Investments (Tables)
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3 Months Ended |
Oct. 29, 2016 |
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| Investments, Debt and Equity Securities [Abstract] |
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| Summary Of Available-For-Sale Investments |
The following tables summarize the Company’s available-for-sale investments (in millions): | | | | | | | | | | | | | | | | | October 29, 2016 | Amortized Cost | | Gross Unrealized Gains | | Gross Unrealized Losses | | Fair Value | Fixed income securities: | | | | | | | | U.S. government securities | $ | 25,905 |
| | $ | 24 |
| | $ | (33 | ) | | $ | 25,896 |
| U.S. government agency securities | 2,619 |
| | 4 |
| | (1 | ) | | 2,622 |
| Non-U.S. government and agency securities | 1,104 |
| | 1 |
| | (1 | ) | | 1,104 |
| Corporate debt securities | 29,046 |
| | 177 |
| | (60 | ) | | 29,163 |
| U.S. agency mortgage-backed securities | 2,069 |
| | 16 |
| | (2 | ) | | 2,083 |
| Total fixed income securities | 60,743 |
| | 222 |
| | (97 | ) | | 60,868 |
| Publicly traded equity securities | 1,225 |
| | 346 |
| | (54 | ) | | 1,517 |
| Total (1) | $ | 61,968 |
| | $ | 568 |
| | $ | (151 | ) | | $ | 62,385 |
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| | | | | | | | | | | | | | | | | July 30, 2016 | Amortized Cost | | Gross Unrealized Gains | | Gross Unrealized Losses | | Fair Value | Fixed income securities: | | | | | | | | U.S. government securities | $ | 26,473 |
| | $ | 73 |
| | $ | (2 | ) | | $ | 26,544 |
| U.S. government agency securities | 2,809 |
| | 8 |
| | — |
| | 2,817 |
| Non-U.S. government and agency securities | 1,096 |
| | 4 |
| | — |
| | 1,100 |
| Corporate debt securities | 24,044 |
| | 263 |
| | (15 | ) | | 24,292 |
| U.S. agency mortgage-backed securities | 1,846 |
| | 22 |
| | — |
| | 1,868 |
| Total fixed income securities | 56,268 |
| | 370 |
| | (17 | ) | | 56,621 |
| Publicly traded equity securities | 1,211 |
| | 333 |
| | (40 | ) | | 1,504 |
| Total (1) | $ | 57,479 |
| | $ | 703 |
| | $ | (57 | ) | | $ | 58,125 |
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(1) Includes investments that were pending settlement as of the respective fiscal years. The net unsettled investment purchases were $328 million and $654 million as of October 29, 2016 and July 30, 2016, respectively. |
| Gross Realized Gains And Gross Realized Losses Related To Available-For-Sale Investment |
The following table presents the gross realized gains and gross realized losses related to the Company’s available-for-sale investments (in millions): | | | | | | | | | | Three Months Ended | | October 29, 2016 | | October 24, 2015 | Gross realized gains | $ | 30 |
| | $ | 35 |
| Gross realized losses | (15 | ) | | (36 | ) | Total | $ | 15 |
| | $ | (1 | ) |
The following table presents the realized net gains (losses) related to the Company’s available-for-sale investments by security type (in millions): | | | | | | | | | | Three Months Ended | | October 29, 2016 | | October 24, 2015 | Net gains/(losses) on investments in publicly traded equity securities | $ | 5 |
| | $ | (9 | ) | Net gains/(losses) on investments in fixed income securities | 10 |
| | 8 |
| Total | $ | 15 |
| | $ | (1 | ) |
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| Available-For-Sale Investments With Gross Unrealized Losses |
