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Fair Value Measurements - Fair Value of Financial Instruments (Details) - USD ($)
$ in Millions
Nov. 30, 2023
Aug. 31, 2023
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Carrying Amount $ 2,876 $ 2,875
Senior Notes | 3.950% Senior Notes    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Stated interest rate 3.95%  
Carrying Amount $ 497 497
Senior Notes | 3.600% Senior Notes    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Stated interest rate 3.60%  
Carrying Amount $ 497 496
Senior Notes | 3.000% Senior Notes    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Stated interest rate 3.00%  
Carrying Amount $ 593 593
Senior Notes | 1.700% Senior Notes    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Stated interest rate 1.70%  
Carrying Amount $ 498 498
Senior Notes | 4.250% Senior Notes    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Stated interest rate 4.25%  
Carrying Amount $ 495 495
Senior Notes | 5.450% Senior Notes    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Stated interest rate 5.45%  
Carrying Amount $ 296 296
Senior Notes | Carrying Amount | Level 2 | 3.950% Senior Notes    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Carrying Amount 497 497
Senior Notes | Carrying Amount | Level 2 | 3.600% Senior Notes    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Carrying Amount 497 496
Senior Notes | Carrying Amount | Level 2 | 3.000% Senior Notes    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Carrying Amount 593 593
Senior Notes | Carrying Amount | Level 2 | 1.700% Senior Notes    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Carrying Amount 498 498
Senior Notes | Carrying Amount | Level 2 | 4.250% Senior Notes    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Carrying Amount 495 495
Senior Notes | Carrying Amount | Level 2 | 5.450% Senior Notes    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Carrying Amount 296 296
Senior Notes | Fair Value | Level 2 | 3.950% Senior Notes    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Fair Value 469 468
Senior Notes | Fair Value | Level 2 | 3.600% Senior Notes    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Fair Value 444 448
Senior Notes | Fair Value | Level 2 | 3.000% Senior Notes    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Fair Value 505 502
Senior Notes | Fair Value | Level 2 | 1.700% Senior Notes    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Fair Value 459 452
Senior Notes | Fair Value | Level 2 | 4.250% Senior Notes    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Fair Value 481 478
Senior Notes | Fair Value | Level 2 | 5.450% Senior Notes    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Fair Value $ 298 $ 297