Consolidated Statements of Changes in Stockholder's Equity (USD $) In Millions, unless otherwise specified	Total	Common stock	Additional paid-in capital	Retained earnings	Accumulated other comprehensive income/(loss)	Noncontrolling interests
Balance at Dec. 31, 2012	$ 3,723	$ 745	$ 2	$ 2,694	$ 176	$ 106
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Profit of consolidated companies	258			252		6
Dividend paid to Caterpillar	(100)			(100)
Foreign currency translation, net of tax	(165)				(167)	2
Derivative financial instruments, net of tax	4				4
Balance at Jun. 30, 2013	3,720	745	2	2,846	13	114
Balance at Dec. 31, 2013	4,011	745	2	3,024	117	123
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Profit of consolidated companies	287			282		5
Dividend paid to Caterpillar	(200)			(200)
Foreign currency translation, net of tax	36				37	(1)
Derivative financial instruments, net of tax	(2)				(2)
Balance at Jun. 30, 2014	$ 4,132	$ 745	$ 2	$ 3,106	$ 152	$ 127