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Income Taxes - Tax Credit Carryforwards (Details)
$ in Millions
Aug. 31, 2023
USD ($)
Tax Credit Carryforward [Line Items]  
Tax credit carryforwards $ 750
2024 - 2028  
Tax Credit Carryforward [Line Items]  
Tax credit carryforwards 51
2029 - 2033  
Tax Credit Carryforward [Line Items]  
Tax credit carryforwards 120
2034 - 2038  
Tax Credit Carryforward [Line Items]  
Tax credit carryforwards 137
2039 - 2043  
Tax Credit Carryforward [Line Items]  
Tax credit carryforwards 311
Indefinite  
Tax Credit Carryforward [Line Items]  
Tax credit carryforwards 131
U.S. Federal  
Tax Credit Carryforward [Line Items]  
Tax credit carryforwards 306
U.S. Federal | 2024 - 2028  
Tax Credit Carryforward [Line Items]  
Tax credit carryforwards 0
U.S. Federal | 2029 - 2033  
Tax Credit Carryforward [Line Items]  
Tax credit carryforwards 0
U.S. Federal | 2034 - 2038  
Tax Credit Carryforward [Line Items]  
Tax credit carryforwards 0
U.S. Federal | 2039 - 2043  
Tax Credit Carryforward [Line Items]  
Tax credit carryforwards 306
U.S. Federal | Indefinite  
Tax Credit Carryforward [Line Items]  
Tax credit carryforwards 0
State  
Tax Credit Carryforward [Line Items]  
Tax credit carryforwards 444
State | 2024 - 2028  
Tax Credit Carryforward [Line Items]  
Tax credit carryforwards 51
State | 2029 - 2033  
Tax Credit Carryforward [Line Items]  
Tax credit carryforwards 120
State | 2034 - 2038  
Tax Credit Carryforward [Line Items]  
Tax credit carryforwards 137
State | 2039 - 2043  
Tax Credit Carryforward [Line Items]  
Tax credit carryforwards 5
State | Indefinite  
Tax Credit Carryforward [Line Items]  
Tax credit carryforwards $ 131