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, 2014	$ 3,654	$ 745	$ 2	$ 3,139	$ (364)	$ 132
Increase (Decrease) in Shareholders' Equity [Roll Forward]
Profit of consolidated companies	461			460		1
Dividend paid to Caterpillar	(600)			(600)
Foreign currency translation, net of tax	(545)				(538)	(7)
Derivative financial instruments, net of tax	5				5
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