Goodwill Tradenames and Other Assets Schedule of Tradenames by Segment (Details) (Tradenames [Member], USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 29, 2015
Indefinite-lived Intangible Assets [Roll Forward]  
Balance, December 28, 2014 $ 2,001,874
Foreign currency adjustment (413)
Balance, March 29, 2015 2,001,461
Birds Eye Frozen [Member]
 
Indefinite-lived Intangible Assets [Roll Forward]  
Balance, December 28, 2014 847,162
Foreign currency adjustment (413)
Balance, March 29, 2015 846,749
Duncan Hines Grocery [Member]
 
Indefinite-lived Intangible Assets [Roll Forward]  
Balance, December 28, 2014 1,118,712
Foreign currency adjustment 0
Balance, March 29, 2015 1,118,712
Specialty Foods [Member]
 
Indefinite-lived Intangible Assets [Roll Forward]  
Balance, December 28, 2014 36,000
Foreign currency adjustment 0
Balance, March 29, 2015 $ 36,000