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Investments - Available for Sale and Held to Maturity Investments (Details) - USD ($) $ in Millions | Sep. 02, 2018 | Sep. 03, 2017
--- | --- | ---
Available For Sale And Held To Maturity [Line Items] |  |
Available-for-sale, recorded basis | $ 898 |
Available-for-sale, cost basis, total | 912 |
Held-to-maturity, cost basis | 306 |
Total investments, recorded basis | 1,204 | $ 1,233
Short-term Investments |  |
Available For Sale And Held To Maturity [Line Items] |  |
Unrealized Gaines(Losses) | (14) | 0
Total investments, recorded basis | 1,204 | 1,233
Total investments, cost basis | 1,218 | 1,233
Short-term Investments | Government and agency securities |  |
Available For Sale And Held To Maturity [Line Items] |  |
Available-for-sale, recorded basis | 898 | 947
Available-for-sale Securities [Member] | Short-term Investments |  |
Available For Sale And Held To Maturity [Line Items] |  |
Available-for-sale, recorded basis | 898 | 948
Unrealized Gaines(Losses) | (14) | 0
Available-for-sale, cost basis, total | 912 | 948
Available-for-sale Securities [Member] | Short-term Investments | Government and agency securities |  |
Available For Sale And Held To Maturity [Line Items] |  |
Available-for-sale, recorded basis | 898 | 947
Unrealized Gaines(Losses) | (14) | 0
Available-for-sale, cost basis, total | 912 | 947
Available-for-sale Securities [Member] | Short-term Investments | Mortgage-backed securities |  |
Available For Sale And Held To Maturity [Line Items] |  |
Available-for-sale, recorded basis |  | 1
Unrealized Gaines(Losses) |  | 0
Available-for-sale, cost basis, total |  | 1
Held-to-maturity Securities [Member] | Short-term Investments |  |
Available For Sale And Held To Maturity [Line Items] |  |
Held-to-maturity, recorded basis | 306 | 285
Held-to-maturity, cost basis | 306 | 285
Held-to-maturity Securities [Member] | Short-term Investments | Certificates of Deposit [Member] |  |
Available For Sale And Held To Maturity [Line Items] |  |
Held-to-maturity, recorded basis | 306 | 285
Held-to-maturity, cost basis | $ 306 | $ 285

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- Definition Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27161-111563 + Details
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