CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2023	Mar. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income (loss)		$ (5,276)	$ 6,101
Comprehensive income (loss):
Unrealized gain (loss) on derivative financial instruments		(5,291)	3,764
Amortization of interest rate contracts	[1]	0	188
Total comprehensive income (loss)		(5,291)	3,952
Comprehensive income (loss)		(10,567)	10,053
Comprehensive (income) loss attributable to noncontrolling interest		17	(20)
Comprehensive income (loss) attributable to Brandywine Realty Trust		$ (10,550)	$ 10,033

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