Finance Receivables Allowance for Loan Losses (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Financing Receivable, Allowance for Credit Losses	$ 23
Provision for Loan, Lease, and Other Losses	475
Financing Receivable, Allowance for Credit Losses	27
Post-Acquisition Portfolio | Consumer Finance Receivables
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Financing Receivable, Allowance for Credit Losses	345
Provision for Loan, Lease, and Other Losses	432
Financing Receivable, Allowance for Credit Losses, Write-downs	(638)
Financing Receivable, Allowance for Credit Losses, Recovery	356
Financing Receivable, Allowance for Credit Losses	497
Financing Receivable, Allowance for Credit Losses, Foreign Currency Translation	2
Post-Acquisition Portfolio | North America Segment [Member] | Consumer Finance Receivables
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Financing Receivable, Allowance for Credit Losses	345	179	26
Provision for Loan, Lease, and Other Losses	380	298	178
Financing Receivable, Allowance for Credit Losses, Write-downs	(584)	(304)	(66)
Financing Receivable, Allowance for Credit Losses, Recovery	327	172	41
Financing Receivable, Allowance for Credit Losses	468	345	179
Financing Receivable, Allowance for Credit Losses, Foreign Currency Translation	0	0	0
Post-Acquisition Portfolio | International Segment [Member] | Consumer Finance Receivables
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Provision for Loan, Lease, and Other Losses	52
Financing Receivable, Allowance for Credit Losses, Write-downs	(54)
Financing Receivable, Allowance for Credit Losses, Recovery	29
Financing Receivable, Allowance for Credit Losses	29
Financing Receivable, Allowance for Credit Losses, Foreign Currency Translation	$ 2