Shareholders' Equity - Regulatory Requirements (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2022 |
|
| Statutory Accounting Practices [Line Items] | |||
| Estimated minimum statutory surplus required by regulators | $ 11,691 | ||
| Investments on deposit with regulatory bodies | 713 | ||
| Estimated maximum dividend distributions permitted in 2025 without prior regulatory approval | 1,561 | ||
| Insurance and HMO | |||
| Statutory Accounting Practices [Line Items] | |||
| Statutory net income (loss) | (1,185) | $ 2,757 | $ 2,851 |
| Estimated statutory capital and surplus | 20,085 | $ 16,961 | $ 15,503 |
| Dividends paid | $ 755 | ||
| X | ||||||||||
- Definition Carrying amount of cash and investment securities on deposit with state regulatory authorities in connection with capital requirements. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition This element represents disclosure of the aggregate cash dividends paid to the entity by consolidated subsidiaries. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- 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. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount of dividends that can be declared or paid without approval of regulatory agency. No definition available.
|
| X | ||||||||||
- 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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of statutory capital required to be maintained as of the balance sheet date under prescribed or permitted statutory accounting practices. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of net income for the period determined using accounting principles prescribed or permitted by insurance regulators. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Details
|