Financing Activities (Details 6) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Loans Managed, Securitized or Asset-backed Financing Arrangement
Off balance-sheet managed assets	$ 308		$ 308		$ 322
Servicing liability	1		1		2
Purchase of trade receivables from Caterpillar Entities
Amortization of receivables purchase discount	$ 65	$ 62	$ 123	$ 120