Segment Information (Tables)

12 Months Ended

Dec. 31, 2014

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, 2014:

	Boston			New York			San Francisco			Washington, DC			Total
Rental Revenue:
Class A Office	$	692,116		$	928,692		$	237,381		$	381,930		$	2,240,119
Office/Technical	23,801			—			23,840			14,344			61,985
Residential	4,528			—			—			21,665			26,193
Hotel	43,385			—			—			—			43,385
Total	763,830			928,692			261,221			417,939			2,371,682
% of Grand Totals	32.21		%	39.16		%	11.01		%	17.62		%	100.00		%
Rental Expenses:
Class A Office	270,947			315,330			85,178			131,447			802,902
Office/Technical	7,173			—			4,955			4,338			16,466
Residential	1,957			—			—			13,965			15,922
Hotel	29,236			—			—			—			29,236
Total	309,313			315,330			90,133			149,750			864,526
% of Grand Totals	35.78		%	36.47		%	10.43		%	17.32		%	100.00		%
Net operating income	$	454,517		$	613,362		$	171,088		$	268,189		$	1,507,156
% of Grand Totals	30.16		%	40.70		%	11.35		%	17.79		%	100.00		%

For the year ended December 31, 2013:

	Boston			New York			San Francisco			Washington, DC			Total
Rental Revenue:
Class A Office	$	665,991		$	725,566		$	214,755		$	381,359		$	1,987,671
Office/Technical	22,617			—			17,259			15,649			55,525
Residential	4,395			—			—			17,923			22,318
Hotel	40,330			—			—			—			40,330
Total	733,333			725,566			232,014			414,931			2,105,844
% of Grand Totals	34.82		%	34.46		%	11.02		%	19.70		%	100.00		%
Rental Expenses:
Class A Office	259,997			251,640			77,905			126,507			716,049
Office/Technical	6,879			—			3,708			4,190			14,777
Residential	1,823			—			—			10,307			12,130
Hotel	28,447			—			—			—			28,447
Total	297,146			251,640			81,613			141,004			771,403
% of Grand Totals	38.52		%	32.62		%	10.58		%	18.28		%	100.00		%
Net operating income	$	436,187		$	473,926		$	150,401		$	273,927		$	1,334,441
% of Grand Totals	32.69		%	35.51		%	11.27		%	20.53		%	100.00		%

For the year ended December 31, 2012:

	Boston			New York			San Francisco			Washington, DC			Total
Rental Revenue:
Class A Office	$	617,652		$	543,194		$	208,177		$	346,402		$	1,715,425
Office/Technical	22,460			—			494			16,264			39,218
Residential	3,936			—			—			16,632			20,568
Hotel	37,915			—			—			—			37,915
Total	681,963			543,194			208,671			379,298			1,813,126
% of Grand Totals	37.61		%	29.96		%	11.51		%	20.92		%	100.00		%
Rental Expenses:
Class A Office	242,904			187,987			75,542			111,049			617,482
Office/Technical	6,499			—			149			3,966			10,614
Residential	1,675			—			—			9,317			10,992
Hotel	28,120			—			—			—			28,120
Total	279,198			187,987			75,691			124,332			667,208
% of Grand Totals	41.85		%	28.18		%	11.34		%	18.63		%	100.00		%
Net operating income	$	402,765		$	355,207		$	132,980		$	254,966		$	1,145,918
% of Grand Totals	35.15		%	31.00		%	11.60		%	22.25		%	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. (in thousands):

	Year ended December 31,
		2014			2013		2012
Net Operating Income		$	1,507,156		$	1,334,441	$	1,145,918
Add:
Development and management services income		25,316			29,695		34,060
Income from unconsolidated joint ventures		12,769			75,074		49,078
Gains on consolidation of joint ventures		—			385,991		—
Interest and other income		8,765			8,310		10,091
Gains from investments in securities		1,038			2,911		1,389
Gains (losses) from early extinguishments of debt		(10,633		)	122		(4,453		)
Income from discontinued operations		—			8,022		9,806
Gains on sales of real estate from discontinued operations		—			112,829		36,877
Gain on forgiveness of debt from discontinued operations		—			20,182		—
Gains on sales of real estate		168,039			—		—
Less:
General and administrative expense		98,937			115,329		90,129
Transaction costs		3,140			1,744		3,653
Depreciation and amortization expense		628,573			560,637		445,875
Interest expense		455,743			446,880		410,970
Impairment loss		—			8,306		—
Impairment loss from discontinued operations		—			3,241		—
Noncontrolling interest in property partnerships		30,561			1,347		3,792
Noncontrolling interest—redeemable preferred units of the Operating Partnership		1,023			6,046		3,497
Noncontrolling interest—common units of the Operating Partnership		50,862			70,085		30,125
Noncontrolling interest in discontinued operations—common units of the Operating Partnership		—			14,151		5,075
Preferred dividends		10,500			8,057		—
Net income attributable to Boston Properties, Inc. common shareholders		$	433,111		$	741,754	$	289,650