XML 108 R2.htm IDEA: XBRL DOCUMENT
v3.24.1

Pay vs Performance Disclosure - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Pay vs Performance Disclosure |  |  |  |
Pay vs Performance Disclosure, Table | Pay Versus Performance The following table provides specified executive compensation and financial performance measures for our four most recently completed fiscal years.
Year |  | Summary Compensation Table Total to PEO |  | Compensation Actually Paid (“CAP”) to PEO 1 |  | Average Summary Compensation Table Total for Non-PEO NEOs 2 |  | Average Compensation Actually Paid to Non-PEO NEOs 1, 2 |  | Value of Initial Fixed $100 Investment Based On: |  | Net Income (Loss) (in thousands) |  | CSM: Funds From Operations (FFO) 4 : Company TSR
| Company TSR |  | Peer Group TSR 3
(a) |  | (b) |  | (c) |  | (d) |  | (e) |  | (f) |  | (g) |  | (h) |  | (i)
2023 |  | $6,012,885 |  | $5,748,961 |  | $1,824,609 |  | $1,712,103 |  | $48.55 |  | $83.23 |  | $(197,403) |  | $1.15
2022 |  | $6,355,107 |  | $817,805 |  | $1,897,202 |  | $288,428 |  | $47.73 |  | $62.07 |  | $53,992 |  | $1.38
2021 |  | $6,089,044 |  | $7,917,000 |  | $1,797,719 |  | $2,302,582 |  | $96.72 |  | $99.51 |  | $12,366 |  | $1.37
2020 |  | $5,301,445 |  | $4,286,495 |  | $1,515,669 |  | $1,107,600 |  | $80.94 |  | $81.56 |  | $307,326 |  | $1.39
Notes: 1. To calculate CAP to our Principal Executive Officer (“PEO”), Gerard H. Sweeney, for each of the years shown, the following amounts were deducted from and added to Summary Compensation Table (“SCT”) total compensation. PEO SCT Total to CAP Reconciliation:
Year |  | SCT Total |  | Deductions from SCT Total (i) |  | Additions to SCT Total (ii) |  | CAP
2023 |  | $6,012,885 |  | -$3,598,577 |  | +$3,334,653 |  | $5,748,961
2022 |  | $6,355,107 |  | -$3,869,132 |  | +$-1,668,170 |  | $817,805
2021 |  | $6,089,044 |  | -$3,375,006 |  | +$5,202,962 |  | $7,917,000
2020 |  | $5,301,445 |  | -$3,187,497 |  | +$2,172,547 |  | $4,286,495
(i)  Represents the grant date fair value of equity-based awards granted each year, as shown in the Share Awards column of the Summary Compensation Table. (ii)  Reflects the value of equity calculated in accordance with the SEC methodology for determining CAP for each year shown. The equity component of CAP for fiscal year 2023 is further detailed in the supplemental table below . PEO Equity Component of CAP:
Year |  | Fair Value of Equity Awards Granted in the Year and Outstanding and Unvested as of Year End |  | Year over Year Change in Fair Value of Equity Awards Granted in Prior Years and Outstanding and Unvested as of Year End |  | Fair Value as of Vesting Date of Equity Awards Granted and Vested in the Year |  | Year over Year Change in Fair Value of Equity Awards Granted in Prior Years that Vested in the Year |  | Fair Value at the End of the Prior Year of Equity Awards that were Forfeited in the Year |  | Value of Dividends or other Earnings Paid on Equity Awards not Otherwise Reflected in Fair Value or Total Compensation |  | Total Equity Award Adjustments
2023 |  | $1,917,035 |  | $-38,469 |  | $1,210,562 |  | $35,177 |  | $0 |  | $210,348 |  | $3,334,653
2022 |  | $649,818 |  | $-3,661,218 |  | $1,231,953 |  | $-57,550 |  | $0 |  | $168,826 |  | $-1,668,170
2021 |  | $2,549,325 |  | $1,407,499 |  | $1,124,892 |  | $-24,633 |  | $0 |  | $145,879 |  | $5,202,962
2020 |  | $1,861,670 |  | $-829,158 |  | $1,062,396 |  | $-74,053 |  | $0 |  | $151,693 |  | $2,172,547
2. The non-PEO named executive officers (“Non-PEO NEOs”) reflected in columns (d) and (e) consist of the following individuals for each of the years shown: Thomas E. Wirth, H. Jeffrey DeVuono, George D. Johnstone and William D. Redd. To calculate CAP to our Non-PEO NEOs for each of the years shown, the following amounts were deducted from and added to SCT total compensation. Average Non-PEO NEOs SCT Total to CAP Reconciliation:
Year |  | SCT Total |  | Deductions from SCT Total |  | Additions to SCT Total |  | CAP
|  |  |  | (i) |  | (ii) |  |
2023 |  | $1,824,609 |  | -$976,644 |  | +$864,138 |  | $1,712,103
2022 |  | $1,897,202 |  | -$1,033,521 |  | +$-575,254 |  | $288,428
2021 |  | $1,797,719 |  | -$857,999 |  | +$1,362,862 |  | $2,302,582
2020 |  | $1,515,669 |  | -$744,372 |  | +$336,303 |  | $1,107,600
(i)  Represents the grant date fair value of equity-based awards granted each year, as shown in the Share Awards column of the Summary Compensation Table. (ii)  Reflects the value of equity calculated in accordance with the SEC methodology for determining CAP for each year shown. The equity component of CAP for fiscal year 2023 is further detailed in the supplemental table below . Average Non-PEO NEOs Equity Component of CAP:
