Restatement - Narrative (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Jul. 02, 2016	Apr. 02, 2016	Jul. 04, 2015	Jul. 02, 2016	Jul. 04, 2015
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Operating expenses	$ 383.0		$ 407.0	$ 763.0	$ 796.0
Increase (decrease) to net income (loss)	$ (45.0)	$ (71.0)	$ (77.0)	(71.0)	(102.0)
Correction in foreign currency translation				7.0	$ (16.0)
Restatement Adjustments
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Operating expenses				11.0
Increase (decrease) to net income (loss)		$ 7.0		(6.6)
Correction in foreign currency translation				$ 1.0