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STOCKHOLDERS' EQUITY - Narrative (Details) - USD ($) |  |  |  |  |  |  |  |  |  | 1 Months Ended | 3 Months Ended | 4 Months Ended | 12 Months Ended |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 16, 2022 | Dec. 16, 2022 | Dec. 15, 2022 | Nov. 02, 2022 | Mar. 30, 2022 | Mar. 30, 2022 | Mar. 29, 2022 | Jan. 12, 2022 | May 05, 2021 | May 04, 2021 | Dec. 23, 2020 | Feb. 15, 2024 | Oct. 31, 2023 | Dec. 16, 2022 | Mar. 30, 2022 | May 05, 2021 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Feb. 16, 2024 | Feb. 15, 2023 | Nov. 04, 2022 | Nov. 03, 2022 | Jan. 11, 2022 | Feb. 18, 2021 | Dec. 22, 2020 | Jul. 30, 2019
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash dividend declared (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.885 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends |  |  |  |  |  |  |  |  |  |  |  |  | $ 108,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share repurchase authorization |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 3,000,000,000 |  | $ 3,000,000,000
Shares received (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 |  |  |  |  |  |  |  |
Increase in treasury stock from share repurchases |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,586,000,000 | $ 2,096,000,000 | $ 79,000,000 |  |  |  |  |  |  |  |
Remaining authorized amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,000,000,000 |  |
Common shares acquired in connection with employee stock plans (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 200,000 | 200,000 | 200,000 |  |  |  |  |  |  |  |
Common shares acquired in connection with employee stock plans, amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 73,000,000 | $ 96,000,000 | $ 79,000,000 |  |  |  |  |  |  |  |
Aggregate statutory capital and surplus in our state regulated insurance subsidiaries |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 12,200,000,000 | 11,300,000,000 |  |  |  |  |  |  |  |  |
Aggregate minimum regulatory requirements of statutory capital and surplus |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 9,800,000,000 | 8,400,000,000 |  |  |  |  |  |  |  |  |
Ordinary dividends that may be paid to parent company |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,100,000,000 |  |  |  |  |  |  |  |  |  |
Actual dividends paid to parent company |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,800,000,000 | $ 1,300,000,000 | $ 1,600,000,000 |  |  |  |  |  |  |  |
Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash dividend declared (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  | $ 0.885 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2021 Share Repurchase Authorization |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share repurchase authorization |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 3,000,000,000 |  |  |  |  |  |
Remaining authorized amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,000,000,000 |  |  |  |  |  |
2023 Share Repurchase Authorization |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share repurchase authorization |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 3,000,000,000 |  |  |  |  |  |
Shares received (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,100,000 |  |  |  |  |  |  |  |  |  |
Increase in treasury stock from share repurchases |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,500,000,000 |  |  |  |  |  |  |  |  |  |
Stock repurchase average price (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 482.27 |  |  |  |  |  |  |  |  |  |
2023 Share Repurchase Authorization | Forecast |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Remaining authorized amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 824,000,000 |  |  |  |  |  |  |
2024 Share Repurchase Authorization | Forecast |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share repurchase authorization |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 3,000,000,000 |  |  |  |  |  |  |
December 2020 ASR |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accelerated share repurchase agreement amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,750,000,000 |
Accelerated share repurchase payment |  |  |  |  |  |  |  |  |  |  | $ 1,750,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares received (in shares) |  |  |  |  |  |  |  |  |  |  | 3,800,000 |  |  |  |  | 4,400,000 |  |  |  |  |  |  |  |  |  |  |
Increase in treasury stock from share repurchases |  |  |  |  |  |  |  |  |  |  | $ 1,500,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Decrease in capital in excess of par value |  |  |  |  |  |  |  |  |  |  | 262,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reclassification from capital in excess of par value to treasury stock |  |  |  |  |  |  |  |  | $ 262,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
December 2020 ASR | Citi |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accelerated share repurchase payment |  |  |  |  |  |  |  |  |  |  | $ 875,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares received (in shares) |  |  |  |  |  |  |  |  |  | 300,000 | 1,900,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Average daily volume weighted-average share price of common stock during term of agreement (in dollars per share) |  |  |  |  |  |  |  |  |  | $ 400.07 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
December 2020 ASR | JPM |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accelerated share repurchase payment |  |  |  |  |  |  |  |  |  |  | $ 875,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares received (in shares) |  |  |  |  |  |  |  |  | 300,000 |  | 1,900,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Average daily volume weighted-average share price of common stock during term of agreement (in dollars per share) |  |  |  |  |  |  |  |  | $ 401.49 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
January 2022 ASR |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accelerated share repurchase agreement amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,000,000,000 |  |  |
