Segment Information - Reconciliation of Reportable Segments Operating Revenues to Total Revenues Reported in the Consolidated Statements of Income (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Segment Reporting [Line Items]
Reportable segments’ operating revenue	$ 50,440	$ 50,087	$ 149,760	$ 148,273
Net investment income	1,037	625	2,506	1,701
Net losses on financial instruments	(48)	(1)	(182)	(596)
Total revenues	51,429	50,711	152,084	149,378
Reportable Segments
Segment Reporting [Line Items]
Reportable segments’ operating revenue	50,440	50,087	149,760	148,273
Net investment income	1,037	625	2,506	1,701
Net losses on financial instruments	(48)	(1)	(182)	(596)
Total revenues	$ 51,429	$ 50,711	$ 152,084	$ 149,378

Amount, after investment expense, of income earned from investments in securities and real estate. Includes, but is not limited to, real estate investment, policy loans, dividends, and interest. Excludes realized gain (loss) on investments.

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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+ Details

- 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.

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+ Details