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Employee Benefit Plans (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Defined Benefit Plan, Amounts Recognized in Balance Sheet |  |  |  |  |  |
Accrued expenses |  | $ (55) |  | $ (35) |  |
Other long-term liabilities |  | (476) |  | (448) |  |
Pension Plans [Member] |  |  |  |  |  |
Changes in benefit obligation |  |  |  |  |  |
Benefit obligation as of beginning of year |  | 2,413 | [1] | 3,463 |  |
Service cost |  | 111 |  | 152 |  | $ 161
Interest cost |  | 121 |  | 85 |  | 73
Participant contributions |  | 0 |  | 0 |  |
Plan amendments |  | 19 |  | 0 |  |
Benefits paid |  | (166) |  | (366) |  |
Actuarial (gain) loss |  | 110 |  | (882) |  |
Foreign currency exchange rate changes |  | 10 |  | (39) |  |
Benefit obligation as of end of year |  | 2,618 | [1] | 2,413 | [1] | 3,463
Changes in plan assets |  |  |  |  |  |
Fair value of plan assets as of beginning of year | [1] | 2,485 |  | 3,303 |  |
Actual return on plan assets | [1] | 399 |  | (532) |  |
Company contributions | [1] | 101 |  | 120 |  |
Participant contributions | [1] | 0 |  | 0 |  |
Benefits paid | [1] | (166) |  | (366) |  |
Foreign currency exchange rate changes | [1] | 16 |  | (40) |  |
Fair value of plan assets as of end of year | [1] | 2,835 |  | 2,485 |  | $ 3,303
Reconciliation of funded status: |  |  |  |  |  |
Funded status as of end of year | [1] | 217 |  | 72 |  |
Accumulated benefit obligation |  | $ 2,450 |  | $ 2,271 |  |
Actuarial Gain (Loss), Discount Rates (Textual) |  |  |  |  |  |
Discount rate |  | 5.01% |  | 5.19% |  | 2.93%
Defined Benefit Plan, Amounts Recognized in Balance Sheet |  |  |  |  |  |
Deferred charges and other assets, net |  | $ 482 |  | $ 297 |  |
Accrued expenses |  | (32) |  | (14) |  |
Other long-term liabilities |  | (233) |  | (211) |  |
Amounts recognized in balance sheet for defined benefit plans |  | 217 |  | 72 |  |
Other Postretirement Benefit Plans [Member] |  |  |  |  |  |
Changes in benefit obligation |  |  |  |  |  |
Benefit obligation as of beginning of year |  | 258 | [1] | 347 |  |
Service cost |  | 4 |  | 6 |  | $ 7
Interest cost |  | 13 |  | 8 |  | 7
Participant contributions |  | 22 |  | 13 |  |
Plan amendments |  | 0 |  | 0 |  |
Benefits paid |  | (42) |  | (29) |  |
Actuarial (gain) loss |  | 10 |  | (86) |  |
Foreign currency exchange rate changes |  | 1 |  | (1) |  |
Benefit obligation as of end of year |  | 266 | [1] | 258 | [1] | 347
Changes in plan assets |  |  |  |  |  |
Fair value of plan assets as of beginning of year | [1] | 0 |  | 0 |  |
Actual return on plan assets | [1] | 0 |  | 0 |  |
Company contributions | [1] | 20 |  | 16 |  |
Participant contributions | [1] | 22 |  | 13 |  |
Benefits paid | [1] | (42) |  | (29) |  |
Foreign currency exchange rate changes | [1] | 0 |  | 0 |  |
Fair value of plan assets as of end of year | [1] | 0 |  | 0 |  | $ 0
Reconciliation of funded status: |  |  |  |  |  |
Funded status as of end of year | [1] | $ (266) |  | $ (258) |  |
Actuarial Gain (Loss), Discount Rates (Textual) |  |  |  |  |  |
Discount rate |  | 5.01% |  | 5.20% |  |
Defined Benefit Plan, Amounts Recognized in Balance Sheet |  |  |  |  |  |
Deferred charges and other assets, net |  | $ 0 |  | $ 0 |  |
Accrued expenses |  | (23) |  | (21) |  |
Other long-term liabilities |  | (243) |  | (237) |  |
Amounts recognized in balance sheet for defined benefit plans |  | $ (266) |  | $ (258) |  |
[1] | Plan assets include only the assets associated with pension plans subject to legal minimum funding standards. Plan assets associated with U.S. nonqualified pension plans are not included here because they are not protected from our creditors and therefore cannot be reflected as a reduction from our obligations under the pension plans. As a result, the reconciliation of funded status does not reflect the effect of plan assets that exist for all of our defined benefit plans. See Note 19 for the assets associated with certain U.S. nonqualified pension plans.

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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 -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + 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/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 17 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480482/715-20-55-17 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + 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 -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a)(4) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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- Definition Amount of asset, recognized in statement of financial position, for overfunded defined benefit pension and other postretirement plans. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 17 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480482/715-20-55-17 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(10)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-04(7)(b)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479617/946-210-S99-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480535/715-20-45-2 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480535/715-20-45-3 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(10)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 + 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 -Topic 715 -SubTopic 60 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480266/715-60-50-4 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a)(6) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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- Definition Amount of funded (unfunded) status of defined benefit plan, measured as difference between fair value of plan assets and benefit obligation. Includes, but is not limited to, overfunded (underfunded) status. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 17 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480482/715-20-55-17 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480535/715-20-45-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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