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Long Term Debt (Details) - USD ($)
$ in Millions
Oct. 31, 2015
Jan. 31, 2015
Nov. 01, 2014
Long-term Debt      
Total long-term debt $ 1,639 $ 1,621 $ 1,635
Less: current portion (383) [1] (41) (44)
Total long-term debt, less current portion 1,256 1,580 1,591
Long-term Debt, Fair Value 1,718 1,677 1,672
2016 Notes [Member]      
Long-term Debt      
Total long-term debt 350 349 350
2018 Notes [Member]      
Long-term Debt      
Total long-term debt 500 500 500
2021 Notes [Member]      
Long-term Debt      
Total long-term debt 649 649 649
Interest Rate Swap [Member]      
Long-term Debt      
Total long-term debt 10 1 0
Financing Lease Obligations [Member]      
Long-term Debt      
Total long-term debt 88 69 77
Capital Lease Obligations [Member]      
Long-term Debt      
Total long-term debt 42 52 59
Other Debt [Member]      
Long-term Debt      
Total long-term debt $ 0 $ 1 $ 0
[1] Our 2016 Notes due March 15, 2016, are classified in the current portion of long-term debt as of October 31, 2015.