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
Beginning balance at Dec. 31, 2022	$ 2,963	$ 745	$ 2	$ 3,109	$ (1,047)	$ 154
Increase (Decrease) in Shareholder's Equity [Roll Forward]
Profit of consolidated companies	402			397		5
Dividend paid to Caterpillar	(155)			(75)		(80)
Foreign currency translation, net of tax	(99)				(93)	(6)
Derivative financial instruments, net of tax	(4)				(4)
Ending balance at Sep. 30, 2023	3,107	745	2	3,431	(1,144)	73
Beginning balance at Jun. 30, 2023	3,195	745	2	3,333	(1,038)	153
Increase (Decrease) in Shareholder's Equity [Roll Forward]
Profit of consolidated companies	98			98
Dividend paid to Caterpillar	(80)					(80)
Foreign currency translation, net of tax	(102)				(102)
Derivative financial instruments, net of tax	(4)				(4)
Ending balance at Sep. 30, 2023	3,107	745	2	3,431	(1,144)	73
Beginning balance at Dec. 31, 2023	3,170	745	2	3,327	(978)	74
Increase (Decrease) in Shareholder's Equity [Roll Forward]
Profit of consolidated companies	242			241		1
Foreign currency translation, net of tax	74				73	1
Derivative financial instruments, net of tax	(11)				(11)
Ending balance at Sep. 30, 2024	3,475	745	2	3,568	(916)	76
Beginning balance at Jun. 30, 2024	3,171	745	2	3,431	(1,082)	75
Increase (Decrease) in Shareholder's Equity [Roll Forward]
Profit of consolidated companies	137			137
Foreign currency translation, net of tax	174				173	1
Derivative financial instruments, net of tax	(7)				(7)
Ending balance at Sep. 30, 2024	$ 3,475	$ 745	$ 2	$ 3,568	$ (916)	$ 76