Derivative Financial Instruments and Hedging Activities (Details Textual) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Jul. 31, 2021	Jan. 31, 2022	Apr. 30, 2021
Derivative Financial Instruments (Textual) [Abstract]
Maximum term of outstanding derivative contracts	36 months	36 months
Foreign Currency Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months		$ 15
Aggregate fair value of derivatives with creditworthiness requirements that were in a net liability position		2	$ 30
Designated as Hedging Instrument [Member] \| Net Investment Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Debt Instrument, Face Amount		676	680
Foreign Exchange Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount		$ 860	$ 1,218

Derivative Financial Instruments (Textual) [Abstract].

No definition available.

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

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- Definition

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.

+ References

No definition available.

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- Definition

The aggregate fair value amounts of derivative instruments that contain credit-risk-related contingent features that are in a net liability position at the end of the reporting period. For nonderivative instruments that are designated and qualify as hedging instruments, the fair value amounts are the carrying value of the nonderivative hedging instrument, including the adjustment for the foreign currency transaction gain (loss) on that instrument.

+ References

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- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

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+ Details

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- Definition

The estimated net amount of unrealized gains or losses on foreign currency cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

+ References

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- Definition

Maximum amount of time remaining before foreign currency exchange rate derivatives mature or expire, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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