Year |  | Fair Value of Equity Awards Granted in the Year and Outstanding and Unvested as of Year End |  | Year over Year Change in Fair Value of Equity Awards Granted in Prior Years and Outstanding and Unvested as of Year End |  | Fair Value as of Vesting Date of Equity Awards Granted and Vested in the Year |  | Year over Year Change in Fair Value of Equity Awards Granted in Prior Years that Vested in the Year |  | Fair Value at the End of the Prior Year of Equity Awards that were Forfeited in the Year |  | Value of Dividends or other Earnings Paid on Equity Awards not Otherwise Reflected in Fair Value or Total Compensation |  | Total Equity Award Adjustments
2023 |  | $603,256 |  | $-16,229 |  | $227,433 |  | $-6,034 |  | $0 |  | $55,712 |  | $864,138
2022 |  | $218,774 |  | $-999,146 |  | $203,955 |  | $-42,467 |  | $0 |  | $43,630 |  | $-575,254
2021 |  | $817,858 |  | $376,129 |  | $125,821 |  | $7,555 |  | $0 |  | $35,499 |  | $1,362,862
2020 |  | $553,217 |  | $-259,406 |  | $90,069 |  | $-83,576 |  | $0 |  | $35,999 |  | $336,303
3.   The Peer Group TSR set forth in this table utilizes the FTSE NAREIT Equity Office Index, which we also utilize in the stock performance graph required by Item 201(e) of Regulation S-K included in our Annual Report for the year ended December 31, 2023. 4.   We compute FFO in accordance with standards established by the National Association of Real Estate Investment Trusts (NAREIT). See footnote 1 to the table in the portion of the CD&A entitled “2023 Annual Incentive Performance Goals and Outcomes” for an explanation of how we calculate FFO. |  |  |
Company Selected Measure Name | FFO |  |  |
Named Executive Officers, Footnote | The non-PEO named executive officers (“Non-PEO NEOs”) reflected in columns (d) and (e) consist of the following individuals for each of the years shown: Thomas E. Wirth, H. Jeffrey DeVuono, George D. Johnstone and William D. Redd. |  |  |
Peer Group Issuers, Footnote | The Peer Group TSR set forth in this table utilizes the FTSE NAREIT Equity Office Index, which we also utilize in the stock performance graph required by Item 201(e) of Regulation S-K included in our Annual Report for the year ended December 31, 2023. |  |  |
PEO Total Compensation Amount | $ 6,012,885 | $ 6,355,107 | $ 6,089,044 | $ 5,301,445
PEO Actually Paid Compensation Amount | $ 5,748,961 | 817,805 | 7,917,000 | 4,286,495
Adjustment To PEO Compensation, Footnote | PEO SCT Total to CAP Reconciliation:
Year |  | SCT Total |  | Deductions from SCT Total (i) |  | Additions to SCT Total (ii) |  | CAP
2023 |  | $6,012,885 |  | -$3,598,577 |  | +$3,334,653 |  | $5,748,961
2022 |  | $6,355,107 |  | -$3,869,132 |  | +$-1,668,170 |  | $817,805
2021 |  | $6,089,044 |  | -$3,375,006 |  | +$5,202,962 |  | $7,917,000
2020 |  | $5,301,445 |  | -$3,187,497 |  | +$2,172,547 |  | $4,286,495
(i)  Represents the grant date fair value of equity-based awards granted each year, as shown in the Share Awards column of the Summary Compensation Table. (ii)  Reflects the value of equity calculated in accordance with the SEC methodology for determining CAP for each year shown. The equity component of CAP for fiscal year 2023 is further detailed in the supplemental table below . PEO Equity Component of CAP:
Year |  | Fair Value of Equity Awards Granted in the Year and Outstanding and Unvested as of Year End |  | Year over Year Change in Fair Value of Equity Awards Granted in Prior Years and Outstanding and Unvested as of Year End |  | Fair Value as of Vesting Date of Equity Awards Granted and Vested in the Year |  | Year over Year Change in Fair Value of Equity Awards Granted in Prior Years that Vested in the Year |  | Fair Value at the End of the Prior Year of Equity Awards that were Forfeited in the Year |  | Value of Dividends or other Earnings Paid on Equity Awards not Otherwise Reflected in Fair Value or Total Compensation |  | Total Equity Award Adjustments
2023 |  | $1,917,035 |  | $-38,469 |  | $1,210,562 |  | $35,177 |  | $0 |  | $210,348 |  | $3,334,653
2022 |  | $649,818 |  | $-3,661,218 |  | $1,231,953 |  | $-57,550 |  | $0 |  | $168,826 |  | $-1,668,170
2021 |  | $2,549,325 |  | $1,407,499 |  | $1,124,892 |  | $-24,633 |  | $0 |  | $145,879 |  | $5,202,962
2020 |  | $1,861,670 |  | $-829,158 |  | $1,062,396 |  | $-74,053 |  | $0 |  | $151,693 |  | $2,172,547
Non-PEO NEO Average Total Compensation Amount | $ 1,824,609 | 1,897,202 | 1,797,719 | 1,515,669
Non-PEO NEO Average Compensation Actually Paid Amount | $ 1,712,103 | 288,428 | 2,302,582 | 1,107,600
Adjustment to Non-PEO NEO Compensation Footnote | Average Non-PEO NEOs SCT Total to CAP Reconciliation:
Year |  | SCT Total |  | Deductions from SCT Total |  | Additions to SCT Total |  | CAP
|  |  |  | (i) |  | (ii) |  |
2023 |  | $1,824,609 |  | -$976,644 |  | +$864,138 |  | $1,712,103
2022 |  | $1,897,202 |  | -$1,033,521 |  | +$-575,254 |  | $288,428
2021 |  | $1,797,719 |  | -$857,999 |  | +$1,362,862 |  | $2,302,582
2020 |  | $1,515,669 |  | -$744,372 |  | +$336,303 |  | $1,107,600
