Summary Of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2017

Accounting Policies [Abstract]

Rollforward table of the redeemable noncontrolling interest

The following table provides a rollforward of the redeemable noncontrolling interests:

	Year Ended
	December 31,
	2017			2016
	(In thousands)
Beginning balance	$	143,694		$	137,316
Contributions	11,109			—
Net income	3,874			2,713
Distributions & Redemptions	(6,914		)	(16,426		)
Change in redemption value	(10,606		)	20,091
Ending balance	$	141,157		$	143,694

Schedule of supplemental disclosures related to the Consolidated Statements Of Cash Flows

The following table provides supplemental disclosures related to the Consolidated Statements of Cash Flows:

	Year Ended December 31,
	2017			2016			2015
	(In thousands)
SUPPLEMENTAL DISCLOSURES:
Total interest costs incurred	$	125,684		$	113,016		$	110,675
Interest capitalized	(25,559		)	(18,022		)	(18,122		)
Interest expense	$	100,125		$	94,994		$	92,553
Cash paid for interest, net of amounts capitalized	$	105,201		$	90,185		$	116,335
Cash paid for income taxes	$	352		$	296		$	274
NON-CASH INVESTING AND FINANCING TRANSACTIONS:
Mortgage loans refinanced	$	166,823		$	—		$	—
Mortgage loans assumed with acquisition	$	79,401		$	34,385		$	89,516
DownREIT operating partnership units issued with acquisition	$	5,918		$	—		$	7,742
DownREIT operating partnership units redeemed for common shares	$	2,569		$	18,679		$	4,114
Shares issued under dividend reinvestment plan	$	2,017		$	2,017		$	1,977