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Stock-Based Compensation - Narrative (Details) - USD ($)
$ / shares in Units, $ in Millions
9 Months Ended
Feb. 26, 2014
Oct. 25, 2015
Minimum [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Potential per share consideration due upon change in control   $ 40.00
Stock options [Member] | Minimum [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Vesting period   3 years
Stock options [Member] | Maximum [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Vesting period   4 years
Performance shares [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Weighted average grant date fair value   $ 28.60
Market Performance Units, Tranche 1 [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Weighted average grant date fair value $ 17.26  
Market Performance Units, Tranche 2 [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Weighted average grant date fair value $ 14.88  
Market performance shares [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Weighted average grant date fair value   $ 0.00
Employee restricted stock unit awards [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Vesting period   4 years
Weighted average grant date fair value   $ 21.02
Subject To Share Settlement [Member] | Non-employee director stock unit awards [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Vesting period   1 year
Weighted average grant date fair value   $ 19.70
Subject To Cash Settlement [Member] | Non-employee director stock unit awards [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Weighted average grant date fair value   $ 19.70
Vested but unsettled stock units   175,132
Individuals Not Associated With EnVery Transaction [Member] | Performance shares [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Vesting period   3 years
Performance condition, highest potential performance level   200.00%
Maximum number of shares which would be settled in shares   525,032
Maximum number of shares which would be settled in cash   525,032
Target performance metrics for performance unit awards, fiscal year 2016   58.00%
Target performance metrics for performance unit awards, fiscal year 2015   0.00%
Target performance metrics for performance unit awards, fiscal year 2014   0.00%
Individuals Associated With EnVery Transaction [Member] | Performance shares [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Vesting period   4 years
Performance condition, highest potential performance level   100.00%
Maximum number of shares which would be settled in shares   36,000
Award vesting percentage   25.00%
Number of shares to be issued for current fiscal year grants   0
CEO [Member] | Market Performance Units, Tranche 1 [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Award vesting percentage 30.00%  
Award performance period 120 days  
CEO [Member] | Market Performance Units, Tranche 1 [Member] | Minimum [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Average per share closing price used to determine vesting rights (in dollars per share) $ 35.00  
CEO [Member] | Market Performance Units, Tranche 2 [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Award performance period 120 days  
CEO [Member] | Market Performance Units, Tranche 2 [Member] | Minimum [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Average per share closing price used to determine vesting rights (in dollars per share) $ 40.00  
Other Long-term Liabilities [Member] | Subject To Cash Settlement [Member] | Non-employee director stock unit awards [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share-based compensation liability, long-term   $ 1.9