Pension and Other Postretirement Benefits - Narrative (Details) $ in Millions	6 Months Ended
Jun. 30, 2026 USD ($)
Pension
Defined Benefit Plan Disclosure [Line Items]
Expected current year company contributions	$ 24
Contributions	16
Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Expected current year company contributions	31
Contributions	$ 13

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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+ Details