Segments of Operations - Assets by segment (Details) - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025
Segment Reporting [Line Items]
Total assets	$ 33,034	$ 32,642
Property and casualty insurance
Segment Reporting [Line Items]
Total assets	28,065	27,654
Other
Segment Reporting [Line Items]
Total assets	$ 4,969	$ 4,988

Amount of asset recognized for present right to economic benefit.

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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.

+ References

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+ Details