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BENEFIT PLANS - Net Periodic Benefit (Income) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Jul. 31, 2021 | Aug. 01, 2020 | Aug. 03, 2019
Pension Benefits |  |  |
Net Periodic Benefit (Income) Cost |  |  |
Expected return on plan assets | $ (104) | $ (105) | $ (112)
Interest cost | 37 | 57 | 76
Settlement (gain) charge | 0 | 11 | 0
Amortization of prior service credit | 0 | 0 | 0
Amortization of net actuarial loss (gain) | 1 | 0 | 0
Net periodic benefit (income) cost | (66) | (37) | (36)
Other Changes in Plan Assets and Benefits Obligations Recognized in Other Comprehensive Income (Loss) |  |  |
Net actuarial (gain) loss | (225) | 109 | 58
Prior service cost (benefit) | 0 | 0 | 0
Amortization of prior service benefit | 0 | 0 | 0
Amortization of net actuarial (gain) loss | (1) | 0 | 0
Total (benefit) expense recognized in Other comprehensive income (loss) | (226) | 109 | 58
Total (benefit) expense recognized in net periodic benefit cost (income) and Other comprehensive income (loss) | (292) | 72 | 22
Other Postretirement Benefits |  |  |
Net Periodic Benefit (Income) Cost |  |  |
Expected return on plan assets | 0 | 0 | 0
Interest cost | 0 | 1 | 1
Settlement (gain) charge | (17) | 0 | 0
Amortization of prior service credit | (1) | (1) | 0
Amortization of net actuarial loss (gain) | (1) | (2) | 0
Net periodic benefit (income) cost | (19) | (2) | 1
Other Changes in Plan Assets and Benefits Obligations Recognized in Other Comprehensive Income (Loss) |  |  |
Net actuarial (gain) loss | (8) | 0 | (10)
Prior service cost (benefit) | 25 | 0 | (4)
Amortization of prior service benefit | 3 | 1 | 0
Amortization of net actuarial (gain) loss | 1 | 2 | 0
Total (benefit) expense recognized in Other comprehensive income (loss) | 21 | 3 | (14)
Total (benefit) expense recognized in net periodic benefit cost (income) and Other comprehensive income (loss) | $ 2 | $ 1 | $ (13)

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