Annual report pursuant to Section 13 and 15(d)

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

v3.3.1.900
Retirement Benefit Plans Retirement Benefit Plans (Accumulated Benefit Obligation) (Details) - USD ($)
$ in Millions
Jan. 30, 2016
Jan. 31, 2015
Feb. 01, 2014
Pension Plan [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Accumulated benefit obligation $ 3,100 $ 4,900  
Fair value of plan assets 3,287 5,474 $ 5,140
Supplemental Employee Retirement Plan [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Accumulated benefit obligation 153 166  
Fair value of plan assets $ 0 $ 0 $ 0