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Derivative Financial Instruments - Effect on Statement of Comprehensive Income and Statement of Income (Details) - Designated as Hedging Instrument - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Derivative [Line Items]
Gain (Loss) Recorded in Other Comprehensive Income (loss)	$ 0.9	$ 14.5
Gain (Loss) Reclassified from Accumulated Other Comprehensive Loss into Earnings	0.6	0.6
Gain (Loss) Recorded in Earnings from Excluded Components	0.0	2.8
Net Investment Hedging | Forward foreign currency contracts
Derivative [Line Items]
Gain (Loss) Recorded in Other Comprehensive Income (loss)	(1.0)	65.4
Gain (Loss) Reclassified from Accumulated Other Comprehensive Loss into Earnings	1.0	0.6
Gain (Loss) Recorded in Earnings from Excluded Components	0.0	2.8
Net Investment Hedging | Put options
Derivative [Line Items]
Gain (Loss) Recorded in Other Comprehensive Income (loss)	0.0	(47.7)
Gain (Loss) Reclassified from Accumulated Other Comprehensive Loss into Earnings	0.0	0.0
Gain (Loss) Recorded in Earnings from Excluded Components	0.0	0.0
Net Investment Hedging | Call options
Derivative [Line Items]
Gain (Loss) Recorded in Other Comprehensive Income (loss)	0.0	(1.3)
Gain (Loss) Reclassified from Accumulated Other Comprehensive Loss into Earnings	0.0	0.0
Gain (Loss) Recorded in Earnings from Excluded Components	0.0	0.0
Cash Flow Hedging | Interest rate swap
Derivative [Line Items]
Gain (Loss) Recorded in Other Comprehensive Income (loss)	1.9	(1.9)
Gain (Loss) Reclassified from Accumulated Other Comprehensive Loss into Earnings	(0.4)	0.0
Gain (Loss) Recorded in Earnings from Excluded Components	$ 0.0	$ 0.0

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Other Comprehensive Income (Loss), Net Investment And Cash Flow Hedge, Gain (Loss), Before Reclassification And Tax

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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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 20
-Section 45
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Amount, before tax and after adjustments, of gain (loss) from increase (decrease) in value of excluded component of derivative designated and qualifying as hedge. Adjustments include, but are not limited to, reclassifications for sale and settlement, and amounts recognized under systematic and rational method.

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