Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement of Comprehensive Income [Abstract]
Profit of consolidated companies	$ 64	$ 84	$ 158	$ 188
Other comprehensive income (loss), net of tax:
Foreign currency translation, net of tax (expense)/benefit	125	18	(182)	33
Derivative financial instruments:
Gains (losses) deferred, net of tax (expense)/benefit	(35)	(19)	32	(22)
(Gains) losses reclassified to earnings, net of tax expense/(benefit)	42	(3)	(19)	(14)
Total Other comprehensive income (loss), net of tax	132	(4)	(169)	(3)
Comprehensive income (loss)	196	80	(11)	185
Less: Comprehensive income (loss) attributable to the noncontrolling interests	4	3	7	11
Comprehensive income (loss) attributable to Caterpillar Financial Services Corporation	$ 192	$ 77	$ (18)	$ 174