Debt (Details) € in Millions, £ in Millions, $ in Millions	9 Months Ended
	Sep. 30, 2025 USD ($)	Sep. 30, 2025 EUR (€)	Sep. 30, 2025 GBP (£)	Dec. 31, 2024 USD ($)
Short-Term Borrowings [Abstract]
Short-term debt	$ 24.1			$ 21.3
Long-Term Debt [Abstract]
Long-Term Debt, Gross	6,308.7			6,073.0
Unamortized discount	(8.8)			(9.5)
Unamortized debt issuance costs	(24.4)			(27.4)
Unamortized deferred loss from settlement of interest rate swap	(0.3)			(0.8)
Long-Term Debt, including current portion	6,275.2			6,035.3
Long-term debt, current portion	(1,399.0)			0.0
Long-Term Debt	4,876.2			6,035.3
Credit Facility [Member]
Credit Facilities [Abstract]
Credit Facilities, maximum borrowing capacity	$ 2,500.0
Credit Facilities, expiration date	Jun. 02, 2028
Credit Facilities, amount outstanding	$ 0.0
Credit Facilities, covenant terms	The Credit Facility has a financial covenant that requires us to maintain a Leverage Ratio of consolidated indebtedness to consolidated EBITDA (earnings before interest, taxes, depreciation, amortization and non-cash charges) of no more than 3.5 times for the most recently ended 12-month period.
Credit Facilities, covenant compliance	At September 30, 2025, we were in compliance with this covenant as our Leverage Ratio was 2.6 times.
Uncommitted credit lines [Member]
Credit Facilities [Abstract]
Credit Facilities, maximum borrowing capacity	$ 540.2
Commercial Paper [Member]
Credit Facilities [Abstract]
Credit Facilities, maximum borrowing capacity	2,000.0
Credit Facilities, amount outstanding	0.0
Euro Commercial Paper [Member]
Credit Facilities [Abstract]
Credit Facilities, maximum borrowing capacity	500.0
Credit Facilities, amount outstanding	0.0
3.60% Senior Notes due 2026
Long-Term Debt [Abstract]
Long-Term Debt, Gross	$ 1,400.0			1,400.0
Long-term debt, interest rate	3.60%	3.60%	3.60%
€500 million 0.80% Senior Notes due 2027
Long-Term Debt [Abstract]
Long-Term Debt, Gross	$ 585.3	€ 500.0		520.3
Long-term debt, interest rate	0.80%	0.80%	0.80%
2.45% Senior Notes due 2030
Long-Term Debt [Abstract]
Long-Term Debt, Gross	$ 600.0			600.0
Long-term debt, interest rate	2.45%	2.45%	2.45%
4.20% Senior Notes due 2030
Long-Term Debt [Abstract]
Long-Term Debt, Gross	$ 600.0			600.0
Long-term debt, interest rate	4.20%	4.20%	4.20%
€500 million 1.40% Senior Notes due 2031
Long-Term Debt [Abstract]
Long-Term Debt, Gross	$ 585.3	€ 500.0		520.3
Long-term debt, interest rate	1.40%	1.40%	1.40%
2.60% Senior Notes due 2031
Long-Term Debt [Abstract]
Long-Term Debt, Gross	$ 800.0			800.0
Long-term debt, interest rate	2.60%	2.60%	2.60%
€600 million 3.70% Senior Notes due 2032
Long-Term Debt [Abstract]
Long-Term Debt, Gross	$ 702.3	€ 600.0		624.5
Long-term debt, interest rate	3.70%	3.70%	3.70%
£325 million 2.25% Senior Notes due 2033
Long-Term Debt [Abstract]
Long-Term Debt, Gross	$ 435.8		£ 325.0	407.9
Long-term debt, interest rate	2.25%	2.25%	2.25%
5.30% Senior Notes due 2034
Long-Term Debt [Abstract]
Long-Term Debt, Gross	$ 600.0			$ 600.0
Long-term debt, interest rate	5.30%	5.30%	5.30%