Debt - Senior Notes (Details) - Senior Notes - USD ($)	Aug. 18, 2020	Dec. 31, 2020
Debt Instrument
Stated interest rate (percent)		3.875%
USD Senior Notes Due 2025
Debt Instrument
Stated interest rate (percent)		5.875%
Debt face amount		$ 800,000,000
USD Senior Notes Due 2028
Debt Instrument
Stated interest rate (percent)	3.875%	3.875%
Debt face amount		$ 800,000,000
Debt expense	$ 45,700,000
Debt premium	33,600,000
Debt instrument, write off of deferred debt issuance cost	$ 12,100,000

Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.

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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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Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

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