Revenues - Narrative (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jul. 01, 2018	Jul. 02, 2017	Jul. 01, 2018	Jul. 02, 2017	Jan. 01, 2018	Dec. 31, 2017
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Increase (decrease) in retained earnings	$ 814,071,000		$ 814,071,000			$ 833,610,000
Decrease in revenues	(668,639,000)	$ (610,633,000)	(1,274,204,000)	$ (1,162,014,000)
Accrued rebates	23,600,000		23,600,000
Accrued returns	8,700,000		8,700,000
Estimated price adjustments, accounts receivable			26,600,000
Contract with customer, deferred revenues	96,400,000		96,400,000		$ 104,400,000
Contract with customer, deferred revenues, current	84,700,000		84,700,000
Contract with customer, deferred revenues, noncurrent	11,700,000		11,700,000
Contract with customer, revenue recognized	46,600,000		98,600,000
Deferred sales commission	2,300,000		2,300,000
Sales commissions	6,300,000		12,500,000
Accounting Standards Update 2014-09
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Increase (decrease) in retained earnings					$ 2,600,000
Decrease in revenues	$ 0		$ 100,000