Consolidated Statements of Changes in Stockholder's Equity - USD ($) $ in Millions	Total	Common stock	Additional paid-in capital	Retained earnings	Accumulated other comprehensive income/(loss)	Noncontrolling interests
Balance at Dec. 31, 2013	$ 3,991	$ 745	$ 2	$ 3,004	$ 117	$ 123
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Profit of consolidated companies	284			279		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	4,109	745	2	3,083	152	127
Balance at Dec. 31, 2014	3,654	745	2	3,139	(364)	132
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Profit of consolidated companies	239			237		2
Dividend paid to Caterpillar	(250)			(250)
Foreign currency translation, net of tax	(266)				(267)	1
Derivative financial instruments, net of tax	3				3
Balance at Jun. 30, 2015	$ 3,380	$ 745	$ 2	$ 3,126	$ (628)	$ 135