Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Statement of Comprehensive Income [Abstract]
Profit of consolidated companies	$ 150	$ 120	$ 434	$ 364
Other comprehensive income (loss), net of tax:
Foreign currency translation, net of tax (expense)/benefit	(316)	118	(280)	(47)
Derivative financial instruments:
Gains (losses) deferred, net of tax (expense)/benefit	(1)	(2)	(5)	0
(Gains) losses reclassified to earnings, net of tax (expense)/benefit	1	1	3	3
Total Other comprehensive income (loss), net of tax	(316)	117	(282)	(44)
Comprehensive income (loss)	(166)	237	152	320
Less: Comprehensive income attributable to the noncontrolling interests	2	4	6	12
Comprehensive income (loss) attributable to Caterpillar Financial Services Corporation	$ (168)	$ 233	$ 146	$ 308