Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Statement of Comprehensive Income [Abstract]
Profit of consolidated companies	$ 544	$ 443	$ 393
Other comprehensive income (loss), net of tax:
Foreign currency translation, net of tax (expense)/benefit	(59)	62	(105)
Derivative financial instruments:
Gains (losses) deferred, net of tax (expense)/benefit	(1)	1	(1)
(Gains) losses reclassified to earnings, net of tax (expense)/benefit	4	(3)	9
Total Other comprehensive income (loss), net of tax	(56)	60	(97)
Comprehensive income (loss)	488	503	296
Less: Comprehensive income attributable to the noncontrolling interests	17	11	12
Comprehensive income (loss) attributable to Caterpillar Financial Services Corporation	$ 471	$ 492	$ 284