|
Retirement Benefit Plans (Defined Contribution Plans) (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
|
Aug. 03, 2013
|
Jul. 28, 2012
|
Aug. 03, 2013
|
Jul. 28, 2012
|
|
| Retirement Benefit Plans | ||||
| Defined contribution plan, total expense | $ 12 | $ 14 | $ 26 | $ 30 |