Fair Value of Financial Instruments and Debt - Narrative (Details) - 2.800% senior notes due 2021 - Senior Notes - USD ($)	Oct. 08, 2021	Sep. 30, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed interest rate (as a percent)		2.80%
Aggregate principal amount		$ 500,000,000
Subsequent event
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed interest rate (as a percent)	2.80%
Aggregate principal amount	$ 500,000,000
Proportion of principal redeemed (as a percent)	100.00%