Segment Information (Tables)

12 Months Ended

Dec. 31, 2012

Segment Reporting [Abstract]

Schedule Of Segment Information By Geographic Area And Property Type

Information by geographic area and property type (dollars in thousands):

For the year ended December 31, 2012:

	Boston			New York			Princeton			San Francisco			Washington, DC			Total
Rental Revenue:
Class A Office	$	620,586		$	481,844		$	61,350		$	214,316		$	366,393		$	1,744,489
Office/Technical	22,460			—			—			494			16,264			39,218
Residential	3,936			—			—			—			16,632			20,568
Hotel	37,915			—			—			—			—			37,915
Total	684,897			481,844			61,350			214,810			399,289			1,842,190
% of Grand Totals	37.18		%	26.16		%	3.33		%	11.66		%	21.67		%	100.00		%
Rental Expenses:
Class A Office	244,753			160,386			29,218			84,262			117,138			635,757
Office/Technical	6,499			—			—			149			3,966			10,614
Residential	1,675			—			—			—			9,317			10,992
Hotel	28,120			—			—			—			—			28,120
Total	281,047			160,386			29,218			84,411			130,421			685,483
% of Grand Totals	41.00		%	23.40		%	4.26		%	12.31		%	19.03		%	100.00		%
Net operating income	$	403,850		$	321,458		$	32,132		$	130,399		$	268,868		$	1,156,707
% of Grand Totals	34.91		%	27.79		%	2.78		%	11.27		%	23.25		%	100.00		%

For the year ended December 31, 2011:

	Boston			New York			Princeton			San Francisco			Washington, DC			Total
Rental Revenue:
Class A Office	$	540,924		$	458,791		$	62,648		$	213,257		$	359,544		$	1,635,164
Office/Technical	25,349			—			—			—			16,236			41,585
Residential	985			—			—			—			5,632			6,617
Hotel	34,529			—			—			—			—			34,529
Total	601,787			458,791			62,648			213,257			381,412			1,717,895
% of Grand Totals	35.03		%	26.71		%	3.65		%	12.41		%	22.20		%	100.00		%
Rental Expenses:
Class A Office	208,133			152,649			30,150			80,729			101,559			573,220
Office/Technical	7,245			—			—			—			4,280			11,525
Residential	521			—			—			—			4,958			5,479
Hotel	26,128			—			—			—			—			26,128
Total	242,027			152,649			30,150			80,729			110,797			616,352
% of Grand Totals	39.27		%	24.77		%	4.89		%	13.10		%	17.97		%	100.00		%
Net operating income	$	359,760		$	306,142		$	32,498		$	132,528		$	270,615		$	1,101,543
% of Grand Totals	32.66		%	27.79		%	2.95		%	12.03		%	24.57		%	100.00		%

For the year ended December 31, 2010:

	Boston			New York			Princeton			San Francisco			Washington, DC			Total
Rental Revenue:
Class A Office	$	366,200		$	445,296		$	65,475		$	215,468		$	335,508		$	1,427,947
Office/Technical	25,499			—			—			—			15,849			41,348
Residential	—			—			—			—			—			—
Hotel	32,800			—			—			—			—			32,800
Total	424,499			445,296			65,475			215,468			351,357			1,502,095
% of Grand Totals	28.26		%	29.65		%	4.36		%	14.34		%	23.39		%	100.00		%
Rental Expenses:
Class A Office	137,361			146,381			31,486			78,978			92,892			487,098
Office/Technical	6,888			—			—			—			4,168			11,056
Residential	—			—			—			—			—			—
Hotel	25,153			—			—			—			—			25,153
Total	169,402			146,381			31,486			78,978			97,060			523,307
% of Grand Totals	32.37		%	27.97		%	6.02		%	15.09		%	18.55		%	100.00		%
Net operating income	$	255,097		$	298,915		$	33,989		$	136,490		$	254,297		$	978,788
% of Grand Totals	26.06		%	30.54		%	3.47		%	13.95		%	25.98		%	100.00		%

Schedule Of Reconciliation Of Net Operating Income To Net Income

The following is a reconciliation of Net Operating Income to net income attributable to Boston Properties, Inc.:

	Year ended December 31,
		2012		2011			2010
Net Operating Income		$	1,156,707	$	1,101,543		$	978,788
Add:
Development and management services income		34,077		33,425			41,215
Income from unconsolidated joint ventures		49,078		85,896			36,774
Interest and other income		10,091		5,358			7,332
Gains (losses) from investments in securities		1,389		(443		)	935
Gains on sales of real estate		—		—			2,734
Income from discontinued operations		1,040		1,881			1,442
Gain on sale of real estate from discontinued operations		36,877		—			—
Less:
General and administrative expense		82,382		79,610			79,396
Transaction costs		3,653		1,987			2,876
Suspension of development		—		—			(7,200		)
Depreciation and amortization expense		453,068		436,612			335,859
Interest expense		413,564		394,131			378,079
Losses from early extinguishments of debt		4,453		1,494			89,883
Noncontrolling interest in property partnerships		3,792		1,558			3,464
Noncontrolling interest—redeemable preferred units of the Operating Partnership		3,497		3,339			3,343
Noncontrolling interest—common units of the Operating Partnership		31,046		36,035			23,915
Noncontrolling interest in gains on sales of real estate—common units of the Operating Partnership		—		—			349
Noncontrolling interest in discontinued operations—common units of the Operating Partnership		4,154		215			184
Net income attributable to Boston Properties, Inc.		$	289,650	$	272,679		$	159,072