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Schedule of Intangible Assets (Details) - USD ($) $ in Millions | Mar. 31, 2024 | Dec. 31, 2023
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Finite-Lived Intangible Assets [Line Items] |  |
Amortizable intangible assets, gross | $ 123.5 | $ 123.5
Accumulated intangible asset amortization | (85.2) | (84.1)
Amortizable intangible assets, net | $ 38.3 | 39.4
Average useful life of finite-lived intangible assets | 15 years |
Contract-Based Intangible Assets [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Amortizable intangible assets, gross | $ 54.6 | 54.6
Accumulated intangible asset amortization | (41.6) | (41.6)
Amortizable intangible assets, net | 13.0 | 13.0
Customer-Related Intangible Assets [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Amortizable intangible assets, gross | 68.9 | 68.9
Accumulated intangible asset amortization | (43.6) | (42.5)
Amortizable intangible assets, net | $ 25.3 | $ 26.4

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