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Acquisitions Equity Method Investments (Details)
$ in Millions
3 Months Ended
Mar. 30, 2019
USD ($)
Schedule of Equity Method Investments [Line Items]  
Document Period End Date Mar. 30, 2019
MTD [Member]  
Schedule of Equity Method Investments [Line Items]  
Equity Method Investment, Ownership Percentage 20.00%
Payments to Acquire Equity Method Investments $ 234