Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2012	Mar. 31, 2011
Net income (loss)	$ 9,336	$ (490)
Comprehensive income (loss):
Unrealized gain (loss) on derivative financial instruments	27	(613)
Reclassification of realized (gains)/losses on derivative financial instruments to operations, net	48	22
Total comprehensive income (loss)	75	(591)
Comprehensive income (loss)	9,411	(1,081)
Comprehensive (income) loss attributable to non-controlling interest	(135)	63
Comprehensive income (loss) attributable to Brandywine Realty Trust	9,276	(1,018)
BRANDYWINE OPERATING PARTNERSHIP, L.P.
Net income (loss)	9,336	(490)
Comprehensive income (loss):
Unrealized gain (loss) on derivative financial instruments	27	(613)
Reclassification of realized (gains)/losses on derivative financial instruments to operations, net	48	22
Total comprehensive income (loss)	75	(591)
Comprehensive income (loss) attributable to Brandywine Realty Trust	$ 9,411	$ (1,081)

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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+ Details

- 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 noncontrolling interests, if any. 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.

+ References+ Details

- 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.

+ References+ Details

- Definition

This element represents Other Comprehensive Income or Loss, Net of Tax, for the period. Includes deferred gains or losses on qualifying hedges, unrealized holding gains or losses on available-for-sale securities, minimum pension liability, and cumulative translation adjustment. While for technical reasons this element has no balance attribute, the default assumption is a credit balance consistent with its label.

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Net of tax effect of the reclassification adjustment for accumulated gains and losses from derivative instrument designated and qualifying as the effective portion of cash flow hedges included in accumulated comprehensive income that was realized in net income during the period.

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Change in accumulated gains and losses from derivative instrument designated and qualifying as the effective portion of cash flow hedges, net of tax effect. The after tax effect change includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses.

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

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