v3.25.4

PENSION AND POSTRETIREMENT EMPLOYEE BENEFIT PLANS - Narrative (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2026 | Dec. 31, 2025 USD ($) defined_benefit_plan | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($)
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Future benefit payments period |  | 10 years |  |
B+L and BHC |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Contributions recognized |  | $ 38 | $ 36 | $ 34
Pension Benefit Plans |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Benefit accrual, interest percentage earned on cash balance |  | 4.50% |  |
Pension Benefit Plans | Non-U.S. Plans |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Estimated company contributions in next fiscal year |  | $ 2 |  |
Percentage of expected return on plan assets |  | 4.38% | 4.37% | 4.10%
Pension Benefit Plans | Ireland |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Number of defined benefit plans | defined_benefit_plan |  | 2 |  |
Number of defined benefit plans amended | defined_benefit_plan |  | 1 |  |
Percentage allocation of fund |  | 89.00% | 90.00% |
Pension Benefit Plans | Ireland | Scenario, Forecast |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Percentage of expected return on plan assets | 4.50% |  |  |
Pension Benefit Plans | U.S. Plan |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Estimated company contributions in next fiscal year |  | $ 3 |  |
Percentage of expected return on plan assets |  | 5.50% | 6.00% | 6.00%
Pension Benefit Plans | U.S. Plan | Scenario, Forecast |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Percentage of expected return on plan assets | 5.50% |  |  |
U.S. Postretirement Benefit Plan |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Employer contribution maximum age |  | 65 years |  |
U.S. Postretirement Benefit Plan | U.S. Plan |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Estimated company contributions in next fiscal year |  | $ 3 |  |
Percentage of expected return on plan assets |  | 0.00% | 0.00% | 0.00%

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