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Debt - Schedule of Long-term Debt (Details) $ in Millions |  | 1 Months Ended | 2 Months Ended | 3 Months Ended |
--- | --- | --- | --- | --- | ---
Dec. 02, 2016 USD ($) | Dec. 01, 2016 USD ($) payment | Oct. 26, 2016 | Dec. 01, 2016 USD ($) payment d | Sep. 01, 2016 USD ($)
Long-term Debt by Current and Noncurrent |  |  |  |  |  |  |  |
Current debt |  |  | $ 1,155 |  |  | $ 1,155 |  | $ 756
Long-term debt |  |  | 8,490 |  |  | 8,490 |  | 9,154
Debt |  |  | 9,645 |  |  | 9,645 |  | 9,910
Reorganization obligation |  |  |  |  |  |  |  |
Long-term Debt by Current and Noncurrent |  |  |  |  |  |  |  |
Current debt |  |  | 156 |  |  | 156 |  | 189
Long-term debt |  |  | 588 |  |  | 588 |  | 680
Debt |  |  | $ 744 |  |  | $ 744 |  | 869
Effective rate (in ten thousandths) | [1] |  | 6.52% |  |  | 6.52% |  |
Capital lease obligations |  |  |  |  |  |  |  |
Long-term Debt by Current and Noncurrent |  |  |  |  |  |  |  |
Current debt | [2] |  | $ 338 |  |  | $ 338 |  | 380
Long-term debt | [2] |  | 925 |  |  | 925 |  | 1,026
Debt | [2] |  | $ 1,263 |  |  | 1,263 |  | $ 1,406
Capital Lease Obligations |  |  |  |  |  |  |  |
Capital lease obligation incurred |  |  |  |  |  | $ 51 |  |
Capital lease obligations | Weighted Average |  |  |  |  |  |  |  |
Long-term Debt by Current and Noncurrent |  |  |  |  |  |  |  |
Effective rate (in ten thousandths) |  |  | 3.40% |  |  | 3.40% |  | 3.30%
Capital Lease Obligations |  |  |  |  |  |  |  |
Weighted average effective interest rate incurred in period (in thousandths) |  |  |  |  |  | 6.50% |  |
Remaining term (in years) |  |  |  |  |  | 12 years |  |
Secured Debt | 1.258% senior notes |  |  |  |  |  |  |  |
Long-term Debt by Current and Noncurrent |  |  |  |  |  |  |  |
Current debt |  |  | $ 87 |  |  | $ 87 |  | $ 87
Long-term debt |  |  | 132 |  |  | 132 |  | 131
Debt |  |  | $ 219 |  |  | $ 219 |  | 218
Stated rate | [1] |  | 1.258% |  |  | 1.258% |  |
Effective rate (in ten thousandths) | [1] |  | 1.97% |  |  | 1.97% |  |
Secured Debt | 2022 senior secured term loan B |  |  |  |  |  |  |  |
Long-term Debt by Current and Noncurrent |  |  |  |  |  |  |  |
Current debt |  |  | $ 5 |  |  | $ 5 |  | 5
Long-term debt |  |  | 729 |  |  | 729 |  | 730
Debt |  |  | $ 734 |  |  | $ 734 |  | 735
Stated rate | [1] |  | 4.36% |  |  | 4.36% |  |
Effective rate (in ten thousandths) | [1] |  | 4.77% |  |  | 4.77% |  |
Secured Debt | 2022 senior secured term loan B | Variable Interest Rate Base Rate Option |  |  |  |  |  |  |  |
2022 Senior Secured Term Loan B Repricing Amendment |  |  |  |  |  |  |  |
Margin on variable rate financing |  |  | 2.75% |  | 5.00% |  |  |
Other Facilities |  |  |  |  |  |  |  |
Margin on variable rate financing (in thousandths) |  |  | 2.75% |  | 5.00% |  |  |
Secured Debt | 2022 senior secured term loan B | LIBOR | Variable Interest Rate LIBOR Rate Option |  |  |  |  |  |  |  |
2022 Senior Secured Term Loan B Repricing Amendment |  |  |  |  |  |  |  |
Margin on variable rate financing |  |  | 3.75% |  | 6.00% |  |  |
Other Facilities |  |  |  |  |  |  |  |
Margin on variable rate financing (in thousandths) |  |  | 3.75% |  | 6.00% |  |  |
Secured Debt | 2023 senior secured notes |  |  |  |  |  |  |  |
Long-term Debt by Current and Noncurrent |  |  |  |  |  |  |  |
Current debt |  |  | $ 0 |  |  | $ 0 |  | 0
Long-term debt |  |  | 1,237 |  |  | 1,237 |  | 1,237
Debt |  |  | $ 1,237 |  |  | $ 1,237 |  | 1,237
Stated rate | [1] |  | 7.50% |  |  | 7.50% |  |
