Property and Equipment (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Property and Equipment [Line Items]
Property, plant and equipment, gross	$ 1,856.7	$ 1,820.0
Accumulated depreciation and amortization	1,098.0	1,026.2
Property, Plant and Equipment, Net	758.7	793.8
Amortization	17.9	15.4	13.2
Land Member
Property and Equipment [Line Items]
Property, plant and equipment, gross	68.0	70.8
Buildings [Member]
Property and Equipment [Line Items]
Property, plant and equipment, gross	258.0	247.6
Leasehold improvements Member
Property and Equipment [Line Items]
Property, plant and equipment, gross	215.6	217.5
Vehicles [Member]
Property and Equipment [Line Items]
Property, plant and equipment, gross	438.0	433.6
Capitalized software [Member]
Property and Equipment [Line Items]
Property, plant and equipment, gross	184.6	168.2
Other machinery and equipment [Member]
Property and Equipment [Line Items]
Property, plant and equipment, gross	$ 692.5	$ 682.3