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Derivatives and Hedging Activities - Narrative (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Derivative [Line Items]
Derivative, notional amount		$ 3,300,000,000
Designated as hedging instruments: | Cross Currency Interest Rate Contract
Derivative [Line Items]
Derivative, notional amount	$ 3,300,000,000
Not designated as hedging instruments | Foreign currency forward contracts
Derivative [Line Items]
Derivative, notional amount	5,900,000,000	3,400,000,000
Net investment hedges | Designated as hedging instruments:
Derivative [Line Items]
Derivative, notional amount	2,200,000,000	1,900,000,000
Net investment hedges | Designated as hedging instruments: | Foreign Exchange Forward
Derivative [Line Items]
Derivative, notional amount	355,600,000	355,600,000
Cash flow hedges | Foreign currency forward and option contracts
Derivative [Line Items]
Derivative, notional amount	989,000,000.0	912,900,000
Net loss to be reclassified within the next 12 months, Foreign Currency Cash Flow Hedge	18,900,000	35,400,000
Cash flow hedges | Interest rate locks
Derivative [Line Items]
Derivative, notional amount	725,000,000.0	0
Net loss to be reclassified within the next 12 months, Interest Rate Cash Flow Hedge	3,600,000	$ 4,100,000
Derivative, notional aggregate amount settled	$ 0

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Derivative, Notional Amount, Amount Settled

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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5579245-113959

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 30
-Section 50
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=121549185&loc=d3e80748-113994

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