Effective rate (in ten thousandths) | [1] |  | 7.69% |  |  | 7.69% |  |
Secured Debt | Secured Debt 7 |  |  |  |  |  |  |  |
Other Facilities |  |  |  |  |  |  |  |
Debt instrument, original term |  |  |  |  |  | 5 years |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  | $ 800 |  |  | $ 800 |  |
Debt instruments number of periodic payments | payment |  |  | 16 |  |  | 16 |  |
Secured Debt | Secured Debt 7 | Subsequent Event |  |  |  |  |  |  |  |
Other Facilities |  |  |  |  |  |  |  |
Draw on facility agreement |  | $ 450 |  |  |  |  |  |
Secured Debt | Secured Debt 7 | Maximum |  |  |  |  |  |  |  |
Other Facilities |  |  |  |  |  |  |  |
Debt Instrument, covenant, ratio of debt to fair value of equipment |  |  | 0.8 |  |  | 0.8 |  |
Secured Debt | Secured Debt 7 | LIBOR |  |  |  |  |  |  |  |
2022 Senior Secured Term Loan B Repricing Amendment |  |  |  |  |  |  |  |
Margin on variable rate financing |  |  |  |  |  | 2.40% |  |
Other Facilities |  |  |  |  |  |  |  |
Debt Instrument Variable Reference Rate Period 1 |  |  |  |  |  | 3 months |  |
Margin on variable rate financing (in thousandths) |  |  |  |  |  | 2.40% |  |
Corporate bonds | 2022 senior notes |  |  |  |  |  |  |  |
Long-term Debt by Current and Noncurrent |  |  |  |  |  |  |  |
Current debt |  |  | $ 0 |  |  | $ 0 |  | 0
Long-term debt |  |  | 591 |  |  | 591 |  | 590
Debt |  |  | $ 591 |  |  | $ 591 |  | 590
Stated rate | [1] |  | 5.875% |  |  | 5.875% |  |
Effective rate (in ten thousandths) | [1] |  | 6.14% |  |  | 6.14% |  |
Corporate bonds | 2023 senior notes |  |  |  |  |  |  |  |
Long-term Debt by Current and Noncurrent |  |  |  |  |  |  |  |
Current debt |  |  | $ 0 |  |  | $ 0 |  | 0
Long-term debt |  |  | 990 |  |  | 990 |  | 990
Debt |  |  | $ 990 |  |  | $ 990 |  | 990
Stated rate | [1] |  | 5.25% |  |  | 5.25% |  |
Effective rate (in ten thousandths) | [1] |  | 5.43% |  |  | 5.43% |  |
Corporate bonds | 2024 senior notes |  |  |  |  |  |  |  |
Long-term Debt by Current and Noncurrent |  |  |  |  |  |  |  |
Current debt |  |  | $ 0 |  |  | $ 0 |  | 0
Long-term debt |  |  | 546 |  |  | 546 |  | 546
Debt |  |  | $ 546 |  |  | $ 546 |  | 546
Stated rate | [1] |  | 5.25% |  |  | 5.25% |  |
Effective rate (in ten thousandths) | [1] |  | 5.38% |  |  | 5.38% |  |
Corporate bonds | 2025 senior notes |  |  |  |  |  |  |  |
Long-term Debt by Current and Noncurrent |  |  |  |  |  |  |  |
Current debt |  |  | $ 0 |  |  | $ 0 |  | 0
Long-term debt |  |  | 1,139 |  |  | 1,139 |  | 1,139
Debt |  |  | $ 1,139 |  |  | $ 1,139 |  | 1,139
Stated rate | [1] |  | 5.50% |  |  | 5.50% |  |
Effective rate (in ten thousandths) | [1] |  | 5.56% |  |  | 5.56% |  |
Corporate bonds | 2026 senior notes |  |  |  |  |  |  |  |
Long-term Debt by Current and Noncurrent |  |  |  |  |  |  |  |
Current debt |  |  | $ 0 |  |  | $ 0 |  | 0
Long-term debt |  |  | 446 |  |  | 446 |  | 446
Debt |  |  | $ 446 |  |  | $ 446 |  | 446
Stated rate | [1] |  | 5.625% |  |  | 5.625% |  |
Effective rate (in ten thousandths) | [1] |  | 5.73% |  |  | 5.73% |  |
Convertible Debt |  |  |  |  |  |  |  |
Long-term Debt by Current and Noncurrent |  |  |  |  |  |  |  |
Conversion rights, threshold percentage of applicable conversion price (in hundredths) |  |  |  |  |  | 130.00% |  |
Conversion rights, minimum number of trading days (in days) | d |  |  |  |  |  | 20 |  |
Conversion rights, consecutive trading period (in days) |  |  |  |  |  | 30 days |  |
Convertible Senior Notes |  |  |  |  |  |  |  |
