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Retirement Plans and Other Benefits (Narrative) (Details) - USD ($)
12 Months Ended
Jan. 02, 2020
Jan. 01, 2020
Feb. 01, 2020
Dec. 31, 2019
Feb. 02, 2019
Feb. 03, 2018
Defined Benefit Plan Disclosure [Line Items]            
Plan participants years of service threshold       11 years    
Accumulated projected benefit obligation     $ 727,000,000   $ 696,000,000  
Future increases in medical plan costs to be incurred by retirees     100.00%      
SERP Medical Plan            
Defined Benefit Plan Disclosure [Line Items]            
Accumulated projected benefit obligation     $ 10,000,000      
Savings Plan            
Defined Benefit Plan Disclosure [Line Items]            
Defined contribution plan, employer matching contribution, percent of match 50.00% 100.00%   25.00%    
Employer's matching vesting period   2 years   5 years    
Employer's matching contribution     $ 4,000,000   $ 4,000,000  
Eligible service to qualified savings plans     28 days   28 days  
Defined Contribution Plan Employer Matching Contribution Period Of Service     1 year   1 year  
Defined Contribution Plan Employer Matching Contribution Minimum Number of Working Hours Required     1000 hours   1000 hours  
Defined Contribution Maximum Percentage of Compensation Matched By Company 5.00% 1.00%   4.00%    
United States            
Defined Benefit Plan Disclosure [Line Items]            
Employer's contribution         $ 97,000,000  
United States | Savings Plan            
Defined Benefit Plan Disclosure [Line Items]            
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Amount       $ 19,500    
Puerto Rico Plan [Member] | Savings Plan            
Defined Benefit Plan Disclosure [Line Items]            
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Amount       $ 15,000    
Pension Benefits [Member]            
Defined Benefit Plan Disclosure [Line Items]            
Pension benefits paid     $ 85,000,000   $ 165,000,000  
Discount rate, net periodic benefit costs     4.00%   4.00% 4.00%
Pension Benefits [Member] | Nonqualified Plan [Member]            
Defined Benefit Plan Disclosure [Line Items]            
Pension benefits paid     $ 2,000,000      
Pension Benefits [Member] | United States | Qualified Plan [Member]            
Defined Benefit Plan Disclosure [Line Items]            
Employer's contribution     55,000,000   $ 128,000,000  
Market-related value of plan assets     $ 601,000,000   615,000,000  
Pension Benefits [Member] | Investment in Equity Securities [Member] | United States | Qualified Plan [Member]            
Defined Benefit Plan Disclosure [Line Items]            
Target composition of plan assets     36.50%      
Pension Benefits [Member] | Investment in Equity Securities [Member] | CANADA | Qualified Plan [Member]            
Defined Benefit Plan Disclosure [Line Items]            
Target composition of plan assets     5.00%      
Pension Benefits [Member] | Fixed Income Securities | United States | Qualified Plan [Member]            
Defined Benefit Plan Disclosure [Line Items]            
Target composition of plan assets     60.00%      
Pension Benefits [Member] | Fixed Income Securities | CANADA | Qualified Plan [Member]            
Defined Benefit Plan Disclosure [Line Items]            
Target composition of plan assets     95.00%      
Pension Benefits [Member] | Real Estate Investment Trust | United States | Qualified Plan [Member]            
Defined Benefit Plan Disclosure [Line Items]            
Target composition of plan assets     3.50%      
Postretirement Benefits [Member]            
Defined Benefit Plan Disclosure [Line Items]            
Pension benefits paid     $ 2,000,000   $ 2,000,000  
Discount rate, net periodic benefit costs     4.10%   3.70% 4.00%
Minimum [Member]            
Defined Benefit Plan Disclosure [Line Items]            
Market-related value of plan assets, Period for calculation     3 years      
Maximum [Member]            
Defined Benefit Plan Disclosure [Line Items]            
Market-related value of plan assets, Period for calculation     5 years      
Maximum [Member] | Savings Plan            
Defined Benefit Plan Disclosure [Line Items]            
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent       40.00%