Debt (Summary of Long-Term Debt) (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Current portion of long-term debt	$ 1,889.7	$ 1,934.7
Unamortized debt issuance expense	(28.4)	(29.5)
Long-term debt	16,072.5	16,188.1
Other Current Portion of Long-term Debt
Debt Instrument [Line Items]
Current portion of long-term debt	0.6	0.4
2020 Euro Senior Notes
Debt Instrument [Line Items]
Long-term debt	264.3	283.6
Other
Debt Instrument [Line Items]
Long-term debt	$ 2.4	2.4
2024 Euro Senior Notes, 1.023%
Debt Instrument [Line Items]
Stated percentage rate	1.023%
2027 Euro Senior Notes
Debt Instrument [Line Items]
Stated percentage rate	1.362%
2027 Senior Notes
Debt Instrument [Line Items]
Stated percentage rate	2.30%
Senior Notes | 2024 Euro Senior Notes
Debt Instrument [Line Items]
Stated percentage rate	2.25%
Long-term debt	$ 1,078.7	1,103.5
Senior Notes | 2.125% Euro Senior Notes due 2025
Debt Instrument [Line Items]
Stated percentage rate	2.125%
Long-term debt	$ 539.3	551.7
Senior Notes | 2026 Senior Notes (3.950% coupon)
Debt Instrument [Line Items]
Stated percentage rate	3.95%
Long-term debt	$ 2,245.6	2,245.1
Senior Notes | 2028 Euro Senior Notes
Debt Instrument [Line Items]
Stated percentage rate	3.125%
Long-term debt	$ 805.7	824.1
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	749.1
Senior Notes | 2043 Senior Notes (5.400% coupon)
Debt Instrument [Line Items]
Stated percentage rate	5.40%
Long-term debt	$ 497.5	497.5
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 | 2024 Euro Senior Notes, 1.023%
Debt Instrument [Line Items]
Long-term debt	$ 810.9	831.5
Senior Notes | 2025 Senior Notes
Debt Instrument [Line Items]
Stated percentage rate	1.65%
Long-term debt	$ 754.8	755.7
Senior Notes | 2027 Euro Senior Notes
Debt Instrument [Line Items]
Long-term debt	943.3	967.2
Senior Notes | 2027 Senior Notes
Debt Instrument [Line Items]
Long-term debt	$ 768.4	769.8
Senior Notes | 2030 Senior Notes
Debt Instrument [Line Items]
Stated percentage rate	2.70%
Long-term debt	$ 1,503.0	1,505.0
Senior Notes | 2032 Euro Senior Notes
Debt Instrument [Line Items]
Stated percentage rate	1.908%
Long-term debt	$ 1,442.4	1,478.4
Senior Notes | 2040 Senior Notes
Debt Instrument [Line Items]
Stated percentage rate	3.85%
Long-term debt	$ 1,642.3	1,644.0
Senior Notes | 2050 Senior Notes
Debt Instrument [Line Items]
Stated percentage rate	4.00%
Long-term debt	$ 2,195.1	2,196.3
Current Portion of Long-Term Debt
Debt Instrument [Line Items]
Unamortized debt issuance expense	$ (0.5)	$ (0.7)