CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands		3 Months Ended				6 Months Ended
		Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021
Statement of Comprehensive Income [Abstract]
Net income (loss)		$ 4,651	$ 6,101	$ (175)	$ 6,964	$ 10,752	$ 6,789
Comprehensive income:
Unrealized gain on derivative financial instruments		1,747		860		5,511	1,770
Amortization of interest rate contracts	[1]	188		188		376	376
Total comprehensive income		1,935	$ 3,952	1,048	$ 1,098	5,887	2,146
Comprehensive income		6,586		873		16,639	8,935
Comprehensive (income) loss attributable to noncontrolling interest		(20)		2		(40)	(47)
Comprehensive income attributable to Brandywine Realty Trust		$ 6,566		$ 875		$ 16,599	$ 8,888

[1] Amounts reclassified from comprehensive income to interest expense within the Consolidated Statements of Operations.