Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Statement of Comprehensive Income [Abstract]
Profit of consolidated companies	$ 541	$ 599	$ 568
Other comprehensive income (loss), net of tax (Note 8):
Foreign currency translation	330	(260)	67
Derivative financial instruments	(34)	6	(3)
Total Other comprehensive income (loss), net of tax	296	(254)	64
Comprehensive income (loss)	837	345	632
Less: Comprehensive income (loss) attributable to noncontrolling interests	3	1	0
Comprehensive income (loss) attributable to Caterpillar Financial Services Corporation	$ 834	$ 344	$ 632