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Accumulated Other Comprehensive Income (Loss) | 6 Months Ended
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Jun. 30, 2023
Equity [Abstract] |
Accumulated Other Comprehensive Income (Loss) | Accumulated Other Comprehensive Income (Loss) Changes in accumulated other comprehensive income (loss) by component for the six months ended June 30, 2023 and 2022 were as follows:
|  | Pension and Other Post-Retirement Benefits Liability, Net of Tax |  | Cumulative Foreign Currency Exchange, Net of Tax |  | Other, Net of Tax |  | Total
Balances at December 31, 2022 |  | $ | 52 |  |  | $ | (141) |  |  | $ | — |  |  | $ | (89) |
Net other comprehensive income (loss) attributable to Westlake Corporation |  | (13) |  |  | 24 |  |  | (1) |  |  | 10 |
Balances at June 30, 2023 |  | $ | 39 |  |  | $ | (117) |  |  | $ | (1) |  |  | $ | (79) |
Balances at December 31, 2021 |  | $ | 20 |  |  | $ | (56) |  |  | $ | — |  |  | $ | (36) |
Net other comprehensive income (loss) attributable to Westlake Corporation |  | 1 |  |  | (81) |  |  | — |  |  | (80) |
Balances at June 30, 2022 |  | $ | 21 |  |  | $ | (137) |  |  | $ | — |  |  | $ | (116) |

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- Definition The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(19)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483586/944-220-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(21)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(23)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483589/942-220-S99-1 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//220/tableOfContent + Details
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