Quarterly report pursuant to Section 13 or 15(d)

Retirement Benefit Plans (Net Periodic Expense) (Details)

v2.4.0.8
Retirement Benefit Plans (Net Periodic Expense) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
May 03, 2014
May 04, 2013
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Net periodic benefit expense/(income) $ 1 $ 34
Retirement Benefit Plans Total [Member]
   
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Service cost 15 20
Interest cost 55 54
Expected return on plan assets (87) (85)
Amortization of actuarial loss/(gain) 17 44
Amortization of prior service cost/(credit) (1) (1)
Net periodic benefit expense/(income) (1) 32
Primary and Supplemental Pension Plan Total [Member]
   
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Service cost 15 20
Interest cost 55 54
Expected return on plan assets (87) (85)
Amortization of actuarial loss/(gain) 17 44
Amortization of prior service cost/(credit) 1 1
Net periodic benefit expense/(income) 1 34
Primary Pension Plan [Member]
   
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Service cost 15 20
Interest cost 53 51
Expected return on plan assets (87) (85)
Amortization of actuarial loss/(gain) 13 38
Amortization of prior service cost/(credit) 1 1
Net periodic benefit expense/(income) (5) 25
Supplemental Pension Plans [Member]
   
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Service cost 0 0
Interest cost 2 3
Amortization of actuarial loss/(gain) 4 6
Amortization of prior service cost/(credit) 0 0
Net periodic benefit expense/(income) 6 9
Postretirement Health and Welfare Plan [Member]
   
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Service cost 0 0
Interest cost 0 0
Amortization of actuarial loss/(gain) 0 0
Amortization of prior service cost/(credit) (2) (2)
Net periodic benefit expense/(income) $ (2) $ (2)