Goodwill (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Jan. 03, 2015	Dec. 28, 2013
Goodwill [Roll Forward]
Goodwill at beginning of year	$ 717,551us-gaap_GoodwillGross	$ 397,283us-gaap_GoodwillGross
Accumulated impairment losses at beginning of year	(15,914)	(15,914)
Goodwill at beginning of year	701,637us-gaap_Goodwill	381,369us-gaap_Goodwill
Goodwill acquired during year	705,328us-gaap_GoodwillAcquiredDuringPeriod	326,669us-gaap_GoodwillAcquiredDuringPeriod
Translation	(86,546)us-gaap_GoodwillTranslationAdjustments	(6,401)us-gaap_GoodwillTranslationAdjustments
Goodwill at end of year	1,336,333us-gaap_GoodwillGross	717,551us-gaap_GoodwillGross
Accumulated impairment losses at end of year	(15,914)	(15,914)
Goodwill at end of year	1,320,419us-gaap_Goodwill	701,637us-gaap_Goodwill
Feed Ingredients [Member]
Goodwill [Roll Forward]
Goodwill at beginning of year	679,811	396,807
Accumulated impairment losses at beginning of year	(15,914)	(15,914)
Goodwill at beginning of year	663,897	380,893
Goodwill acquired during year	225,889	288,471
Translation	(42,192)	(5,467)
Goodwill at end of year	863,508	679,811
Accumulated impairment losses at end of year	(15,914)	(15,914)
Goodwill at end of year	847,594	663,897
Food Ingredients [Member]
Goodwill [Roll Forward]
Goodwill at beginning of year	0	0
Accumulated impairment losses at beginning of year	0	0
Goodwill at beginning of year	0	0
Goodwill acquired during year	375,633	0
Translation	(29,480)	0
Goodwill at end of year	346,153	0
Accumulated impairment losses at end of year	0	0
Goodwill at end of year	346,153	0
Fuel Ingredients [Member]
Goodwill [Roll Forward]
Goodwill at beginning of year	37,740	476
Accumulated impairment losses at beginning of year	0	0
Goodwill at beginning of year	37,740	476
Goodwill acquired during year	103,806	38,198
Translation	(14,874)	(934)
Goodwill at end of year	0	37,740
Accumulated impairment losses at end of year	(126,672)	0
Goodwill at end of year	$ 126,672	$ 37,740

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

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-Section 45

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

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Amount before accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

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-Section 50

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Amount of increase (decrease) from foreign currency translation adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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