Debt Instrument, Number Of Operating Properties Securing The Debt

No definition available.

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- Definition

Number Of Wholly Owned Subsidiaries Participating In A Loan Agreement

+ References

No definition available.

+ Details

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Namespace Prefix:	bdn_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

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-Publisher FASB
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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Fair value amount of debt instrument that was repurchased.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of interest payable on debt, including, but not limited to, trade payables.

+ References

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-Publisher FASB
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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The cash outflow to repay long-term debt that is not secured by collateral. Excludes repayments of tax exempt unsecured debt.

+ References

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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

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- Details

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- Details

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- Details

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SUBSEQUENT EVENTS (Details)			12 Months Ended
SUBSEQUENT EVENTS (Details)	Jan. 20, 2023 USD ($)	Jan. 19, 2023 USD ($) property subsidiary	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 20, 2022
Subsequent Event [Line Items]
Repayments of unsecured notes			$ 296,134,000	$ 0	$ 0
Secured Facility \| Subsequent Event \| Secured Debt
Subsequent Event [Line Items]
Number of wholly owned subsidiaries participating in a loan agreement \| subsidiary		7
Number of operating properties \| property		7
Debt instrument, face amount		$ 245,000,000
Debt instrument, interest rate		5.875%
Guaranteed Notes due 2023 \| Unsecured Debt
Subsequent Event [Line Items]
Debt instrument, face amount			$ 350,000,000.0
Debt instrument, interest rate			3.95%			3.95%
Interest payable			$ 4,100,000
Guaranteed Notes due 2023 \| Subsequent Event \| Unsecured Debt
Subsequent Event [Line Items]
Repayments of unsecured notes	$ 55,200,000
Redemption of principal amount	54,300,000
Interest payable	$ 920,000