Debt (Details) € in Millions, £ in Millions, $ in Millions				12 Months Ended
	Nov. 22, 2021 USD ($)	May 28, 2021 USD ($)	May 03, 2021 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2021 EUR (€)	Dec. 31, 2021 GBP (£)	Nov. 22, 2021 GBP (£)
Short-Term Borrowings [Abstract]
Short-term debt				$ 9.6	$ 3.9
Short-term borrowings, weighted average interest rate				1.60%	3.50%		1.60%	1.60%
Long-Term Debt [Abstract]
Long-term debt, carrying amount				$ 5,727.0	$ 5,823.0
Unamortized discount				(10.8)	(5.1)
Unamortized debt issuance costs				(31.8)	(27.0)
Unamortized deferred gain from settlement of interest rate swaps				1.3	16.4
Long-Term Debt				5,685.7	5,807.3
Proceeds from borrowings	$ 429.6		$ 791.7	1,221.3	1,186.6	$ 1,112.4
Loss on extinguishment of debt		$ 26.6
Contractual Maturities of Long-Term Debt [Abstract]
Contractual maturities of long-term debt, 2022				0.0
Contractual maturities of long-term debt, 2023				0.0
Contractual maturities of long-term debt, 2024				750.0
Contractual maturities of long-term debt, 2025				0.0
Contractual maturities of long-term debt, 2026				1,400.0
Contractual maturities of long-term debt, Thereafter				3,577.0
Contractual maturities of long-term debt				5,727.0
Components of Interest Expense [Abstract]
Interest expense, Long-term debt				167.3	178.6	185.7
Interest expense, Early redemption payments and other fees				43.4	14.1	14.1
Interest expense, Pension and other interest				35.3	38.0	53.2
Interest expense, Interest rate swaps				(9.6)	(8.9)	(8.7)
Interest expense, total				236.4	221.8	$ 244.3
Credit Facility [Member]
Credit Facilities [Abstract]
Credit Facilities, maximum borrowing capacity				$ 2,500.0
Credit Facilities, expiration date				Feb. 14, 2025
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. In October 2020, we amended the Credit Facility to increase the maximum Leverage Ratio to 4.0 times through December 31, 2021.
Credit Facilities, covenant compliance				At December 31, 2021, we were in compliance with this covenant as our Leverage Ratio was 2.3 times.
Commercial Paper [Member]
Credit Facilities [Abstract]
Credit Facilities, maximum borrowing capacity				$ 2,000.0
Credit Facilities, amount outstanding				0.0
Uncommitted credit lines [Member]
Credit Facilities [Abstract]
Credit Facilities, maximum borrowing capacity				863.9
Credit Facilities, amount outstanding				0.0
3.625% Senior Notes due 2022
Long-Term Debt [Abstract]
Long-term debt, carrying amount				$ 0.0	1,250.0
Long-term debt, interest rate				3.625%			3.625%	3.625%
3.65% Senior Notes due 2024
Long-Term Debt [Abstract]
Long-term debt, carrying amount				$ 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, carrying amount				$ 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, carrying amount				$ 568.6	611.5		€ 500.0
Long-term debt, interest rate				0.80%			0.80%	0.80%
2.45% Senior Notes due 2030
Long-Term Debt [Abstract]
Long-term debt, carrying amount				$ 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, carrying amount				$ 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, carrying amount				$ 568.6	611.5		€ 500.0
Long-term debt, interest rate				1.40%			1.40%	1.40%
2.60% Senior Notes due August 1, 2031
Long-Term Debt [Abstract]
Long-term debt, carrying amount			$ 800.0	$ 800.0	0.0
Long-term debt, interest rate			2.60%	2.60%			2.60%	2.60%
2.250% Senior Notes due 2033
Long-Term Debt [Abstract]
Long-term debt, carrying amount				$ 439.8	$ 0.0			£ 325.0	£ 325.0
Long-term debt, interest rate				2.25%			2.25%	2.25%	2.25%