Finance Receivables, Net Credit Quality (Details) (GM Financial [Member], USD $) In Millions, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
GM Financial [Member]
Financing Receivable, Recorded Investment [Line Items]
FICO Scores Less Than 540	$ 2,371	$ 2,133
FICO Scores 540 to 599	4,356	4,167
FICO Scores 600 to 659	2,598	2,624
FICO Scores Greater Than 660	676	756
Financing Receivable	$ 10,001	$ 9,680

The amount of the recorded investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, accounts receivable (with terms exceeding one year), notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Receivable

-URI http://asc.fasb.org/extlink&oid=6953735

Name:	us-gaap_FinancingReceivable
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant