Employee Benefit Plans (Assets Measured at NAV) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Assets Category:
Fair Value	$ 156.5	$ 131.1
NAV [Member]
Assets Category:
Fair Value	156.4	130.2
Commingled Pools / Collective Trusts [Member] | U.S. Equity [Member]
Assets Category:
Fair Value		$ 33.3
Redemption Frequency (if currently eligible)		Daily
Commingled Pools / Collective Trusts [Member] | International Equity [Member]
Assets Category:
Fair Value		$ 19.8
Redemption Frequency (if currently eligible)		Daily
Commingled Pools / Collective Trusts [Member] | Fixed Income [Member]
Assets Category:
Fair Value	$ 130.8	$ 52.5
Redemption Frequency (if currently eligible)	Daily	Daily
Balanced pension trusts [Member] | International Equity [Member]
Assets Category:
Fair Value		$ 3.3
Redemption Frequency (if currently eligible)	Daily	Daily
Balanced pension trusts [Member] | Fixed Income [Member]
Assets Category:
Fair Value	$ 11.1	$ 8.3
Redemption Frequency (if currently eligible)	Daily	Daily
Pension Funds [Member] | Fixed Income [Member]
Assets Category:
Fair Value		$ 13.0
Redemption Frequency (if currently eligible)	Daily	Daily
Pension Fund Member | Fixed Income [Member]
Assets Category:
Fair Value	$ 14.0	$ 13.0
Fair Value, Inputs, Level 2 [Member]
Assets Category:
Fair Value	156.4	130.2
Fair Value, Inputs, Level 2 [Member] | Commingled Pools / Collective Trusts [Member] | Fixed Income [Member]
Assets Category:
Fair Value	130.8	52.5
Fair Value, Inputs, Level 2 [Member] | Balanced pension trusts [Member] | Fixed Income [Member]
Assets Category:
Fair Value	11.1	8.3
Fair Value, Inputs, Level 2 [Member] | Pension Fund Member | Fixed Income [Member]
Assets Category:
Fair Value	$ 14.0	$ 13.0