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Pension Plans and Other Retirement Benefits - Components of Net Periodic Benefit Cost and Other Amounts Recognized in Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Millions
 12 Months Ended
Jan. 28, 2023
Jan. 29, 2022
Jan. 30, 2021
Net periodic pension cost:      
Defined Benefit Plan Net Periodic Benefit Cost Credit Expected Return Loss Statement Of Income Or Comprehensive Income Extensible List Not Disclosed Flag true    
Defined Benefit Plan Net Periodic Benefit Cost Credit Amortization Of Gain Loss Statement Of Income Or Comprehensive Income Extensible List Not Disclosed Flag true    
Funded Plan      
Net periodic pension cost:      
Service cost $ 48 $ 49 $ 50
Interest cost 58 52 50
Expected return on plan assets (89) (95) (88)
Amortization of prior service cost 0 0 0
Amortization of net actuarial loss 18 14 23
Total expense 35 20 35
Other changes in plan assets and benefit obligations recognized in other comprehensive income:      
Net (gain) loss (153) 66 (49)
Amortization of net (loss) (18) (14) (23)
Amortization of prior service cost 0 0 0
Total (gain) loss recognized in other comprehensive income (171) 52 (72)
Total recognized in net periodic benefit cost and other comprehensive income (loss) $ (136) $ 72 $ (37)
Discount rate 3.40% 3.20% 3.30%
Expected rate of return on plan assets 5.25% 5.75% 5.75%
Rate of compensation increase 4.00% 4.00% 4.00%
Unfunded Plan      
Net periodic pension cost:      
Service cost $ 2 $ 2 $ 2
Interest cost 4 3 3
Expected return on plan assets 0 0 0
Amortization of prior service cost 0 0 0
Amortization of net actuarial loss 4 4 4
Total expense 10 9 9
Other changes in plan assets and benefit obligations recognized in other comprehensive income:      
Net (gain) loss (9) 0 8
Amortization of net (loss) (4) (4) (4)
Amortization of prior service cost 0 0 0
Total (gain) loss recognized in other comprehensive income (13) (4) 4
Total recognized in net periodic benefit cost and other comprehensive income (loss) $ (3) $ 5 $ 13
Discount rate 3.30% 2.80% 3.10%
Rate of compensation increase 4.00% 4.00% 4.00%