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Revenue Recognition Contract Assets & Liabilities (Details) - USD ($)
$ in Millions
Mar. 31, 2024
Dec. 31, 2023
Disaggregation of Revenue [Line Items]    
Contract with Customer, Asset, before Allowance for Credit Loss $ 375.5 $ 402.3
Contract with Customer, Asset, Allowance for Credit Loss (1.7) (1.8)
Contract with Customer, Asset, after Allowance for Credit Loss 373.8 400.5
Contract with Customer, Liability $ 146.6 $ 166.2