Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Statement of Comprehensive Income [Abstract]
Profit of consolidated companies	$ 109	$ 150	$ 348	$ 434
Other comprehensive income (loss), net of tax:
Foreign currency translation, net of tax (expense)/benefit	(206)	(316)	(472)	(280)
Derivative financial instruments:
Gains (losses) deferred, net of tax (expense)/benefit	(1)	(1)	0	(5)
(Gains) losses reclassified to earnings, net of tax expense/(benefit)	1	1	3	3
Total Other comprehensive income (loss), net of tax	(206)	(316)	(469)	(282)
Comprehensive income (loss)	(97)	(166)	(121)	152
Less: Comprehensive income (loss) attributable to the noncontrolling interests	(6)	2	(3)	6
Comprehensive income (loss) attributable to Caterpillar Financial Services Corporation	$ (91)	$ (168)	$ (118)	$ 146