Income Taxes - Additional Information (Details)		3 Months Ended				9 Months Ended	12 Months Ended
	Nov. 01, 2013 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Sep. 30, 2017 USD ($)	Dec. 31, 2014 USD ($)	Sep. 30, 2017 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Oct. 15, 2018 USD ($)
Income Taxes [Line Items]
Tax Act, measurement period adjustment, income tax expense							$ 1,200,000
Tax Act, measurement period adjustment, increase in effective tax rate							0.013
Tax Act, deferred tax assets, provisional income tax expense			$ 257,000,000.0					$ 261,300,000
Tax Act, deferred tax assets, measurement period adjustment, income tax expense							$ 300,000
Tax Act, transition tax, provisional income tax expense								2,600,000
Tax Act, transition tax, measurement period adjustment, income tax expense							900,000
Tax Act, transition tax, liability		$ 3,200,000					3,200,000
Tax Act, GILTI provision, income tax expense							300,000
Real property assets		6,868,768,000	2,756,669,000				6,868,768,000	2,756,669,000
Three-year cumulative pretax income		185,500,000		$ 76,600,000		$ 76,600,000	185,500,000
Income (loss) before income taxes					$ (161,500,000)		89,921,000	(25,044,000)	$ 120,617,000
Impairment charges					$ 155,300,000	$ 29,900,000			0	$ 40,000,000.0	$ 159,900,000	$ 798,300,000
Valuation allowance released		22,400,000		$ 766,200,000			18,275,000	741,872,000	20,675,000
Valuation allowance		89,508,000	113,699,000				89,508,000	113,699,000
Tax benefit associated with net operating loss carryforwards		53,200,000					53,200,000
Increase (decrease) in valuation allowance							(24,200,000)
Tax reserves, interest and penalties related to current year tax positions							0
Tax reserves, interest and penalties related to prior year tax positions							800,000
Reversal of previously recorded tax reserves and accrued interest for tax positions settled and/or closed							2,200,000
Unrecognized tax benefits, including accrued interest and penalties		30,400,000					30,400,000
Net tax expense in connection with uncertain tax positions							500,000
Tax positions that, if reversed, would affect the effective tax rate		23,600,000	25,100,000				23,600,000	25,100,000
Unrecognized tax benefits, currency translation and settlements (less than in 2018)		100,000	100,000				100,000	100,000
Interest and penalties recognized, net of deferred taxes							500,000	1,700,000
Reductions in previously accrued interest and penalties							200,000
Prepaid income taxes		14,900,000	$ 12,000,000.0				14,900,000	12,000,000.0
Domestic
Income Taxes [Line Items]
Income (loss) before income taxes							89,582,000	$ (29,538,000)	$ 116,693,000
Net operating loss carryforwards		252,800,000					252,800,000
Interest limitation carryforward		18,000,000.0					18,000,000.0
Net operating loss and interest limitation carryforwards, subject to expiration		182,100,000					182,100,000
State
Income Taxes [Line Items]
Net operating loss carryforwards		835,200,000					835,200,000
Net operating loss carryforwards, valuation allowance		$ 32,100,000					32,100,000
Increase in net operating loss carryforwards from acquisitions							$ 382,000,000.0
Pinnacle
Income Taxes [Line Items]
Gross deferred income tax assets, acquisition													$ 1,000,000,000.0
Gross deferred tax liabilities, acquisition													$ 1,400,000,000
Failed spin-off leaseback
Income Taxes [Line Items]
Real property assets	$ 2,000,000,000.0
Financing obligation	3,500,000,000
Increase in net deferred tax assets	$ 599,900,000