Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2016
Accumulated Other Comprehensive Income (Loss) of the Company [Roll Forward]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 5,517,198	$ 5,947,855	$ 6,589,454	$ 5,517,198	$ 5,947,855	$ 7,750,911
Other comprehensive (loss) income before reclassifications	(43,495)	(2,304)	(2,733)
Amounts reclassified from accumulated other comprehensive loss	(98)	(1,192)	(800)
Ending Balance	5,517,198	5,947,855	6,589,454
Deferred net losses from terminated hedges				(700)	1,300
Net unrealized (loss) gain on derivative instruments
Accumulated Other Comprehensive Income (Loss) of the Company [Roll Forward]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	(22,780)	9,716	12,542	(22,780)	9,716	12,596
Other comprehensive (loss) income before reclassifications	(32,723)	(2,252)	(1,618)
Amounts reclassified from accumulated other comprehensive loss	227	(574)	1,564
Ending Balance	(22,780)	9,716	12,542
Net unrealized gain on marketable securities
Accumulated Other Comprehensive Income (Loss) of the Company [Roll Forward]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	2,277	1,093	1,042	2,277	1,093	5,520
Other comprehensive (loss) income before reclassifications	1,184	51	(1,348)
Amounts reclassified from accumulated other comprehensive loss	0	0	(3,130)
Ending Balance	2,277	1,093	1,042
Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) of the Company [Roll Forward]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	(28,485)	15,108	18,604	(28,485)	15,108	22,137
Ending Balance	(28,485)	15,108	18,604
Joint venture \| Net unrealized (loss) gain on derivative instruments
Accumulated Other Comprehensive Income (Loss) of the Company [Roll Forward]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	(7,982)	4,299	5,020	$ (7,982)	$ 4,299	$ 4,021
Other comprehensive (loss) income before reclassifications	(11,956)	(103)	233
Amounts reclassified from accumulated other comprehensive loss	(325)	(618)	766
Ending Balance	$ (7,982)	$ 4,299	$ 5,020

Accumulated Other Comprehensive Income (Loss) of the Company [Roll Forward]

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Other Comprehensive Income (Loss), Deferred Net Loss from Terminated Hedges

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Amount after tax, before reclassification adjustments of other comprehensive income (loss).

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Amount after tax of reclassification adjustments of other comprehensive income (loss).

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Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.

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