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Investments - Other Investments (Details) - USD ($)
$ in Millions
1 Months Ended 12 Months Ended
Sep. 30, 2015
Jan. 02, 2016
Sep. 29, 2015
Other Noncurrent Assets [Member]      
Cost method investment     $ 6.0
BAM Labs, Inc. [Member]      
Remeasured Fair Value $ 12.9    
Acquisition related costs   $ 3.4  
BAM Labs, Inc. [Member] | General and Administrative Expense [Member]      
Gain on remeasurement of cost investment, net of acquisition related expenses   $ 3.5