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Income Taxes (Narrative) (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Oct. 31, 2015
Nov. 01, 2014
Oct. 31, 2015
Nov. 01, 2014
Effective Income Tax Rate, Continuing Operations 36.80% 35.50% 35.20% 36.90%
Income Taxes Paid $ 106 $ 112 $ 476 $ 481