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Accumulated Other Comprehensive Income (Loss) - AOCI Components (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Jul. 27, 2024 | Jul. 29, 2023 | Jul. 30, 2022
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |
Balance, beginning of period | $ 44,353 | $ 39,773 | $ 41,275
Other comprehensive income (loss) before reclassifications | 206 | 32 | (1,291)
(Gains) losses reclassified out of AOCI | 16 | (43) | (36)
Tax benefit (expense) | (77) | 58 | 122
Balance, end of period | 45,457 | 44,353 | 39,773
Net Unrealized Gains (Losses) on Available-for-Sale Investments |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |
Balance, beginning of period | (440) | (379) | 182
Other comprehensive income (loss) before reclassifications | 193 | (113) | (731)
(Gains) losses reclassified out of AOCI | 67 | 21 | (9)
Tax benefit (expense) | (61) | 31 | 179
Balance, end of period | (241) | (440) | (379)
Net Unrealized Gains (Losses) Cash Flow Hedging Instruments |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |
Balance, beginning of period | 18 | 44 | (1)
Other comprehensive income (loss) before reclassifications | 128 | 29 | 87
(Gains) losses reclassified out of AOCI | (49) | (63) | (29)
Tax benefit (expense) | (18) | 8 | (13)
Balance, end of period | 79 | 18 | 44
Cumulative Translation Adjustment and Actuarial Gains (Losses) |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |
Balance, beginning of period | (1,153) | (1,287) | (598)
Other comprehensive income (loss) before reclassifications | (115) | 116 | (647)
(Gains) losses reclassified out of AOCI | (2) | (1) | 2
Tax benefit (expense) | 2 | 19 | (44)
Balance, end of period | (1,268) | (1,153) | (1,287)
Accumulated Other Comprehensive Loss |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |
Balance, beginning of period | (1,575) | (1,622) | (417)
Balance, end of period | $ (1,430) | $ (1,575) | $ (1,622)

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