Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 02, 2016	Jan. 03, 2015	Dec. 28, 2013
Before-Tax Amount
Actuarial (loss)/gain recognized	$ (3,822)	$ (34,547)	$ 18,773
Amortization of actuarial loss	5,101	2,078	5,202
Actuarial prior service cost recognized		1,140
Amortization of curtailment	(1,181)
Amortization of prior service costs	(67)	23	142
Amortization of settlement	5,291
Other	471
Total defined benefit pension plans	5,793	(31,306)	24,117
Tax (Expense) or Benefit
Actuarial (loss)/gain recognized	1,499	12,001	(6,904)
Amortization of actuarial loss	(1,986)	(806)	(2,018)
Actuarial prior service cost recognized		(261)
Amortization of curtailment	328
Amortization of prior service costs	36	(9)	(55)
Amortization of settlement	(1,468)
Other	0
Total defined benefit pension plans	(1,591)	10,925	(8,977)
Net-of-Tax Amount
Actuarial (loss)/gain recognized	(2,323)	(22,546)	11,869
Amortization of actuarial loss	3,115	1,272	3,184
Amortization of prior service costs	(31)	14	87
Actuarial prior service cost recognized	0	879
Amortization of curtailment	(853)	0
Amortization of settlement	3,823	0
Other	471	0
Total defined benefit pension plans	4,202	(20,381)	15,140
Before-Tax Amount
Gain/(loss) recognized in other comprehensive income (loss)	4,400	1,800
Tax (Expense) or Benefit
Gain/(loss) recognized in other comprehensive income (loss)	(1,700)	(700)
Net-of-Tax Amount
Other comprehensive income/(loss)	(153,755)	(153,231)	11,686
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent	(2,712)	11,794	(9,780)
Total other comprehensive income, net of tax	(156,467)	(141,437)	1,906
Foreign currency translation adjustments	(162,436)	(119,684)	(14,502)
Natural Gas Swap [Member]
Before-Tax Amount
Loss/(gain) reclassified to net income		(196)	(41)
Gain/(loss) recognized in other comprehensive income (loss)		11	248
Total natural gas derivatives		(185)	207
Tax (Expense) or Benefit
Loss/(gain) reclassified to net income		76	16
Gain/(loss) recognized in other comprehensive income (loss)		(4)	(96)
Total natural gas derivatives		72	(80)
Net-of-Tax Amount
Loss/(gain) reclassified to net income		(120)	(25)
Gain/(loss) recognized in other comprehensive income (loss)		7	152
Total natural gas derivatives		(113)	127
Interest Rate Swap [Member]
Before-Tax Amount
Loss/(gain) reclassified to net income			(14,502)
Tax (Expense) or Benefit
Loss/(gain) reclassified to net income			0
Net-of-Tax Amount
Loss/(gain) reclassified to net income			(14,502)
Corn Option [Member]
Before-Tax Amount
Loss/(gain) reclassified to net income	(1,517)	(3,868)	(5,486)
Gain/(loss) recognized in other comprehensive income (loss)	4,405	1,812	7,350
Total natural gas derivatives	2,888	(2,056)	1,864
Tax (Expense) or Benefit
Loss/(gain) reclassified to net income	589	1,501	2,129
Gain/(loss) recognized in other comprehensive income (loss)	(1,710)	(704)	(2,852)
Total natural gas derivatives	(1,121)	(797)	(723)
Net-of-Tax Amount
Loss/(gain) reclassified to net income	(928)	(2,367)	(3,357)
Gain/(loss) recognized in other comprehensive income (loss)	2,695	1,108	4,498
Total natural gas derivatives	1,767	(1,259)	1,141
Accumulated Other Comprehensive Income (Loss) [Member]
Net-of-Tax Amount
Total defined benefit pension plans	4,202	(20,381)	15,140
Net-of-Tax Amount
Total other comprehensive income, net of tax	(164,827)	(125,884)	(14,502)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax	(162,436)	(119,684)
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax	0	0
Foreign currency translation adjustments	(162,436)	(119,684)
Accumulated Other Comprehensive Income (Loss) [Member] | Natural Gas Swap [Member]
Net-of-Tax Amount
Total natural gas derivatives		(113)	127
Accumulated Other Comprehensive Income (Loss) [Member] | Corn Option [Member]
Net-of-Tax Amount
Total natural gas derivatives	$ 1,767	$ (1,259)	$ 1,141