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Basis of Presentation (Details) - USD ($)
3 Months Ended
Mar. 19, 2016
Jan. 27, 2017
Jan. 29, 2016
Oct. 28, 2016
Business Acquisition [Line Items]        
Common stock, par value (in usd per share) $ 0.50 $ 0.50 $ 0.50 $ 0.50
Termination fee $ 300,000,000      
Sherwin-Williams and Merger Sub | The Valspar Corporation        
Business Acquisition [Line Items]        
Proposed merger agreement, minimum amount of net sales from divestiture of assets required to decrease share price $ 650,000,000      
Proposed merger-related costs   $ 8,683,000 $ 0  
Sherwin-Williams and Merger Sub | The Valspar Corporation | Maximum        
Business Acquisition [Line Items]        
Proposed merger agreement, share price (in dollars per share) $ 113.00      
Sherwin-Williams and Merger Sub | The Valspar Corporation | Minimum        
Business Acquisition [Line Items]        
Proposed merger agreement, share price (in dollars per share) $ 105.00