Assets and Liabilities of Businesses Held For Sale and Discontinued Operations (Other Financial Services and Industrial) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended							12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014 Trailer Services [Member]	Dec. 31, 2013 Trailer Services [Member]	Mar. 31, 2013 Trailer Services [Member]	Mar. 31, 2014 Consumer Russia [Member]	Mar. 31, 2013 Consumer Russia [Member]	Dec. 31, 2013 Consumer Russia [Member]
Financial Information For Discontinued Operations [Line Items]
Revenues from discontinued operations	$ 29	$ 54	$ 1		$ 93	$ 24	$ 67
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent	12	(120)	13		14	1	(11)
Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity Insignificant Amount	an insignificant amount
Discontinued Operation, Provision for Loss (Gain) on Disposal, Net of Tax								170
Gain (loss) on disposal of discontinued operations	19	(102)				4
Proceeds from Divestiture of Businesses, Net of Cash Divested	232	0		528		232
Benefit (provision) for income taxes	$ (516)	$ (508)