Accumulated Other Comprehensive Income (Loss) (Notes)

3 Months Ended

Mar. 31, 2022

Equity [Abstract]

Accumulated Other Comprehensive Income (Loss)

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)