Income Taxes	9 Months Ended
Income Taxes	Sep. 30, 2026
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes We are included in GM’s consolidated U.S. federal income tax returns and certain U.S. state returns. Net operating losses and certain tax credits generated by us have been utilized by GM; however, income tax expense and deferred tax balances are presented in our financial statements as if we filed our own tax returns in each jurisdiction. Refer to Note 3 for further information on related party taxes.

The entire disclosure for income tax.

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