Long-Term Debt - New Issuances (Details) - Senior Notes - 3.750% Senior Notes Due 2029	Jan. 13, 2021 USD ($)
Debt Instrument [Line Items]
Aggregate principal amount	$ 900,000,000
Stated interest rate	3.75%

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

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Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant