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Debt - Schedule of Long-term Debt (Details)
$ in Millions, TWD in Billions
1 Months Ended 2 Months Ended 3 Months Ended 6 Months Ended 9 Months Ended
Jun. 05, 2017
USD ($)
Apr. 11, 2017
USD ($)
Mar. 06, 2017
USD ($)
Dec. 06, 2016
TWD
payment
Dec. 02, 2016
USD ($)
Jun. 01, 2017
USD ($)
payment
Oct. 26, 2016
Jun. 01, 2017
USD ($)
payment
Apr. 25, 2017
Jun. 01, 2017
USD ($)
payment
d
Jun. 02, 2016
USD ($)
Jun. 01, 2017
TWD
payment
Sep. 01, 2016
USD ($)
Long-term Debt by Current and Noncurrent                          
Current debt           $ 1,161   $ 1,161   $ 1,161     $ 756
Long-term debt           10,485   10,485   10,485     9,154
Total Debt           11,646   11,646   11,646     9,910
Extinguishment of Debt Disclosures [Abstract]                          
Repayments of debt                   (1,774) $ (689)    
Loss on restructure of debt                   62 $ 4    
Reorganization obligation                          
Long-term Debt by Current and Noncurrent                          
Current debt           154   154   154     189
Long-term debt           465   465   465     680
Total Debt           $ 619   $ 619   $ 619     869
Effective rate (in ten thousandths)           6.52%   6.52%   6.52%   6.52%  
Capital lease obligations                          
Long-term Debt by Current and Noncurrent                          
Current debt           $ 355   $ 355   $ 355     380
Long-term debt           917   917   917     1,026
Total Debt           $ 1,272   1,272   1,272     1,406
Capital Lease Obligations                          
Capital lease obligation incurred               $ 84   $ 217      
Capital lease obligations | Weighted Average                          
Long-term Debt by Current and Noncurrent                          
Effective rate (in ten thousandths)           3.64%   3.64%   3.64%   3.64%  
Capital Lease Obligations                          
Weighted average effective interest rate incurred in period (in thousandths)               6.50%          
Weighted-average expected capital lease term               5 years          
Secured Debt Instruments                          
Debt instrument, original term               5 years          
Secured Debt | 2021 MSAC senior secured term loan                          
Long-term Debt by Current and Noncurrent                          
Current debt           $ 38   $ 38   $ 38     0
Long-term debt           583   583   583     0
Total Debt           621   621   $ 621     0
Capital Lease Obligations                          
Weighted-average expected capital lease term                   5 years      
Secured Debt Instruments                          
Debt instrument, original term                   5 years      
Line of Credit Facility, Maximum Borrowing Capacity           $ 800   $ 800   $ 800      
Draw on facility agreement     $ 175   $ 450                
Debt instruments number of periodic payments | payment           16   16   16   16  
Secured Debt | 2021 MSAC senior secured term loan | Subsequent Event                          
Secured Debt Instruments                          
Draw on facility agreement $ 175                        
Secured Debt | 2021 MSAC senior secured term loan | LIBOR                          
Secured Debt Instruments                          
Debt Instrument Variable Reference Rate Period 1                   3 months      
Margin on variable rate financing (in thousandths)                   2.40%      
2021 MSTW Senior Secured Term Loan                          
Margin on variable rate financing (in thousandths)                   2.40%      
Secured Debt | 2021 MSAC senior secured term loan | Weighted Average                          
Long-term Debt by Current and Noncurrent                          
Stated rate           3.467%   3.467%   3.467%   3.467%  
Effective rate (in ten thousandths)           3.76%   3.76%   3.76%   3.76%  
Secured Debt | 2021 MSAC senior secured term loan | Maximum                          
Secured Debt Instruments                          
Debt Instrument, covenant, ratio of debt to fair value of equipment           0.8   0.8   0.8   0.8  
Secured Debt | 2021 MSTW senior secured term loan                          
Long-term Debt by Current and Noncurrent                          
Current debt           $ 0   $ 0   $ 0     0
