Variable Interest Entities - VIEs of Which We Are Not the Primary Beneficiary (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2013 Getrag Ford Transmissions GmbH [Member]	Jun. 30, 2013 Automotive [Member] Variable Interest Entity, Primary Beneficiary [Member] Getrag Deutsche Venture GmbH and Co KG [Member]	Jun. 30, 2013 Automotive [Member] Variable Interest Entity, Not Primary Beneficiary [Member]	Dec. 31, 2012 Automotive [Member] Variable Interest Entity, Not Primary Beneficiary [Member]	Jun. 30, 2013 Financial Services [Member] Variable Interest Entity, Not Primary Beneficiary [Member]	Dec. 31, 2012 Financial Services [Member] Variable Interest Entity, Not Primary Beneficiary [Member]	Jun. 30, 2013 Investments [Member] Automotive [Member] Variable Interest Entity, Not Primary Beneficiary [Member]	Dec. 31, 2012 Investments [Member] Automotive [Member] Variable Interest Entity, Not Primary Beneficiary [Member]	Jun. 30, 2013 Supplier Arrangements [Member] Automotive [Member] Variable Interest Entity, Not Primary Beneficiary [Member]	Dec. 31, 2012 Supplier Arrangements [Member] Automotive [Member] Variable Interest Entity, Not Primary Beneficiary [Member]
Percent ownership of VIE	50.00%	50.00%
Total maximum exposure			$ 247	$ 247	$ 65	$ 71	$ 240	$ 242	$ 7	$ 5
Total change in maximum exposure			$ 0				$ (2)		$ 2