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Business Segments - Segment Assets (Details) - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Segment Reporting, Asset Reconciling Item [Line Items]      
Assets $ 1,472.0 $ 1,569.9 $ 1,399.6
Primary      
Segment Reporting, Asset Reconciling Item [Line Items]      
Assets 1,432.4 1,513.3 1,332.0
Corporate, unallocated      
Segment Reporting, Asset Reconciling Item [Line Items]      
Assets $ 39.6 $ 56.6 $ 67.6