Long-term debt           2,643   2,643   2,643     0
Total Debt           $ 2,643   $ 2,643   $ 2,643     0
Stated rate           2.852%   2.852%   2.852%   2.852%  
Effective rate (in ten thousandths)           3.02%   3.02%   3.02%   3.02%  
2021 MSTW Senior Secured Term Loan                          
Debt Instrument, Covenant Compliance, Penalty Interest Percent           0.25%   0.25%   0.25%   0.25%  
Secured Debt | 2021 MSTW senior secured term loan | Inotera                          
Capital Lease Obligations                          
Weighted-average expected capital lease term       5 years                  
Secured Debt Instruments                          
Debt instrument, original term       5 years                  
Debt instruments number of periodic payments | payment       6                  
2021 MSTW Senior Secured Term Loan                          
2021 Term loan draw | TWD       TWD 80.0                  
Secured Debt | 2021 MSTW senior secured term loan | Inotera | Micron Semiconductor Taiwan Co. Ltd. | Inotera Stock                          
2021 MSTW Senior Secured Term Loan                          
Percentage of post-acquisition MTTW shares subject to collateralization       82.00%                  
Secured Debt | 2021 MSTW senior secured term loan | Taipei Interbank Offered Rate TAIBOR | Inotera                          
Secured Debt Instruments                          
Margin on variable rate financing (in thousandths)       2.05%                  
2021 MSTW Senior Secured Term Loan                          
Margin on variable rate financing (in thousandths)       2.05%                  
Secured Debt | 2021 MSTW senior secured term loan | Minimum | Debt Covenant Period 2017                          
2021 MSTW Senior Secured Term Loan                          
Debt Instrument, Covenant, Tangible net worth           $ 9,000   $ 9,000   $ 9,000      
Secured Debt | 2021 MSTW senior secured term loan | Minimum | Debt Covenant Period 2018_2019                          
2021 MSTW Senior Secured Term Loan                          
Debt Instrument, Covenant, Tangible net worth           12,500   12,500   12,500      
Secured Debt | 2021 MSTW senior secured term loan | Minimum | Debt Covenant Period 2020_2021                          
2021 MSTW Senior Secured Term Loan                          
Debt Instrument, Covenant, Tangible net worth           $ 16,500   $ 16,500   $ 16,500      
Secured Debt | 2021 MSTW senior secured term loan | Minimum | Micron Semiconductor Taiwan Co. Ltd. | Debt Covenant Period 2017_2018                          
2021 MSTW Senior Secured Term Loan                          
Debt Instrument, Covenant, Tangible net worth | TWD                       TWD 4.0  
Secured Debt | 2021 MSTW senior secured term loan | Minimum | Micron Semiconductor Taiwan Co. Ltd. | Debt Covenant Period 2019_2020                          
2021 MSTW Senior Secured Term Loan                          
Debt Instrument, Covenant, Tangible net worth | TWD                       6.5  
Secured Debt | 2021 MSTW senior secured term loan | Minimum | Micron Semiconductor Taiwan Co. Ltd. | Debt Covenant Period 2021                          
2021 MSTW Senior Secured Term Loan                          
Debt Instrument, Covenant, Tangible net worth | TWD                       TWD 12.0  
Secured Debt | 2021 MSTW senior secured term loan | Minimum | Inotera                          
Secured Debt Instruments                          
Debt Instrument Variable Reference Rate Period 1       3 months                  
Secured Debt | 2021 MSTW senior secured term loan | Maximum | Debt Covenant Period 2017                          
2021 MSTW Senior Secured Term Loan                          
Debt Instrument, Covenant, Ratio Of Total Liabilities To EBITDA           3.5   3.5   3.5   3.5  
Secured Debt | 2021 MSTW senior secured term loan | Maximum | Debt Covenant Period 2018_2019                          
2021 MSTW Senior Secured Term Loan                          
Debt Instrument, Covenant, Ratio Of Total Liabilities To EBITDA           3.0   3.0   3.0   3.0  
Secured Debt | 2021 MSTW senior secured term loan | Maximum | Debt Covenant Period 2020_2021                          
2021 MSTW Senior Secured Term Loan                          
Debt Instrument, Covenant, Ratio Of Total Liabilities To EBITDA           2.5   2.5   2.5   2.5  
