Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 02, 2016	Jan. 03, 2015
Goodwill [Roll Forward]
Goodwill at beginning of year	$ 1,336,333	$ 717,551
Accumulated impairment losses	(15,914)	(15,914)
Goodwill at beginning of year	1,320,419	701,637
Goodwill acquired during year	262	705,328
Foreign currency translation	(87,579)	(86,546)
Goodwill at end of year	1,249,016	1,336,333
Accumulated impairment losses at end of year	(15,914)	(15,914)
Goodwill at end of year	1,233,102	1,320,419
Feed Ingredients [Member]
Goodwill [Roll Forward]
Goodwill at beginning of year	863,508	679,811
Accumulated impairment losses	(15,914)	(15,914)
Goodwill at beginning of year	847,594	663,897
Goodwill acquired during year	(259)	225,889
Foreign currency translation	(50,452)	(42,192)
Goodwill at end of year	812,797	863,508
Accumulated impairment losses at end of year	(15,914)	(15,914)
Goodwill at end of year	796,883	847,594
Food Ingredients [Member]
Goodwill [Roll Forward]
Goodwill at beginning of year	346,153	0
Accumulated impairment losses	0	0
Goodwill at beginning of year	346,153	0
Goodwill acquired during year	0	375,633
Foreign currency translation	(22,768)	(29,480)
Goodwill at end of year	323,385	346,153
Accumulated impairment losses at end of year	0	0
Goodwill at end of year	323,385	346,153
Fuel Ingredients [Member]
Goodwill [Roll Forward]
Goodwill at beginning of year	126,672	37,740
Accumulated impairment losses	0	0
Goodwill at beginning of year	126,672	37,740
Goodwill acquired during year	521	103,806
Foreign currency translation	(14,359)	(14,874)
Goodwill at end of year	112,834	126,672
Accumulated impairment losses at end of year	0	0
Goodwill at end of year	$ 112,834	$ 126,672