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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

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