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Pension and Other Postretirement Employee Benefit Plans (Narrative) (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Corridor approach percentage over which actuarial gains and losses are amortized |  | 10.00% |  |
NAV per share, investment redemption, notice period |  | 90 days |  |
Expense for all defined benefit and defined contributions pension plans |  | $ 282 | $ 219 | $ 237
Pension Benefits |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Unrecognized prior service credits, before tax |  | 4 |  |
Prior service credit, after tax |  | 3 |  |
Unrecognized actuarial losses, before tax |  | (399) |  |
Unrecognized actuarial losses, net of tax |  | $ (303) |  |
Pension Benefits | U.S. Pension Benefits |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Long-term rate of return on asset assumptions |  | 6.80% | 6.80% | 6.80%
Expected employer contributions within the next year |  | $ 8 |  |
Pension Benefits | U.S. Pension Benefits | Scenario, forecast |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Long-term rate of return on asset assumptions | 6.80% |  |  |
Pension Benefits | U.S. Pension Benefits | Minimum |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined benefit plan, plan assets, target allocation, percentage |  | 60.00% |  |
Pension Benefits | U.S. Pension Benefits | Maximum |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined benefit plan, plan assets, target allocation, percentage |  | 70.00% |  |
Pension Benefits | Foreign Plan |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Long-term rate of return on asset assumptions |  | 4.20% | 4.60% |
Expected employer contributions within the next year |  | $ 35 |  |
Pension Benefits | Foreign Plan | Minimum |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Long-term rate of return on asset assumptions |  | 0.80% | 0.80% |
Pension Benefits | Foreign Plan | Maximum |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Long-term rate of return on asset assumptions |  | 7.00% | 6.80% |
Pension Benefits | Foreign Plan | Weighted average |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Long-term rate of return on asset assumptions |  | 4.20% | 4.60% |
Postretirement Benefits |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Medical trend rate - initial |  | 7.70% | 5.90% |
Medical trend rate - ultimate |  | 4.00% | 4.00% |
Unrecognized prior service credits, before tax |  | $ 6 |  |
Prior service credit, after tax |  | 4 |  |
Unrecognized actuarial losses, before tax |  | (6) |  |
Unrecognized actuarial losses, net of tax |  | (4) |  |
Expected employer contributions within the next year |  | $ 13 |  |

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- Definition Amount, after tax, of accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-14A Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (j) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 + Details
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- Definition Amount, before tax, of accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-14A Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (j) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 + Details
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