Accelerated share repurchase payment |  |  |  |  |  |  |  | $ 1,000,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares received (in shares) |  |  |  |  |  |  |  | 2,200,000 |  |  |  |  |  |  | 2,400,000 |  |  |  |  |  |  |  |  |  |  |  |
Increase in treasury stock from share repurchases |  |  |  |  |  |  |  | $ 850,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Decrease in capital in excess of par value |  |  |  |  |  |  |  | 150,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reclassification from capital in excess of par value to treasury stock |  |  |  |  |  | $ 150,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
January 2022 ASR | Mizuho Markets Americas LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accelerated share repurchase payment |  |  |  |  |  |  |  | $ 500,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares received (in shares) |  |  |  |  |  |  | 100,000 | 1,080,000.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Average daily volume weighted-average share price of common stock during term of agreement (in dollars per share) |  |  |  |  |  |  | $ 410.96 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
January 2022 ASR | Wells Fargo Bank |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accelerated share repurchase payment |  |  |  |  |  |  |  | $ 500,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares received (in shares) |  |  |  |  | 100,000 |  |  | 1,080,000.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Average daily volume weighted-average share price of common stock during term of agreement (in dollars per share) |  |  |  |  | $ 411.66 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
November 2022 ASR |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accelerated share repurchase agreement amount |  |  |  | $ 1,000,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accelerated share repurchase payment |  |  |  | $ 1,000,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares received (in shares) |  |  |  | 1,500,000 |  |  |  |  |  |  |  |  |  | 1,800,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Increase in treasury stock from share repurchases |  |  |  | $ 850,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Decrease in capital in excess of par value |  |  |  | $ 150,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reclassification from capital in excess of par value to treasury stock |  | $ 150,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
November 2022 ASR | Mizuho Markets Americas LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accelerated share repurchase payment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 500,000,000 |  |  |  |  |
Shares received (in shares) | 177,000 |  |  | 760,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Average daily volume weighted-average share price of common stock during term of agreement (in dollars per share) | $ 533.87 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
November 2022 ASR | Goldman Sachs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accelerated share repurchase payment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 500,000,000 |  |  |  |
Shares received (in shares) |  |  | 177,000 | 760,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Average daily volume weighted-average share price of common stock during term of agreement (in dollars per share) |  |  | $ 534.16 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Amount of dividends paid to our parent company without prior approval by state regulatory authorities + References No definition available. + Details
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- Definition Number of shares of common stock that were repurchased in the administration of our employee share-based compensation plans. Under the terms of these plans, we accept shares of common stock from option holders if they elect to surrender previously-owned shares upon exercise of the option to cover the exercise price of the options or, in the case of restricted shares of common stock, the withholding of shares to satisfy tax withholding obligations associated with the vesting of such shares. + References No definition available. + Details
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- Definition Cost of common stock that were repurchased in the administration of our employee share-based compensation plans. Under the terms of these plans, we accept shares of common stock from option holders if they elect to surrender previously-owned shares upon exercise of the option to cover the exercise price of the options or, in the case of restricted shares of common stock, the withholding of shares to satisfy tax withholding obligations associated with the vesting of such shares. + References No definition available. + Details
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- Definition Amount of paid and unpaid common stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480008/505-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 2 -SubTopic 405 -Topic 942 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481071/942-405-45-2 + Details
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- Definition 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. + References No definition available. + Details
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- Definition Amount of dividends that can be declared or paid without approval of regulatory agency. + References No definition available. + Details
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- Definition The amount of statutory capital and surplus (stockholders' equity) as of the balance sheet date using prescribed or permitted statutory accounting practices (rather than GAAP, if different) of the state or country. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(23)(c)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 944 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479989/944-505-50-1 + Details
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