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Long-term Debt and Finance Leases - Issuance of Senior Notes (Details) - Recourse Debt - USD ($)	Dec. 02, 2020	Dec. 31, 2020	Dec. 31, 2019	May 28, 2019	May 24, 2019	May 14, 2019
3.375% Senior Notes Due 2029
Debt Instrument [Line Items]
Aggregate principal amount	$ 500,000,000
Interest rate, stated percentage	3.375%	3.375%
3.625% Senior Unsecured Notes Due 2031 [Member]
Debt Instrument [Line Items]
Aggregate principal amount	$ 1,000,000,000.0
Interest rate, stated percentage	3.625%	3.625%
Senior Secured First Lien Notes due 2025 to 2027
Debt Instrument [Line Items]
Aggregate principal amount	$ 1,400,000,000
Basis point increase to interest rate	0.25%
Senior Secured First Lien Notes, due 2025
Debt Instrument [Line Items]
Aggregate principal amount	$ 500,000,000
Interest rate, stated percentage	2.00%	2.00%
Senior Secured First Lien Notes, due 2027
Debt Instrument [Line Items]
Aggregate principal amount	$ 900,000,000
Interest rate, stated percentage	2.45%	2.45%
5.25% Senior Notes due 2029
Debt Instrument [Line Items]
Aggregate principal amount						$ 733,000,000
Interest rate, stated percentage		5.25%			5.25%	5.25%
6.25% Senior Notes due 2024
Debt Instrument [Line Items]
Interest rate, stated percentage		6.25%	6.25%
Senior Secured First Lien Notes, Due 2024 and 2029
Debt Instrument [Line Items]
Aggregate principal amount				$ 1,100,000,000
Senior Secured First Lien Notes, Due 2024
Debt Instrument [Line Items]
Aggregate principal amount				$ 600,000,000
Interest rate, stated percentage		3.75%		2.75%
Senior Secured First Lien Notes, Due 2029
Debt Instrument [Line Items]
Aggregate principal amount				$ 500,000,000
Interest rate, stated percentage		4.45%		4.45%

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Contractual interest rate for funds borrowed, under the debt agreement.

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