Long-Term Debt - New Issuances (Details) - Senior Notes - USD ($)	Jan. 13, 2021	Aug. 12, 2020	Jun. 15, 2020
3.750% Senior Notes Due 2029
Debt Instrument [Line Items]
Aggregate principal amount	$ 900,000,000
Stated interest rate	3.75%
3.625% Senior Notes Due 2029
Debt Instrument [Line Items]
Aggregate principal amount		$ 840,000,000
Stated interest rate		3.625%
4.250% Senior Notes Due 2028
Debt Instrument [Line Items]
Aggregate principal amount			$ 1,200,000,000
Stated interest rate			4.25%