Segment Information (Tables)

12 Months Ended

Dec. 31, 2017

Segment Reporting [Abstract]

Schedule Of Reconciliation Of Net Operating Income To Net Income

Boston Properties, Inc.

	Year ended December 31,
	2017		2016			2015
	(in thousands)
Net income attributable to Boston Properties, Inc. common shareholders	$	451,939	$	502,285		$	572,606
Add:
Preferred dividends	10,500		10,500			10,500
Noncontrolling interest—common units of the Operating Partnership	52,210		59,260			66,951
Noncontrolling interest—redeemable preferred units of the Operating Partnership	—		—			6
Noncontrolling interest in property partnerships	47,832		(2,068		)	149,855
Losses from interest rate contracts	—		140			—
Interest expense	374,481		412,849			432,196
Depreciation and amortization expense	617,547		694,403			639,542
Impairment loss	—		1,783			—
Transaction costs	668		2,387			1,259
General and administrative expense	113,715		105,229			96,319
Less:
Gains on sales of real estate	7,663		80,606			375,895
Gains (losses) from early extinguishments of debt	496		(371		)	(22,040		)
Gains (losses) from investments in securities	3,678		2,273			(653		)
Interest and other income	5,783		7,230			6,777
Gain on sale of investment in unconsolidated joint venture	—		59,370			—
Income from unconsolidated joint ventures	11,232		8,074			22,770
Development and management services income	34,605		28,284			22,554
Net Operating Income	$	1,605,435	$	1,601,302		$	1,563,931

Boston Properties Limited Partnership

	Year ended December 31,
		2017		2016			2015
		(in thousands)
Net income attributable to Boston Properties Limited Partnership common unitholders		$	512,866	$	575,341		$	648,748
Add:
Preferred distributions		10,500		10,500			10,500
Noncontrolling interest—redeemable preferred units		—		—			6
Noncontrolling interest in property partnerships		47,832		(2,068		)	149,855
Losses from interest rate contracts		—		140			—
Interest expense		374,481		412,849			432,196
Depreciation and amortization expense		609,407		682,776			631,549
Impairment loss		—		1,783			—
Transaction costs		668		2,387			1,259
General and administrative expense		113,715		105,229			96,319
Less:
Gains on sales of real estate		8,240		82,775			377,093
Gains (losses) from early extinguishments of debt		496		(371		)	(22,040		)
Gains (losses) from investments in securities		3,678		2,273			(653		)
Interest and other income		5,783		7,230			6,777
Gain on sale of investment in unconsolidated joint venture		—		59,370			—
Income from unconsolidated joint ventures		11,232		8,074			22,770
Development and management services income		34,605		28,284			22,554
Net Operating Income		$	1,605,435	$	1,601,302		$	1,563,931

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, 2017:

	Boston			New York			San Francisco			Washington, DC			Total
Rental Revenue:
Office	$	776,279		$	969,371		$	345,519		$	414,103		$	2,505,272
Residential	4,745			—			—			11,851			16,596
Hotel	45,603			—			—			—			45,603
Total	826,627			969,371			345,519			425,954			2,567,471
% of Grand Totals	32.20		%	37.75		%	13.46		%	16.59		%	100.00		%
Rental Expenses:
Office	301,097			372,810			105,253			144,515			923,675
Residential	2,044			—			—			4,258			6,302
Hotel	32,059			—			—			—			32,059
Total	335,200			372,810			105,253			148,773			962,036
% of Grand Totals	34.84		%	38.76		%	10.94		%	15.46		%	100.00		%
Net operating income	$	491,427		$	596,561		$	240,266		$	277,181		$	1,605,435
% of Grand Totals	30.61		%	37.15		%	14.97		%	17.27		%	100.00		%

For the year ended December 31, 2016:

	Boston			New York			San Francisco			Washington, DC			Total
Rental Revenue:
Office	$	727,265		$	1,012,518		$	318,609		$	402,561		$	2,460,953
Residential	4,812			—			—			11,887			16,699
Hotel	44,884			—			—			—			44,884
Total	776,961			1,012,518			318,609			414,448			2,522,536
% of Grand Totals	30.80		%	40.14		%	12.63		%	16.43		%	100.00		%
Rental Expenses:
Office	282,827			363,188			100,787			135,890			882,692
Residential	2,708			—			—			4,368			7,076
Hotel	31,466			—			—			—			31,466
Total	317,001			363,188			100,787			140,258			921,234
% of Grand Totals	34.41		%	39.42		%	10.94		%	15.23		%	100.00		%
Net operating income	$	459,960		$	649,330		$	217,822		$	274,190		$	1,601,302
% of Grand Totals	28.73		%	40.55		%	13.60		%	17.12		%	100.00		%

For the year ended December 31, 2015:

	Boston			New York			San Francisco			Washington, DC			Total
Rental Revenue:
Office	$	716,246		$	1,000,030		$	302,434		$	384,628		$	2,403,338
Residential	4,801			—			—			14,082			18,883
Hotel	46,046			—			—			—			46,046
Total	767,093			1,000,030			302,434			398,710			2,468,267
% of Grand Totals	31.08		%	40.52		%	12.25		%	16.15		%	100.00		%
Rental Expenses:
Office	287,341			346,897			98,206			131,581			864,025
Residential	2,006			—			—			6,221			8,227
Hotel	32,084			—			—			—			32,084
Total	321,431			346,897			98,206			137,802			904,336
% of Grand Totals	35.54		%	38.36		%	10.86		%	15.24		%	100.00		%
Net operating income	$	445,662		$	653,133		$	204,228		$	260,908		$	1,563,931
% of Grand Totals	28.50		%	41.76		%	13.06		%	16.68		%	100.00		%