Employee Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Retirement Benefits [Abstract]
Other compensation liabilities	$ 44.5	$ 39.9
Assets invested in defined contribution plans	44.7	40.0
Increase in deferred compensation liability	4.8	4.9	$ 3.5
Increase in defined contribution plan assets	4.9	4.9	3.5
Expenses in relation to qualified & non-qualified plans	$ 5.5	$ 6.0	$ 8.5