Summary of Significant Accounting Policies - Balance Sheet Adoption Effect (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Jan. 01, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Prepaid expenses and other current assets, net	$ 84,241		$ 106,189
Property, plant and equipment and leasehold intangibles, net	5,109,834		5,275,427
Operating lease right-of-use assets	1,159,738		0
Investment in unconsolidated ventures	21,210		27,528
Other intangible assets, net	35,198		51,472
Other assets, net	83,533		160,418
Total assets	7,194,433		6,467,260
Refundable fees and deferred revenue	79,402		62,494
Operating Lease, Liability	1,470,765
Deferred liabilities	7,569		262,761
Other liabilities	161,448		197,289
Total liabilities	6,495,708		5,448,847
Total equity	698,725		1,018,413	$ 1,530,291	$ 2,077,732
Total liabilities and equity	$ 7,194,433		$ 6,467,260
ASU 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Prepaid expenses and other current assets, net		$ 67,000
Property, plant and equipment and leasehold intangibles, net		(11,000)
Operating lease right-of-use assets		1,329,000
Investment in unconsolidated ventures		(2,000)
Other intangible assets, net		(5,000)
Other assets, net		(73,000)
Total assets		1,305,000
Refundable fees and deferred revenue		43,000
Operating Lease, Liability		1,618,000
Deferred liabilities		(257,000)
Other liabilities		(43,000)
Total liabilities		1,361,000
Total equity		(56,000)
Total liabilities and equity		$ 1,305,000