Pension and Postretirement Benefit Plans - Schedule of Company Contributions (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024
Pension Plan
Benefit Plan Information
Company contributions	$ 132	$ 140
Postretirement benefits
Benefit Plan Information
Company contributions	$ 13	$ 14

Amount of contribution received by defined benefit plan from employer which increases plan assets.

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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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