|
Leases (Future Minimum Lease Payments) (Details) (USD $)
In Millions, unless otherwise specified |
Jan. 31, 2015
|
|---|---|
| Leases [Abstract] | |
| 2013, Operating | $ 237 |
| 2014, Operating | 216 |
| 2015, Operating | 185 |
| 2016, Operating | 153 |
| 2017, Operating | 132 |
| Thereafter, Operating | 1,896 |
| Less: sublease payments, Operating | (39) |
| Total minimum lease payments, Operating | 2,780 |
| 2013, Capital | 33 |
| 2014, Capital | 27 |
| 2015, Capital | 10 |
| 2016, Capital | 0 |
| 2017, Capital | 0 |
| Thereafter, Capital | 0 |
| Total minimum lease payments, Capital | 70 |
| Less: amounts representing interest | (4) |
| Present value of net minimum lease obligations | $ 66 |