Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Current assets
Cash and cash equivalents	$ 1,908	$ 1,313
Accounts receivable, net	1,868	1,214
Inventories	1,407	918
Prepaid expenses and other current assets	80	32
Total current assets	5,263	3,477
Property, plant and equipment, net	7,606	6,920
Operating lease right-of-use assets	562	461
Goodwill	2,024	1,083
Customer relationships, net	1,083	444
Other intangible assets, net	497	168
Equity method investments	1,007	1,059
Other assets, net	417	223
Total assets	18,459	13,835
Current liabilities
Accounts payable	879	536
Accrued and other liabilities	1,196	821
Current portion of long-term debt, net	269	0
Total current liabilities	2,344	1,357
Long-term debt, net	4,911	3,566
Deferred income taxes	1,681	1,368
Pension and other post-retirement benefits	291	391
Operating lease liabilities	461	376
Other liabilities	243	199
Total liabilities	9,931	7,257
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 December 31, 2021 and 2020, respectively	1	1
Common stock, held in treasury, at cost; 6,735,639 and 6,821,174 shares at December 31, 2021 and 2020, respectively	(399)	(401)
Additional paid-in capital	581	569
Retained earnings	7,808	5,938
Accumulated other comprehensive loss	(36)	(64)
Total Westlake Corporation stockholders' equity	7,955	6,043
Noncontrolling interests	573	535
Total equity	8,528	6,578
Total liabilities and equity	$ 18,459	$ 13,835