v3.3.1.900
Debt - Schedule of Long-term Debt (Details)
$ / shares in Units, shares in Millions, $ in Millions
 1 Months Ended 3 Months Ended 6 Months Ended
Dec. 01, 2015
USD ($)
Apr. 08, 2016
USD ($)
Mar. 03, 2016
USD ($)
$ / shares
Mar. 03, 2016
USD ($)
integer
shares
$ / shares
Sep. 03, 2015
USD ($)
Long-term Debt, by Current and Noncurrent [Abstract]          
Current debt     $ 1,125 $ 1,125 $ 1,089
Long-term debt     6,494 6,494 6,252
Debt     $ 7,619 $ 7,619 7,341
Convertible Debt Issuances [Abstract]          
Share Price (in dollars per share) | $ / shares     $ 11.79 $ 11.79  
Capital Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]          
Remainder of 2016     $ 209 $ 209  
2017     298 298  
2018     251 251  
2019     209 209  
2020     101 101  
2021 and thereafter     124 124  
Capital Leases, Future Minimum Payments, Interest Included in Payments     (92) (92)  
Capital Lease Obligations     1,100 1,100  
Reorganization obligation [Member]          
Long-term Debt, by Current and Noncurrent [Abstract]          
Current debt     167 167 161
Long-term debt     601 601 701
Debt     $ 768 $ 768 862
Effective interest rate (in thousandths)     6.25% 6.25%  
Capital lease obligations [Member]          
Long-term Debt, by Current and Noncurrent [Abstract]          
Current debt [1]     $ 338 $ 338 326
Long-term debt [1]     762 762 466
Debt [1]     $ 1,100 $ 1,100 $ 792
Weighted average effective interest rate (in thousandths)     3.30% 3.30% 3.70%
Leases, Capital [Abstract]          
Capital Lease Obligations Incurred       $ 444  
Capital lease obligations [Member] | Sales-leaseback transactions [Member]          
Leases, Capital [Abstract]          
Capital Lease Obligations Incurred     $ 424 424  
Percentage, Incurred in Current Period     2.70%    
Weighted Average Remaining Term     4 years    
Secured Debt [Member] | 1.258% senior notes [Member]          
Long-term Debt, by Current and Noncurrent [Abstract]          
Current debt     $ 87 87 $ 87
Long-term debt     174 174 217
Debt     $ 261 $ 261 304
Stated interest rate (in thousandths)     1.258% 1.258%  
Effective interest rate (in thousandths)     1.97% 1.97%  
Secured Debt [Member] | Term Loan B Credit Facility [Member] | Libor [Member] | Initiation of New Financing Arrangements [Member]          
Subsequent Events [Abstract]          
Expected Amount of Notes To Be Issued Through Syndication Process   $ 500      
Expected Term of Notes To Be Issued Through Syndication Process   6 years      
Corporate bonds [Member] | 2022 senior notes [Member]          
Long-term Debt, by Current and Noncurrent [Abstract]          
Current debt     $ 0 $ 0 0
Long-term debt     589 589 589
Debt     $ 589 $ 589 589
Stated interest rate (in thousandths)     5.875% 5.875%  
Effective interest rate (in thousandths)     6.14% 6.14%  
Corporate bonds [Member] | 2023 senior notes [Member]          
Long-term Debt, by Current and Noncurrent [Abstract]          
Current debt     $ 0 $ 0 0
Long-term debt     989 989 988
Debt     $ 989 $ 989 988
Stated interest rate (in thousandths)     5.25% 5.25%  
Effective interest rate (in thousandths)     5.43% 5.43%  
Corporate bonds [Member] | 2024 senior notes [Member]          
Long-term Debt, by Current and Noncurrent [Abstract]          
Current debt     $ 0 $ 0 0
Long-term debt     545 545 545
Debt     $ 545 $ 545 545
Stated interest rate (in thousandths)     5.25% 5.25%  
Effective interest rate (in thousandths)     5.38% 5.38%  
Corporate bonds [Member] | 2025 senior notes [Member]          
Long-term Debt, by Current and Noncurrent [Abstract]          
Current debt     $ 0 $ 0 0
Long-term debt     1,139 1,139 1,138
Debt     $ 1,139 $ 1,139 1,138
Stated interest rate (in thousandths)     5.50% 5.50%  
Effective interest rate (in thousandths)     5.56% 5.56%  
Corporate bonds [Member] | 2026 senior notes [Member]          
Long-term Debt, by Current and Noncurrent [Abstract]          
Current debt     $ 0 $ 0 0
Long-term debt     446 446 446
Debt     $ 446 $ 446 446
Stated interest rate (in thousandths)     5.625% 5.625%  
Effective interest rate (in thousandths)     5.73% 5.73%  
Convertible Debt [Member]          
Convertible Debt Issuances [Abstract]          
Outstanding principal     $ 1,899 $ 1,899  
