Fair Value Disclosures (REIT Assets Measured on Recurring Basis) (Details) (USD $)
In Millions, unless otherwise specified
Nov. 01, 2014
Feb. 01, 2014
Nov. 02, 2013
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]      
Cost basis of REIT Assets $ 0 $ 0 $ 7
Fair Value, Inputs, Level 1 [Member]
     
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]      
REIT assets 0 0 32
Fair Value, Inputs, Level 2 [Member]
     
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]      
REIT assets 0 0 0
Fair Value, Inputs, Level 3 [Member]
     
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]      
REIT assets $ 0 $ 0 $ 0