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Segment Information (Tables)
 9 Months Ended
Sep. 30, 2021
Segment Reporting [Abstract]  
Segment Reporting Information
Three Months Ended September 30,Nine Months Ended September 30,
2021202020212020
Net external sales
Vinyls
PVC, caustic soda and other$1,834 $1,116 $4,950 $3,333 
Building products514 413 1,406 1,049 
Total Vinyls2,348 1,529 6,356 4,382 
Olefins
Polyethylene559 302 1,488 914 
Styrene, feedstock and other148 67 427 243 
Total Olefins707 369 1,915 1,157 
$3,055 $1,898 $8,271 $5,539 
Intersegment sales
Vinyls$— $— $— $1 
Olefins163 79 447 183 
$163 $79 $447 $184 
Income (loss) from operations
Vinyls$601 $42 $1,236 $135 
Olefins281 51 738 138 
Corporate and other(21)(14)(47)(22)
$861 $79 $1,927 $251 
Depreciation and amortization
Vinyls$166 $160 $486 $467 
Olefins36 34 109 104 
Corporate and other1 2 5 6 
$203 $196 $600 $577 
Other income, net
Vinyls$10 $7 $27 $21 
Olefins— 1 2 2 
Corporate and other3 4 6 9 
$13 $12 $35 $32 
Provision for (benefit from) income taxes
Vinyls$141 $(25)$279 $(121)
Olefins66 4 170 41 
Corporate and other(14)6 (26)5 
$193 $(15)$423 $(75)
Three Months Ended September 30,Nine Months Ended September 30,
2021202020212020
Capital expenditures
Vinyls$124 $94 $346 $338 
Olefins19 16 66 60 
Corporate and other1 2 2 5 
$144 $112 $414 $403 
Reconciliation Of Total Segment Income From Operations To Consolidated Income Before Income Taxes
A reconciliation of total segment income from operations to consolidated income before income taxes is as follows:
Three Months Ended September 30,Nine Months Ended September 30,
2021202020212020
Income from operations$861 $79 $1,927 $251 
Interest expense(61)(37)(130)(108)
Other income, net13 12 35 32 
Income before income taxes$813 $54 $1,832 $175 
Total Assets
September 30,
2021		December 31,
2020
Total assets
Vinyls$11,655 $10,680 
Olefins2,153 1,923 
Corporate and other3,300 1,232 
$17,108 $13,835