Underlying Shares (shares issuable upon conversion) | shares       119  
Conversion value in excess of principal [2]       $ 119  
Conversion rights, minimum number of trading days (in days) | integer       20  
Conversion rights, consecutive trading period (in days)       30 days  
Conversion rights, threshold percentage of applicable conversion price (in hundredths)       130.00%  
Convertible Debt [Member] | 2032C convertible senior notes [Member]          
Long-term Debt, by Current and Noncurrent [Abstract]          
Current debt [4]     0 [3] $ 0 [3] 0
Long-term debt [4]     200 [3] 200 [3] 197
Debt [4]     $ 200 [3] $ 200 [3] 197
Stated interest rate (in thousandths)     2.375% 2.375%  
Effective interest rate (in thousandths)     5.95% 5.95%  
Convertible Debt Issuances [Abstract]          
Holder Put Date (Earliest) [5]       May 31, 2019  
Outstanding principal     $ 224 $ 224  
Underlying Shares (shares issuable upon conversion) | shares       23  
Initial conversion, price per share | $ / shares     $ 9.63 $ 9.63  
Conversion price per share threshold (dollars per share) | $ / shares [6]       $ 12.52  
Conversion value in excess of principal [2]       $ 50  
Convertible Debt [Member] | 2032D convertible senior notes [Member]          
Long-term Debt, by Current and Noncurrent [Abstract]          
Current debt [4]     $ 0 [3] 0 [3] 0
Long-term debt [4]     152 [3] 152 [3] 150
Debt [4]     $ 152 [3] $ 152 [3] 150
Stated interest rate (in thousandths)     3.125% 3.125%  
Effective interest rate (in thousandths)     6.33% 6.33%  
Convertible Debt Issuances [Abstract]          
Holder Put Date (Earliest) [5]       May 31, 2021  
Outstanding principal     $ 177 $ 177  
Underlying Shares (shares issuable upon conversion) | shares       18  
Initial conversion, price per share | $ / shares     $ 9.98 $ 9.98  
Conversion price per share threshold (dollars per share) | $ / shares [6]       $ 12.97  
Conversion value in excess of principal [2]       $ 32  
Convertible Debt [Member] | 2033E convertible senior notes [Member]          
Long-term Debt, by Current and Noncurrent [Abstract]          
Current debt [4]     $ 166 [3] 166 [3] 217
Long-term debt [4]     0 [3] 0 [3] 0
Debt [4]     $ 166 [3] $ 166 [3] 217
Stated interest rate (in thousandths)     1.625% 1.625%  
Effective interest rate (in thousandths)     4.50% 4.50%  
Convertible Debt Issuances [Abstract]          
Holder Put Date (Earliest) [5]       Feb. 28, 2018  
Outstanding principal     $ 176 $ 176  
Underlying Shares (shares issuable upon conversion) | shares       16  
Initial conversion, price per share | $ / shares     $ 10.93 $ 10.93  
Conversion price per share threshold (dollars per share) | $ / shares [6]       $ 14.21  
Conversion value in excess of principal [2]       $ 13  
Convertible Debt [Member] | 2033F convertible senior note [Member]          
Long-term Debt, by Current and Noncurrent [Abstract]          
Current debt [4]     $ 267 [3] 267 [3] 264
Long-term debt [4]     0 [3] 0 [3] 0
Debt [4]     $ 267 [3] $ 267 [3] 264
Stated interest rate (in thousandths)     2.125% 2.125%  
Effective interest rate (in thousandths)     4.93% 4.93%  
Convertible Debt Issuances [Abstract]          
Holder Put Date (Earliest) [5]       Feb. 28, 2020  
Outstanding principal     $ 297 $ 297  
Underlying Shares (shares issuable upon conversion) | shares       27  
Initial conversion, price per share | $ / shares     $ 10.93 $ 10.93  
Conversion price per share threshold (dollars per share) | $ / shares [6]       $ 14.21  
Conversion value in excess of principal [2]       $ 24  
Convertible Debt [Member] | 2043G convertible senior notes [Member]          
Long-term Debt, by Current and Noncurrent [Abstract]          
Current debt [4]     $ 0 0 0
Long-term debt [4]     650 650 644
Debt [4]     $ 650 $ 650 644
Stated interest rate (in thousandths)     3.00% 3.00%  
Effective interest rate (in thousandths)     6.76% 6.76%  
Convertible Debt Issuances [Abstract]          
Holder Put Date (Earliest) [5],[7]       Nov. 30, 2028  
Outstanding principal [7]     $ 1,025 $ 1,025  
Underlying Shares (shares issuable upon conversion) | shares       35  
Initial conversion, price per share | $ / shares     $ 29.16 $ 29.16  
