Financial Instruments - Schedule of Effect of Risk Management (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Cash flow hedges:
Total	$ (27.6)	$ 228.9	$ 98.1	$ 182.8
Hedged Fixed Rate Debt
Cash flow hedges:
Effective portion of risk-management instruments that was recognized in other comprehensive income (loss)	(250.2)	183.5	(76.3)	62.3
Cross-currency interest rate swaps
Cash flow hedges:
Effective portion of risk-management instruments that was recognized in other comprehensive income (loss)	(26.0)	28.6	(6.8)	9.0
Effective portion of risk-management instruments that was recognized in other comprehensive income (loss)	(7.9)	16.4	7.7	30.5
Foreign Exchange Contract
Cash flow hedges:
Effective portion of risk-management instruments that was recognized in other comprehensive income (loss)	(304.1)	217.7	(172.3)	199.3
Forward-starting interest rate swaps
Cash flow hedges:
Effective portion of risk-management instruments that was recognized in other comprehensive income (loss)	(23.6)	84.3	53.8	141.4
Designated as Hedging Instrument \| Hedged Fixed Rate Debt
Fair value hedges:
Effect from hedged fixed-rate debt	48.0	(29.9)	29.0	(29.0)
Designated as Hedging Instrument \| Interest Rate Contracts
Fair value hedges:
Effect from interest rate contracts	(48.0)	29.9	(29.0)	29.0
Cash flow hedges:
Effective portion of losses on interest rate contracts reclassified from accumulated other comprehensive loss	1.4	3.2	5.8	10.3
Designated as Hedging Instrument \| Cross-currency interest rate swaps
Cash flow hedges:
Effective portion of losses on interest rate contracts reclassified from accumulated other comprehensive loss	(28.8)	24.7	58.5	(5.3)
Not Designated as Hedging Instrument \| Foreign Exchange Contract
Cash flow hedges:
Net (gains) losses on foreign currency exchange contracts not designated as hedging instruments	$ (0.2)	$ 201.0	$ 33.8	$ 177.8

Cash Flow Hedge [Abstract]

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Derivative Instruments, Gain (Loss) Recognized

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Fair Value Hedge [Abstract]

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Amount of gain (loss) from the increase (decrease) in fair value of derivative and nonderivative instruments designated as fair value hedging instruments recognized in the income statement.

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Amount of the increase (decrease) in fair value of the hedged item in a fair value hedge recognized in the income statement.

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Amount of gain (loss) recognized in earnings in the period from the increase (decrease) in fair value of foreign currency derivatives not designated as hedging instruments.

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Amount, before tax and reclassification, of gain (loss) from derivative instrument designated and qualifying cash flow hedge included in assessment of hedge effectiveness.

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Amount, before tax, of reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

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Amount, before tax and reclassification, of gain (loss) from derivative designated and qualifying as net investment hedge.

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