|
Fair Value Disclosures (REIT Assets Measured on Recurring Basis) (Details) (Fair Value, Inputs, Level 1 [Member], USD $)
In Millions |
Apr. 30, 2011
|
Jan. 29, 2011
|
May 01, 2010
|
|---|---|---|---|
|
Fair Value, Inputs, Level 1 [Member]
|
 |  |  |
| REIT assets | $ 289 | $ 253 | $ 225 |