Acquisitions - Recognized Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 03, 2015	Jan. 02, 2016	Jan. 07, 2014	Dec. 28, 2013	Oct. 28, 2013
Business Acquisition [Line Items]
Goodwill	$ 1,320,419	$ 1,233,102		$ 701,637
Vion Ingredients [Member]
Business Acquisition [Line Items]
Business Combination Provisional Information Initial Accounting Incomplete Adjustment Working Capital	84,000
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Property, Plant, and Equipment	27,300
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Intangibles	17,600
Business Combination Provisional Information Initial Accounting Incomplete Adjustment Goodwill	72,100
Business Combination Provisional Information Initial Accounting Incomplete Adjustment Other	$ 27,000
Accounts receivable			$ 337,278
Inventory			375,306
Prepaid expense			23,135
Other current assets			3,525
Deferred tax assets			48,639
Property plant and equipment			981,009
Identifiable intangibles			464,193
Goodwill			702,672
Investment in unconsolidated subsidiaries			27,069
Other long term assets			1,101
Accounts payable			(210,477)
Current portion of long-term debt			(26,347)
Accrued expenses			(149,345)
Deferred tax liability			(350,003)
Long Term debt obligations			(4,109)
Other noncurrent liabilities			(57,721)
Noncontrolling interests			(90,919)
Purchase price, net of cash acquired of $91.2 million			$ 2,075,006
Rothsay [Member]
Business Acquisition [Line Items]
Accounts receivable					$ 13,220
Inventory					5,479
Prepaid expense					312
Property plant and equipment					138,175
Identifiable intangibles					240,386
Goodwill					262,797
Accounts payable					(12,159)
Accrued expenses					(5,701)
Deferred tax liability					(15,031)
Capital lease obligations					(10,741)
Other noncurrent liabilities					(4,102)
Purchase price, net of cash acquired					$ 612,635