Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Net income (loss)	$ (4,715)	$ (17,606)	$ 8,089
Comprehensive income:
Unrealized gain (loss) on derivative financial instruments	(4,499)	7,320	7,395
Ineffectiveness of the hedges	0	0	(125)
Reclassification of realized (gains)/losses on derivative financial instruments to operations, net	153	28	(184)
Total comprehensive income (loss)	(4,346)	7,348	7,086
Comprehensive income (loss)	(9,061)	(10,258)	15,175
Comprehensive (income) loss attributable to non-controlling interest	427	377	(63)
Comprehensive income (loss) attributable to Brandywine Realty Trust	(8,634)	(9,881)	15,112
BRANDYWINE OPERATING PARTNERSHIP, L.P.
Net income (loss)	(4,715)	(17,606)	8,089
Comprehensive income:
Unrealized gain (loss) on derivative financial instruments	(4,499)	7,320	7,395
Ineffectiveness of the hedges	0	0	(125)
Reclassification of realized (gains)/losses on derivative financial instruments to operations, net	153	28	(184)
Total comprehensive income (loss)	(4,346)	7,348	7,086
Comprehensive income (loss)	(9,061)	(10,258)	15,175
Comprehensive (income) loss attributable to non-controlling interest	0	0	(30)
Comprehensive income (loss) attributable to Brandywine Realty Trust	$ (9,061)	$ (10,258)	$ 15,145