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STOCKHOLDERS' EQUITY - Narrative (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions | 1 Months Ended | 3 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Feb. 20, 2025 | Dec. 31, 2024 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Feb. 19, 2025 | Feb. 16, 2024 | Feb. 15, 2024
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |
Cash dividend declared (in dollars per share) |  | $ 0.885 |  |  |  |  |  |
Dividends |  | $ 107 |  |  |  |  |  |
Increase in treasury stock from share repurchases |  |  | $ 803 | $ 1,586 | $ 2,096 |  |  |
Common shares acquired in connection with employee stock plans (in shares) |  |  | 0.2 | 0.2 | 0.2 |  |  |
Common shares acquired in connection with employee stock plans, amount |  |  | $ 46 | $ 73 | $ 96 |  |  |
Aggregate statutory capital and surplus in our state regulated insurance subsidiaries |  | 13,200 | 13,200 | 12,200 |  |  |  |
Aggregate minimum regulatory requirements of statutory capital and surplus |  | 11,400 | 11,400 | 9,800 |  |  |  |
Ordinary dividends that may be paid to parent company |  | $ 1,300 | 1,300 |  |  |  |  |
Actual dividends paid to parent company |  |  | $ 1,500 | $ 1,800 | $ 1,300 |  |  |
2023 Share Repurchase Authorization |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |
Remaining authorized amount |  |  |  |  |  |  |  | $ 824
Shares received (in shares) |  |  | 1.7 |  |  |  |  |
Increase in treasury stock from share repurchases |  |  | $ 676 |  |  |  |  |
Stock repurchase average price (in dollars per share) |  |  | $ 390.30 |  |  |  |  |
2024 Share Repurchase Authorization |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |
Purchase Not to Exceed |  |  |  |  |  |  | $ 3,000 |
Shares received (in shares) |  |  | 0.2 |  |  |  |  |
Increase in treasury stock from share repurchases |  |  | $ 74 |  |  |  |  |
Stock repurchase average price (in dollars per share) |  |  | $ 339.55 |  |  |  |  |
Subsequent Event |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |
Cash dividend declared (in dollars per share) | $ 0.885 |  |  |  |  |  |  |
Subsequent Event | 2024 Share Repurchase Authorization |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |
Remaining authorized amount |  |  |  |  |  | $ 2,900 |  |

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