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Employee Benefits (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Target allocation and pension plan asset allocation |  |  |
Contributions made to defined benefit pension plans | $ 1 | $ 20 |
Estimated fair value of plan assets | 182 | 227 | $ 206
Reconciliation of benefit obligation: |  |  |
Benefit obligation at beginning of year | 362 | 379 |
Service cost | 9 | 10 | 9
Interest cost | 10 | 9 | 11
Actuarial gains | (97) | (10) |
Plan settlements |  | (19) |
Benefits paid | (8) | (7) |
Benefit obligation at end of year | 276 | 362 | 379
Reconciliation of fair value of plan assets: |  |  |
Fair value of plan assets at beginning of year | 227 | 206 |
Actual return on plan assets | (38) | 27 |
Employer contributions | 1 | 20 |
Plan settlements |  | (19) |
Benefits paid | (8) | (7) |
Fair value of plan assets at end of year | 182 | 227 | 206
Funded status | (94) | (135) |
Components of net periodic benefit cost: |  |  |
Service cost | 9 | 10 | 9
Interest cost | 10 | 9 | 11
Expected return on plan assets | (14) | (12) | (11)
Amortization and other | 6 | 9 | 7
Settlement loss recognized |  | 6 | 11
Net periodic benefit cost | 11 | 22 | $ 27
Amounts not reflected in net periodic benefit cost and included in accumulated other comprehensive loss (AOCL) before taxes |  |  |
Total accumulated other comprehensive loss | 21 | 71 |
Defined benefit pension plan |  |  |
Target allocation and pension plan asset allocation |  |  |
Estimated fair value of plan assets | $ 182 | $ 227 |
Weighted-average assumptions |  |  |
Expected return on plan assets (as a percent) | 6.25% | 6.25% | 6.25%
Long-term rate of increase in compensation levels (as a percent) | 4.00% | 4.00% | 4.00%
Reconciliation of fair value of plan assets: |  |  |
Fair value of plan assets at beginning of year | $ 227 |  |
Fair value of plan assets at end of year | 182 | $ 227 |
Expected future benefit payments |  |  |
2023 | 44 |  |
2024 | 17 |  |
2025 | 11 |  |
2026 | 15 |  |
2027 | 14 |  |
Next five years after year five | 78 |  |
Accumulated benefit obligation | 247 | 319 |
Defined benefit pension plan | Level 1 |  |  |
Target allocation and pension plan asset allocation |  |  |
Estimated fair value of plan assets | 182 | 227 |
Reconciliation of fair value of plan assets: |  |  |
Fair value of plan assets at beginning of year | 227 |  |
Fair value of plan assets at end of year | $ 182 | 227 |
Defined benefit pension plan | Equity Securities |  |  |
Target allocation and pension plan asset allocation |  |  |
Target Allocations (as a percent) | 80.00% |  |
Defined benefit pension plan | Domestic equity securities |  |  |
Target allocation and pension plan asset allocation |  |  |
Estimated fair value of plan assets | $ 84 | 113 |
Reconciliation of fair value of plan assets: |  |  |
Fair value of plan assets at beginning of year | 113 |  |
Fair value of plan assets at end of year | 84 | 113 |
Defined benefit pension plan | Domestic equity securities | Level 1 |  |  |
Target allocation and pension plan asset allocation |  |  |
Estimated fair value of plan assets | 84 | 113 |
Reconciliation of fair value of plan assets: |  |  |
Fair value of plan assets at beginning of year | 113 |  |
Fair value of plan assets at end of year | 84 | 113 |
Defined benefit pension plan | Foreign equity securities |  |  |
Target allocation and pension plan asset allocation |  |  |
Estimated fair value of plan assets | 60 | 71 |
Reconciliation of fair value of plan assets: |  |  |
Fair value of plan assets at beginning of year | 71 |  |
Fair value of plan assets at end of year | 60 | 71 |
Defined benefit pension plan | Foreign equity securities | Level 1 |  |  |
Target allocation and pension plan asset allocation |  |  |
Estimated fair value of plan assets | 60 | 71 |
Reconciliation of fair value of plan assets: |  |  |
Fair value of plan assets at beginning of year | 71 |  |
Fair value of plan assets at end of year | $ 60 | 71 |
Defined benefit pension plan | Fixed income |  |  |
Target allocation and pension plan asset allocation |  |  |
Target Allocations (as a percent) | 20.00% |  |
Estimated fair value of plan assets | $ 26 | 29 |
Reconciliation of fair value of plan assets: |  |  |
Fair value of plan assets at beginning of year | 29 |  |
Fair value of plan assets at end of year | 26 | 29 |
Defined benefit pension plan | Fixed income | Level 1 |  |  |
Target allocation and pension plan asset allocation |  |  |
Estimated fair value of plan assets | 26 | 29 |
Reconciliation of fair value of plan assets: |  |  |
Fair value of plan assets at beginning of year | 29 |  |
Fair value of plan assets at end of year | 26 | 29 |
Defined benefit pension plan | International fixed income mutual funds |  |  |
Target allocation and pension plan asset allocation |  |  |
Estimated fair value of plan assets | 11 | 12 |
Reconciliation of fair value of plan assets: |  |  |
Fair value of plan assets at beginning of year | 12 |  |
Fair value of plan assets at end of year | 11 | 12 |
Defined benefit pension plan | International fixed income mutual funds | Level 1 |  |  |
Target allocation and pension plan asset allocation |  |  |
Estimated fair value of plan assets | 11 | 12 |
Reconciliation of fair value of plan assets: |  |  |
Fair value of plan assets at beginning of year | 12 |  |
Fair value of plan assets at end of year | 11 | 12 |
Defined benefit pension plan | Money market funds |  |  |
Target allocation and pension plan asset allocation |  |  |
Estimated fair value of plan assets | 1 | 2 |
Reconciliation of fair value of plan assets: |  |  |
Fair value of plan assets at beginning of year | 2 |  |
Fair value of plan assets at end of year | 1 | 2 |
Defined benefit pension plan | Money market funds | Level 1 |  |  |
Target allocation and pension plan asset allocation |  |  |
Estimated fair value of plan assets | 1 | 2 |
Reconciliation of fair value of plan assets: |  |  |
Fair value of plan assets at beginning of year | 2 |  |
Fair value of plan assets at end of year | $ 1 | $ 2 |
Defined benefit pension plan | Minimum |  |  |
Weighted-average assumptions |  |  |
Discount rate used to determine obligations (as a percent) | 5.30% | 1.20% | 0.70%
Discount rate used to determine net periodic benefit cost (as a percent) | 1.20% | 0.70% | 2.15%
Defined benefit pension plan | Maximum |  |  |
Weighted-average assumptions |  |  |
Discount rate used to determine obligations (as a percent) | 5.40% | 2.90% | 2.60%
Discount rate used to determine net periodic benefit cost (as a percent) | 2.90% | 2.60% | 3.50%

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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. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b)(5) -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 60 -Section 50 -Paragraph 4 -URI https://asc.fasb.org/extlink&oid=6414203&loc=d3e39716-114964 + Details
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