Re-engineering Costs (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 27, 2014	Sep. 27, 2014	Jun. 28, 2014	Mar. 29, 2014	Dec. 28, 2013	Sep. 28, 2013	Jun. 29, 2013	Mar. 30, 2013	Dec. 27, 2014		Dec. 28, 2013		Dec. 29, 2012
Restructuring Cost and Reserve [Line Items]
Severance									$ 7.4		$ 7.3		$ 5.3
Other									3.6		2.0		17.1
Total re-engineering and impairment charges	2.7	2.6	3.4	2.3	2.2	2.7	2.2	2.2	11.0	[1]	9.3	[1]	22.4	[1]
Total pretax re-engineering costs									13.3		9.3		22.6
Non-severance exit costs													0.9
Write-down of inventories									17.8		13.3		13.6
Restructuring Reserve [Roll Forward]
Beginning balance				2.6				1.5	2.6		1.5		3.0
Provision	2.7	2.6	3.4	2.3	2.2	2.7	2.2	2.2	11.0	[1]	9.3	[1]	22.4	[1]
Non-cash charges									(1.8)		(0.1)		(16.2)
Ending balance	2.4				2.6				2.4		2.6		1.5
Re-engineering and impairment charges
Restructuring Cost and Reserve [Line Items]
Total pretax re-engineering costs									11.0		9.3		22.4
Cost of products sold
Restructuring Cost and Reserve [Line Items]
Total pretax re-engineering costs									2.3		0		0.2
Nutrimetics United Kingdom [Member]
Restructuring Cost and Reserve [Line Items]
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment Realized upon Sale or Liquidation, before Tax													16.2
Software write-off [Member]
Restructuring Cost and Reserve [Line Items]
Total pretax re-engineering costs									1.1
Severance
Restructuring Reserve [Roll Forward]
Cash expenditures									(7.1)		(6.1)		(6.0)
Other
Restructuring Reserve [Roll Forward]
Cash expenditures									(2.3)		(2.0)		(1.7)
Facility Closing [Member] | Armand Dupree United States [Member]
Restructuring Cost and Reserve [Line Items]
Write-down of inventories									1.9
Facility Closing [Member] | Nutrimetics Thailand [Member]
Restructuring Cost and Reserve [Line Items]
Write-down of inventories									$ 0.4

[1] The re-engineering and impairment charges line includes severance expenses and other exit costs. See Note 2 to the Consolidated Financial Statements.