BENEFIT PLANS - Fair Value of Plan Assets (Details) - USD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2020 |
Dec. 31, 2019 |
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| Change in Fair Value of Plan Assets [Abstract] | ||
| Fair value of plan assets at beginning of measurement year | $ 931 | |
| Fair value of plan assets at end of measurement year | 1,050 | $ 931 |
| Pension Benefits | ||
| Change in Fair Value of Plan Assets [Abstract] | ||
| Fair value of plan assets at beginning of measurement year | 931 | 828 |
| Actual return on plan assets | 164 | 145 |
| Settlements | (16) | (13) |
| Benefits paid | (29) | (29) |
| Total changes | 119 | 103 |
| Fair value of plan assets at end of measurement year | $ 1,050 | $ 931 |
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- Definition Amount of increase (decrease) in plan assets of defined benefit plan from actual return (loss) determined by change in fair value of plan assets adjusted for contributions, benefit payments, and other expenses. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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- Definition Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of increase (decrease) in plan assets of defined benefit plan. No definition available.
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- Definition Amount of payment to participant under defined benefit plan which decreases plan assets. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of payment, which decreases plan assets of defined benefit plan, for irrevocable action relieving primary responsibility for benefit obligation and eliminating risk for obligation and assets used to effect settlement. Transaction constituting settlement includes, but is not limited to, making lump-sum cash payment to participant in exchange for their rights to receive specified benefits and purchasing nonparticipating annuity contract. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Details
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