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Accumulated Other Comprehensive Income (Loss) (Tables)

3 Months Ended

Mar. 31, 2021

Equity [Abstract]

Schedule of Accumulated Other Comprehensive Income (Loss)

Changes in accumulated other comprehensive income (loss) by component for the three months ended March 31, 2021 and 2020 were as follows:

						Pension and Other Post-Retirement Benefits Liability, Net of Tax						Cumulative Foreign Currency Exchange, Net of Tax						Total
Balances at December 31, 2020						$	(24)					$	(40)					$	(64)
Net other comprehensive loss attributable to Westlake Chemical Corporation						—						(6)						(6)
Balances at March 31, 2021						$	(24)					$	(46)					$	(70)
Balances at December 31, 2019						$	3					$	(77)					$	(74)
Net other comprehensive loss attributable to Westlake Chemical Corporation						—						(32)						(32)
Balances at March 31, 2020						$	3					$	(109)					$	(106)

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- References

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- Definition

Tabular disclosure of the components of accumulated other comprehensive income (loss).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 30
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6450520&loc=d3e32583-110901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 14A
-URI http://asc.fasb.org/extlink&oid=121641772&loc=SL7669686-108580

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 30
-Section 45
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900

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