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Comprehensive Income (Loss) (Details) - USD ($) $ in Millions | 6 Months Ended
--- | ---
Jan. 27, 2024 | Jan. 28, 2023
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |
Beginning balance | $ 44,353 | $ 39,773
Other comprehensive income (loss) before reclassifications | 90 | 18
(Gains) losses reclassified out of AOCI | 18 | (29)
Tax benefit (expense) | (45) | 47
Ending balance | 46,251 | 41,474
Accumulated Other Comprehensive Income (Loss) |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |
Beginning balance | (1,575) | (1,622)
Ending balance | (1,512) | (1,586)
Net Unrealized Gains (Losses) on Available-for-Sale Investments |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |
Beginning balance | (440) | (379)
Other comprehensive income (loss) before reclassifications | 132 | (76)
(Gains) losses reclassified out of AOCI | 43 | 9
Tax benefit (expense) | (42) | 11
Ending balance | (307) | (435)
Net Unrealized Gains (Losses) Cash Flow Hedging Instruments |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |
Beginning balance | 18 | 44
Other comprehensive income (loss) before reclassifications | 39 | (12)
(Gains) losses reclassified out of AOCI | (23) | (37)
Tax benefit (expense) | (4) | 12
Ending balance | 30 | 7
Cumulative Translation Adjustment and Actuarial Gains (Losses) |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |
Beginning balance | (1,153) | (1,287)
Other comprehensive income (loss) before reclassifications | (81) | 106
(Gains) losses reclassified out of AOCI | (2) | (1)
Tax benefit (expense) | 1 | 24
Ending balance | $ (1,235) | $ (1,158)

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