(i)  Represents the grant date fair value of equity-based awards granted each year, as shown in the Share Awards column of the Summary Compensation Table. (ii)  Reflects the value of equity calculated in accordance with the SEC methodology for determining CAP for each year shown. The equity component of CAP for fiscal year 2023 is further detailed in the supplemental table below . Average Non-PEO NEOs Equity Component of CAP:
Year |  | Fair Value of Equity Awards Granted in the Year and Outstanding and Unvested as of Year End |  | Year over Year Change in Fair Value of Equity Awards Granted in Prior Years and Outstanding and Unvested as of Year End |  | Fair Value as of Vesting Date of Equity Awards Granted and Vested in the Year |  | Year over Year Change in Fair Value of Equity Awards Granted in Prior Years that Vested in the Year |  | Fair Value at the End of the Prior Year of Equity Awards that were Forfeited in the Year |  | Value of Dividends or other Earnings Paid on Equity Awards not Otherwise Reflected in Fair Value or Total Compensation |  | Total Equity Award Adjustments
2023 |  | $603,256 |  | $-16,229 |  | $227,433 |  | $-6,034 |  | $0 |  | $55,712 |  | $864,138
2022 |  | $218,774 |  | $-999,146 |  | $203,955 |  | $-42,467 |  | $0 |  | $43,630 |  | $-575,254
2021 |  | $817,858 |  | $376,129 |  | $125,821 |  | $7,555 |  | $0 |  | $35,499 |  | $1,362,862
2020 |  | $553,217 |  | $-259,406 |  | $90,069 |  | $-83,576 |  | $0 |  | $35,999 |  | $336,303
Compensation Actually Paid vs. Total Shareholder Return | Description of Relationship Between Compensation Actually Paid and Company TSR The following chart sets forth the relationship between Compensation Actually Paid to our PEO, the average of Compensation Actually Paid to our other NEOs, and the Company’s cumulative TSR over the three most recently completed fiscal years. |  |  |
Compensation Actually Paid vs. Net Income | Description of Relationship Between Compensation Actually Paid and Net Income The following chart sets forth the relationship between Compensation Actually Paid to our PEO, the average of Compensation Actually Paid to our other NEOs, and our net income during the three most recently completed fiscal years. |  |  |
Compensation Actually Paid vs. Company Selected Measure | Description of Relationship Between Compensation Actually Paid and Company-Selected Measure The following chart sets forth the relationship between Compensation Actually Paid to our PEO, the average of Compensation Actually Paid to our other NEOs, and our FFO during the three most recently completed fiscal years. |  |  |
Total Shareholder Return Amount | $ 48.55 | 47.73 | 96.72 | 80.94
Peer Group Total Shareholder Return Amount | 83.23 | 62.07 | 99.51 | 81.56
Net Income (Loss) | $ (197,403,000) | $ 53,992,000 | $ 12,366,000 | $ 307,326,000
Company Selected Measure Amount | 1.15 | 1.38 | 1.37 | 1.39
PEO Name | Gerard H. Sweeney |  |  |
PEO | Deductions from SCT Total [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | $ (3,598,577) | $ (3,869,132) | $ (3,375,006) | $ (3,187,497)
PEO | Additions to SCT Total [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 3,334,653 | (1,668,170) | 5,202,962 | 2,172,547
PEO | Fair Value of Equity Awards Granted in the Year and Outstanding and Unvested as of Year End [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 1,917,035 | 649,818 | 2,549,325 | 1,861,670
PEO | Year over Year Change in Fair Value of Equity Awards Granted in Prior Years and Outstanding and Unvested as of Year End [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | (38,469) | (3,661,218) | 1,407,499 | (829,158)
PEO | Fair Value as of Vesting Date of Equity Awards Granted and Vested in the Year [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 1,210,562 | 1,231,953 | 1,124,892 | 1,062,396
PEO | Year over Year Change in Fair Value of Equity Awards Granted in Prior Years that Vested in the Year [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 35,177 | (57,550) | (24,633) | (74,053)
PEO | Fair Value at the End of the Prior Year of Equity Awards that were Forfeited in the Year [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 0 | 0 | 0 | 0
PEO | Value of Dividends or other Earnings Paid on Equity Awards not Otherwise Reflected in Fair Value or Total Compensation [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 210,348 | 168,826 | 145,879 | 151,693
PEO | Total Equity Award Adjustments [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 3,334,653 | (1,668,170) | 5,202,962 | 2,172,547
Non-PEO NEO | Deductions from SCT Total [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | (976,644) | (1,033,521) | (857,999) | (744,372)
Non-PEO NEO | Additions to SCT Total [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 864,138 | (575,254) | 1,362,862 | 336,303
