Divestitures (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended		1 Months Ended	3 Months Ended			12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	May 31, 2014 Truckload Management Services [Member]	Mar. 31, 2014 Paper business [Member]	Dec. 31, 2013 Paper business [Member]	Jun. 30, 2013 Paper business [Member]	Dec. 31, 2013 Paper business [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale of businesses	$ 15	$ 11	$ 15	$ 11	$ 15
Gain (loss) on disposal	(2)	(23)	0	(23)	(1)	1	(2)	(23)	(25)
Revenues	7	144	17	308
Income from operations	0	2	0	7
Loss on disposal	(2)	(23)	0	(23)	(1)	1	(2)	(23)	(25)
Net Loss Before Income Taxes	(2)	(21)	0	(16)
Income tax expense	2	2	2	4
Loss From Discontinued Operations, Net of Tax	$ (4)	$ (23)	$ (2)	$ (20)