Consolidated Balance Sheets (Unaudited) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Current assets
Cash and cash equivalents	$ 2,414	$ 2,228
Accounts receivable, net	1,835	1,801
Inventories	1,842	1,866
Prepaid expenses and other current assets	55	78
Total current assets	6,146	5,973
Property, plant and equipment, net	8,518	8,525
Operating lease right-of-use assets	643	615
Goodwill	2,167	2,161
Customer relationships, net	974	993
Other intangible assets, net	565	572
Equity method investments	1,131	1,142
Other assets, net	662	569
Total assets	20,806	20,550
Current liabilities
Accounts payable	828	889
Accrued and other liabilities	1,331	1,409
Total current liabilities	2,159	2,298
Long-term debt, net	4,892	4,879
Deferred income taxes	1,716	1,735
Pension and other post-retirement benefits	357	355
Operating lease liabilities	531	504
Other liabilities	323	314
Total liabilities	9,978	10,085
Commitments and contingencies (Note 14)
Stockholders' equity
Preferred stock, $0.01 par value, 50,000,000 shares authorized; no shares issued and outstanding	0	0
Common stock, $0.01 par value, 300,000,000 shares authorized; 134,651,380 and 134,651,380 shares issued at March 31, 2023 and December 31, 2022, respectively	1	1
Common stock, held in treasury, at cost; 7,010,989 and 7,278,651 shares at March 31, 2023 and December 31, 2022, respectively	(465)	(467)
Additional paid-in capital	590	601
Retained earnings	10,232	9,885
Accumulated other comprehensive loss	(67)	(89)
Total Westlake Corporation stockholders' equity	10,291	9,931
Noncontrolling interests	537	534
Total equity	10,828	10,465
Total liabilities and equity	$ 20,806	$ 20,550