Segment Information (Tables)

3 Months Ended

Mar. 31, 2012

Segment Information [Abstract]

Schedule Of Segment Information By Geographic Area And Property Type

For the three months ended March 31, 2012:

	Boston			New York			Princeton			San Francisco			Washington, DC			Total
Rental Revenue:
Class A Office	$	140,871		$	117,589		$	14,850		$	52,197		$	90,398		$	415,905
Office/Technical		8,167			—			—			52			4,092			12,311
Residential		883			—			—			—			3,598			4,481
Hotel		6,816			—			—			—			—			6,816
Total		156,737			117,589			14,850			52,249			98,088			439,513
% of Grand Totals		35.66	%		26.75	%		3.38	%		11.89	%		22.32	%		100.0	%
Rental Expenses:
Class A Office		57,890			38,429			7,358			20,091			27,442			151,210
Office/Technical		2,510			—			—			24			1,047			3,581
Residential		390			—			—			—			2,325			2,715
Hotel		6,099			—			—			—			—			6,099
Total		66,889			38,429			7,358			20,115			30,814			163,605
% of Grand Totals		40.89	%		23.49	%		4.50	%		12.29	%		18.83	%		100.0	%
Net operating income	$	89,848		$	79,160		$	7,492		$	32,134		$	67,274		$	275,908
% of Grand Totals		32.56	%		28.69	%		2.72	%		11.65	%		24.38	%		100.0	%

For the three months ended March 31, 2011:

	Boston			New York			Princeton			San Francisco			Washington, DC			Total
Rental Revenue:
Class A Office	$	127,429		$	113,007		$	16,279		$	52,893		$	82,680		$	392,288
Office/Technical		7,558			—			—			—			3,992			11,550
Residential		—			—			—			—			—			—
Hotel		5,948			—			—			—			—			5,948
Total		140,935			113,007			16,279			52,893			86,672			409,786
% of Grand Totals		34.39	%		27.58	%		3.97	%		12.91	%		21.15	%		100.0	%
Rental Expenses:
Class A Office		47,901			37,715			7,915			19,333			23,165			136,029
Office/Technical		2,479			—			—			—			1,122			3,601
Residential		—			—			—			—			—			—
Hotel		5,739			—			—			—			—			5,739
Total		56,119			37,715			7,915			19,333			24,287			145,369
% of Grand Totals		38.61	%		25.94	%		5.44	%		13.30	%		16.71	%		100.0	%
Net operating income	$	84,816		$	75,292		$	8,364		$	33,560		$	62,385		$	264,417
% of Grand Totals		32.08	%		28.48	%		3.16	%		12.69	%		23.59	%		100.0	%

Schedule Of Reconciliation Of Net Operating Income To Net Income

	Three months ended March 31,
	2012		2011
Net Operating Income	$	275,908	$	264,417
Add:
Development and management services income		8,149		7,428
Income from unconsolidated joint ventures		11,721		7,976
Interest and other income		1,646		974
Gains from investments in securities		801		373
Gains from early extinguishments of debt		767		—
Gain on forgiveness of debt from discontinued operations		17,807		—
Less:
General and administrative expense		27,619		24,643
Transaction costs		2,104		72
Depreciation and amortization expense		109,673		109,237
Interest expense		103,237		98,525
Loss from discontinued operations		156		497
Noncontrolling interest in property partnerships		546		529
Noncontrolling interest—redeemable preferred units of the Operating Partnership		801		823
Noncontrolling interest—common units of the Operating Partnership		6,089		6,090
Noncontrolling interest in discontinued operations—common units of the Operating Partnership		1,942		(61	)
Net income attributable to Boston Properties, Inc.	$	64,632	$	40,813