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

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Contractual interest rate for funds borrowed, under the debt agreement.

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Date when the debt instrument is scheduled to be fully repaid, in YYYY-MM-DD format.

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Amount, excluding unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Debt (Details) € in Millions, £ in Millions, $ in Millions	6 Months Ended
Debt (Details) € in Millions, £ in Millions, $ in Millions	Oct. 31, 2022 USD ($)	Oct. 31, 2022 EUR (€)	Oct. 31, 2022 GBP (£)	Apr. 30, 2022 USD ($)	Apr. 30, 2022 EUR (€)	Apr. 30, 2022 GBP (£)
Debt Instrument [Line Items]
Long-term debt, including current portion	$ 2,224			$ 2,269
Current portion of long-term debt	250			250
Long-term debt	1,974			2,019
2.25% notes, due January 15, 2023 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 250			$ 250
Debt Instrument, Maturity Date	Jan. 15, 2023
Debt Instrument, Interest Rate, Stated Percentage	2.25%	2.25%	2.25%	2.25%	2.25%	2.25%
Long-term debt, including current portion	$ 250			$ 250
3.50% senior notes, due April 15, 2025 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 300			$ 300
Debt Instrument, Maturity Date	Apr. 15, 2025
Debt Instrument, Interest Rate, Stated Percentage	3.50%	3.50%	3.50%	3.50%	3.50%	3.50%
Long-term debt, including current portion	$ 298			$ 298
1.20% notes, due July 7, 2026 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount \| €		€ 300			€ 300
Debt Instrument, Maturity Date	Jul. 07, 2026
Debt Instrument, Interest Rate, Stated Percentage	1.20%	1.20%	1.20%	1.20%	1.20%	1.20%
Long-term debt, including current portion	$ 298			$ 315
2.60% notes, due July 7, 2028 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount \| £			£ 300			£ 300
Debt Instrument, Maturity Date	Jul. 07, 2028
Debt Instrument, Interest Rate, Stated Percentage	2.60%	2.60%	2.60%	2.60%	2.60%	2.60%
Long-term debt, including current portion	$ 346			$ 374
4.00% senior notes, due April 15, 2038 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 300			$ 300
Debt Instrument, Maturity Date	Apr. 15, 2038
Debt Instrument, Interest Rate, Stated Percentage	4.00%	4.00%	4.00%	4.00%	4.00%	4.00%
Long-term debt, including current portion	$ 295			$ 295
3.75% notes, due January 15, 2043 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 250			$ 250
Debt Instrument, Maturity Date	Jan. 15, 2043
Debt Instrument, Interest Rate, Stated Percentage	3.75%	3.75%	3.75%	3.75%	3.75%	3.75%
Long-term debt, including current portion	$ 248			$ 248
4.50% notes, due July 15, 2045 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 500			$ 500
Debt Instrument, Maturity Date	Jul. 15, 2045
Debt Instrument, Interest Rate, Stated Percentage	4.50%	4.50%	4.50%	4.50%	4.50%	4.50%
Long-term debt, including current portion	$ 489			$ 489