Summary of Significant Accounting Policies	6 Months Ended
Jun. 30, 2015
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Basis of Presentation The condensed consolidated financial statements include our accounts and the accounts of our wholly-owned subsidiaries, including certain special-purpose financing entities utilized in secured financing transactions, which are considered variable interest entities ("VIEs"). All intercompany transactions and balances have been eliminated in consolidation. The interim period consolidated financial statements, including the notes thereto, are condensed and do not include all disclosures required by generally accepted accounting principles ("GAAP") in the United States of America. These interim period condensed consolidated financial statements should be read in conjunction with the consolidated financial statements that are included in our Annual Report on Form 10-K filed on February 4, 2015 ("Form 10-K"). Certain prior periods amounts were reclassified to conform to our current year presentation. The condensed consolidated financial statements at June 30, 2015, and for the three and six months ended June 30, 2015 and 2014, are unaudited and, in management’s opinion, include all adjustments, consisting of normal recurring adjustments, necessary for a fair presentation of the results for such interim periods. The results for interim periods are not necessarily indicative of results for a full year. Subsequent to the issuance of our condensed consolidated financial statements as of and for the six months ended June 30, 2014, we identified items not properly classified in the condensed consolidated statements of cash flows. The adjustments to previously reported amounts within the condensed consolidated statement of cash flows, which had no impact on cash and cash equivalents at June 30, 2014, had a net effect of decreasing net cash provided by operating activities by $58 million and decreasing net cash used in investing activities by $58 million, and were principally related to net funding of commercial finance receivables. Segment Information We offer substantially similar products and services throughout many different regions, subject to local regulations and market conditions. We evaluate our business in two operating segments: North America (the "North America Segment") and international (the "International Segment"). The North America Segment includes our operations in the U.S. and Canada. The International Segment includes our operations in all other countries. For additional financial information regarding our business segments, see Note 13 - "Segment Reporting." Related Party Transactions We are the wholly-owned captive finance subsidiary of General Motors Company ("GM"). We offer loan and lease finance products through GM-franchised dealers to consumers purchasing new and certain used vehicles manufactured by GM and make commercial loans directly to GM-franchised dealers and their affiliates. Under subvention programs, GM makes cash payments to us for offering incentivized rates and structures on consumer loan and lease finance products. In addition, GM makes payments to us to cover certain interest payments on commercial loans. At June 30, 2015 and December 31, 2014, we had related party receivables from GM in the amount of $588 million and $384 million, primarily related to subvention. At June 30, 2015 and December 31, 2014 we had $176 million in commercial loans outstanding to dealers that are consolidated by GM. Prior to January 1, 2015, we provided financing to certain GM subsidiaries through factoring and other wholesale financing arrangements. At December 31, 2014, $289 million was outstanding under such arrangements, and was included in commercial finance receivables. No amounts were outstanding at June 30, 2015. At June 30, 2015 and December 31, 2014, we had $429 million and $433 million of related party payables due to GM, primarily for commercial finance receivables originated but not yet funded. These payables typically settle within 30 days. We have a tax sharing agreement with GM for our U.S. operations. Under our tax sharing arrangement with GM, payments related to our U.S. operations for the tax years 2012 through 2014 were deferred for four years from their original due date. At June 30, 2015 and December 31, 2014, $636 million was due to GM under the related party tax sharing agreement. We have a Support Agreement with GM (the “Support Agreement”), which provides that, if our earning assets leverage at the end of any calendar quarter is higher than thresholds set in the Support Agreement, we may require GM to provide funding sufficient to bring our earning assets leverage to within the appropriate threshold. In determining our earning assets leverage (net earning assets divided by adjusted equity) under the Support Agreement, net earning assets means our finance receivables, net, plus leased vehicles, net, and adjusted equity means our equity, net of goodwill and inclusive of outstanding junior subordinated debt, as each may be adjusted for derivative accounting from time to time. At June 30, 2015, our earning assets leverage ratio was 7.5, which is below the applicable ratio of 8.0. Additionally, the Support Agreement provides that GM will own all of our outstanding voting shares as long as we have any unsecured debt securities outstanding and that GM will use its commercially reasonable efforts to ensure that we will continue to be designated as a subsidiary borrower on $4.0 billion under GM’s corporate revolving credit facilities. GM also agreed to certain provisions intended to ensure that we maintain adequate access to liquidity. Pursuant to these provisions, GM provided us with a $1.0 billion unsecured intercompany revolving credit facility (the “Junior Subordinated Revolving Credit Facility”). There were no advances outstanding under the Junior Subordinated Revolving Credit Facility at June 30, 2015 or December 31, 2014. Accounting Standards Not Yet Adopted In May 2014 the Financial Accounting Standards Board issued ASU 2014-09, “Revenue Recognition - Revenue from Contracts with Customers” ("ASU 2014-09") that requires companies to recognize revenue when a customer obtains control rather than when companies have transferred substantially all risks and rewards of a good or service. This update was originally effective for annual reporting periods beginning on or after December 15, 2016 and interim periods therein and requires expanded disclosures. In July 2015 the FASB issued a deferral of ASU 2014-09 of one year making it effective for annual reporting periods beginning on or after December 15, 2017 while also providing for early adoption but not before the original effective date. We are currently assessing the impact the adoption of ASU 2014-09 will have on our consolidated financial statements. In April 2015 the Financial Accounting Standards Board issued ASU 2015-03, “Interest - Imputation of Interest” ("ASU 2015-03") that requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. This update is effective for annual reporting periods beginning on or after December 15, 2015 and interim periods within fiscal years beginning after December 15, 2016. We are currently assessing the impact that the adoption of ASU 2015-03 will have on our consolidated financial statements.

