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Components of Inventories (Detail) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2018
Jul. 01, 2017
Apr. 01, 2017
Jun. 30, 2018
Jul. 01, 2017
Dec. 30, 2017
Schedule of Inventory [Line Items]            
Payments to Acquire Businesses, Net of Cash Acquired $ 505.6 $ (5.3)   $ 506.8 $ 2,430.1  
Document Period End Date       Jun. 30, 2018    
Finished products 1,734.8     $ 1,734.8   $ 1,461.4
Work in process 197.3     197.3   155.5
Raw materials 512.1     512.1   401.5
Total 2,444.2     2,444.2   2,018.4
Newell Tools [Member]            
Schedule of Inventory [Line Items]            
Payments to Acquire Businesses, Net of Cash Acquired     $ 1,860.0      
Series of Individually Immaterial Business Acquisitions [Member]            
Schedule of Inventory [Line Items]            
Payments to Acquire Businesses, Net of Cash Acquired       84.3   $ 182.9
Inventories [Member] | Newell Tools [Member]            
Schedule of Inventory [Line Items]            
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets $ 195.5     $ 195.5