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Employee Benefit Plans - Change in Benefit Obligations and Fair Value of Plan Assets (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Pension Benefits | United States |  |  |
Change in Benefit Obligation |  |  |
Benefit obligation, beginning balance | $ 1,924 | $ 2,548 |
Service cost | 58 | 73 | $ 85
Interest cost | 62 | 53 | 66
Plan participant contributions | 0 | 0 |
Plan amendments | 0 | 0 |
Actuarial (gain) loss | (325) | (117) |
Benefits paid | (241) | (654) |
Divestiture | 0 | 0 |
Curtailment | 0 | 12 |
Recognition of termination benefits | 0 | 9 |
Foreign currency exchange rate change | 0 | 0 |
Benefit obligation, ending balance | 1,478 | 1,924 | 2,548
Accumulated benefit obligation | 1,384 | 1,793 |
Change in Fair Value of Plan Assets |  |  |
Fair value of plan assets, beginning balance | 1,664 | 1,770 |
Actual return on plan assets | (319) | 97 |
Company contributions | 75 | 451 |
Plan participant contributions | 0 | 0 |
Benefits paid | (241) | (654) |
Divestiture | 0 | 0 |
Foreign currency exchange rate change | 0 | 0 |
Fair value of plan assets, ending balance | 1,179 | 1,664 | 1,770
Funded Status | (299) | (260) |
Pension Benefits | Int’l. |  |  |
Change in Benefit Obligation |  |  |
Benefit obligation, beginning balance | 4,124 | 4,403 |
Service cost | 47 | 61 | 54
Interest cost | 77 | 79 | 85
Plan participant contributions | 0 | 0 |
Plan amendments | 0 | 0 |
Actuarial (gain) loss | (847) | (176) |
Benefits paid | (144) | (162) |
Divestiture | (56) | 0 |
Curtailment | 0 | 0 |
Recognition of termination benefits | 0 | 0 |
Foreign currency exchange rate change | (425) | (81) |
Benefit obligation, ending balance | 2,776 | 4,124 | 4,403
Accumulated benefit obligation | 2,542 | 3,658 |
Change in Fair Value of Plan Assets |  |  |
Fair value of plan assets, beginning balance | 4,812 | 4,793 |
Actual return on plan assets | (1,372) | 147 |
Company contributions | 96 | 119 |
Plan participant contributions | 1 | 1 |
Benefits paid | (144) | (162) |
Divestiture | (46) | 0 |
Foreign currency exchange rate change | (468) | (86) |
Fair value of plan assets, ending balance | 2,879 | 4,812 | 4,793
Funded Status | 103 | 688 |
Other Benefits |  |  |
Change in Benefit Obligation |  |  |
Benefit obligation, beginning balance | 137 | 170 |
Service cost | 1 | 2 | 2
Interest cost | 4 | 4 | 6
Plan participant contributions | 16 | 16 |
Plan amendments | 9 | 0 |
Actuarial (gain) loss | (27) | (16) |
Benefits paid | (38) | (40) |
Divestiture | 0 | 0 |
Curtailment | 0 | 1 |
Recognition of termination benefits | 0 | 0 |
Foreign currency exchange rate change | 0 | 0 |
Benefit obligation, ending balance | 102 | 137 | 170
Change in Fair Value of Plan Assets |  |  |
Fair value of plan assets, beginning balance | 0 | 0 |
Actual return on plan assets | 0 | 0 |
Company contributions | 22 | 24 |
Plan participant contributions | 16 | 16 |
Benefits paid | (38) | (40) |
Divestiture | 0 | 0 |
Foreign currency exchange rate change | 0 | 0 |
Fair value of plan assets, ending balance | 0 | 0 | $ 0
Funded Status | $ (102) | $ (137) |

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- Definition Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level. + 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 (e) -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
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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. + 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)(1) -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI https://asc.fasb.org/extlink&oid=123450688&loc=d3e4179-114921 + Details
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- Definition Amount of gain (loss) from change in actuarial assumptions which (increases) decreases benefit obligation of defined benefit plan. Assumptions include, but are not limited to, interest, mortality, employee turnover, salary, and temporary deviation from substantive plan. + 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 (a)(4) -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
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- Definition Amount of payment to participant of defined benefit plan which decreases benefit obligation. 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 (a)(6) -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -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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- Definition Amount of contributions received by defined benefit plan from participant which increase benefit obligation. + 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 (a)(3) -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
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- Definition Amount of contribution received by defined benefit plan from employer which increases plan assets. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI https://asc.fasb.org/extlink&oid=123450688&loc=d3e4179-114921 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(01) -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e2709-114920 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(ii) -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 5: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 18 -URI https://asc.fasb.org/extlink&oid=123450688&loc=d3e4587-114921 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(01) -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b)(3) -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
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