Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

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Amount of right to receive cash collateral under master netting arrangements that have not been offset against derivative liabilities.

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Amount of right to receive securities collateral under master netting arrangements that have not been offset against derivative liabilities.

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Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

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Nominal or face amount used to calculate payment on derivative.

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Derivative Financial Instruments - Notional Amounts for Derivative Financial Instruments (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Automotive \| Stellantis N.V. \| Common Stock
Derivative [Line Items]
Number of shares called by warrants	69.2		69.2
Automotive \| Stellantis warrants, formerly known as PSA warrants \| Stellantis N.V.
Derivative [Line Items]
Warrants outstanding (in shares)	39.7		39.7
Automotive \| Not Designated as Hedges
Derivative [Line Items]
Notional	$ 6,235		$ 6,235		$ 5,822
Automotive \| Not Designated as Hedges \| PSA Group \| Interest Income and Other Non-Operating Income, Net
Derivative [Line Items]
Gains (losses) on derivative instruments	(221)	$ 154	(419)	$ 364
Automotive \| Not Designated as Hedges \| Foreign currency \| Fair Value Level 2
Derivative [Line Items]
Notional	4,948		4,948		4,228
Automotive \| Not Designated as Hedges \| Commodity \| Fair Value Level 2
Derivative [Line Items]
Notional	1,245		1,245		1,549
Automotive \| Not Designated as Hedges \| Stellantis warrants, formerly known as PSA warrants \| Fair Value Level 2
Derivative [Line Items]
Notional	42		42		45
Automotive \| Not Designated as Hedges \| Fair Value Hedges \| Stellantis warrants, formerly known as PSA warrants \| Fair Value Level 2
Derivative [Line Items]
Fair Value of Assets	1,000		1,000		1,400
GM Financial
Derivative [Line Items]
Notional	139,523		139,523		133,971
Fair Value of Assets	1,560		1,560		1,017
Fair Value of Liabilities	2,368		2,368		691
Collateral	272		272		376
Collateral available for netting	864		864
GM Financial \| Designated as Hedges \| Fair Value Hedges \| Interest rate swaps \| Fair Value Level 2
Derivative [Line Items]
Notional	21,600		21,600		15,058
Fair Value of Assets	2		2		74
Fair Value of Liabilities	536		536		88
GM Financial \| Designated as Hedges \| Fair Value Hedges \| Foreign currency swaps \| Fair Value Level 2
Derivative [Line Items]
Notional	0		0		682
Fair Value of Assets	0		0		0
Fair Value of Liabilities	0		0		59
GM Financial \| Designated as Hedges \| Cash Flow Hedges \| Interest rate swaps \| Fair Value Level 2
Derivative [Line Items]
Notional	806		806		611
Fair Value of Assets	25		25		12
Fair Value of Liabilities	0		0		4
GM Financial \| Designated as Hedges \| Cash Flow Hedges \| Foreign currency swaps \| Fair Value Level 2
Derivative [Line Items]
Notional	7,444		7,444		7,419
Fair Value of Assets	7		7		85
Fair Value of Liabilities	649		649		201
GM Financial \| Not Designated as Hedges \| Foreign currency \| Fair Value Level 2
Derivative [Line Items]
Notional	0		0		148
Fair Value of Assets	0		0		0
Fair Value of Liabilities	0		0		0
GM Financial \| Not Designated as Hedges \| Interest rate contracts \| Fair Value Level 2
Derivative [Line Items]
Notional	109,673		109,673		110,053
Fair Value of Assets	1,526		1,526		846
Fair Value of Liabilities	$ 1,183		$ 1,183		$ 339