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Equity - Common Stock Repurchase Authorization (Details) - USD ($) shares in Millions, $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Feb. 28, 2019 | Feb. 28, 2019 | Mar. 01, 2018
Equity, Class of Treasury Stock [Line Items] |  |  |
Payments to Acquire Treasury Stock |  | $ 2,568 | $ 67
Repurchases Authorized May 2018 by the BOD |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |
Common Stock Repurchase, Authorized Amount | $ 10,000 | $ 10,000 |
Treasury Shares Repurchased (in shares) | 21 | 63 |
Payments to Acquire Treasury Stock | $ 702 | $ 2,510 |

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- Definition The cash outflow to reacquire common stock during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3291-108585 + Details
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