Supplemental cash flow information (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022	Dec. 31, 2021
Condensed Cash Flow Statements, Captions [Line Items]
Interest	$ 110.0	$ 56.8
Income taxes, net	54.7	70.5
Financing Leases	46.8	39.6
Restricted cash	433.5		$ 438.5
Cash and cash equivalents	890.1		972.0
Total, cash, cash equivalents, and restricted cash in the condensed consolidated statements of cash flows	1,323.6	$ 1,101.9	1,410.5	$ 1,086.7
Cash Held From Customers
Condensed Cash Flow Statements, Captions [Line Items]
Restricted cash	221.2		229.3
Deposits liability
Condensed Cash Flow Statements, Captions [Line Items]
Restricted cash	165.1		156.3
Revolving Credit Facility
Condensed Cash Flow Statements, Captions [Line Items]
Restricted cash	$ 45.7		$ 40.7