Debt (Details) € in Millions, £ in Millions, $ in Millions	6 Months Ended
	Jun. 30, 2023 USD ($)	Jun. 30, 2023 EUR (€)	Jun. 30, 2023 GBP (£)	Dec. 31, 2022 USD ($)
Short-Term Borrowings [Abstract]
Short-term debt	$ 20.5			$ 16.9
Long-Term Debt [Abstract]
Long-Term Debt, Gross	5,646.5			5,611.8
Unamortized discount	(8.5)			(9.0)
Unamortized debt issuance costs	(24.4)			(26.2)
Unamortized deferred gain from settlement of interest rate swaps	0.1			0.6
Long-Term Debt	5,613.7			5,577.2
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 contains 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 June 30, 2023, we were in compliance with this covenant as our Leverage Ratio was 2.4 times.
Uncommitted credit lines [Member]
Credit Facilities [Abstract]
Credit Facilities, maximum borrowing capacity	$ 585.5
Credit Facilities, amount outstanding	0.0
Commercial Paper [Member]
Credit Facilities [Abstract]
Credit Facilities, maximum borrowing capacity	2,000.0
Commercial paper, maximum amount outstanding	200.0
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
3.65% Senior Notes due 2024
Long-Term Debt [Abstract]
Long-Term Debt, Gross	$ 750.0			750.0
Long-term debt, interest rate	3.65%	3.65%	3.65%
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	$ 543.3	€ 500.0		534.9
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	$ 543.3	€ 500.0		534.9
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%
£325 million 2.25% Senior Notes due 2033
Long-Term Debt [Abstract]
Long-Term Debt, Gross	$ 409.9		£ 325.0	$ 392.0
Long-term debt, interest rate	2.25%	2.25%	2.25%