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EMPLOYEE BENEFIT PLANS - Schedule of Changes in Projected Benefit Obligations, Plan Assets and Funded Status (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Change in plan assets |  |  |
Plan assets at beginning of period | $ 1,589 |  |
Plan assets at end of period | 1,648 | $ 1,589 |
Reported in Consolidated Balance Sheets |  |  |
Funded Pension Plans (other assets) | 658 | 568 |
Retirement Plans |  |  |
Change in benefit obligation |  |  |
Benefit obligation at beginning of period | 1,169 | 1,115 |
Service cost | 10 | 9 | $ 14
Interest cost | 59 | 61 | 43
Actuarial (gain) loss | (30) | 50 |
Benefits paid | (68) | (66) |
Benefit obligation at end of period | 1,140 | 1,169 | 1,115
Change in plan assets |  |  |
Plan assets at beginning of period | 1,589 | 1,404 |
Actual return on plan assets | 121 | 245 |
Employer contributions | 6 | 6 |
Benefits paid | (68) | (66) |
Plan assets at end of period | 1,648 | 1,589 | $ 1,404
Funded status at December 31 | 508 | 420 |
Information for retirement plans with a benefit obligation in excess of plan assets |  |  |
Projected and accumulated benefit obligations | 49 | 54 |
Reported in Consolidated Balance Sheets |  |  |
Net funded status of Retirement Plans | 508 | 420 |
Retirement Plans | Other Assets |  |  |
Reported in Consolidated Balance Sheets |  |  |
Funded Pension Plans (other assets) | 557 | 474 |
Retirement Plans | Other Liabilities |  |  |
Reported in Consolidated Balance Sheets |  |  |
Unfunded Supplemental and Executive Retirement Plans (other liabilities) | $ (49) | $ (54) |

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