PENSION AND OTHER POSTRETIREMENT BENEFITS - Schedule of Contributions (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Pension and other postretirement benefits
Defined contribution pension plans	$ 25	$ 27	$ 69	$ 76
Pension
Pension and other postretirement benefits
Defined benefit pension contributions and OPEB payments, net	12	11	24	23
OPEB
Pension and other postretirement benefits
Defined benefit pension contributions and OPEB payments, net	$ 3	$ 2	$ 4	$ 3

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

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- 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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