Annual report pursuant to Section 13 and 15(d)

Retirement Benefit Plans (Investments at Fair Value) (Details)

v2.4.0.6
Retirement Benefit Plans (Investments at Fair Value) (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Jan. 28, 2012
Jan. 29, 2011
Investments at Fair Value $ 5,176 $ 5,251
Total investment assets at fair value 5,177 5,257
Accounts payable, net (1) (6)
Defined Benefit Plan, Plan Assets at Fair Value, Valuation Techniques and Inputs  
Fair Value, Inputs, Level 1 [Member]
   
Total investment assets at fair value 1,826 2,835
Fair Value, Inputs, Level 2 [Member]
   
Total investment assets at fair value 2,761 1,876
Fair Value, Inputs, Level 3 [Member]
   
Total investment assets at fair value 590 546
Cash and cash equivalents total [Member]
   
Investments at Fair Value 48 74
Cash and cash equivalents total [Member] | Fair Value, Inputs, Level 1 [Member]
   
Investments at Fair Value 6 4
Cash and cash equivalents total [Member] | Fair Value, Inputs, Level 2 [Member]
   
Investments at Fair Value 42 70
Cash, Benefit Plan [Member]
   
Investments at Fair Value 6 4
Cash, Benefit Plan [Member] | Fair Value, Inputs, Level 1 [Member]
   
Investments at Fair Value 6 4
Common collective trusts [Member]
   
Investments at Fair Value 42 70
Common collective trusts [Member] | Fair Value, Inputs, Level 2 [Member]
   
Investments at Fair Value 42 70
Equity securities total [Member]
   
Investments at Fair Value 2,768 3,545
Equity securities total [Member] | Fair Value, Inputs, Level 1 [Member]
   
Investments at Fair Value 1,714 2,668
Equity securities total [Member] | Fair Value, Inputs, Level 2 [Member]
   
Investments at Fair Value 755 586
Equity securities total [Member] | Fair Value, Inputs, Level 3 [Member]
   
Investments at Fair Value 299 291
Equity Securities Held Within Common Collective Trusts, Domestic [Member]
   
Investments at Fair Value 341 117
Equity Securities Held Within Common Collective Trusts, Domestic [Member] | Fair Value, Inputs, Level 2 [Member]
   
Investments at Fair Value 341 117
Equity Securities Held Within Common Collective Trusts, International [Member]
   
Investments at Fair Value 400 465
Equity Securities Held Within Common Collective Trusts, International [Member] | Fair Value, Inputs, Level 2 [Member]
   
Investments at Fair Value 400 465
Equity Securities, domestic [Member]
   
Investments at Fair Value 1,379 2,264
Equity Securities, domestic [Member] | Fair Value, Inputs, Level 1 [Member]
   
Investments at Fair Value 1,379 2,261
Equity Securities, domestic [Member] | Fair Value, Inputs, Level 2 [Member]
   
Investments at Fair Value   3
Equity Securities, international [Member]
   
Investments at Fair Value 349 408
Equity Securities, international [Member] | Fair Value, Inputs, Level 1 [Member]
   
Investments at Fair Value 335 407
Equity Securities, international [Member] | Fair Value, Inputs, Level 2 [Member]
   
Investments at Fair Value 14 1
Private Equity [Member]
   
Investments at Fair Value 299 291
Private Equity [Member] | Fair Value, Inputs, Level 3 [Member]
   
Investments at Fair Value 299 291
Fixed income total [Member]
   
Investments at Fair Value 1,956 1,186
Fixed income total [Member] | Fair Value, Inputs, Level 2 [Member]
   
Investments at Fair Value 1,920 1,182
Fixed income total [Member] | Fair Value, Inputs, Level 3 [Member]
   
Investments at Fair Value 36 4
Debt Securities Held Within Common Collective Trusts [Member]
   
Investments at Fair Value 1,070 649
Debt Securities Held Within Common Collective Trusts [Member] | Fair Value, Inputs, Level 2 [Member]
   
Investments at Fair Value 1,070 649
US Treasury and Government [Member]
   
Investments at Fair Value 8 13
US Treasury and Government [Member] | Fair Value, Inputs, Level 2 [Member]
   
Investments at Fair Value 8 13
Corporate bonds [Member]
   
Investments at Fair Value 756 480
Corporate bonds [Member] | Fair Value, Inputs, Level 2 [Member]
   
Investments at Fair Value 720 476
Corporate bonds [Member] | Fair Value, Inputs, Level 3 [Member]
   
Investments at Fair Value 36 4
Municipal Bonds [Member]
   
Investments at Fair Value 80 23
Municipal Bonds [Member] | Fair Value, Inputs, Level 2 [Member]
   
Investments at Fair Value 80 23
Asset-backed Securities [Member]
   
Investments at Fair Value 42 10
Asset-backed Securities [Member] | Fair Value, Inputs, Level 2 [Member]
   
Investments at Fair Value 42 10
Other Fixed Income [Member]
   
Investments at Fair Value   11
Other Fixed Income [Member] | Fair Value, Inputs, Level 2 [Member]
   
Investments at Fair Value   11
Real Estate Total [Member]
   
Investments at Fair Value 405 452
Real Estate Total [Member] | Fair Value, Inputs, Level 1 [Member]
   
Investments at Fair Value 106 163
Real Estate Total [Member] | Fair Value, Inputs, Level 2 [Member]
   
Investments at Fair Value 44 38
Real Estate Total [Member] | Fair Value, Inputs, Level 3 [Member]
   
Investments at Fair Value 255 251
Real Estate [Member]
   
Investments at Fair Value 405 452
Real Estate [Member] | Fair Value, Inputs, Level 1 [Member]
   
Investments at Fair Value 106 163
Real Estate [Member] | Fair Value, Inputs, Level 2 [Member]
   
Investments at Fair Value 44 38
Real Estate [Member] | Fair Value, Inputs, Level 3 [Member]
   
Investments at Fair Value $ 255 $ 251