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Schedule of Intangible Assets (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2022 | Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items] |  |
Amortizable intangible assets, gross | $ 123.5 | $ 123.5
Accumulated intangible asset amortization | (69.9) | (68.8)
Amortizable intangible assets, net | $ 53.6 | 54.7
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 | (35.5) | (35.5)
Amortizable intangible assets, net | 19.1 | 19.1
Customer-Related Intangible Assets [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Amortizable intangible assets, gross | 68.9 | 68.9
Accumulated intangible asset amortization | (34.4) | (33.3)
Amortizable intangible assets, net | $ 34.5 | $ 35.6

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