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Short-term Borrowings and Long-term Debt (Tables) | 12 Months Ended
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Jan. 31, 2018
Debt Instrument [Line Items] |
Schedule of Line of Credit Facilities | These committed lines of credit are summarized in the following table:
|  | As of January 31,
|  | 2018 |  | 2017
(Amounts in millions) |  | Available |  | Drawn |  | Undrawn |  | Available |  | Drawn |  | Undrawn
Five-year credit facility(1) |  | $ | 5,000 |  |  | $ | — |  |  | $ | 5,000 |  |  | $ | 5,000 |  |  | $ | — |  |  | $ | 5,000 |
364-day revolving credit facility(1) |  | 7,500 |  |  | — |  |  | 7,500 |  |  | 7,500 |  |  | — |  |  | 7,500 |
Total |  | $ | 12,500 |  |  | $ | — |  |  | $ | 12,500 |  |  | $ | 12,500 |  |  | $ | — |  |  | $ | 12,500 |
(1) | In May 2017, the Company renewed and extended its existing five-year credit facility and its existing 364-day revolving credit facility, both of which are used to support its commercial paper program.
Schedule of Long-term Debt Instruments | The Company's long-term debt, which includes the fair value instruments further discussed in Note 8, consists of the following:
|  |  |  | January 31, 2018 |  | January 31, 2017
(Amounts in millions) |  | Maturity Dates By Fiscal Year |  | Amount |  | Average Rate(1) |  | Amount |  | Average Rate(1)
Unsecured debt |  |  |  |  |  |  |  |  |  |
Fixed |  | 2019 - 2048 |  | $ | 24,540 |  |  | 3.9% |  | $ | 30,500 |  |  | 4.7%
Variable |  | 2019 - 2020 |  | 800 |  |  | 4.1% |  | 500 |  |  | 5.5%
Total U.S. dollar denominated |  |  |  | 25,340 |  |  |  |  | 31,000 |  |  |
Fixed |  | 2023 - 2030 |  | 3,101 |  |  | 3.3% |  | 2,674 |  |  | 3.3%
Variable |  |  |  | — |  |  |  |  | — |  |  |
Total Euro denominated |  |  |  | 3,101 |  |  |  |  | 2,674 |  |  |
Fixed |  | 2031 - 2039 |  | 3,801 |  |  | 5.4% |  | 4,370 |  |  | 5.3%
Variable |  |  |  | — |  |  |  |  | — |  |  |
Total Sterling denominated |  |  |  | 3,801 |  |  |  |  | 4,370 |  |  |
Fixed |  | 2021 - 2028 |  | 1,655 |  |  | 0.4% |  | 88 |  |  | 1.6%
Variable |  |  |  | — |  |  |  |  | — |  |  |
Total Yen denominated |  |  |  | 1,655 |  |  |  |  | 88 |  |  |
Total unsecured debt |  |  |  | 33,897 |  |  |  |  | 38,132 |  |  |
Total other(2) |  |  |  | (114 | ) |  |  |  | 139 |  |  |
Total debt |  |  |  | 33,783 |  |  |  |  | 38,271 |  |  |
Less amounts due within one year |  |  |  | (3,738 | ) |  |  |  | (2,256 | ) |  |
Long-term debt |  |  |  | $ | 30,045 |  |  |  |  | $ | 36,015 |  |  |
(1) | The average rate represents the weighted-average stated rate for each corresponding debt category, based on year-end balances and year-end interest rates. Interest costs are also impacted by certain derivative financial instruments described in Note 8.
(2) | Includes deferred loan costs, discounts, fair value hedges, foreign-held debt and secured debt. At January 31, 2018 and 2017 the Company had secured debt in the amount of $10 million and $14 million, respectively, which was collateralized by property that had an aggregate carrying amount of approximately $101 million and $82 million, respectively.