Summary of Significant Accounting Policies

Basis of Presentation

The condensed consolidated financial statements include our accounts and the accounts of our wholly-owned subsidiaries, including certain special-purpose financing entities utilized in secured financing transactions, which are considered variable interest entities ("VIEs"). All intercompany transactions and balances have been eliminated in consolidation.

The interim period consolidated financial statements, including the notes thereto, are condensed and do not include all disclosures required by generally accepted accounting principles ("GAAP") in the United States of America. These interim period condensed consolidated financial statements should be read in conjunction with the consolidated financial statements that are included in our Annual Report on Form 10-K filed on February 4, 2015 ("Form 10-K"). Certain prior periods amounts were reclassified to conform to our current year presentation.

The condensed consolidated financial statements at June 30, 2015, and for the three and six months ended June 30, 2015 and 2014, are unaudited and, in management’s opinion, include all adjustments, consisting of normal recurring adjustments, necessary for a fair presentation of the results for such interim periods. The results for interim periods are not necessarily indicative of results for a full year.

Subsequent to the issuance of our condensed consolidated financial statements as of and for the six months ended June 30, 2014, we identified items not properly classified in the condensed consolidated statements of cash flows. The adjustments to previously reported amounts within the condensed consolidated statement of cash flows, which had no impact on cash and cash equivalents at June 30, 2014, had a net effect of decreasing net cash provided by operating activities by $58 million and decreasing net cash used in investing activities by $58 million, and were principally related to net funding of commercial finance receivables.

Segment Information

We offer substantially similar products and services throughout many different regions, subject to local regulations and market conditions. We evaluate our business in two operating segments: North America (the "North America Segment") and international (the "International Segment"). The North America Segment includes our operations in the U.S. and Canada. The International Segment includes our operations in all other countries. For additional financial information regarding our business segments, see Note 13 - "Segment Reporting."

Related Party Transactions

We are the wholly-owned captive finance subsidiary of General Motors Company ("GM"). We offer loan and lease finance products through GM-franchised dealers to consumers purchasing new and certain used vehicles manufactured by GM and make commercial loans directly to GM-franchised dealers and their affiliates. Under subvention programs, GM makes cash payments to us for offering incentivized rates and structures on consumer loan and lease finance products. In addition, GM makes payments to us to cover certain interest payments on commercial loans. At June 30, 2015 and December 31, 2014, we had related party receivables from GM in the amount of $588 million and $384 million, primarily related to subvention.

At June 30, 2015 and December 31, 2014 we had $176 million in commercial loans outstanding to dealers that are consolidated by GM. Prior to January 1, 2015, we provided financing to certain GM subsidiaries through factoring and other wholesale financing arrangements. At December 31, 2014, $289 million was outstanding under such arrangements, and was included in commercial finance receivables. No amounts were outstanding at June 30, 2015. At June 30, 2015 and December 31, 2014, we had $429 million and $433 million of related party payables due to GM, primarily for commercial finance receivables originated but not yet funded. These payables typically settle within 30 days.

We have a tax sharing agreement with GM for our U.S. operations. Under our tax sharing arrangement with GM, payments related to our U.S. operations for the tax years 2012 through 2014 were deferred for four years from their original due date. At June 30, 2015 and December 31, 2014, $636 million was due to GM under the related party tax sharing agreement.

We have a Support Agreement with GM (the “Support Agreement”), which provides that, if our earning assets leverage at the end of any calendar quarter is higher than thresholds set in the Support Agreement, we may require GM to provide funding sufficient to bring our earning assets leverage to within the appropriate threshold. In determining our earning assets leverage (net earning assets divided by adjusted equity) under the Support Agreement, net earning assets means our finance receivables, net, plus leased vehicles, net, and adjusted equity means our equity, net of goodwill and inclusive of outstanding junior subordinated debt, as each may be adjusted for derivative accounting from time to time. At June 30, 2015, our earning assets leverage ratio was 7.5, which is below the applicable ratio of 8.0.

Additionally, the Support Agreement provides that GM will own all of our outstanding voting shares as long as we have any unsecured debt securities outstanding and that GM will use its commercially reasonable efforts to ensure that we will continue to be designated as a subsidiary borrower on $4.0 billion under GM’s corporate revolving credit facilities. GM also agreed to certain provisions intended to ensure that we maintain adequate access to liquidity. Pursuant to these provisions, GM provided us with a $1.0 billion unsecured intercompany revolving credit facility (the “Junior Subordinated Revolving Credit Facility”). There were no advances outstanding under the Junior Subordinated Revolving Credit Facility at June 30, 2015 or December 31, 2014.

Accounting Standards Not Yet Adopted

In May 2014 the Financial Accounting Standards Board issued ASU 2014-09, “Revenue Recognition - Revenue from Contracts with Customers” ("ASU 2014-09") that requires companies to recognize revenue when a customer obtains control rather than when companies have transferred substantially all risks and rewards of a good or service. This update was originally effective for annual reporting periods beginning on or after December 15, 2016 and interim periods therein and requires expanded disclosures. In July 2015 the FASB issued a deferral of ASU 2014-09 of one year making it effective for annual reporting periods beginning on or after December 15, 2017 while also providing for early adoption but not before the original effective date. We are currently assessing the impact the adoption of ASU 2014-09 will have on our consolidated financial statements.

In April 2015 the Financial Accounting Standards Board issued ASU 2015-03, “Interest - Imputation of Interest” ("ASU 2015-03") that requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. This update is effective for annual reporting periods beginning on or after December 15, 2015 and interim periods within fiscal years beginning after December 15, 2016. We are currently assessing the impact that the adoption of ASU 2015-03 will have on our consolidated financial statements.