Restatement - Statement of Cash Flows (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]
Net loss	$ (45.0)	$ (71.0)	$ (77.0)	$ (71.0)	$ (102.0)
Adjustments to reconcile net loss to net cash provided by operating activities:
Deferred income taxes				3.0	(25.0)
Changes in assets and liabilities, net of businesses acquired:
Accounts receivable		43.0		43.0	48.0
Inventories		35.0		35.0	(23.0)
Other assets		21.0		21.0	(17.0)
Accrued liabilities		(74.0)		(74.0)	1.0
Deferred revenue				4.0	16.0
Income taxes				(61.0)	(18.0)
All other, net				4.0	1.0
Net Cash Provided by (Used in) Operating Activities, Continuing Operations				122.0	$ 20.0
As Previously Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net loss		(78.0)
Changes in assets and liabilities, net of businesses acquired:
Accounts receivable		46.0
Inventories		32.0
Other assets		20.0
Accrued liabilities		(66.0)
Restatement Adjustments
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net loss		7.0		$ (6.6)
Changes in assets and liabilities, net of businesses acquired:
Accounts receivable		(3.0)
Inventories		3.0
Other assets		1.0
Accrued liabilities		$ (8.0)