Consolidated Statements of Comprehensive Income Statement (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2013	Mar. 31, 2012
Net income	$ 3,919	$ 9,336
Comprehensive Income (Loss)
Unrealized gain on derivative financial instruments	1,845	27
Reclassification of realized (gains)/losses on derivative financial instruments to operations, net (1)	48	48
Total comprehensive income	1,893	75
Comprehensive income	5,812	9,411
Comprehensive (income) loss attributable to non-controlling interest	(52)	(135)
Comprehensive income (loss) attributable to Brandywine Realty Trust	5,760	9,276
BRANDYWINE OPERATING PARTNERSHIP, L.P.
Net income	3,919	9,336
Comprehensive Income (Loss)
Unrealized gain on derivative financial instruments	1,845	27
Reclassification of realized (gains)/losses on derivative financial instruments to operations, net (1)	48	48
Total comprehensive income	1,893	75
Comprehensive income (loss) attributable to Brandywine Realty Trust	$ 5,812	$ 9,411

The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the reporting entity. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, but excludes any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

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The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to noncontrolling interests. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

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- Definition

The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the economic entity, including both controlling (parent) and noncontrolling interests. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, including any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

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- Definition

Net of tax amount of the income statement impact of the reclassification adjustment of accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges realized in net income. Also includes reclassification adjustments of an entity's share of an equity investee's deferred hedging gain (loss) realized in net income.

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Net of tax amount, before reclassification adjustments, of the change in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Also includes an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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- Definition

The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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