Ally has the right to defer payments of interest for a period not exceeding consecutive quarters of

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Debt redeemed during period, number of shares

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Distributions will be payable at an annual rate equal to three-month London interbank offer rate plus:

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Percent of principal debt, plus accrued and unpaid interest is the redemption price if Ally redeems the Series 2 TRUPS at anytime on or before February 15, 2040.

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Trust preferred securities

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The cash outflow to reacquire preferred stocks issued by a business trust or other special purpose entity, mainly established by a bank holding entity, to third party investors. The trust's assets are deeply subordinated debentures of the bank holding entity. Most trust preferred securities are subject to a mandatory redemption upon the repayment of the debentures.

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-Section 45
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The per share liquidation preference (or restrictions) of nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) that has a preference in involuntary liquidation considerably in excess of the par or stated value of the shares. The liquidation preference is the difference between the preference in liquidation and the par or stated values of the share.

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Proceeds from issuance of capital stock which provides for a specific dividend that is paid to the shareholders before any dividends to common stockholders and which takes precedence over common stockholders in the event of liquidation.

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Debt (Narrative - Trust Preferred Securities) (Details) $ / shares in Units, $ in Millions						9 Months Ended
	Oct. 15, 2021 USD ($) shares	Jul. 02, 2021 USD ($) shares	Jun. 02, 2021 USD ($)	May 24, 2021 USD ($) shares	Apr. 22, 2021 USD ($)	Sep. 30, 2021 USD ($) quarter $ / shares	Sep. 30, 2020 USD ($)	Jun. 30, 2021 $ / shares	Apr. 30, 2021 $ / shares	Dec. 31, 2020 USD ($)
Debt Instrument [Line Items]
Trust preferred securities						$ 188				$ 2,600
Liquidation preference (in dollars per share) \| $ / shares						$ 25
Distribution payable in addition to annual rate equal to three-month London interbank offer rate, percentage						5.785%
Period of consecutive quarters for which Ally has right to defer interest payments, maximum \| quarter						20
Redemption price, percentage of principal debt, plus accrued and unpaid interest						100.00%
Preferred stock issuance						$ 2,324	$ 0
Trust preferred securities redemption						$ 2,513	$ 0
Series B Preferred Stock
Debt Instrument [Line Items]
Liquidation preference (in dollars per share) \| $ / shares						$ 1,000			$ 1,000
Preferred stock issuance					$ 1,350
Trust Preferred Securities Subject to Mandatory Redemption
Debt Instrument [Line Items]
Trust preferred securities redemption		$ 1,040		$ 1,400
Debt redeemed during period, number of shares \| shares		41,600,000		56,000,000
Trust Preferred Securities Subject to Mandatory Redemption \| Subsequent event
Debt Instrument [Line Items]
Trust preferred securities redemption	$ 191
Debt redeemed during period, number of shares \| shares	7,650,000
Series C Preferred Stock
Debt Instrument [Line Items]
Liquidation preference (in dollars per share) \| $ / shares						$ 1,000		$ 1,000
Preferred stock issuance			$ 1,000
Variable Income Interest Rate
Debt Instrument [Line Items]
Trust preferred securities						$ 191				$ 2,600