Fair Value Measurements - Items not at Fair Value (Details) - Level 2 - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Fair Value of Debt Instruments
Total fair value of long term debt	$ 1,987.2	$ 2,374.5
2029 Senior Notes
Fair Value of Debt Instruments
Total fair value of long term debt	268.2	460.2
2028 Term Loan B
Fair Value of Debt Instruments
Total fair value of long term debt	685.5	737.4
2025 Senior Notes
Fair Value of Debt Instruments
Total fair value of long term debt	393.7	509.4
2024 Term Loan B
Fair Value of Debt Instruments
Total fair value of long term debt	$ 639.8	$ 667.5