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Income Taxes - Tax Credit Carryforwards (Details 7)
$ in Millions
Aug. 30, 2018
USD ($)
Tax Credit Carryforward [Line Items]  
Tax credit carryforwards $ 774
2019 - 2023  
Tax Credit Carryforward [Line Items]  
Tax credit carryforwards 185
2024 - 2028  
Tax Credit Carryforward [Line Items]  
Tax credit carryforwards 90
2029 - 2033  
Tax Credit Carryforward [Line Items]  
Tax credit carryforwards 159
2034 - 2038  
Tax Credit Carryforward [Line Items]  
Tax credit carryforwards 278
Indefinite  
Tax Credit Carryforward [Line Items]  
Tax credit carryforwards 62
U.S. Federal  
Tax Credit Carryforward [Line Items]  
Tax credit carryforwards 510
U.S. Federal | 2019 - 2023  
Tax Credit Carryforward [Line Items]  
Tax credit carryforwards 122
U.S. Federal | 2024 - 2028  
Tax Credit Carryforward [Line Items]  
Tax credit carryforwards 44
U.S. Federal | 2029 - 2033  
Tax Credit Carryforward [Line Items]  
Tax credit carryforwards 69
U.S. Federal | 2034 - 2038  
Tax Credit Carryforward [Line Items]  
Tax credit carryforwards 275
U.S. Federal | Indefinite  
Tax Credit Carryforward [Line Items]  
Tax credit carryforwards 0
State  
Tax Credit Carryforward [Line Items]  
Tax credit carryforwards 264
State | 2019 - 2023  
Tax Credit Carryforward [Line Items]  
Tax credit carryforwards 63
State | 2024 - 2028  
Tax Credit Carryforward [Line Items]  
Tax credit carryforwards 46
State | 2029 - 2033  
Tax Credit Carryforward [Line Items]  
Tax credit carryforwards 90
State | 2034 - 2038  
Tax Credit Carryforward [Line Items]  
Tax credit carryforwards 3
State | Indefinite  
Tax Credit Carryforward [Line Items]  
Tax credit carryforwards $ 62