Financial Instruments and Hedging Activities (Derivatives Pretax Amounts Affecting Income and Other Comprehensive Income) (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2024	Mar. 31, 2023
Derivatives in Cash Flow Hedging Relationships
Cash flow hedges
Gain (loss) recognized in AOCI	$ 47.0	$ (11.0)
Gain (loss) reclassified into income from AOCI	(2.0)	10.0
Net Investment Hedging Relationships
Net investment hedges
Gain (loss) recognized in AOCI	386.0	(155.0)
Gain (loss) reclassified into income from AOCI		0.0
Derivative instruments, gain (loss) recognized in income, net	7.0	6.0
Derivatives Not Designated as Hedging Instruments
Net investment hedges
Derivative instruments, gain (loss) recognized in income, net	(8.0)	18.0
Foreign Exchange [Member] \| Derivatives in Cash Flow Hedging Relationships
Cash flow hedges
Gain (loss) recognized in AOCI	43.0	(9.0)
Gain (loss) reclassified into income from AOCI	(2.0)	10.0
Foreign Exchange [Member] \| Derivatives Not Designated as Hedging Instruments
Net investment hedges
Derivative instruments, gain (loss) recognized in income, net	1.0	2.0
Interest Rate Contract [Member] \| Derivatives in Cash Flow Hedging Relationships
Cash flow hedges
Gain (loss) recognized in AOCI	4.0	(2.0)
Gain (loss) reclassified into income from AOCI	0.0	0.0
Other Foreign Currency Denominated Debt [Member] \| Net Investment Hedging Relationships
Net investment hedges
Gain (loss) recognized in AOCI	349.0	(163.0)
Gain (loss) reclassified into income from AOCI
Foreign Exchange Forward [Member] \| Net Investment Hedging Relationships
Net investment hedges
Gain (loss) recognized in AOCI	37.0	8.0
Cross Currency Interest Rate Contract [Member] \| Net Investment Hedging Relationships
Net investment hedges
Derivative instruments, gain (loss) recognized in income, net	7.0	6.0
Equity [Member] \| Derivatives Not Designated as Hedging Instruments
Net investment hedges
Derivative instruments, gain (loss) recognized in income, net	$ (9.0)	$ 16.0

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
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Amount, before tax, of reclassification from accumulated other comprehensive income (AOCI) for gain (loss) from derivative designated and qualifying as net investment hedge.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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