Consolidated Balance Sheets (Unaudited) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Current assets
Cash and cash equivalents	$ 1,217	$ 728
Accounts receivable, net	1,293	1,036
Inventories	829	936
Prepaid expenses and other current assets	42	42
Total current assets	3,381	2,742
Property, plant and equipment, net	6,853	6,912
Operating lease right-of-use assets	460	443
Goodwill	1,075	1,074
Customer relationships, net	461	523
Other intangible assets, net	171	187
Equity method investments	1,046	1,112
Other assets, net	247	268
Total assets	13,694	13,261
Current liabilities
Accounts payable	447	473
Accrued and other liabilities	771	768
Total current liabilities	1,218	1,241
Long-term debt, net	3,681	3,445
Deferred income taxes	1,403	1,255
Pension and other post-retirement benefits	350	360
Operating lease liabilities	373	355
Other liabilities	181	202
Total liabilities	7,206	6,858
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 September 30, 2020 and December 31, 2019, respectively	1	1
Common stock, held in treasury, at cost; 6,930,624 and 6,266,609 shares at September 30, 2020 and December 31, 2019, respectively	(409)	(377)
Additional paid-in capital	563	553
Retained earnings	5,863	5,757
Accumulated other comprehensive loss	(69)	(74)
Total Westlake Chemical Corporation stockholders' equity	5,949	5,860
Noncontrolling interests	539	543
Total equity	6,488	6,403
Total liabilities and equity	$ 13,694	$ 13,261