Fair Value Measurements - Carrying Value and Estimated Fair Values of Outstanding Debt (Details) - Senior Notes - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	$ 1,211.7	$ 1,214.9
Estimate of Fair Value, Fair Value Disclosure
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 1,059.0	1,060.9
3.875% senior notes due in 2028
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate on notes	3.875%
Carrying Value	$ 469.3	473.5
3.875% senior notes due in 2028 | Estimate of Fair Value, Fair Value Disclosure
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 422.5	418.7
4.375% senior notes due in 2029
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate on notes	4.375%
Carrying Value	$ 742.4	741.4
4.375% senior notes due in 2029 | Estimate of Fair Value, Fair Value Disclosure
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 636.5	$ 642.2