Stock Compensation Plans (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended				0 Months Ended	12 Months Ended						0 Months Ended	12 Months Ended	0 Months Ended	12 Months Ended	0 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2011 Series B Preferred Stock [Member]	Jul. 22, 2011 Common Stock [Member]	Dec. 31, 2011 Common Stock [Member]	Dec. 31, 2010 Common Stock [Member]	Dec. 31, 2012 Restricted Stock And Share Unit [Member]	Dec. 31, 2011 Restricted Stock And Share Unit [Member]	Dec. 31, 2012 2011 Long Term Incentive And Equity Award Plan [Member]	Sep. 26, 2011 2011 Long Term Incentive And Equity Award Plan [Member]	Mar. 01, 2010 Second Union Employee Option Plan [Member] Stock Options [Member]	Dec. 31, 2010 Second Union Employee Option Plan [Member] Stock Options [Member]	Jul. 22, 2011 Teamster National 401K Savings Plan [Member] Series B Preferred Stock [Member]	Dec. 31, 2012 Teamster National 401K Savings Plan [Member] Series B Preferred Stock [Member]	Sep. 16, 2011 Teamster National 401K Savings Plan [Member] Common Stock [Member]	Jul. 22, 2011 Teamster National 401K Savings Plan [Member] Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for issuance										1,200,000	2,000,000
Shares authorized												31,000
Exercise price per share	$ 0.00	$ 0.00	$ 3,600.00									$ 3,600.00
Expiration period												10 years
Recognized compensation expense	$ 3.8	$ 15.5	$ 31.2										$ 25.0
Unrecognized compensation expense								6.4	3.2
Period of recognition								2 years 8 months 12 days
Shares delivered into escrow														1,300,000
Fair value of shares delivered into escrow															$ 14.9
Common stock shares converted from preferred				5,000,000	4,600,000	6,210,000	128,000									1,600,000	1,600,000