Accumulated Other Comprehensive Income (Loss) (Tables)

6 Months Ended

Jun. 30, 2022

Equity [Abstract]

Schedule of Accumulated Other Comprehensive Income (Loss)

Changes in accumulated other comprehensive income (loss) by component for the six months ended June 30, 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	1		(81)		(80)
Balances at June 30, 2022	$	21	$	(137)	$	(116)
Balances at December 31, 2020	$	(24)	$	(40)	$	(64)
Other comprehensive income attributable to Westlake Corporation	—		8		8
Balances at June 30, 2021	$	(24)	$	(32)	$	(56)