Secured Debt | 2021 MSTW senior secured term loan | Maximum | Micron Semiconductor Taiwan Co. Ltd. | Debt Covenant Period 2017_2018                          
2021 MSTW Senior Secured Term Loan                          
Debt Instrument, Covenant, Ratio Of Total Liabilities To EBITDA           5.5   5.5   5.5   5.5  
Secured Debt | 2021 MSTW senior secured term loan | Maximum | Micron Semiconductor Taiwan Co. Ltd. | Debt Covenant Period 2019_2021                          
2021 MSTW Senior Secured Term Loan                          
Debt Instrument, Covenant, Ratio Of Total Liabilities To EBITDA           4.5   4.5   4.5   4.5  
Secured Debt | 2021 MSTW senior secured term loan | Maximum | Inotera                          
Secured Debt Instruments                          
Debt Instrument Variable Reference Rate Period 1       6 months                  
Secured Debt | 2022 senior secured term loan B                          
Long-term Debt by Current and Noncurrent                          
Current debt           $ 5   $ 5   $ 5     5
Long-term debt           726   726   726     730
Total Debt           $ 731   $ 731   $ 731     735
Stated rate           3.55%   3.55%   3.55%   3.55%  
Effective rate (in ten thousandths)           3.97%   3.97%   3.97%   3.97%  
Secured Debt | 2022 senior secured term loan B | Variable Interest Rate Base Rate Option                          
Secured Debt Instruments                          
Margin on variable rate financing (in thousandths)           1.50% 5.00%   2.75%        
2021 MSTW Senior Secured Term Loan                          
Margin on variable rate financing (in thousandths)           1.50% 5.00%   2.75%        
Secured Debt | 2022 senior secured term loan B | LIBOR | Variable Interest Rate LIBOR Rate Option                          
Secured Debt Instruments                          
Margin on variable rate financing (in thousandths)           2.50% 6.00%   3.75%        
2021 MSTW Senior Secured Term Loan                          
Margin on variable rate financing (in thousandths)           2.50% 6.00%   3.75%        
Secured Debt | 2023 senior secured notes                          
Long-term Debt by Current and Noncurrent                          
Current debt           $ 0   $ 0   $ 0     0
Long-term debt           1,238   1,238   1,238     1,237
Total Debt           $ 1,238   $ 1,238   $ 1,238     1,237
Stated rate           7.50%   7.50%   7.50%   7.50%  
Effective rate (in ten thousandths)           7.69%   7.69%   7.69%   7.69%  
Corporate bonds                          
Extinguishment of Debt Disclosures [Abstract]                          
Repayments of debt   $ (1,000)                      
Loss on restructure of debt               $ 60          
Corporate bonds | 2022 senior notes                          
Long-term Debt by Current and Noncurrent                          
Current debt           $ 0   0   $ 0     0
Long-term debt           591   591   591     590
Total Debt           $ 591   $ 591   $ 591     590
Stated rate           5.875%   5.875%   5.875%   5.875%  
Effective rate (in ten thousandths)           6.14%   6.14%   6.14%   6.14%  
Corporate bonds | 2023 senior notes                          
Long-term Debt by Current and Noncurrent                          
Current debt           $ 0   $ 0   $ 0     0
Long-term debt           991   991   991     990
Total Debt           $ 991   $ 991   $ 991     990
Stated rate           5.25%   5.25%   5.25%   5.25%  
Effective rate (in ten thousandths)           5.43%   5.43%   5.43%   5.43%  
Corporate bonds | 2024 senior notes                          
Long-term Debt by Current and Noncurrent                          
Current debt           $ 0   $ 0   $ 0     0
Long-term debt           546   546   546     546
Total Debt           $ 546   $ 546   $ 546     546
Stated rate           5.25%   5.25%   5.25%   5.25%  
Effective rate (in ten thousandths)           5.38%   5.38%   5.38%   5.38%  
Corporate bonds | 2025 senior notes                          
Long-term Debt by Current and Noncurrent                          
Current debt           $ 0   $ 0   $ 0     0
Long-term debt           515   515   515     1,139
Total Debt           $ 515   $ 515   $ 515     1,139
Stated rate           5.50%   5.50%   5.50%   5.50%  
Effective rate (in ten thousandths)           5.56%   5.56%   5.56%   5.56%  
