Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Face (par) amount of debt instrument at time of issuance.

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

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Long-Term Debt - Narrative (Details) - USD ($)			6 Months Ended
Long-Term Debt - Narrative (Details) - USD ($)	Jun. 21, 2021	Mar. 19, 2021	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Debt Instrument [Line Items]
Redemption of debt			$ 1,287,022,000	$ 0
Loss on extinguishment of long-term borrowings			83,213,000	0
Long-term debt			2,880,000,000	2,900,000,000	$ 2,900,000,000
Senior Notes \| 2021 Senior Notes due April 2026
Debt Instrument [Line Items]
Principal of debt instrument		$ 600,000,000
Interest rate		3.375%
Long-term debt			600,000,000	0	0
Senior Notes \| 2021 Senior Notes due April 2029
Debt Instrument [Line Items]
Principal of debt instrument		$ 600,000,000
Interest rate		3.75%
Long-term debt			600,000,000	0	0
Senior Notes \| 2017/2018 Senior Notes due December 2025
Debt Instrument [Line Items]
Interest rate		6.75%
Redemption of debt		$ 1,225,000,000
Loss on extinguishment of long-term borrowings		83,200,000
Debt prepayment premium costs		62,000,000.0
Write-off of unamortized debt issuance costs		21,200,000
Long-term debt		$ 275,000,000	$ 275,000,000	$ 1,500,000,000	$ 1,500,000,000
Redemption price percentage	105.063%