Annual report pursuant to Section 13 and 15(d)

Taxes (Narrative) (Details)

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Taxes (Narrative) (Details) - USD ($)
$ in Millions
 12 Months Ended
Jan. 30, 2016
Jan. 31, 2015
Feb. 01, 2014
Federal income tax statutory rate 35.00% 35.00% 35.00%
Net change in the valuation allowance $ 3 $ 1  
Federal net operating loss carryforwards 0    
State net operating loss carryforwards 615    
State credit carryforwards 30    
Unrecognized tax benefits that would impact effective income tax rate 115 112  
Charges to income tax expense for federal, state and local interest and penalties 1 (3) $ 9
Accrual for payment of federal, state and local interest and penalties 53 $ 52  
Other noncurrent liabilities [Member]      
Accrual for payment of federal, state and local interest and penalties 48    
Current Income Taxes [Member]      
Accrual for payment of federal, state and local interest and penalties $ 5    
Maximum [Member]      
Operating Loss Carryforwards, Expiration Dates Dec. 31, 2035    
Minimum [Member]      
Operating Loss Carryforwards, Expiration Dates Dec. 31, 2016