Schedule of Maturities of Long-term Debt | Annual maturities of long-term debt during the next five years and thereafter are as follows:
(Amounts in millions) | Annual
Fiscal Year | Maturities
2019 | $ | 3,733 |
2020 | 1,914 |
2021 | 3,336 |
2022 | 607 |
2023 | 2,934 |
Thereafter | 21,259 |
Total | $ | 33,783 |
Schedule of Fiscal Year 2018 Debt Issuances | Information on significant long-term debt issued during fiscal 2018 is as follows:
(Amounts in millions) |  |  |  |  |  |  |  |  |  |
Issue Date |  | Principal Amount |  | Maturity Date |  | Fixed vs. Floating |  | Interest Rate |  | Proceeds
July 18, 2017 |  | 70,000 JPY |  | July 15, 2022 |  | Fixed |  | 0.183% |  | $ | 619 |
July 18, 2017 |  | 40,000 JPY |  | July 18, 2024 |  | Fixed |  | 0.298% |  | 354 |
July 18, 2017 |  | 60,000 JPY |  | July 16, 2027 |  | Fixed |  | 0.520% |  | 530 |
October 20, 2017 |  | 300 USD |  | October 9, 2019 |  | Floating |  | Floating |  | 299 |
October 20, 2017 |  | 1,200 USD |  | October 9, 2019 |  | Fixed |  | 1.750% |  | 1,198 |
October 20, 2017 |  | 1,250 USD |  | December 15, 2020 |  | Fixed |  | 1.900% |  | 1,245 |
October 20, 2017 |  | 1,250 USD |  | December 15, 2022 |  | Fixed |  | 2.350% |  | 1,245 |
October 20, 2017 |  | 1,000 USD |  | December 15, 2024 |  | Fixed |  | 2.650% |  | 996 |
October 20, 2017 |  | 1,000 USD |  | December 15, 2047 |  | Fixed |  | 3.625% |  | 990 |
Total |  |  |  |  |  |  |  |  |  | $ | 7,476 |
Schedule of Fiscal 2018 and 2017 Debt Maturities | The following table provides details of debt repayments during fiscal 2018:
(Amounts in millions) |  |  |  |  |  |  |  |
Maturity Date |  | Principal Amount |  | Fixed vs. Floating |  | Interest Rate |  | Repayment(1)
April 5, 2017 |  | 1,000 USD |  | Fixed |  | 5.375% |  | $ | 1,000 |
April 21, 2017 |  | 500 USD |  | Fixed |  | 1.000% |  | 500 |
Total repayment of matured debt |  |  |  |  |  |  |  | 1,500 |
December 15, 2018 |  | 1,000 USD |  | Fixed |  | 1.950% |  | 276 |
February 1, 2019 |  | 500 USD |  | Fixed |  | 4.125% |  | 136 |
July 8, 2020 |  | 1,500 USD |  | Fixed |  | 3.625% |  | 661 |
October 25, 2020 |  | 1,750 USD |  | Fixed |  | 3.250% |  | 553 |
April 15, 2021 |  | 1,000 USD |  | Fixed |  | 4.250% |  | 491 |
October 16, 2023 |  | 250 USD |  | Fixed |  | 6.750% |  | 98 |
April 5, 2027 |  | 750 USD |  | Fixed |  | 5.875% |  | 267 |
February 15, 2030 |  | 500 USD |  | Fixed |  | 7.550% |  | 412 |
September 4, 2035 |  | 2,500 USD |  | Fixed |  | 5.250% |  | 532 |
September 28, 2035 |  | 1,000 GBP |  | Fixed |  | 5.250% |  | 260 |
August 17, 2037 |  | 3,000 USD |  | Fixed |  | 6.500% |  | 1,700 |
April 15, 2038 |  | 2,000 USD |  | Fixed |  | 6.200% |  | 1,081 |
January 19, 2039 |  | 1,000 GBP |  | Fixed |  | 4.875% |  | 851 |
April 2, 2040 |  | 1,250 USD |  | Fixed |  | 5.625% |  | 499 |
July 9, 2040 |  | 750 USD |  | Fixed |  | 4.875% |  | 372 |
October 25, 2040 |  | 1,250 USD |  | Fixed |  | 5.000% |  | 731 |
April 15, 2041 |  | 2,000 USD |  | Fixed |  | 5.625% |  | 1,082 |
April 11, 2043 |  | 1,000 USD |  | Fixed |  | 4.000% |  | 291 |
October 2, 2043 |  | 750 USD |  | Fixed |  | 4.750% |  | 481 |
April 22, 2044 |  | 1,000 USD |  | Fixed |  | 4.300% |  | 498 |
Total repayment of extinguished debt |  |  |  |  |  |  |  | 11,272 |
Total |  |  |  |  |  |  |  | $ | 12,772 |
(1) Represents portion of the principal amount repaid during fiscal 2018. In connection with extinguishing debt, the Company paid premiums of approximately $3.1 billion during fiscal 2018, resulting in a loss on extinguishment of debt of approximately $3.1 billion. During fiscal 2017, the following long-term debt matured and was repaid:
(Amounts in millions) |  |  |  |  |  |  |  |
Maturity Date |  | Principal Amount |  | Fixed vs. Floating |  | Interest Rate |  | Repayment
April 11, 2016 |  | 1,000 USD |  | Fixed |  | 0.600% |  | $ | 1,000 |
April 15, 2016 |  | 1,000 USD |  | Fixed |  | 2.800% |  | 1,000 |
|  |  |  |  |  |  |  | $ | 2,000 |

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