Reportable Segments (Tables)

3 Months Ended

Mar. 31, 2018

Segment Reporting [Abstract]

Schedule of Reconciliation of NOI from Rental Real Estate Specific to Continuing Operations

ThefollowingtablepresentsareconciliationofNOIfromourrentalrealestateforthe quarters ended March 31, 2018 and 2017, respectively (amounts inthousands):

	Quarter Ended March 31,
	2018			2017
Rental income	$	632,831		$	603,920
Property and maintenance expense		(108,202	)		(102,608	)
Real estate taxes and insurance expense		(91,914	)		(81,728	)
Total operating expenses		(200,116	)		(184,336	)
Net operating income	$	432,715		$	419,584

Schedule of NOI for Each Segment from Rental Real Estate Specific to Continuing Operations

The following tables present NOI for each segment from our rental real estate for the quarters ended March 31, 2018 and 2017,respectively,aswellastotalassetsandcapitalexpendituresat March 31, 2018(amounts inthousands):

	Quarter Ended March 31, 2018							Quarter Ended March 31, 2017
	Rental Income		Operating Expenses		NOI			Rental Income		Operating Expenses		NOI
Same store (1)
Los Angeles	$	102,484	$	29,860	$	72,624		$	98,636	$	28,651	$	69,985
Orange County		22,502		5,527		16,975			21,656		5,462		16,194
San Diego		22,493		5,963		16,530			21,723		5,799		15,924
Subtotal - Southern California		147,479		41,350		106,129			142,015		39,912		102,103
San Francisco		109,212		26,995		82,217			106,306		26,928		79,378
Washington D.C.		107,155		33,663		73,492			106,443		32,332		74,111
New York		119,626		47,825		71,801			119,363		45,439		73,924
Boston		57,814		16,672		41,142			56,388		15,783		40,605
Seattle		48,611		13,688		34,923			46,425		13,015		33,410
Other Markets		487		165		322			464		196		268
Total same store		590,384		180,358		410,026			577,404		173,605		403,799
Non-same store/other (2) (3)
Non-same store		38,622		13,733		24,889			15,961		5,894		10,067
Other (3)		3,825		6,025		(2,200	)		10,555		4,837		5,718
Total non-same store/other		42,447		19,758		22,689			26,516		10,731		15,785
Totals	$	632,831	$	200,116	$	432,715		$	603,920	$	184,336	$	419,584

(1) For the quarters ended March 31, 2018 and 2017, same store primarily includes all properties acquired or completed that were stabilized prior to January 1, 2017, less properties subsequently sold, which represented 72,204 apartmentunits.

(2) For the quarters ended March 31, 2018 and 2017, non-same store primarily includes properties acquired after January 1, 2017, plus any properties in lease-up and not stabilized as of January 1,2017.

(3) Other includes development, other corporate operations and operations prior to disposition for properties sold.

	Quarter Ended March 31, 2018
	Total Assets		Capital Expenditures
Same store (1)
Los Angeles	$	2,670,909	$	5,939
Orange County		325,898		1,620
San Diego		417,593		1,270
Subtotal - Southern California		3,414,400		8,829
San Francisco		3,020,673		8,743
Washington D.C.		3,771,999		5,964
New York		4,447,994		5,216
Boston		1,637,837		4,358
Seattle		1,306,512		3,048
Other Markets		12,918		77
Total same store		17,612,333		36,235
Non-same store/other (2) (3)
Non-same store		2,276,821		454
Other (3)		494,716		58
Total non-same store/other		2,771,537		512
Totals	$	20,383,870	$	36,747

(1) Same store primarily includes all properties acquired or completed that were stabilized prior to January 1, 2017, less properties subsequently sold, which represented 72,204 apartmentunits.

(2) Non-same store primarily includes properties acquired after January 1, 2017, plus any properties in lease-up and not stabilized as of January 1,2017.

(3) Other includes development, other corporate operations and capital expenditures for propertiessold.