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Hedging Activities - Additional Information (Detail) - Foreign Exchange Contract - Designated as Hedging Instrument - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Derivative [Line Items]
Percentage of effectiveness on net investment hedges	100.00%
Currency remeasurement gains (losses)	$ 51.7	$ 60.5
British-Pound-Denominated Loans
Derivative [Line Items]
Hedge against net investment in foreign subsidiaries	304.6	307.3
Euro Loan
Derivative [Line Items]
Hedge against net investment in foreign subsidiaries	$ 654.1	$ 699.7

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- Definition

Percentage of effectiveness on net investment hedges.

+ References

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- Definition

Amount of hedged item in hedging relationship. Excludes hedged asset or liability.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Amount before tax, after reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 10A
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=124509347&loc=SL7669646-108580

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=124509347&loc=d3e637-108580

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