Employee Retirement Plans Summary of the Plans' Net Periodic Pension Cost, Benefit Obligations, Funded Status, and Net Balance Sheet Position (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Net Periodic Pension Cost:
Service cost	$ 4,400	$ 3,800	$ 1,700
Defined Benefit Plan, Net Periodic Benefit Cost	27,300	23,400	1,500
Change in Benefit Obligation:
Service cost	4,400	3,800	1,700
Defined Benefit Plan, Accumulated Benefit Obligation, (Increase) Decrease for Settlement and Curtailment	3,305
Amounts recognized in balance sheet at year end:
Accrued pension benefits	$ (334,511)	$ (322,988)
Non US Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Rate of Compensation Increase	0.60%	1.60%
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	100.00%
Defined Benefit Plan, Actual Plan Asset Allocations	100.00%	100.00%
Net Periodic Pension Cost:
Service cost	$ 4,013	$ 3,364
Interest cost	32,748	41,606
Expected return on assets	(70,630)	(68,845)
Amortization of net (gain) loss	(3,073)	(35)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement and Curtailment	(3,305)	632
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement	(313)	0
Defined Benefit Plan, Net Periodic Benefit Cost	(27,804)	(24,472)
Change in Benefit Obligation:
Benefit obligation – beginning of year	1,478,493	1,476,370
Service cost	4,013	3,364
Interest cost	32,748	41,606
Employee contributions	345	404
Actuarial (gain) loss	21,058	297,754
Pension settlement gain	(4,017)	0
Defined Benefit Plan, Plan Assets, Payment for Settlement	(3,254)	0
Net benefit payments	(65,160)	(64,466)
Benefit obligation – end of year	1,615,244	1,478,493	1,476,370
Defined Benefit Plan, Accumulated Benefit Obligation, (Increase) Decrease for Settlement and Curtailment		(706)
Change in Plan Assets:
Plan assets at fair value – beginning of year	1,173,865	1,287,723
Company contributions	3,062	17,758
Investment gain	72,342	161,405
Employee contributions	345	404
Benefit payments and plan expenses	(65,160)	(64,466)
Exchange effect	115,339	(228,959)
Plan assets at fair value – end of year	1,296,539	1,173,865	1,287,723
Funded Status:
Unfunded benefit obligation	(318,705)	(304,628)
Amounts recognized in balance sheet at year end:
Accrued pension benefits	(318,705)	(304,628)
Pre-tax components in accumulated other comprehensive income at period end:
Net actuarial loss	243,315	206,490
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, before Tax	44,316	181,384
Defined Benefit Plan, Amount Recognized in Net Periodic Benefit Cost (Credit) and Other Comprehensive (Income) Loss, before Tax	(7,041)	(35)
Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement and Curtailment Gain (Loss), before Tax	(763)	0
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, Tax	313	0
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), after Reclassification Adjustment, before Tax	(36,825)	(181,349)
Accumulated Benefit Obligation	$ 1,615,157	$ 1,478,435
Assumed discount rate	2.30%	2.50%
Expected return on assets	6.20%	6.20%
Defined Benefit Plan, Benefit Obligation, Foreign Currency Translation Gain (Loss)	$ 144,459	$ (275,833)
USPlans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	100.00%
Defined Benefit Plan, Actual Plan Asset Allocations	100.00%	100.00%
Net Periodic Pension Cost:
Service cost	$ 402	$ 456
Interest cost	1,240	1,280
Expected return on assets	(821)	(777)
Amortization of net (gain) loss	330	(126)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement and Curtailment	0	0
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement	0	0
Defined Benefit Plan, Net Periodic Benefit Cost	491	1,085
Change in Benefit Obligation:
Benefit obligation – beginning of year	31,949	31,830
Service cost	402	456
Interest cost	1,240	1,280
Employee contributions	0	0
Actuarial (gain) loss	(760)	(722)
Pension settlement gain	0	0
Defined Benefit Plan, Plan Assets, Payment for Settlement	0	0
Net benefit payments	(923)	(895)
Benefit obligation – end of year	31,908	31,949	31,830
Defined Benefit Plan, Accumulated Benefit Obligation, (Increase) Decrease for Settlement and Curtailment	0	0
Change in Plan Assets:
Plan assets at fair value – beginning of year	13,589	12,987
Company contributions	1,476	754
Investment gain	1,960	743
Employee contributions	0	0
Benefit payments and plan expenses	(923)	(895)
Exchange effect	0	0
Plan assets at fair value – end of year	16,102	13,589	$ 12,987
Funded Status:
Unfunded benefit obligation	(15,806)	(18,360)
Amounts recognized in balance sheet at year end:
Accrued pension benefits	(15,806)	(18,360)
Pre-tax components in accumulated other comprehensive income at period end:
Net actuarial loss	3,340	4,908
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, before Tax	(1,898)	(691)
Defined Benefit Plan, Amount Recognized in Net Periodic Benefit Cost (Credit) and Other Comprehensive (Income) Loss, before Tax	330	(126)
Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement and Curtailment Gain (Loss), before Tax	0	0
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, Tax	0	0
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), after Reclassification Adjustment, before Tax	1,568	817
Accumulated Benefit Obligation	$ 31,908	$ 31,041
Assumed discount rate	3.50%	3.90%
Expected return on assets	6.00%	6.00%
Defined Benefit Plan, Benefit Obligation, Foreign Currency Translation Gain (Loss)	$ 0	$ 0
Money Market Instruments [Member] | Non US Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	32.00%
Defined Benefit Plan, Actual Plan Asset Allocations	12.00%	8.00%
Money Market Instruments [Member] | USPlans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	4.00%
Defined Benefit Plan, Actual Plan Asset Allocations	3.00%	3.00%
Other (real estate & commodities) [Member] | Non US Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	13.00%
Defined Benefit Plan, Actual Plan Asset Allocations	11.00%	12.00%
Other (real estate & commodities) [Member] | USPlans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	8.00%
Defined Benefit Plan, Actual Plan Asset Allocations	7.00%	7.00%
Cash and Cash Equivalents [Member] | Non US Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	0.00%
Defined Benefit Plan, Actual Plan Asset Allocations	3.00%	5.00%