Extinguishment of Debt Disclosures [Abstract]                          
Principal amount of debt repurchased   (631)                      
Decrease in carrying amount of debt repurchased   (625)                      
Corporate bonds | 2026 senior notes                          
Long-term Debt by Current and Noncurrent                          
Current debt           $ 0   $ 0   $ 0     0
Long-term debt           128   128   128     446
Total Debt           $ 128   $ 128   $ 128     446
Stated rate           5.625%   5.625%   5.625%   5.625%  
Effective rate (in ten thousandths)           5.73%   5.73%   5.73%   5.73%  
Extinguishment of Debt Disclosures [Abstract]                          
Principal amount of debt repurchased   (321)                      
Decrease in carrying amount of debt repurchased   $ (318)                      
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                   $ 1,770      
Convertible Debt | 2032C convertible senior notes                          
Long-term Debt by Current and Noncurrent                          
Current debt           $ 0 [1]   $ 0 [1]   0 [1]     0
Long-term debt           209 [1]   209 [1]   209 [1]     204
Total Debt           $ 209 [1]   $ 209 [1]   $ 209 [1]     204
Stated rate           2.375%   2.375%   2.375%   2.375%  
Effective rate (in ten thousandths)           5.95%   5.95%   5.95%   5.95%  
Convertible Debt | 2032D convertible senior notes                          
Long-term Debt by Current and Noncurrent                          
Current debt           $ 0 [1]   $ 0 [1]   $ 0 [1]     0
Long-term debt           157 [1]   157 [1]   157 [1]     154
Total Debt           $ 157 [1]   $ 157 [1]   $ 157 [1]     154
Stated rate           3.125%   3.125%   3.125%   3.125%  
Effective rate (in ten thousandths)           6.33%   6.33%   6.33%   6.33%  
Convertible Debt | 2033E convertible senior notes                          
Long-term Debt by Current and Noncurrent                          
Current debt           $ 169 [1]   $ 169 [1]   $ 169 [1]     0
Long-term debt           0 [1]   0 [1]   0 [1]     168
Total Debt           $ 169 [1]   $ 169 [1]   $ 169 [1]     168
Stated rate           1.625%   1.625%   1.625%   1.625%  
Effective rate (in ten thousandths)           4.50%   4.50%   4.50%   4.50%  
Convertible Debt | 2033F convertible senior notes                          
Long-term Debt by Current and Noncurrent                          
Current debt           $ 276 [1]   $ 276 [1]   $ 276 [1]     0
Long-term debt           0 [1]   0 [1]   0 [1]     271
Total Debt           $ 276 [1]   $ 276 [1]   $ 276 [1]     271
Stated rate           2.125%   2.125%   2.125%   2.125%  
Effective rate (in ten thousandths)           4.93%   4.93%   4.93%   4.93%  
Convertible Debt | 2043G convertible senior notes                          
Long-term Debt by Current and Noncurrent                          
Current debt           $ 0   $ 0   $ 0     0
Long-term debt           668   668   668     657
Total Debt           $ 668   $ 668   $ 668     657
Stated rate           3.00%   3.00%   3.00%   3.00%  
Effective rate (in ten thousandths)           6.76%   6.76%   6.76%   6.76%  
Other notes payable                          
Long-term Debt by Current and Noncurrent                          
Current debt           $ 164   $ 164   $ 164     182
Long-term debt           108   108   108     316
Total Debt           $ 272   $ 272   $ 272     $ 498
Other notes payable | Weighted Average                          
Long-term Debt by Current and Noncurrent                          
Stated rate           2.038%   2.038%   2.038%   2.038%  
Effective rate (in ten thousandths)           2.57%   2.57%   2.57%   2.57%  
[1] 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 March 31, 2017, these notes are convertible by the holders through the calendar quarter ending June 30, 2017. The closing price of our common stock also exceeded the thresholds for the calendar quarter ended June 30, 2017; therefore, these notes are convertible by the holders through September 30, 2017. The 2033 Notes were classified as current as of June 1, 2017 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. In addition, the holders of the 2033E Notes can require us to repurchase for cash all or a portion of the 2033E Notes on February 15, 2018.