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Accumulated Other Comprehensive Income (Loss) - AOCI Components (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Jul. 26, 2025 | Jul. 27, 2024 | Jul. 29, 2023
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |
Balance, beginning of period | $ 45,457 | $ 44,353 | $ 39,773
Other comprehensive income (loss) before reclassifications | 485 | 206 | 32
(Gains) losses reclassified out of AOCI | 53 | 16 | (43)
Tax benefit (expense) | (62) | (77) | 58
Balance, end of period | 46,843 | 45,457 | 44,353
Net Unrealized Gains (Losses) on Available-for-Sale Investments |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |
Balance, beginning of period | (241) | (440) | (379)
Other comprehensive income (loss) before reclassifications | 152 | 193 | (113)
(Gains) losses reclassified out of AOCI | 100 | 67 | 21
Tax benefit (expense) | (68) | (61) | 31
Balance, end of period | (57) | (241) | (440)
Net Unrealized Gains (Losses) Cash Flow Hedging Instruments |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |
Balance, beginning of period | 79 | 18 | 44
Other comprehensive income (loss) before reclassifications | 29 | 128 | 29
(Gains) losses reclassified out of AOCI | (47) | (49) | (63)
Tax benefit (expense) | 4 | (18) | 8
Balance, end of period | 65 | 79 | 18
Cumulative Translation Adjustment and Actuarial Gains (Losses) |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |
Balance, beginning of period | (1,268) | (1,153) | (1,287)
Other comprehensive income (loss) before reclassifications | 304 | (115) | 116
(Gains) losses reclassified out of AOCI | 0 | (2) | (1)
Tax benefit (expense) | 2 | 2 | 19
Balance, end of period | (962) | (1,268) | (1,153)
Accumulated Other Comprehensive Loss |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |
Balance, beginning of period | (1,430) | (1,575) | (1,622)
Balance, end of period | $ (954) | $ (1,430) | $ (1,575)

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