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 6 Months Ended
Aug. 02, 2014
Aug. 03, 2013
Aug. 02, 2014
Aug. 03, 2013
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Net periodic benefit expense/(income) $ 2 $ 34 $ 3 $ 68
Retirement Benefit Plans Total [Member]
       
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Service cost 16 19 31 39
Interest cost 54 54 109 108
Expected return on plan assets (87) (85) (174) (170)
Amortization of actuarial loss/(gain) 16 44 33 88
Amortization of prior service cost/(credit) 1 0 0 (1)
Net periodic benefit expense/(income) 0 32 (1) 64
Primary and Supplemental Pension Plan Total [Member]
       
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Service cost 16 19 31 39
Interest cost 54 54 109 108
Expected return on plan assets (87) (85) (174) (170)
Amortization of actuarial loss/(gain) 16 44 33 88
Amortization of prior service cost/(credit) 3 2 4 3
Net periodic benefit expense/(income) 2 34 3 68
Primary Pension Plan [Member]
       
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Service cost 16 19 31 39
Interest cost 52 51 105 102
Expected return on plan assets (87) (85) (174) (170)
Amortization of actuarial loss/(gain) 12 38 25 76
Amortization of prior service cost/(credit) 3 2 4 3
Net periodic benefit expense/(income) (4) 25 (9) 50
Supplemental Pension Plans [Member]
       
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Service cost 0 0 0 0
Interest cost 2 3 4 6
Amortization of actuarial loss/(gain) 4 6 8 12
Amortization of prior service cost/(credit) 0 0 0 0
Net periodic benefit expense/(income) 6 9 12 18
Postretirement Health and Welfare Plan [Member]
       
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Service cost 0 0 0 0
Interest cost 0 0 0 0
Amortization of actuarial loss/(gain) 0 0 0 0
Amortization of prior service cost/(credit) (2) (2) (4) (4)
Net periodic benefit expense/(income) $ (2) $ (2) $ (4) $ (4)