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Business Combinations (Narratives) (Details) - USD ($)
$ in Millions
12 Months Ended
Jul. 02, 2018
Feb. 02, 2018
Dec. 28, 2018
Mar. 29, 2019
Waterfall Holdings [Member]        
Business Acquisition [Line Items]        
Business Combination, Consideration Transferred $ 1,211.3      
Business Acquisition, Goodwill, Expected Tax Deductible Amount       $ 95.8
eBuilder [Member]        
Business Acquisition [Line Items]        
Business Combination, Consideration Transferred   $ 485.5    
Cash and Cash Equivalents [Member] | Viewpoint and e-Builder [Member]        
Business Acquisition [Line Items]        
Cash Purchase Consideration     $ 211.2