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Debt - Schedule of information about debt (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2026	Dec. 31, 2025	Oct. 31, 2025
Debt Instrument [Line Items]
Total debt, gross	$ 3,715.4	$ 3,967.9
Less: unamortized deferred financing costs	(17.6)	(21.6)	$ (8.0)
Total debt	3,697.8	3,946.3
Current portion of debt	37.0	30.8
Debt, net of current portion	$ 3,660.8	3,915.5
Revolving credit facility
Debt Instrument [Line Items]
Less: unamortized deferred financing costs			$ (3.8)
Senior secured credit facilities: \| Euro term loans B-6 \| Euro
Debt Instrument [Line Items]
Interest terms	2.50%
Rate	4.403%
Total debt, gross	$ 427.1	645.2
Senior secured credit facilities: \| Euro term loans A-1 \| Euro
Debt Instrument [Line Items]
Interest terms	1.50%
Rate	3.403%
Total debt, gross	$ 450.9	469.2
Senior secured credit facilities: \| Revolving credit facility
Debt Instrument [Line Items]
Capacity	1,400.0
Undrawn letters of credit outstanding	(20.2)
Unused availability	$ 1,379.8
Notes \| 3.875% unsecured notes
Debt Instrument [Line Items]
Rate	3.875%
Total debt, gross	$ 800.0	800.0
Notes \| 3.875% Euro unsecured notes
Debt Instrument [Line Items]
Rate	3.875%
Total debt, gross	$ 456.6	469.2
Notes \| 4.625% unsecured notes
Debt Instrument [Line Items]
Rate	4.625%
Total debt, gross	$ 1,550.0	1,550.0
Finance lease liabilities
Debt Instrument [Line Items]
Total debt, gross	25.6	26.9
Other Debt
Debt Instrument [Line Items]
Total debt, gross	$ 5.2	$ 7.4