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Pension and other postretirement benefits - Schedule of Fair Value of Plan Assets (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | --- | ---
United States | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 434 | $ 449 | $ 446
Non-U.S. | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 2,463 | 2,524 | 2,316
Level 1 | United States | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 19 | 14 |
Level 1 | Non-U.S. | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 1,966 | 2,017 |
Level 2 | United States | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 413 | 431 |
Level 2 | Non-U.S. | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 376 | 368 |
Level 3 | United States |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 2 | 4 | 19
Level 3 | United States | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 2 | 4 |
Level 3 | Non-U.S. |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 121 | 139 | 132
Level 3 | Non-U.S. | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 121 | 139 |
Cash and cash equivalents | United States | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 3 | 3 |
Target allocation ranges | 0.00% |  |
Cash and cash equivalents | Non-U.S. | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 54 | 65 |
Cash and cash equivalents | Non-U.S. | Pension Plans | Maximum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation ranges | 5.00% |  |
Cash and cash equivalents | Non-U.S. | Pension Plans | Minimum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation ranges | 0.00% |  |
Cash and cash equivalents | Level 1 | United States | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 3 | 3 |
Cash and cash equivalents | Level 1 | Non-U.S. | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 32 | 50 |
Cash and cash equivalents | Level 2 | United States | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Cash and cash equivalents | Level 2 | Non-U.S. | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 22 | 15 |
Cash and cash equivalents | Level 3 | United States | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Cash and cash equivalents | Level 3 | Non-U.S. | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 0 | 0 |
Equity instruments | United States | Maximum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation ranges | 30.00% |  |
Equity instruments | United States | Minimum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation ranges | 10.00% |  |
Equity instruments | United States | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 87 | 90 |
Equity instruments | United States | Pension Plans | Developed markets |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 78 | 79 |
Equity instruments | United States | Pension Plans | Emerging markets |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 9 | 11 |
Equity instruments | United States | Pension Plans | Maximum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation ranges | 30.00% |  |
Equity instruments | United States | Pension Plans | Maximum | Developed markets |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation ranges | 30.00% |  |
Equity instruments | United States | Pension Plans | Maximum | Emerging markets |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation ranges | 30.00% |  |
Equity instruments | United States | Pension Plans | Minimum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation ranges | 10.00% |  |
Equity instruments | United States | Pension Plans | Minimum | Developed markets |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation ranges | 10.00% |  |
Equity instruments | United States | Pension Plans | Minimum | Emerging markets |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation ranges | 10.00% |  |
Equity instruments | Non-U.S. | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 558 | 518 |
Equity instruments | Non-U.S. | Pension Plans | Developed markets |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 521 | 486 |
Equity instruments | Non-U.S. | Pension Plans | Emerging markets |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 37 | 32 |
Equity instruments | Non-U.S. | Pension Plans | Maximum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation ranges | 25.00% |  |
Equity instruments | Non-U.S. | Pension Plans | Maximum | Developed markets |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation ranges | 24.00% |  |
Equity instruments | Non-U.S. | Pension Plans | Maximum | Emerging markets |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation ranges | 2.00% |  |
Equity instruments | Non-U.S. | Pension Plans | Minimum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation ranges | 15.00% |  |
Equity instruments | Non-U.S. | Pension Plans | Minimum | Developed markets |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation ranges | 16.00% |  |
Equity instruments | Non-U.S. | Pension Plans | Minimum | Emerging markets |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation ranges | 1.00% |  |
Equity instruments | Level 1 | United States | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 0 | 0 |
Equity instruments | Level 1 | Non-U.S. | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 499 | 462 |
Equity instruments | Level 2 | United States | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 87 | 90 |
Equity instruments | Level 2 | Non-U.S. | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 59 | 56 |
Equity instruments | Level 3 | United States | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Equity instruments | Level 3 | Non-U.S. | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 0 | 0 |
Debt instrument | United States | Maximum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation ranges | 85.00% |  |
Debt instrument | United States | Minimum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation ranges | 65.00% |  |
Debt instrument | United States | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 326 | 341 |
Debt instrument | United States | Pension Plans | Non-government debt instruments |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 226 | 233 |
Debt instrument | United States | Pension Plans | Government fixed interest instruments |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 100 | 108 |
Debt instrument | United States | Pension Plans | Maximum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation ranges | 85.00% |  |
Debt instrument | United States | Pension Plans | Maximum | Non-government debt instruments |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation ranges | 85.00% |  |
Debt instrument | United States | Pension Plans | Maximum | Government fixed interest instruments |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation ranges | 85.00% |  |
Debt instrument | United States | Pension Plans | Minimum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation ranges | 65.00% |  |
Debt instrument | United States | Pension Plans | Minimum | Non-government debt instruments |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation ranges | 65.00% |  |
Debt instrument | United States | Pension Plans | Minimum | Government fixed interest instruments |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation ranges | 65.00% |  |
Debt instrument | Non-U.S. | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 1,437 | 1,489 |
Debt instrument | Non-U.S. | Pension Plans | Non-government debt instruments |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 245 | 251 |
Debt instrument | Non-U.S. | Pension Plans | Government fixed interest instruments |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 721 | 400 |
Debt instrument | Non-U.S. | Pension Plans | Inflation-protected bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  | 41 |
Debt instrument | Non-U.S. | Pension Plans | Government inflation-protected bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 434 | 763 |
Debt instrument | Non-U.S. | Pension Plans | Asset-backed securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 37 | 34 |
Debt instrument | Non-U.S. | Pension Plans | Maximum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation ranges | 40.00% |  |
Debt instrument | Non-U.S. | Pension Plans | Maximum | Non-government debt instruments |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation ranges | 35.00% |  |
Debt instrument | Non-U.S. | Pension Plans | Maximum | Government fixed interest instruments |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation ranges | 44.00% |  |
