Accumulated Other Comprehensive Income (Loss) (Tables)

3 Months Ended

Mar. 31, 2022

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, 2022 and 2021 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, 2021	$	20	$	(56)	$	(36)
Other comprehensive loss attributable to Westlake Corporation	—		(9)		(9)
Balances at March 31, 2022	$	20	$	(65)	$	(45)
Balances at December 31, 2020	$	(24)	$	(40)	$	(64)
Other comprehensive loss attributable to Westlake Corporation	—		(6)		(6)
Balances at March 31, 2021	$	(24)	$	(46)	$	(70)