Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Statement of Comprehensive Income [Abstract]
Profit of consolidated companies	$ 130	$ 170
Other comprehensive income (loss), net of tax (Note 5):
Foreign currency translation	88	(121)
Derivative financial instruments	(12)	(2)
Total Other comprehensive income (loss), net of tax	76	(123)
Comprehensive income (loss)	206	47
Less: Comprehensive income (loss) attributable to noncontrolling interests	0	1
Comprehensive income (loss) attributable to Caterpillar Financial Services Corporation	$ 206	$ 46