Lease expenses (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Lessee, Lease, Description [Line Items]
Variable lease costs	$ 28.3	$ 31.6	$ 81.5	$ 90.5
Cash paid for operating leases	105.4	108.6	342.9	364.6	[1]
Leased assets obtained in exchange for new operating lease liabilities	90.2	40.8	203.5	146.4
Operating	230.7	233.1	683.5	711.6
Operating expense
Lessee, Lease, Description [Line Items]
Operating lease expenses	110.3	119.3	331.0	362.3
Selling, general and administrative
Lessee, Lease, Description [Line Items]
Operating lease expenses	$ 3.2	$ 2.9	$ 9.2	$ 10.8

[1] In the nine months ended September 30, 2024, includes amounts related to Canada.