CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2025	Mar. 31, 2025	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2025	Jun. 30, 2024
Revenue
Total revenue	$ 120,571		$ 125,346		$ 242,087	$ 251,830
Operating expenses
Property operating expenses	31,365		31,353		64,891	63,632
Real estate taxes	11,507		12,535		22,939	25,127
Third party management expenses	2,484		2,426		5,117	4,969
Depreciation and amortization	43,762		44,187		88,115	89,229
General and administrative expenses	9,325		8,941		26,795	20,045
Provision for impairment	63,369		6,427		63,369	6,427
Total operating expenses	161,812		105,869		271,226	209,429
Gain (loss) on sale of real estate
Net gain (loss) on disposition of real estate	(86)		0		2,973	0
Total gain (loss) on sale of real estate	(86)		0		2,973	0
Operating income (loss)	(41,327)		19,477		(26,166)	42,401
Other income (expense):
Interest and investment income	850		1,512		2,036	1,933
Interest expense	(32,345)		(29,494)		(64,190)	(54,543)
Interest expense - amortization of deferred financing costs	(1,197)		(1,415)		(2,427)	(2,506)
Equity in loss of unconsolidated real estate ventures	(14,832)		(14,507)		(25,343)	(28,095)
Net gain on real estate venture transactions	0		53,762		183	53,733
Gain on early extinguishment of debt	0		941		0	941
Net income (loss) before income taxes	(88,851)		30,276		(115,907)	13,864
Income tax provision	(85)		(9)		(85)	(11)
Net income (loss)	(88,936)	$ (27,056)	30,267	$ (16,414)	(115,992)	13,853
Net (income) loss attributable to noncontrolling interests	267		(94)		348	(48)
Net income (loss) attributable to Brandywine Realty Trust	(88,669)		30,173		(115,644)	13,805
Nonforfeitable dividends allocated to unvested restricted shareholders	(322)		(277)		(751)	(613)
Net income (loss) attributable to Common Shareholders of Brandywine Realty Trust	$ (88,991)		$ 29,896		$ (116,395)	$ 13,192
Basic income (loss) per Common Share (in dollars per share)	$ (0.51)		$ 0.17		$ (0.67)	$ 0.08
Diluted income (loss) per Common Share (in dollars per share)	$ (0.51)		$ 0.17		$ (0.67)	$ 0.08
Basic weighted average shares outstanding (in shares)	173,532,583		172,563,136		173,225,737	172,385,087
Diluted weighted average shares outstanding (in shares)	173,532,583		174,695,651		173,225,737	174,342,151
Rents
Revenue
Total revenue	$ 114,196		$ 118,009		$ 228,624	$ 237,017
Third party management fees, labor reimbursement and leasing
Revenue
Total revenue	4,873		5,698		10,702	11,592
Other
Revenue
Total revenue	$ 1,502		$ 1,639		$ 2,761	$ 3,221