Investments - Available for Sale and Held to Maturity Investments (Detail) (USD $) In Millions, unless otherwise specified	Feb. 16, 2014	Sep. 01, 2013
Available For Sale And Held To Maturity [Line Items]
Available-For-Sale, Cost Basis	$ 1,337
Available-for-sale, Recorded Basis, Total	1,339
Held-to-maturity, Cost Basis	13
Total investments, Recorded Basis	1,352	1,480
Short-term Investments
Available For Sale And Held To Maturity [Line Items]
Unrealized gains	2	0
Total investments, Cost Basis	1,350	1,480
Total investments, Recorded Basis	1,352	1,480
Short-term Investments | Available-for-sale Securities
Available For Sale And Held To Maturity [Line Items]
Available-For-Sale, Cost Basis	1,337	1,277
Unrealized gains	2	0
Available-for-sale, Recorded Basis, Total	1,339	1,277
Short-term Investments | Available-for-sale Securities | Government and agency securities
Available For Sale And Held To Maturity [Line Items]
Available-For-Sale, Cost Basis	1,332	1,263
Unrealized gains	2	0
Available-for-sale, Recorded Basis, Total	1,334	1,263
Short-term Investments | Available-for-sale Securities | Corporate notes and bonds
Available For Sale And Held To Maturity [Line Items]
Available-For-Sale, Cost Basis		9
Unrealized gains		0
Available-for-sale, Recorded Basis, Total		9
Short-term Investments | Available-for-sale Securities | Asset and mortgage backed securities
Available For Sale And Held To Maturity [Line Items]
Available-For-Sale, Cost Basis	5	5
Unrealized gains	0	0
Available-for-sale, Recorded Basis, Total	5	5
Short-term Investments | Held-to-maturity Securities
Available For Sale And Held To Maturity [Line Items]
Held-to-maturity, Cost Basis		203
Held-to-maturity, Recorded Basis, Total		203
Short-term Investments | Held-to-maturity Securities | Certificates of Deposit [Member]
Available For Sale And Held To Maturity [Line Items]
Held-to-maturity, Cost Basis		124
Held-to-maturity, Recorded Basis, Total		124
Short-term Investments | Held-to-maturity Securities | Banker's Acceptances
Available For Sale And Held To Maturity [Line Items]
Held-to-maturity, Cost Basis	13	79
Held-to-maturity, Recorded Basis, Total	$ 13	$ 79