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Debt (Senior Notes) (Details) $ in Millions, ¥ in Billions	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Jul. 31, 2021 JPY (¥) Rate	Jun. 30, 2021 USD ($)
Debt Instrument [Line Items]
Long-term debt	$ 16,188.1	$ 18,015.2
Long-term Debt, Gross	17,614.0
2020 Euro Senior Notes
Debt Instrument [Line Items]
Long-term debt	$ 283.6	305.1
2.250% Euro Senior Notes due 2024
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	2.25%
YEN Term Loan
Debt Instrument [Line Items]
Long-term debt	$ 283.6
Senior Notes \| 2.250% Euro Senior Notes due 2024
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	2.25%
Long-term debt	$ 0.0	1,069.8
Senior Notes \| 2028 Euro Senior Notes
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	3.125%
Long-term debt	$ 824.1	798.5
Senior Notes \| 2028 Senior Notes
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	4.55%
Long-term debt	$ 749.1	748.9
Senior Notes \| 2048 Senior Notes [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	5.20%
Long-term debt	$ 747.8	747.8
Senior Notes \| 2025 Euro Senior Notes
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	2.125%
Long-term debt	$ 551.7	$ 534.8
Revolving Credit Facility \| Twenty Twenty One Revolving Facility
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity				$ 4,000.0
Medium-term Notes \| YEN Term Loan
Debt Instrument [Line Items]
Debt Instrument, Face Amount \| ¥			¥ 40
Medium-term Notes \| Twenty Twenty One Loan Facilities
Debt Instrument [Line Items]
Maximum Leverage Ratio, Period Three \| Rate			375.00%