Property and Equipment (Details Textual) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Jan. 01, 2012
Property and Equipment (Textual) [Abstract]
Assets under capital leases	$ 17.7	$ 17.7
Property and Equipment (Additional Textual) [Abstract]
Interest in property and equipment		1.2
Depreciation expense	78.8	72.2	61.6
Accumulated amortization related to capital leases	8.4	7.4
Depreciation expense related to capital leases	1.0	1.0	1.0
Buildings and improvements
Property and Equipment (Textual) [Abstract]
Assets under capital leases	17.1
Equipment
Property and Equipment (Textual) [Abstract]
Assets under capital leases	$ 0.6