Business Segments - Balance Sheet Items (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Accounts receivable, net:
Allowance for credit losses	$ 14.5	$ 14.1
Accounts receivable	2,997.2	3,294.1
Total assets:
Total assets	7,485.8	8,164.6
Corporate
Total assets:
Total assets	585.2	410.8
Land segment
Accounts receivable, net:
Allowance for credit losses	5.8	5.8
Accounts receivable	884.7	1,141.9
Land segment | Operating Segments
Total assets:
Total assets	3,116.6	3,710.1
Marine segment
Accounts receivable, net:
Allowance for credit losses	3.2	3.4
Accounts receivable	533.4	699.8
Marine segment | Operating Segments
Total assets:
Total assets	818.2	1,007.4
Aviation segment
Accounts receivable, net:
Allowance for credit losses	5.5	4.9
Accounts receivable	1,579.1	1,452.4
Aviation segment | Operating Segments
Total assets:
Total assets	$ 2,965.7	$ 3,036.2