Conversion price per share threshold (dollars per share) | $ / shares [6]       $ 37.91  
Conversion value in excess of principal [2]       $ 0  
Debt Instrument Issued At A Discount Original Principal Amount [7]     $ 820 820  
Debt Instrument, Scheduled Accreted Principal Amount [7]     917 917  
Debt Instrument, Face Amount [7]     1,030 1,030  
Other notes payable [Member]          
Long-term Debt, by Current and Noncurrent [Abstract]          
Current debt     100 100 34
Long-term debt     247 247 171
Debt     $ 347 $ 347 $ 205
Weighted average stated interest rate (in thousandths)     2.519% 2.519%  
Weighted average effective interest rate (in thousandths)     2.70% 2.70%  
Other notes payable [Member] | Secured Debt 6 [Member]          
Long-term Debt, by Current and Noncurrent [Abstract]          
Debt     $ 194 $ 194  
Convertible Debt Issuances [Abstract]          
Proceeds from Issuance of Other Long-term Debt $ 174        
Debt instrument, original term       3 years  
Other notes payable [Member] | Secured Debt 6 [Member] | Libor [Member]          
Convertible Debt Issuances [Abstract]          
Debt Instrument Variable Reference Rate Period 1       3 months  
Other notes payable [Member] | Secured Debt 6 [Member] | Libor [Member] | Maximum [Member]          
Convertible Debt Issuances [Abstract]          
Margin on variable rate financing (in hundredths)       2.20%  
Loans Payable [Member]          
Long-term Debt, by Maturity [Abstract]          
Remainder of 2016     97 $ 97  
2017     362 362  
2018     521 521  
2019     530 530  
2020     711 711  
2021 and thereafter     4,844 4,844  
Unamortized amounts     (546) (546)  
Notes Payable     $ 6,519 $ 6,519  
Senior Secured Notes [Member] | Senior Secured Notes [Member] | Maximum [Member] | Initiation of New Financing Arrangements [Member]          
Subsequent Events [Abstract]          
Amount of Senior Secured Notes Considering To Be Issued   $ 1,000      
[1] Weighted-average imputed rate of 3.3% and 3.7% as of March 3, 2016 and September 3, 2015, respectively.
[2] Based on our closing share price of $11.79 as of March 3, 2016.
[3] Since the closing price of our common stock for at least 20 trading days in the 30 trading day period ending on December 31, 2015 exceeded 130% of the conversion price per share, holders had the right to convert their notes at any time during the calendar quarter ended March 31, 2016. The closing price of our common stock did not meet the thresholds for the calendar quarter ended March 31, 2016; therefore, these notes are not convertible by the holders after March 31, 2016. The 2033 Notes are classified as current because the terms of these notes also require us to pay cash for the principal amount of any converted notes.
[4] We have either the obligation or the option to pay cash for the principal amount due upon conversion for all of our convertible notes. Since it is our current intent to settle in cash the principal amount of all of our convertible notes upon conversion, the dilutive effect of such notes on earnings per share is computed under the treasury stock method.
[5] The terms of our convertible notes give holders the right to require us to repurchase all or a portion of their notes at a date prior to the contractual maturity at a price equal to the principal amount thereof plus accrued interest.
[6] Holders have the right to convert all or a portion of their notes at a date prior to the contractual maturity if, during any calendar quarter, the closing price of our common stock for at least 20 trading days in the 30 consecutive trading days ending on the last trading day of the preceding calendar quarter is more than 130% of the conversion price. The closing price of our common stock exceeded the thresholds for the calendar quarter ended December 31, 2015 for our 2032 Notes and 2033 Notes; therefore, those notes were convertible by the holders through March 31, 2016. The closing price of our common stock did not meet the thresholds for the calendar quarter ended March 31, 2016; therefore, these notes are not convertible by the holders after March 31, 2016.
[7] The original principal amount of $820 million accretes up to $917 million in November 2028 and $1.03 billion at maturity in 2043.