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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Notes and Other Debt - Schedule of Notes and Other Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Feb. 02, 2021	Dec. 31, 2020	Dec. 10, 2020
Debt Instrument [Line Items]
Debt instrument carrying amount	$ 5,073,819		$ 4,965,000
Less unamortized discount, premium and debt issuance costs	(84,929)		(148,476)
Notes and other debt less unamortized discount, premium and debt issuance costs	4,988,890		4,816,524
Senior Secured Notes - 7.875% Due February 15, 2025
Debt Instrument [Line Items]
Debt instrument carrying amount	2,250,000		2,250,000
Less unamortized discount, premium and debt issuance costs	(37,808)		(39,852)
Senior Unsecured Notes - 6.50%, Due February 24, 2029
Debt Instrument [Line Items]
Debt instrument carrying amount	1,110,000	$ 1,110,000
Less unamortized discount, premium and debt issuance costs	(22,263)
Senior Secured Notes - 6.00% Due April 15, 2023
Debt Instrument [Line Items]
Debt instrument carrying amount	550,000		550,000
Less unamortized discount, premium and debt issuance costs	(3,642)		(4,053)
Senior Unsecured Notes - 8.25% Due October 15, 2023
Debt Instrument [Line Items]
Debt instrument carrying amount	58,819		1,110,000
Less unamortized discount, premium and debt issuance costs	(1,142)		(22,024)
Senior Unsecured Notes - 7.125% Due December 15, 2024
Debt Instrument [Line Items]
Debt instrument carrying amount	600,000		600,000
Less unamortized discount, premium and debt issuance costs	(5,057)		(5,316)
Senior Unsecured Notes - 4.00%, Due June 15, 2024
Debt Instrument [Line Items]
Debt instrument carrying amount	345,000		345,000
Less unamortized discount, premium and debt issuance costs	(7,935)		(69,608)
Senior Secured Revolving Credit Facility
Debt Instrument [Line Items]
Debt instrument carrying amount	160,000		110,000	$ 560,500
Less unamortized discount, premium and debt issuance costs	$ (7,082)		$ (7,623)