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Business Segments - Balance Sheet Items (Details) - USD ($)
$ in Millions
Sep. 30, 2023
Dec. 31, 2022
Accounts receivable, net:    
Allowance for credit losses $ 17.0 $ 14.1
Accounts receivable 2,882.2 3,294.1
Total assets:    
Total assets 7,483.1 8,164.6
Corporate    
Total assets:    
Total assets 509.4 410.8
Land segment    
Accounts receivable, net:    
Allowance for credit losses 6.6 5.8
Accounts receivable 860.0 1,141.9
Land segment | Operating Segments    
Total assets:    
Total assets 3,245.0 3,710.1
Marine segment    
Accounts receivable, net:    
Allowance for credit losses 3.0 3.4
Accounts receivable 619.7 699.8
Marine segment | Operating Segments    
Total assets:    
Total assets 901.3 1,007.4
Aviation segment    
Accounts receivable, net:    
Allowance for credit losses 7.4 4.9
Accounts receivable 1,402.5 1,452.4
Aviation segment | Operating Segments    
Total assets:    
Total assets $ 2,827.4 $ 3,036.2