Acquistions and Divestitures (Divestitures) (Details) - USD ($) $ in Millions		12 Months Ended
Dec. 12, 2012	Dec. 31, 2012
Simply Wheelz, LLC
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Base sales price	$ 16
Assets (Liabilities), Net	4
Range of possible loss, maximum	$ 17
Recognition period	3 years
Estimate of possible loss, present value	$ 16
Loss from disposal of discontinued operations		$ 31
Commitment to Lend \| Simply Wheelz, LLC
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Other commitment, term	5 years
Commitment to Lend \| Advantage
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Other commitment, term	2 years
Commitment to Lend \| Maximum \| Simply Wheelz, LLC
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Other Commitment	$ 45
Other Commitment, rate	13.00%
Commitment to Lend \| Weighted Average \| Simply Wheelz, LLC
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Other commitment, term	2 years 6 months

Disposal Group, Including Discontinued Operation, Assets (Liabilities), Net

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Disposal Group, Including Discontinued Operation, Sales Price, Base

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Other Commitment, Rate

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Other Commitment, Term

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- Definition

Amount before tax of gain (loss) not previously recognized resulting from the disposal of a discontinued operation.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

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Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions.

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