GM Financial Receivables, net Summary of Finance Receivables, Net (Details) (GM Financial [Member], USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Financial Receivables [Line Items]
Pre-acquisition finance receivables, outstanding amount	$ 1,294	$ 2,162
Pre-acquisition finance receivables, carrying amount	1,174	1,958
Post-acquisition finance receivables, net of fees	28,006	9,391
Financing Receivable, Gross	29,180	11,349
Financing Receivable, Allowance for Credit Losses	(548)	(351)	(179)	(26)
Financing Receivable, net	28,632	10,998
Fair Value of GM Financial receivables, net	28,668	11,313
Allowance for financing receivables, current	427	266
Consumer Finance Receivable [Member]
Financial Receivables [Line Items]
Pre-acquisition finance receivables, outstanding amount	1,294	2,162
Pre-acquisition finance receivables, carrying amount	1,174	1,958
Post-acquisition finance receivables, net of fees	21,956	8,831
Financing Receivable, Gross	23,130	10,789
Financing Receivable, Allowance for Credit Losses	(497)	(345)
Financing Receivable, net	22,633	10,444
Commercial Finance Receivables [Member]
Financial Receivables [Line Items]
Pre-acquisition finance receivables, outstanding amount	0	0
Pre-acquisition finance receivables, carrying amount	0	0
Post-acquisition finance receivables, net of fees	6,050	560
Financing Receivable, Gross	6,050	560
Financing Receivable, Allowance for Credit Losses	(51)	(6)
Financing Receivable, net	$ 5,999	$ 554