Retirement Plans (Fair Value Of Pension Plan Assets) (Details) - Pension Plans Defined Benefit Excluding Interest and Dividend Receivables and Pending Investment Purchases and Sales [Member] - USD ($) $ in Millions	Jan. 30, 2021	Feb. 01, 2020
Fair value of pension plan assets	$ 3,248	$ 3,414
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair value of pension plan assets	796	2,157
Significant Observable Inputs (Level 2) [Member]
Fair value of pension plan assets	1,965	778
Significant Unobservable Inputs (Level 3) [Member]
Fair value of pension plan assets	0	0
Short term investments [Member]
Fair value of pension plan assets	3
Short term investments [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair value of pension plan assets	0
Short term investments [Member] | Significant Observable Inputs (Level 2) [Member]
Fair value of pension plan assets	3
Short term investments [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair value of pension plan assets	0
Money market pooled funds [Member]
Fair value of pension plan assets	136	37
Money market pooled funds [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair value of pension plan assets	136	37
Money market pooled funds [Member] | Significant Observable Inputs (Level 2) [Member]
Fair value of pension plan assets	0	0
Money market pooled funds [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair value of pension plan assets	0	0
Equity Securities, U.S. Pooled Funds [Member]
Fair value of pension plan assets	356	474
Equity Securities, U.S. Pooled Funds [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair value of pension plan assets	356	474
Equity Securities, U.S. Pooled Funds [Member] | Significant Observable Inputs (Level 2) [Member]
Fair value of pension plan assets	0	0
Equity Securities, U.S. Pooled Funds [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair value of pension plan assets	0	0
Equity Securities, International Pooled Funds [Member]
Fair value of pension plan assets	333	357
Equity Securities, International Pooled Funds [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair value of pension plan assets	37	82
Equity Securities, International Pooled Funds [Member] | Significant Observable Inputs (Level 2) [Member]
Fair value of pension plan assets	0	0
Equity Securities, International Pooled Funds [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair value of pension plan assets	0	0
U.S. Treasury bonds [Member]
Fair value of pension plan assets	270	58
U.S. Treasury bonds [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair value of pension plan assets	0	0
U.S. Treasury bonds [Member] | Significant Observable Inputs (Level 2) [Member]
Fair value of pension plan assets	270	58
U.S. Treasury bonds [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair value of pension plan assets	0	0
Other Government bonds [Member]
Fair value of pension plan assets	63	61
Other Government bonds [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair value of pension plan assets	0	0
Other Government bonds [Member] | Significant Observable Inputs (Level 2) [Member]
Fair value of pension plan assets	63	61
Other Government bonds [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair value of pension plan assets	0	0
Corporate bonds [Member]
Fair value of pension plan assets	1,609	615
Corporate bonds [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair value of pension plan assets	0	0
Corporate bonds [Member] | Significant Observable Inputs (Level 2) [Member]
Fair value of pension plan assets	1,609	615
Corporate bonds [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair value of pension plan assets	0	0
Mortgage-backed securities and forwards [Member]
Fair value of pension plan assets	11	23
Mortgage-backed securities and forwards [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair value of pension plan assets	0	0
Mortgage-backed securities and forwards [Member] | Significant Observable Inputs (Level 2) [Member]
Fair value of pension plan assets	11	23
Mortgage-backed securities and forwards [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair value of pension plan assets	0	0
Asset-backed securities [Member]
Fair value of pension plan assets	1	10
Asset-backed securities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair value of pension plan assets	0	0
Asset-backed securities [Member] | Significant Observable Inputs (Level 2) [Member]
Fair value of pension plan assets	1	10
Asset-backed securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair value of pension plan assets	0	0
Pooled funds [Member]
Fair value of pension plan assets	271	1,442
Pooled funds [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair value of pension plan assets	271	1,442
Pooled funds [Member] | Significant Observable Inputs (Level 2) [Member]
Fair value of pension plan assets	0	0
Pooled funds [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair value of pension plan assets	0	0
Real Estate [Member]
Fair value of pension plan assets	31	37
Real Estate [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair value of pension plan assets	0	0
Real Estate [Member] | Significant Observable Inputs (Level 2) [Member]
Fair value of pension plan assets	0	0
Real Estate [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair value of pension plan assets	0	0
Private equity [Member]
Fair value of pension plan assets	160	167
Private equity [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair value of pension plan assets	0	0
Private equity [Member] | Significant Observable Inputs (Level 2) [Member]
Fair value of pension plan assets	0	0
Private equity [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair value of pension plan assets	0	0
Derivatives in a positive position [Member]
Fair value of pension plan assets	8	4
Derivatives in a positive position [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair value of pension plan assets	0	0
Derivatives in a positive position [Member] | Significant Observable Inputs (Level 2) [Member]
Fair value of pension plan assets	8	4
Derivatives in a positive position [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair value of pension plan assets	0	0
Derivatives in a negative position [Member]
Fair value of pension plan assets	(4)	(6)
Derivatives in a negative position [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair value of pension plan assets	(4)	0
Derivatives in a negative position [Member] | Significant Observable Inputs (Level 2) [Member]
Fair value of pension plan assets	0	(6)
Derivatives in a negative position [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair value of pension plan assets	$ 0	0
Equity Securities, U.S. Stocks [Member]
Fair value of pension plan assets		122
Equity Securities, U.S. Stocks [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair value of pension plan assets		122
Equity Securities, U.S. Stocks [Member] | Significant Observable Inputs (Level 2) [Member]
Fair value of pension plan assets		0
Equity Securities, U.S. Stocks [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair value of pension plan assets		0
Bonds [Member]
Fair value of pension plan assets		13
Bonds [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair value of pension plan assets		0
Bonds [Member] | Significant Observable Inputs (Level 2) [Member]
Fair value of pension plan assets		13
Bonds [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair value of pension plan assets		$ 0