Employee Retirement Plans and Postretirement Benefits Defined Contribution Plans (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 29, 2012	Dec. 31, 2011
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan, contribution during the period	$ 20.5	$ 23.0	$ 27.6
Canada Defined Contribution Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan, contributions by employer, low end of the range (as a percent)	3.00%
Defined contribution plan, contributions by employer, high end of the range (as a percent)	8.50%
United States Defined Contribution Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan, contributions by employer, low end of the range (as a percent)	5.00%
Defined contribution plan, contributions by employer, high end of the range (as a percent)	9.00%