Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Profit of consolidated companies	$ 432	$ 325	$ 594
Other comprehensive income (loss), net of tax:
Foreign currency translation, net of tax (expense)/benefit	11	(309)	414
Derivative financial instruments:
Gains (losses) deferred, net of tax (expense)/benefit	17	98	(49)
(Gains) losses reclassified to earnings, net of tax expense/(benefit)	(48)	(129)	45
Total Other comprehensive income (loss), net of tax	(20)	(340)	410
Comprehensive income (loss)	412	(15)	1,004
Less: Comprehensive income (loss) attributable to the noncontrolling interests	19	13	15
Comprehensive income (loss) attributable to Caterpillar Financial Services Corporation	$ 393	$ (28)	$ 989