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Restructuring and Other Charges - Schedule of Activities Related to Restructuring and Other Charges (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jan. 23, 2021 | Jan. 23, 2021 | Jan. 25, 2020
Restructuring Reserve [Roll Forward] |  |  |
Liability as of beginning period |  | $ 72 | $ 33
Charges |  | 836 | 226
Cash payments |  | (767) | (203)
Non-cash items |  | (21) | (23)
Liability as of ending period | $ 120 | 120 | 33
FISCAL 2020 AND PRIOR PLANS | Employee Severance |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Liability as of beginning period |  | 58 |
Charges |  | 0 |
Cash payments |  | (58) |
Non-cash items |  | 0 |
Liability as of ending period | 0 | 0 |
FISCAL 2020 AND PRIOR PLANS | Other |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Liability as of beginning period |  | 14 |
Charges |  | 2 |
Cash payments |  | (3) |
Non-cash items |  | 0 |
Liability as of ending period | 13 | 13 |
FISCAL 2021 PLAN |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Charges | 232 | 834 |
FISCAL 2021 PLAN | Employee Severance |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Liability as of beginning period |  | 0 |
Charges |  | 804 |
Cash payments |  | (703) |
Non-cash items |  | 0 |
Liability as of ending period | 101 | 101 |
FISCAL 2021 PLAN | Other |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Liability as of beginning period |  | 0 |
Charges |  | 30 |
Cash payments |  | (3) |
Non-cash items |  | (21) |
Liability as of ending period | $ 6 | $ 6 |
FISCAL 2018 AND PRIOR PLANS | Employee Severance |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Liability as of beginning period |  |  | 22
Charges |  |  | 209
Cash payments |  |  | (202)
Non-cash items |  |  | 0
Liability as of ending period |  |  | 29
FISCAL 2018 AND PRIOR PLANS | Other |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Liability as of beginning period |  |  | 11
Charges |  |  | 17
Cash payments |  |  | (1)
Non-cash items |  |  | (23)
Liability as of ending period |  |  | $ 4

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