Consolidated Statements of Changes in Shareholder'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, 2015	$ 2,975	$ 745	$ 2	$ 2,999	$ (897)	$ 126
Increase (Decrease) in Shareholders' Equity [Roll Forward]
Profit of consolidated companies	390			384		6
Dividend paid to Caterpillar	(275)			(275)
Foreign currency translation, net of tax	(104)				(97)	(7)
Derivative financial instruments, net of tax	(1)				(1)
Balance at Dec. 31, 2016	2,985	745	2	3,108	(995)	125
Increase (Decrease) in Shareholders' Equity [Roll Forward]
Profit of consolidated companies	594			586		8
Dividend paid to Caterpillar	(725)			(725)
Foreign currency translation, net of tax	414				407	7
Derivative financial instruments, net of tax	(4)				(4)
Balance at Dec. 31, 2017	3,264	745	2	2,969	(592)	140
Increase (Decrease) in Shareholders' Equity [Roll Forward]
Profit of consolidated companies	325			305		20
Dividend paid to Caterpillar	(400)			(400)
Foreign currency translation, net of tax	(309)				(302)	(7)
Derivative financial instruments, net of tax	(31)				(31)
Balance at Dec. 31, 2018	$ 2,849	$ 745	$ 2	$ 2,874	$ (925)	$ 153