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Earnings Per Share And Shareholders' Equity (Dividends) (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended
Apr. 29, 2017
Apr. 30, 2016
Earnings Per Share And Shareholders' Equity [Abstract]    
Ordinary Dividends $ 0.60 $ 0.60
Special Dividends 0 2
Total Dividends $ 0.6 $ 2.6
Payments of Dividends $ 172 $ 750