Debt (Summary of Long-Term Debt) (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Current portion of long-term debt	$ 1,298.7	$ 1,250.5
Unamortized debt issuance expense	(31.4)	(35.1)
Long-term debt	17,076.9	18,015.2
Proceeds from sale of terminated interest rate swaps	45.0
Other Current Portion of Long-term Debt
Debt Instrument [Line Items]
Current portion of long-term debt	$ 0.7	0.7
2020 Euro Senior Notes
Debt Instrument [Line Items]
Long-term debt		305.1
2023 Senior Notes (3.125% coupon)
Debt Instrument [Line Items]
Stated percentage rate	3.125%
Current portion of long-term debt	$ 0.0	750.6
2023 Senior Notes (4.200% coupon)
Debt Instrument [Line Items]
Stated percentage rate	4.20%
Current portion of long-term debt	$ 500.0	499.8
Other
Debt Instrument [Line Items]
Long-term debt	$ 2.5	2.0
1.023% Euro Senior Notes due 2024
Debt Instrument [Line Items]
Stated percentage rate	1.023%
1.362% Euro Senior Notes due 2027
Debt Instrument [Line Items]
Stated percentage rate	1.362%
2027 Senior Notes
Debt Instrument [Line Items]
Stated percentage rate	2.30%
Senior Notes | 2.250% Euro Senior Notes due 2024
Debt Instrument [Line Items]
Stated percentage rate	2.25%
Long-term debt	$ 1,056.9	1,069.8
Senior Notes | 2.125% Euro Senior Notes due 2025
Debt Instrument [Line Items]
Stated percentage rate	2.125%
Long-term debt	$ 528.3	534.8
Senior Notes | 2026 Senior Notes (3.950% coupon)
Debt Instrument [Line Items]
Stated percentage rate	3.95%
Long-term debt	$ 2,244.6	2,243.2
Senior Notes | 3.125% Euro Senior Notes due 2028
Debt Instrument [Line Items]
Stated percentage rate	3.125%
Long-term debt	$ 789.2	798.5
Senior Notes | SeniorNotesTwoThousandTwentyEight [Member]
Debt Instrument [Line Items]
Stated percentage rate	4.55%
Senior Notes | 2028 Senior Notes [Member]
Debt Instrument [Line Items]
Long-term debt	$ 749.1	748.9
Senior Notes | 2043 Senior Notes (5.400% coupon)
Debt Instrument [Line Items]
Stated percentage rate	5.40%
Long-term debt	$ 497.4	497.4
Senior Notes | 2046 Senior Notes (5.250% coupon)
Debt Instrument [Line Items]
Stated percentage rate	5.25%
Long-term debt	$ 999.9	999.9
Senior Notes | 2048 Senior Notes (5.200%)
Debt Instrument [Line Items]
Stated percentage rate	5.20%
Senior Notes | 2048 Senior Notes [Member]
Debt Instrument [Line Items]
Long-term debt	$ 747.8	747.8
Senior Notes | 1.023% Euro Senior Notes due 2024
Debt Instrument [Line Items]
Current portion of long-term debt	798.1	0.0
Long-term debt	$ 0.0	813.5
Senior Notes | 2025 Senior Notes
Debt Instrument [Line Items]
Stated percentage rate	1.65%
Long-term debt	$ 756.7	759.6
Senior Notes | 1.362% Euro Senior Notes due 2027
Debt Instrument [Line Items]
Long-term debt	928.3	945.9
Senior Notes | 2027 Senior Notes
Debt Instrument [Line Items]
Long-term debt	$ 771.2	775.3
Senior Notes | 2030 Senior Notes
Debt Instrument [Line Items]
Stated percentage rate	2.70%
Long-term debt	$ 1,506.9	1,512.8
Senior Notes | 1.908% Euro Senior Notes due 2032
Debt Instrument [Line Items]
Stated percentage rate	1.908%
Long-term debt	$ 1,418.7	1,444.4
Senior Notes | 2040 Senior Notes
Debt Instrument [Line Items]
Stated percentage rate	3.85%
Long-term debt	$ 1,645.6	1,650.6
Senior Notes | 2050 Senior Notes
Debt Instrument [Line Items]
Stated percentage rate	4.00%
Long-term debt	$ 2,197.4	2,200.8
Current Portion of Long-Term Debt
Debt Instrument [Line Items]
Unamortized debt issuance expense	$ (0.1)	$ (0.6)