Financial Instruments and Hedging Activities (Derivatives Pretax Amounts Affecting Income and Other Comprehensive Income) (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022
Derivatives in Cash Flow Hedging Relationships
Cash flow hedges
Gain (loss) recognized in AOCI	$ (10.7)	$ 35.3
Gain (loss) reclassified into income from AOCI	10.4	13.0
Net Investment Hedging Relationships
Net investment hedges
Gain (loss) recognized in AOCI	(155.3)	263.4
Gain (loss) reclassified into income from AOCI		0.0
Derivative instruments, gain (loss) recognized in income, net	5.7	2.3
Derivatives Not Designated as Hedging Instruments
Net investment hedges
Derivative instruments, gain (loss) recognized in income, net	17.7	(26.0)
Foreign Exchange [Member] \| Derivatives in Cash Flow Hedging Relationships
Cash flow hedges
Gain (loss) recognized in AOCI	(9.2)	13.5
Gain (loss) reclassified into income from AOCI	10.3	14.1
Foreign Exchange [Member] \| Derivatives Not Designated as Hedging Instruments
Net investment hedges
Derivative instruments, gain (loss) recognized in income, net	2.1	(4.5)
Interest Rate Contract [Member] \| Derivatives in Cash Flow Hedging Relationships
Cash flow hedges
Gain (loss) recognized in AOCI	(1.5)	21.8
Gain (loss) reclassified into income from AOCI	0.1	(1.1)
Other Foreign Currency Denominated Debt [Member] \| Net Investment Hedging Relationships
Net investment hedges
Gain (loss) recognized in AOCI	(162.9)	259.0
Gain (loss) reclassified into income from AOCI		0.0
Foreign Exchange Forward [Member] \| Net Investment Hedging Relationships
Net investment hedges
Gain (loss) recognized in AOCI	7.6	4.4
Cross Currency Interest Rate Contract [Member] \| Net Investment Hedging Relationships
Net investment hedges
Derivative instruments, gain (loss) recognized in income, net	5.7	2.3
Equity [Member] \| Derivatives Not Designated as Hedging Instruments
Net investment hedges
Derivative instruments, gain (loss) recognized in income, net	$ 15.6	$ (21.5)

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

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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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