Non-PEO NEO | Fair Value of Equity Awards Granted in the Year and Outstanding and Unvested as of Year End [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 603,256 | 218,774 | 817,858 | 553,217
Non-PEO NEO | Year over Year Change in Fair Value of Equity Awards Granted in Prior Years and Outstanding and Unvested as of Year End [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | (16,229) | (999,146) | 376,129 | (259,406)
Non-PEO NEO | Fair Value as of Vesting Date of Equity Awards Granted and Vested in the Year [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 227,433 | 203,955 | 125,821 | 90,069
Non-PEO NEO | Year over Year Change in Fair Value of Equity Awards Granted in Prior Years that Vested in the Year [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | (6,034) | (42,467) | 7,555 | (83,576)
Non-PEO NEO | Fair Value at the End of the Prior Year of Equity Awards that were Forfeited in the Year [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 0 | 0 | 0 | 0
Non-PEO NEO | Value of Dividends or other Earnings Paid on Equity Awards not Otherwise Reflected in Fair Value or Total Compensation [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 55,712 | 43,630 | 35,499 | 35,999
Non-PEO NEO | Total Equity Award Adjustments [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | $ 864,138 | $ (575,254) | $ 1,362,862 | $ 336,303

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 3 + Details
Name: | ecd_AdjToCompAmt
Namespace Prefix: | ecd_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 3 + Details
Name: | ecd_AdjToNonPeoNeoCompFnTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 3 + Details
Name: | ecd_AdjToPeoCompFnTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph vi + Details
Name: | ecd_CoSelectedMeasureAmt
Namespace Prefix: | ecd_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph vi + Details
Name: | ecd_CoSelectedMeasureName
Namespace Prefix: | ecd_
Data Type: | xbrli:normalizedStringItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 5 -Subparagraph iii + Details
Name: | ecd_CompActuallyPaidVsCoSelectedMeasureTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 5 -Subparagraph ii + Details
Name: | ecd_CompActuallyPaidVsNetIncomeTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 5 -Subparagraph i + Details
Name: | ecd_CompActuallyPaidVsTotalShareholderRtnTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 3 + Details
Name: | ecd_NamedExecutiveOfficersFnTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph iii + Details
Name: | ecd_NonPeoNeoAvgCompActuallyPaidAmt
Namespace Prefix: | ecd_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph ii + Details
Name: | ecd_NonPeoNeoAvgTotalCompAmt
Namespace Prefix: | ecd_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph iv + Details
Name: | ecd_PeerGroupIssuersFnTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph iv + Details
Name: | ecd_PeerGroupTotalShareholderRtnAmt
Namespace Prefix: | ecd_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph iii + Details
Name: | ecd_PeoActuallyPaidCompAmt
Namespace Prefix: | ecd_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 3 + Details
Name: | ecd_PeoName
Namespace Prefix: | ecd_
Data Type: | xbrli:normalizedStringItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph ii + Details
Name: | ecd_PeoTotalCompAmt
Namespace Prefix: | ecd_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 1 + Details
Name: | ecd_PvpTable
Namespace Prefix: | ecd_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 1 + Details
Name: | ecd_PvpTableTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph iv + Details
Name: | ecd_TotalShareholderRtnAmt
Namespace Prefix: | ecd_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(g)(1)(ii)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 323 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481687/323-10-50-3 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 28 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482907/825-10-50-28 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482765/220-10-50-6 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483443/250-10-50-3 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483443/250-10-50-1 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 40 -Name Accounting Standards Codification -Section 65 -Paragraph 1 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480175/815-40-65-1 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483443/250-10-50-8 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483443/250-10-50-9 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483443/250-10-50-11 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483443/250-10-50-11 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483443/250-10-50-4 Reference 13: http://www.xbrl.org/2003/role/exampleRef -Topic 946 -SubTopic 830 -Name Accounting Standards Codification -Section 55 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480167/946-830-55-10 Reference 14: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section 45 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483581/946-220-45-7 Reference 15: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(18)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483586/944-220-S99-1 Reference 16: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 22 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-22 Reference 17: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-07(9)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483575/946-220-S99-1 Reference 18: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.6-09(1)(d)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483575/946-220-S99-3 Reference 19: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(i)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A Reference 20: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(ii)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A Reference 21: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(iii)(A)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A Reference 22: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(iv)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A Reference 23: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(5)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A Reference 24: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(i)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B Reference 25: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(iii)(A)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B Reference 26: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(iii)(B)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B Reference 27: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(iv)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B Reference 28: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(5)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B Reference 29: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 30 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-30 Reference 30: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 32 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-32 Reference 31: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 60B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482689/260-10-45-60B Reference 32: http://www.xbrl.org/2003/role/exampleRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 31 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-31 Reference 33: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 32 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-32 Reference 34: http://www.xbrl.org/2003/role/disclosureRef -Topic 205 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483499/205-20-50-7 Reference 35: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 Reference 36: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482790/220-10-45-1A Reference 37: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482790/220-10-45-1B Reference 38: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(20)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2 Reference 39: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(22)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483589/942-220-S99-1 + Details
Name: | us-gaap_NetIncomeLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | ecd_ExecutiveCategoryAxis=ecd_PeoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_AdjToCompAxis=bdn_DeductionsFromSctTotalMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_AdjToCompAxis=bdn_AdditionsToSctTotalMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_AdjToCompAxis=bdn_FairValueOfEquityAwardsGrantedInTheYearAndOutstandingAndUnvestedAsOfYearEndMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_AdjToCompAxis=bdn_YearOverYearChangeInFairValueOfEquityAwardsGrantedInPriorYearsAndOutstandingAndUnvestedAsOfYearEndMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_AdjToCompAxis=bdn_FairValueAsOfVestingDateOfEquityAwardsGrantedAndVestedInTheYearMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_AdjToCompAxis=bdn_YearOverYearChangeInFairValueOfEquityAwardsGrantedInPriorYearsThatVestedInTheYearMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_AdjToCompAxis=bdn_FairValueAtTheEndOfThePriorYearOfEquityAwardsThatWereForfeitedInTheYearMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_AdjToCompAxis=bdn_ValueOfDividendsOrOtherEarningsPaidOnEquityAwardsNotOtherwiseReflectedInFairValueOrTotalCompensationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_AdjToCompAxis=bdn_TotalEquityAwardAdjustmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_ExecutiveCategoryAxis=ecd_NonPeoNeoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |