Principles Of Consolidation (Property and Equipment) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Property, Plant and Equipment [Line Items]
Land	$ 267.8	$ 269.6
Structures	810.4	825.8
Revenue equipment	1,438.3	1,442.8
Technology equipment and software	133.9	127.0
Other	193.8	203.8
Total cost	2,844.2	2,869.0
Depreciation	$ 153.8	$ 165.2	$ 173.8
Structures [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, service life	10 years
Structures [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, service life	30 years
Revenue equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, service life	10 years
Revenue equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, service life	20 years
Technology equipment and software [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, service life	3 years
Technology equipment and software [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, service life	7 years
Other [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, service life	3 years
Other [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, service life	10 years