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Derivatives and Hedging Activities - Narrative (Detail) - USD ($) | 9 Months Ended |
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Sep. 30, 2021 | Dec. 31, 2020
Designated as hedging instruments: | Cross Currency Interest Rate Contract |  |
Derivative [Line Items] |  |
Derivative, notional amount | $ 4,000,000,000 | $ 3,300,000,000
Not designated as hedging instruments | Foreign currency forward contracts |  |
Derivative [Line Items] |  |
Derivative, notional amount | 3,400,000,000 | 3,400,000,000
Net investment hedges | Designated as hedging instruments: |  |
Derivative [Line Items] |  |
Derivative, notional amount | 1,500,000,000 | 1,900,000,000
Net investment hedges | Designated as hedging instruments: | Foreign Exchange Forward |  |
Derivative [Line Items] |  |
Derivative, notional amount | 375,700,000 | 355,600,000
Cash flow hedges | Foreign currency forward and option contracts |  |
Derivative [Line Items] |  |
Derivative, notional amount | 898,500,000 | 912,900,000
Net gain (loss) to be reclassified within the next 12 months, Foreign Currency Cash Flow Hedge | 1,600,000 | (35,400,000)
Cash flow hedges | Interest rate locks |  |
Derivative [Line Items] |  |
Derivative, notional amount | 350,000,000 | 0
Derivative, notional aggregate amount settled | 1,300,000,000 |
Net loss to be reclassified within the next 12 months, Interest Rate Cash Flow Hedge | $ 4,200,000 | $ 4,100,000

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- Definition Nominal or face amount used to calculate payment on derivative. + 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=125515794&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=125515794&loc=SL5579245-113959 + Details
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