Debt - Senior Notes (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023	May 31, 2023	Nov. 30, 2021	Mar. 31, 2018
Debt Instrument [Line Items]
Long-term debt	$ 1,785.0
Senior Notes | Senior Notes, Due 2028
Debt Instrument [Line Items]
Debt face amount					$ 500.0
Average interest rate					4.55%
Long-term debt	$ 500.0	$ 500.0
Senior Notes | Senior Notes, Due 2031
Debt Instrument [Line Items]
Average interest rate	6.679%
Long-term debt	$ 288.8	292.5		$ 300.0
Senior Notes | Senior Notes Due 2033
Debt Instrument [Line Items]
Average interest rate				2.75%
Long-term debt	$ 300.0	$ 300.0	$ 500.0