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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
May 04, 2013
May 05, 2012
May 04, 2013
May 05, 2012
Statement Of Income And Comprehensive Income [Abstract]        
Pension liability adjustments, taxes $ 1,296 $ 888 $ 4,489 $ 8,388
Unrealized loss adjustment on marketable securities net of taxes 7 14 24 74
Net losses on outstanding derivatives, taxes $ 150 $ 887 $ 408 $ 3,207