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Restructuring - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Oct. 30, 2020 | Oct. 25, 2019 | Oct. 30, 2020 | Oct. 25, 2019
Restructuring Cost and Reserve [Line Items] |  |  |  |
Incremental expense related to acceptance of voluntary early retirement packages | $ 97 |  | $ 97 |
Enterprise Excellence |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Charges | 90 | $ 95 | 169 | $ 231
Accrual adjustments | 3 | 1 | 5 | 13
Enterprise Excellence | Cost of products sold |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Charges | 32 | 32 | 59 | 67
Enterprise Excellence | Selling, general, and administrative expense |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Charges | 48 | $ 35 | 95 | $ 77
Enterprise Excellence | Minimum | Pre-tax exit and disposal costs and other |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Expected cost | 1,600 |  | 1,600 |
Enterprise Excellence | Maximum | Pre-tax exit and disposal costs and other |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Expected cost | 1,800 |  | 1,800 |
Simplification |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Charges |  |  | 56 |
Accrual adjustments | 8 |  | 8 |
Charges, including incremental defined benefit pension and post-retirement expenses for employees that accepted voluntary early retirement packages | 102 |  | 153 |
Incremental expense related to acceptance of voluntary early retirement packages | 97 |  | 97 |
Simplification | Selling, general, and administrative expense |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Charges | 2 |  | 3 |
Simplification | Minimum | Pre-tax exit and disposal costs and other |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Expected cost | 400 |  | 400 |
Simplification | Maximum | Pre-tax exit and disposal costs and other |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Expected cost | $ 450 |  | $ 450 |

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