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Comprehensive Income (Loss) (Tables) | 12 Months Ended
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Jul. 31, 2021
Equity [Abstract] |
Components of AOCI, Net of Tax | The components of AOCI, net of tax, and the other comprehensive income (loss) are summarized as follows (in millions):
| Net Unrealized Gains (Losses) on Available-for-Sale Investments |  | Net Unrealized Gains (Losses) Cash Flow Hedging Instruments |  | Cumulative Translation Adjustment and Actuarial Gains and Losses |  | Accumulated Other Comprehensive Income (Loss)
BALANCE AT JULY 28, 2018 | $ | (310) |  |  | $ | (11) |  |  | $ | (528) |  |  | $ | (849) |
Other comprehensive income (loss) before reclassifications | 560 |  |  | — |  |  | (267) |  |  | 293 |
(Gains) losses reclassified out of AOCI | 13 |  |  | (3) |  |  | 2 |  |  | 12 |
Tax benefit (expense) | (95) |  |  | — |  |  | 15 |  |  | (80) |
Total change for the period | 478 |  |  | (3) |  |  | (250) |  |  | 225 |
Effect of adoption of accounting standard | (168) |  |  | — |  |  | — |  |  | (168) |
BALANCE AT JULY 27, 2019 | — |  |  | (14) |  |  | (778) |  |  | (792) |
Other comprehensive income (loss) before reclassifications | 420 |  |  | 7 |  |  | (51) |  |  | 376 |
(Gains) losses reclassified out of AOCI | (42) |  |  | 1 |  |  | 6 |  |  | (35) |
Tax benefit (expense) | (63) |  |  | — |  |  | (5) |  |  | (68) |
BALANCE AT JULY 25, 2020 | 315 |  |  | (6) |  |  | (828) |  |  | (519) |
Other comprehensive income (loss) before reclassifications | (141) |  |  | 20 |  |  | 229 |  |  | 108 |
(Gains) losses reclassified out of AOCI | (53) |  |  | (14) |  |  | 3 |  |  | (64) |
Tax benefit (expense) | 61 |  |  | (1) |  |  | (2) |  |  | 58 |
BALANCE AT JULY 31, 2021 | $ | 182 |  |  | $ | (1) |  |  | $ | (598) |  |  | $ | (417) |

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450520&loc=d3e32583-110901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=124509347&loc=SL7669686-108580 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900 + Details
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