v3.26.3
Consolidated Statements of Changes in Equity - USD ($)
$ in Thousands
Total
Noncontrolling Interest in OpCo
Westlake
General Partner
Common units
Publicly and Privately Held
Limited Partner
Common units
Westlake
Limited Partner
Total equity at Dec. 31, 2024 $ 829,314 $ 553,185 $ (242,572) $ 471,328 $ 47,373
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net income 42,309 37,361 0 2,965 1,983
Distribution to unitholders (16,611) 0 0 (9,954) (6,657)
Distribution to noncontrolling interest retained in OpCo by Westlake (51,906) (51,906) 0 0 0
Total equity at Mar. 31, 2025 803,106 538,640 (242,572) 464,339 42,699
Total equity at Dec. 31, 2024 829,314 553,185 (242,572) 471,328 47,373
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net income 214,318        
Total equity at Sep. 30, 2025 813,311 552,699 (242,572) 462,093 41,091
Total equity at Mar. 31, 2025 803,106 538,640 (242,572) 464,339 42,699
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net income 85,795 71,237 0 8,724 5,834
Distribution to unitholders (16,611) 0 0 (9,954) (6,657)
Distribution to noncontrolling interest retained in OpCo by Westlake (41,125) (41,125) 0 0 0
Total equity at Jun. 30, 2025 831,165 568,752 (242,572) 463,109 41,876
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net income 86,214 71,561 0 8,781 5,872
Units issued for vested phantom units 161 0 0 161 0
Distribution to unitholders (16,615) 0 0 (9,958) (6,657)
Distribution to noncontrolling interest retained in OpCo by Westlake (87,614) (87,614) 0 0 0
Total equity at Sep. 30, 2025 813,311 552,699 (242,572) 462,093 41,091
Total equity at Dec. 31, 2025 802,352 543,816 (242,572) 460,848 40,260
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net income 81,655 67,486 0 8,492 5,677
Distribution to unitholders (16,615) 0 0 (9,958) (6,657)
Distribution to noncontrolling interest retained in OpCo by Westlake (75,006) (75,006) 0 0 0
Total equity at Mar. 31, 2026 792,386 536,296 (242,572) 459,382 39,280
Total equity at Dec. 31, 2025 802,352 543,816 (242,572) 460,848 40,260
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net income 254,874        
Total equity at Sep. 30, 2026 770,285 516,811 (242,572) 457,877 38,169
Total equity at Mar. 31, 2026 792,386 536,296 (242,572) 459,382 39,280
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net income 82,362 68,124 0 8,533 5,705
Distribution to unitholders (16,615) 0 0 (9,958) (6,657)
Distribution to noncontrolling interest retained in OpCo by Westlake (88,720) (88,720) 0 0 0
Total equity at Jun. 30, 2026 769,413 515,700 (242,572) 457,957 38,328
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net income 90,857 74,638 0 9,721 6,498
Units issued for vested phantom units 160 0 0 160 0
Distribution to unitholders (16,618) 0 0 (9,961) (6,657)
Distribution to noncontrolling interest retained in OpCo by Westlake (73,527) (73,527) 0 0 0
Total equity at Sep. 30, 2026 $ 770,285 $ 516,811 $ (242,572) $ 457,877 $ 38,169