Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Statement of Comprehensive Income [Abstract]
Profit of consolidated companies	$ 115	$ 104	$ 232	$ 205
Other comprehensive income (loss), net of tax:
Foreign currency translation, net of tax (expense)/benefit	161	(68)	241	105
Derivative financial instruments:
Gains (losses) deferred, net of tax (expense)/benefit	(15)	(4)	(27)	(5)
(Gains) losses reclassified to earnings, net of tax expense/(benefit)	16	4	30	6
Available-for-sale securities
Gains (losses) deferred, net of tax (expense)/benefit	1	(2)	1	(2)
(Gains) losses reclassified to earnings, net of tax expense/(benefit)	0	0	0	0
Total Other comprehensive income (loss), net of tax	163	(70)	245	104
Comprehensive income (loss)	278	34	477	309
Less: Comprehensive income (loss) attributable to the noncontrolling interests	4	(1)	6	1
Comprehensive income (loss) attributable to Caterpillar Financial Services Corporation	$ 274	$ 35	$ 471	$ 308