Debt instrument | Non-U.S. | Pension Plans | Maximum | Inflation-protected bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation ranges | 16.00% |  |
Debt instrument | Non-U.S. | Pension Plans | Maximum | Government inflation-protected bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation ranges | 31.00% |  |
Debt instrument | Non-U.S. | Pension Plans | Maximum | Asset-backed securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation ranges | 16.00% |  |
Debt instrument | Non-U.S. | Pension Plans | Minimum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation ranges | 25.00% |  |
Debt instrument | Non-U.S. | Pension Plans | Minimum | Non-government debt instruments |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation ranges | 24.00% |  |
Debt instrument | Non-U.S. | Pension Plans | Minimum | Government fixed interest instruments |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation ranges | 32.00% |  |
Debt instrument | Non-U.S. | Pension Plans | Minimum | Inflation-protected bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation ranges | 9.00% |  |
Debt instrument | Non-U.S. | Pension Plans | Minimum | Government inflation-protected bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation ranges | 23.00% |  |
Debt instrument | Non-U.S. | Pension Plans | Minimum | Asset-backed securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation ranges | 9.00% |  |
Debt instrument | Level 1 | United States | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 0 | 0 |
Debt instrument | Level 1 | Non-U.S. | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 1,226 | 1,310 |
Debt instrument | Level 2 | United States | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 326 | 341 |
Debt instrument | Level 2 | Non-U.S. | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 211 | 179 |
Debt instrument | Level 3 | United States | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Debt instrument | Level 3 | Non-U.S. | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Real estate | United States | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 0 | 0 |
Target allocation ranges | 0.00% |  |
Real estate | Non-U.S. | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 200 | 193 |
Real estate | Non-U.S. | Pension Plans | Maximum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation ranges | 10.00% |  |
Real estate | Non-U.S. | Pension Plans | Minimum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation ranges | 5.00% |  |
Real estate | Level 1 | United States | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 0 | 0 |
Real estate | Level 1 | Non-U.S. | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 111 | 97 |
Real estate | Level 2 | United States | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Real estate | Level 2 | Non-U.S. | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 81 | 82 |
Real estate | Level 3 | United States | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Real estate | Level 3 | Non-U.S. |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 8 | 14 | 13
Real estate | Level 3 | Non-U.S. | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 8 | 14 |
Derivatives | United States | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 0 | 0 |
Target allocation ranges | 0.00% |  |
Derivatives | Non-U.S. | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ (15) | 14 |
Derivatives | Non-U.S. | Pension Plans | Minimum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation ranges | 0.00% |  |
Derivatives | Level 1 | United States | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 0 | 0 |
Derivatives | Level 1 | Non-U.S. | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 8 | 12 |
Derivatives | Level 2 | United States | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Derivatives | Level 2 | Non-U.S. | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | (23) | 2 |
Derivatives | Level 3 | United States | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Derivatives | Level 3 | Non-U.S. | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Investment funds | United States | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 16 | 11 |
Investment funds | United States | Pension Plans | Maximum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation ranges | 15.00% |  |
Investment funds | United States | Pension Plans | Minimum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation ranges | 0.00% |  |
Investment funds | Non-U.S. | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 108 | 98 |
Investment funds | Non-U.S. | Pension Plans | Maximum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation ranges | 5.00% |  |
Investment funds | Non-U.S. | Pension Plans | Minimum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation ranges | 0.00% |  |
Investment funds | Level 1 | United States | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 16 | 11 |
Investment funds | Level 1 | Non-U.S. | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 87 | 85 |
Investment funds | Level 2 | United States | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Investment funds | Level 2 | Non-U.S. | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 21 | 13 |
Investment funds | Level 3 | United States |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  | 0 | 11
Investment funds | Level 3 | United States | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Investment funds | Level 3 | Non-U.S. | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Assets held by insurance company | United States | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 0 | 0 |
Target allocation ranges | 0.00% |  |
Assets held by insurance company | Non-U.S. | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 107 | 119 |
Assets held by insurance company | Non-U.S. | Pension Plans | Maximum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation ranges | 5.00% |  |
Assets held by insurance company | Non-U.S. | Pension Plans | Minimum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation ranges | 0.00% |  |
Assets held by insurance company | Level 1 | United States | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 0 | 0 |
Assets held by insurance company | Level 1 | Non-U.S. | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Assets held by insurance company | Level 2 | United States | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Assets held by insurance company | Level 2 | Non-U.S. | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 2 | 2 |
Assets held by insurance company | Level 3 | United States | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Assets held by insurance company | Level 3 | Non-U.S. |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 105 | 117 | 113
Assets held by insurance company | Level 3 | Non-U.S. | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 105 | 117 |
Other | United States | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 2 | 4 |
Target allocation ranges | 0.00% |  |
Other | Non-U.S. | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 14 | 28 |
Other | Non-U.S. | Pension Plans | Minimum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation ranges | 0.00% |  |
Other | Level 1 | United States | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 0 | 0 |
Other | Level 1 | Non-U.S. | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 3 | 1 |
Other | Level 2 | United States | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Other | Level 2 | Non-U.S. | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 3 | 19 |
Other | Level 3 | United States |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 2 | 4 | 8
Other | Level 3 | United States | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 2 | 4 |
Other | Level 3 | Non-U.S. |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 8 | 8 | $ 6
Other | Level 3 | Non-U.S. | Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 8 | $ 8 |

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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. + 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 (d)(iv)(02) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(ii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(01) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 Reference 6: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(ii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 Reference 7: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(01) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 + Details
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