Income Taxes - Tax Credit Carryforwards (Details 3) (USD $) In Millions, unless otherwise specified	Aug. 28, 2014
Tax Credit Carryforward [Line Items]
Tax credit carryforwards	$ 443
2015 - 2019
Tax Credit Carryforward [Line Items]
Tax credit carryforwards	78
2020 - 2024
Tax Credit Carryforward [Line Items]
Tax credit carryforwards	146
2025 - 2029
Tax Credit Carryforward [Line Items]
Tax credit carryforwards	116
2030 - 2034
Tax Credit Carryforward [Line Items]
Tax credit carryforwards	72
Indefinite
Tax Credit Carryforward [Line Items]
Tax credit carryforwards	31
Federal [Member]
Tax Credit Carryforward [Line Items]
Tax credit carryforwards	250
Federal [Member] | 2015 - 2019
Tax Credit Carryforward [Line Items]
Tax credit carryforwards	9
Federal [Member] | 2020 - 2024
Tax Credit Carryforward [Line Items]
Tax credit carryforwards	91
Federal [Member] | 2025 - 2029
Tax Credit Carryforward [Line Items]
Tax credit carryforwards	78
Federal [Member] | 2030 - 2034
Tax Credit Carryforward [Line Items]
Tax credit carryforwards	72
Federal [Member] | Indefinite
Tax Credit Carryforward [Line Items]
Tax credit carryforwards	0
State [Member]
Tax Credit Carryforward [Line Items]
Tax credit carryforwards	193
State [Member] | 2015 - 2019
Tax Credit Carryforward [Line Items]
Tax credit carryforwards	69
State [Member] | 2020 - 2024
Tax Credit Carryforward [Line Items]
Tax credit carryforwards	55
State [Member] | 2025 - 2029
Tax Credit Carryforward [Line Items]
Tax credit carryforwards	38
State [Member] | 2030 - 2034
Tax Credit Carryforward [Line Items]
Tax credit carryforwards	0
State [Member] | Indefinite
Tax Credit Carryforward [Line Items]
Tax credit carryforwards	$ 31