Long-Term Debt - U.K. Credit Agreement (Details) £ in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($)	Jan. 31, 2023 GBP (£)	Dec. 31, 2022 GBP (£)	Dec. 31, 2021 USD ($)
Debt Instrument
Long-term debt | $	$ 1,622.1			$ 1,474.0
U.K. credit agreement — revolving credit line
Debt Instrument
Maximum credit available			£ 150.0
Long-term debt	$ 24.2		£ 20.0	0.0
U.K. credit agreement — revolving credit line | Subsequent Event
Debt Instrument
Maximum credit available		£ 200.0
Additional facility capacity under accordion feature		£ 100.0
U.K. credit agreement — revolving credit line | Minimum | Sterling Overnight Index Average (SONIA)
Debt Instrument
Line of credit basis spread on variable rate (as a percent)	1.10%
U.K. credit agreement — revolving credit line | Maximum | Sterling Overnight Index Average (SONIA)
Debt Instrument
Line of credit basis spread on variable rate (as a percent)	2.10%
U.K. credit agreement — overdraft line of credit
Debt Instrument
Long-term debt | $	$ 0.0			$ 0.0