Income Taxes Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Jan. 01, 2017
Income Tax Contingency [Line Items]
Inventory	$ 6,376	$ 10,994
Reserves and accruals	26,657	24,669
Accrued compensation	17,333	26,715
Net operating loss and credit carryforwards	88,503	113,415
Accrued pension	34,682	37,005
Restructuring reserve	2,586	1,954
Deferred revenue	28,478	38,113
Deferred Tax Assets, Unrealized Currency Losses	10,910	0
All other, net	0	682
Deferred Tax Assets, Gross	215,525	253,547
Postretirement health benefits	(3,391)	(4,785)
Deferred Tax Liabilities, Unrealized Currency Transaction Gains	0	(15,730)
Depreciation and amortization	(392,293)	(130,176)
Deferred Tax Liabilities, Other	(594)	0
Total deferred tax liabilities	(396,278)	(150,691)
Valuation allowance	(68,895)	(65,640)
Net deferred tax liabilities		(37,216)
Deferred Tax Liabilities, Net	249,648
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	(3,300)
Domestic Country [Member]
Income Tax Contingency [Line Items]
Net deferred tax liabilities	(44,974)	(52,604)
Foreign Tax Authority [Member]
Income Tax Contingency [Line Items]
Deferred Tax Liabilities, Net	$ 294,622	$ 15,388