Annual report pursuant to Section 13 and 15(d)

Retirement Benefit Plans Retirement Benefit Plans (Accumulated Benefit Obligation) (Details)

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Retirement Benefit Plans Retirement Benefit Plans (Accumulated Benefit Obligation) (Details) (USD $)
In Millions, unless otherwise specified
Feb. 01, 2014
Feb. 02, 2013
Jan. 27, 2012
Primary Pension Plan
     
Defined Benefit Plan Disclosure [Line Items]      
Accumulated benefit obligation $ 4,200 $ 4,700  
Fair value of plan assets 5,140 5,035 5,176
Supplemental Pension Plans
     
Defined Benefit Plan Disclosure [Line Items]      
Accumulated benefit obligation 200 268  
Fair value of plan assets $ 0 $ 0 $ 0