Pension and Retirement Plans Schedule of Net Periodic Benefit Cost, Pinnacle Foods (Details) (USD $)
3 Months Ended 12 Months Ended
Mar. 29, 2015
Mar. 30, 2014
Dec. 28, 2014
Defined Benefit Plans and Other Postretirement Benefit Plans, Pinnacle Foods      
Defined Benefit Plan Disclosure [Line Items]      
Interest cost $ 2,828,000 $ 2,902,000  
Expected return on assets (3,391,000) (3,292,000)  
Amortization of actuarial loss 269,000 32,000  
Net periodic cost (294,000) (358,000)  
Expected future contributions 2,800,000    
Company contributions 1,700,000 2,100,000 7,800,000
Defined Benefit Plans and Other Postretirement Benefit Plans, Multi-employer Plans [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Employer contributions $ 193,000 $ 193,000