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Revenue Recognition Contract Assets & Liabilities (Details) - USD ($)
$ in Millions
Mar. 31, 2022
Dec. 31, 2021
Disaggregation of Revenue [Line Items]    
Contract with Customer, Asset, after Allowance for Credit Loss $ 446.8 $ 435.9
Contract with Customer, Asset, Allowance for Credit Loss (2.7) (2.8)
Contract with Customer, Asset, before Allowance for Credit Loss 449.5 438.7
Contract with Customer, Liability $ 123.0 $ 128.9