Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Statement of Comprehensive Income [Abstract]
Profit of consolidated companies	$ 150	$ 101	$ 284	$ 244
Other comprehensive income (loss), net of tax:
Foreign currency translation, net of tax (expense)/benefit	32	(61)	36	(165)
Derivative financial instruments:
Gains (losses) deferred, net of tax (expense)/benefit	(2)	2	(4)	2
(Gains) losses reclassified to earnings, net of tax (expense)/benefit	1	1	2	2
Total Other comprehensive income (loss), net of tax	31	(58)	34	(161)
Comprehensive income (loss)	181	43	318	83
Less: Comprehensive income attributable to the noncontrolling interests	2	5	4	8
Comprehensive income (loss) attributable to Caterpillar Financial Services Corporation	$ 179	$ 38	$ 314	$ 75