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Segment Information - Long-Lived Assets by Geographic Areas (Details) - USD ($)
$ in Millions
Mar. 31, 2024
Dec. 31, 2023
Segment Reporting Information [Line Items]    
Long-Lived Assets [1] $ 5,145.3 $ 5,176.9
United States    
Segment Reporting Information [Line Items]    
Long-Lived Assets [1] 4,935.6 4,962.6
Canada    
Segment Reporting Information [Line Items]    
Long-Lived Assets [1],[2] $ 209.7 $ 214.3
[1] Reflects total assets less current assets, investments and non-current deferred tax assets.
[2] Includes amounts reclassified as Assets held for sale on the Consolidated Statement of Financial Position.