Equivalents
Prepaid expenses and other assets
Prepaid Expense and Other Assets
Deferred financing costs, less accumulated amortization of $12,365 and $10,479 as of September 30, 2013 and December 31, 2012, respectively
Deferred lease costs, less accumulated amortization of $129,998 and $112,496 as of September 30, 2013 and December 31, 2012, respectively
Unsecured debt
Unsecured Debt
Secured debt
Secured Debt
Intangible lease liabilities, less accumulated amortization of $43,322 and $40,931 as of September 30, 2013 and December 31, 2012, respectively
Commitments and Contingencies
Commitments and Contingencies
Shares-in-trust, 150,000,000 shares authorized; none outstanding as of September 30, 2013 or December 31, 2012
Common Stock Held in Trust
Preferred stock, no par value, 100,000,000 shares authorized; none outstanding as of September 30, 2013 or December 31, 2012
Preferred Stock, Value, Issued
Common stock, $.01 par value, 750,000,000 shares authorized; 161,270,766 and 167,556,001 shares issued and outstanding as of September 30, 2013 and December 31, 2012, respectively
Organization
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]
Variable Interest Entities
Variable Interest Entities [Text Block]
Describes how the entity aggregates Variable Interest Entities (VIE) for disclosure purposes, distinguishing between (a) VIEs that are not consolidated because the enterprise is not the primary beneficiary but has a variable interest and (b) VIEs that are consolidated