The following tables present the breakdown of the available-for-sale investments with gross unrealized losses and the duration that those losses had been unrealized at October 29, 2016 and July 30, 2016 (in millions): | | | | | | | | | | | | | | | | | | | | | | | | | | UNREALIZED LOSSES LESS THAN 12 MONTHS | | UNREALIZED LOSSES 12 MONTHS OR GREATER | | TOTAL | October 29, 2016 | Fair Value | | Gross Unrealized Losses | | Fair Value | | Gross Unrealized Losses | | Fair Value | | Gross Unrealized Losses | Fixed income securities: | | | | | | | | | | | | U.S. government securities | $ | 11,766 |
| | $ | (33 | ) | | $ | 100 |
| | $ | — |
| | $ | 11,866 |
| | $ | (33 | ) | U.S. government agency securities | 596 |
| | (1 | ) | | — |
| | — |
| | 596 |
| | (1 | ) | Non-U.S. government and agency securities | 498 |
| | (1 | ) | | — |
| | — |
| | 498 |
| | (1 | ) | Corporate debt securities | 9,013 |
| | (57 | ) | | 572 |
| | (3 | ) | | 9,585 |
| | (60 | ) | U.S. agency mortgage-backed securities | 594 |
| | (2 | ) | | — |
| | — |
| | 594 |
| | (2 | ) | Total fixed income securities | 22,467 |
| | (94 | ) |
| 672 |
|
| (3 | ) |
| 23,139 |
|
| (97 | ) | Publicly traded equity securities | 291 |
| | (53 | ) | | 3 |
| | (1 | ) | | 294 |
| | (54 | ) | Total | $ | 22,758 |
| | $ | (147 | ) | | $ | 675 |
| | $ | (4 | ) | | $ | 23,433 |
| | $ | (151 | ) |
| | | | | | | | | | | | | | | | | | | | | | | | | | UNREALIZED LOSSES LESS THAN 12 MONTHS | | UNREALIZED LOSSES 12 MONTHS OR GREATER | | TOTAL | July 30, 2016 | Fair Value | | Gross Unrealized Losses | | Fair Value | | Gross Unrealized Losses | | Fair Value | | Gross Unrealized Losses | Fixed income securities: | | | | | | | | | | | | U.S. government securities | $ | 2,414 |
| | $ | (2 | ) | | $ | — |
| | $ | — |
| | $ | 2,414 |
| | $ | (2 | ) | U.S. government agency securities | 144 |
| | — |
| | — |
| | — |
| | 144 |
| | — |
| Non-U.S. government and agency securities | 61 |
| | — |
| | — |
| | — |
| | 61 |
| | — |
| Corporate debt securities | 2,499 |
| | (7 | ) | | 1,208 |
| | (8 | ) | | 3,707 |
| | (15 | ) | U.S. agency mortgage-backed securities | 174 |
| | — |
| | — |
| | — |
| | 174 |
| | — |
| Total fixed income securities | 5,292 |
| | (9 | ) | | 1,208 |
| | (8 | ) | | 6,500 |
| | (17 | ) | Publicly traded equity securities | 188 |
| | (40 | ) | | — |
| | — |
| | 188 |
| | (40 | ) | Total | $ | 5,480 |
| | $ | (49 | ) | | $ | 1,208 |
| | $ | (8 | ) | | $ | 6,688 |
| | $ | (57 | ) |
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| Maturities of Fixed Income Securities |
The following table summarizes the maturities of the Company’s fixed income securities as of October 29, 2016 (in millions): | | | | | | | | | | Amortized Cost | | Fair Value | Less than 1 year | $ | 12,967 |
| | $ | 12,977 |
| Due in 1 to 2 years | 17,042 |
| | 17,071 |
| Due in 2 to 5 years | 25,125 |
| | 25,230 |
| Due after 5 years | 3,540 |
| | 3,507 |
| Mortgage-backed securities with no single maturity | 2,069 |
| | 2,083 |
| Total | $ | 60,743 |
| | $ | 60,868 |
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| Equity Method and Cost Method Investments |
For such investments that were accounted for under the equity and cost method as of October 29, 2016 and July 30, 2016, the amounts are summarized in the following table (in millions): | | | | | | | | | | October 29, 2016 | | July 30, 2016 | Equity method investments | $ | 162 |
| | $ | 174 |
| Cost method investments | 829 |
| | 829 |
| Total | $ | 991 |
| | $ | 1,003 |
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