Consolidated Balance Sheets (Unaudited) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Current assets
Cash and cash equivalents	$ 3,108	$ 3,304
Accounts receivable, net	1,691	1,601
Inventories	1,661	1,622
Prepaid expenses and other current assets	66	82
Total current assets	6,526	6,609
Property, plant and equipment, net	8,523	8,519
Operating lease right-of-use assets	706	697
Goodwill	2,037	2,041
Customer relationships, net	889	910
Other intangible assets, net	481	493
Equity method investments	1,104	1,115
Other assets, net	694	651
Total assets	20,960	21,035
Current liabilities
Accounts payable	891	877
Accrued and other liabilities	1,464	1,614
Current portion of long-term debt, net	300	299
Total current liabilities	2,655	2,790
Long-term debt, net	4,590	4,607
Deferred income taxes	1,544	1,560
Pension and other post-retirement benefits	353	363
Operating lease liabilities	622	611
Other liabilities	343	340
Total liabilities	10,107	10,271
Commitments and contingencies (Note 13)
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, 2024 and December 31, 2023, respectively	1	1
Common stock, held in treasury, at cost; 6,082,171 and 6,439,289 shares at March 31, 2024 and December 31, 2023, respectively	(414)	(435)
Additional paid-in capital	624	630
Retained earnings	10,252	10,143
Accumulated other comprehensive loss	(132)	(98)
Total Westlake Corporation stockholders' equity	10,331	10,241
Noncontrolling interests	522	523
Total equity	10,853	10,764
Total liabilities and equity	$ 20,960	$ 21,035