Conversion Value in Excess of Principal |  |  |  |  |  | $ 683 |  |
Convertible Debt | 2032C convertible senior notes |  |  |  |  |  |  |  |
Long-term Debt by Current and Noncurrent |  |  |  |  |  |  |  |
Current debt |  |  | $ 0 | [3] |  | 0 | [3] | 0
Long-term debt |  |  | 206 | [3] |  | 206 | [3] | 204
Debt |  |  | $ 206 | [3] |  | $ 206 | [3] | 204
Stated rate | [1] |  | 2.375% |  |  | 2.375% |  |
Effective rate (in ten thousandths) | [1] |  | 5.95% |  |  | 5.95% |  |
Convertible Debt | 2032D convertible senior notes |  |  |  |  |  |  |  |
Long-term Debt by Current and Noncurrent |  |  |  |  |  |  |  |
Current debt |  |  | $ 0 | [3] |  | $ 0 | [3] | 0
Long-term debt |  |  | 155 | [3] |  | 155 | [3] | 154
Debt |  |  | $ 155 | [3] |  | $ 155 | [3] | 154
Stated rate | [1] |  | 3.125% |  |  | 3.125% |  |
Effective rate (in ten thousandths) | [1] |  | 6.33% |  |  | 6.33% |  |
Convertible Debt | 2033E convertible senior notes |  |  |  |  |  |  |  |
Long-term Debt by Current and Noncurrent |  |  |  |  |  |  |  |
Current debt | [3] |  | $ 170 |  |  | $ 170 |  | 0
Long-term debt | [3] |  | 0 |  |  | 0 |  | 168
Debt | [3] |  | $ 170 |  |  | $ 170 |  | 168
Stated rate | [1] |  | 1.625% |  |  | 1.625% |  |
Effective rate (in ten thousandths) | [1] |  | 4.50% |  |  | 4.50% |  |
Convertible Debt | 2033F convertible senior note |  |  |  |  |  |  |  |
Long-term Debt by Current and Noncurrent |  |  |  |  |  |  |  |
Current debt | [3] |  | $ 273 |  |  | $ 273 |  | 0
Long-term debt | [3] |  | 0 |  |  | 0 |  | 271
Debt | [3] |  | $ 273 |  |  | $ 273 |  | 271
Stated rate | [1] |  | 2.125% |  |  | 2.125% |  |
Effective rate (in ten thousandths) | [1] |  | 4.93% |  |  | 4.93% |  |
Convertible Debt | 2043G convertible senior notes |  |  |  |  |  |  |  |
Long-term Debt by Current and Noncurrent |  |  |  |  |  |  |  |
Current debt |  |  | $ 0 |  |  | $ 0 |  | 0
Long-term debt |  |  | 661 |  |  | 661 |  | 657
Debt |  |  | $ 661 |  |  | $ 661 |  | 657
Stated rate | [1] |  | 3.00% |  |  | 3.00% |  |
Effective rate (in ten thousandths) | [1] |  | 6.76% |  |  | 6.76% |  |
Other notes payable |  |  |  |  |  |  |  |
Long-term Debt by Current and Noncurrent |  |  |  |  |  |  |  |
Current debt |  |  | $ 126 |  |  | $ 126 |  | 95
Long-term debt |  |  | 145 |  |  | 145 |  | 185
Debt |  |  | $ 271 |  |  | $ 271 |  | $ 280
Other notes payable | Weighted Average |  |  |  |  |  |  |  |
Long-term Debt by Current and Noncurrent |  |  |  |  |  |  |  |
Stated rate | [1] |  | 2.513% |  |  | 2.513% |  |
Effective rate (in ten thousandths) | [1] |  | 2.65% |  |  | 2.65% |  |
[1] | As of December 1, 2016.
[2] | Weighted-average imputed rate of 3.4% and 3.3% as of December 1, 2016 and September 1, 2016, respectively.
[3] | Since the closing price of our common stock exceeded 130% of the conversion price per share for at least 20 trading days in the 30 trading day period ended on September 30, 2016, these notes were convertible by the holders during the calendar quarter ended December 31, 2016. The closing price of our common stock also exceeded the thresholds for the calendar quarter ended December 31, 2016; therefore, these notes are convertible by the holders through March 31, 2017. The 2033 Notes were classified as current as of December 1, 2016 because the terms of these notes require us to pay cash for the principal amount of any converted notes and holders of these notes had the right to convert their notes as of that date.

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