Leases - Summary of Comprehensive Income amounts relating to leases (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Disclosure of quantitative information about right-of-use assets [line items]
Total depreciation charge of right-of-use assets	$ 4	$ 4	$ 8	$ 7
Properties
Disclosure of quantitative information about right-of-use assets [line items]
Total depreciation charge of right-of-use assets	$ 4	$ 4	$ 8	$ 7

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

No definition available.

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