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Debt - Debt Repurchases and Conversions (Details) - USD ($) shares in Millions, $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 01, 2018 | Mar. 02, 2017 | Mar. 01, 2018 | Mar. 02, 2017
Extinguishment of Debt [Line Items] |  |  |  |  |
Decrease in Principal |  |  |  | $ (2,420) |
Decrease in Cash |  |  |  | (3,379) | $ (556)
Gain (Loss) on debt repurchases and conversions |  | $ (23) | $ 0 | (218) | $ (2)
Corporate bonds | 2023 Notes |  |  |  |  |
Extinguishment of Debt [Line Items] |  |  |  |  |
Decrease in Principal |  |  |  | (1,000) |
Increase (Decrease) in Carrying Value |  |  |  | (991) |
Decrease in Cash |  |  |  | (1,046) |
Gain (Loss) on debt repurchases and conversions |  |  |  | (55) |
Secured Debt | 2023 Secured Notes |  |  |  |  |
Extinguishment of Debt [Line Items] |  |  |  |  |
Decrease in Principal |  |  |  | (1,250) |
Increase (Decrease) in Carrying Value |  |  |  | (1,238) |
Decrease in Cash |  |  |  | (1,373) |
Gain (Loss) on debt repurchases and conversions |  |  |  | $ (135) |
Convertible Debt |  |  |  |  |
Extinguishment of Debt [Line Items] |  |  |  |  |
Derivative, Term of Contract (in consecutive trading days) |  |  |  | 20 days |
Convertible Debt | 2032C Notes | Settled Conversions |  |  |  |  |
Extinguishment of Debt [Line Items] |  |  |  |  |
Decrease in Principal |  |  |  | $ (52) |
Increase (Decrease) in Carrying Value |  |  |  | (49) |
Decrease in Cash |  |  |  | (240) |
Decrease in Equity |  |  |  | (195) |
Gain (Loss) on debt repurchases and conversions |  |  |  | $ 4 |
Convertible Debt | 2033E Notes |  |  |  |  |
Extinguishment of Debt [Line Items] |  |  |  |  |
Treasury shares issued for conversion of 2033E Notes |  |  |  | 4 |
Convertible Debt | 2033E Notes | Settled Conversions |  |  |  |  |
Extinguishment of Debt [Line Items] |  |  |  |  |
Decrease in Principal | [1] |  |  | $ (113) |
Increase (Decrease) in Carrying Value | [1] |  |  | (143) |
Decrease in Cash | [1] |  |  | (249) |
Decrease in Equity | [1] |  |  | (97) |
Gain (Loss) on debt repurchases and conversions | [1] |  |  | (9) |
Convertible Debt | 2033E Notes | Conversions not settled |  |  |  |  |
Extinguishment of Debt [Line Items] |  |  |  |  |
Decrease in Principal | [2] |  |  | 0 |
Increase (Decrease) in Carrying Value | [2] |  |  | 137 |
Decrease in Cash | [2] |  |  | 0 |
Decrease in Equity | [2] |  |  | (124) |
Gain (Loss) on debt repurchases and conversions | [2] |  |  | (13) |
Principle amount of settlement obligations to be settled in cash in Q3-18 |  |  |  | 41 |
Convertible Debt | 2033F Notes | Settled Conversions |  |  |  |  |
Extinguishment of Debt [Line Items] |  |  |  |  |
Decrease in Principal |  |  |  | (5) |
Increase (Decrease) in Carrying Value |  |  |  | (5) |
Decrease in Cash |  |  |  | (22) |
Decrease in Equity |  |  |  | (17) |
Gain (Loss) on debt repurchases and conversions |  |  |  | 0 |
Convertible Debt | 2033F Notes | Conversions not settled |  |  |  |  |
Extinguishment of Debt [Line Items] |  |  |  |  |
Decrease in Principal | [2] |  |  | 0 |
Increase (Decrease) in Carrying Value | [2] |  |  | 101 |
Decrease in Cash | [2] |  |  | 0 |
Decrease in Equity | [2] |  |  | (91) |
Gain (Loss) on debt repurchases and conversions | [2] |  |  | (10) |
Principle amount of settlement obligations to be settled in cash in Q3-18 |  |  |  | 30 |
Unscheduled Settlement Activities |  |  |  |  |
Extinguishment of Debt [Line Items] |  |  |  |  |
Decrease in Principal |  |  |  | (2,420) |
Increase (Decrease) in Carrying Value |  |  |  | (2,188) |
Decrease in Cash |  |  |  | (2,930) |
Decrease in Equity |  |  |  | $ (524) |
[1] | Settlement included 4 million shares of our treasury stock in addition to cash.
[2] | As of March 1, 2018, $41 million in principal amount of the 2033E Notes and $30 million in principal amount of the 2033F Notes had converted but not settled. These notes will settle in cash in the third quarter of 2018.

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