Financing Activities (Details 6) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Loans Managed, Securitized or Asset-backed Financing Arrangement
Off balance-sheet managed assets	$ 312		$ 316
Servicing liability	1		$ 1
Purchase of trade receivables from Caterpillar Entities
Amortization of receivables purchase discount	$ 116	$ 123