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Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jan. 29, 2022
Jan. 23, 2021
Jan. 29, 2022
Jan. 23, 2021
Statement of Comprehensive Income [Abstract]        
Change in net unrealized gains, tax benefit (expense) $ 47 $ 0 $ 75 $ 17
Net (gains) losses reclassified into earnings, tax (benefit) expense 3 2 5 7
Change in unrealized gains and losses, tax benefit (expense) (3) 1 (4) 1
Net (gains) losses reclassified into earnings, tax (benefit) expense 1 0 1 1
Net change in cumulative translation adjustment and actuarial gains and losses, tax benefit (expense) $ 0 $ (2) $ 9 $ (3)