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Fair Value Measurements - Schedule of Carrying Amounts and Fair Values of Notes Payable and Long-term Debt (Details) - USD ($) $ in Millions	Aug. 31, 2025	Aug. 31, 2024	Apr. 30, 2023	Apr. 30, 2022
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying Amount	$ 2,885	$ 2,880
3.950% Senior Notes \| Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Stated interest rate (as a percent)	3.95%
Carrying Amount	$ 499	498
3.950% Senior Notes \| Senior Notes \| Level 2 \| Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying Amount	499	498
3.950% Senior Notes \| Senior Notes \| Level 2 \| Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	$ 496	487
3.600% Senior Notes \| Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Stated interest rate (as a percent)	3.60%
Carrying Amount	$ 498	497
3.600% Senior Notes \| Senior Notes \| Level 2 \| Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying Amount	498	497
3.600% Senior Notes \| Senior Notes \| Level 2 \| Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	$ 480	468
3.000% Senior Notes \| Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Stated interest rate (as a percent)	3.00%
Carrying Amount	$ 595	594
3.000% Senior Notes \| Senior Notes \| Level 2 \| Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying Amount	595	594
3.000% Senior Notes \| Senior Notes \| Level 2 \| Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	$ 551	529
1.700% Senior Notes \| Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Stated interest rate (as a percent)	1.70%
Carrying Amount	$ 499	499
1.700% Senior Notes \| Senior Notes \| Level 2 \| Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying Amount	499	499
1.700% Senior Notes \| Senior Notes \| Level 2 \| Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	$ 492	476
4.250% Senior Notes \| Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Stated interest rate (as a percent)	4.25%			4.25%
Carrying Amount	$ 497	496
4.250% Senior Notes \| Senior Notes \| Level 2 \| Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying Amount	497	496
4.250% Senior Notes \| Senior Notes \| Level 2 \| Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	$ 500	495
5.450% Senior Notes \| Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Stated interest rate (as a percent)	5.45%		5.45%
Carrying Amount	$ 297	296
5.450% Senior Notes \| Senior Notes \| Level 2 \| Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying Amount	297	296
5.450% Senior Notes \| Senior Notes \| Level 2 \| Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	$ 308	$ 306