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Segment Information (Tables)
 6 Months Ended
Jun. 30, 2018
Segment Reporting [Abstract]  
Segment Reporting Information
 
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
 
2018
 
2017
 
2018
 
2017
Net external sales
 
 
 
 
 
 
 
 
Olefins
 
 
 
 
 
 
 
 
Polyethylene
 
$
387

 
$
358

 
$
756

 
$
744

Styrene, feedstock and other
 
95

 
131

 
229

 
288

Total Olefins
 
482

 
489

 
985

 
1,032

Vinyls
 
 
 
 
 
 
 
 
PVC, caustic soda and other
 
1,396

 
1,157

 
2,754

 
2,288

Building products
 
357

 
333

 
646

 
602

Total Vinyls
 
1,753

 
1,490

 
3,400

 
2,890

 
 
$
2,235

 
$
1,979

 
$
4,385

 
$
3,922

 
 
 
 
 
 
 
 
 
Intersegment sales
 
 
 
 
 
 
 
 
Olefins
 
$
112

 
$
98

 
$
232

 
$
184

Vinyls
 
1

 
—

 
1

 
—

 
 
$
113

 
$
98

 
$
233

 
$
184

 
 
 
 
 
 
 
 
 
 
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
 
2018
 
2017
 
2018
 
2017
Income (loss) from operations
 
 
 
 
 
 
 
 
Olefins
 
$
158

 
$
143

 
$
321

 
$
323

Vinyls
 
271

 
141

 
537

 
211

Corporate and other
 
(25
)
 
(20
)
 
(53
)
 
(36
)
 
 
$
404

 
$
264

 
$
805

 
$
498

 
 
 
 
 
 
 
 
 
Depreciation and amortization
 
 
 
 
 
 
 
 
Olefins
 
$
33

 
$
35

 
$
67

 
$
76

Vinyls
 
120

 
107

 
238

 
214

Corporate and other
 
3

 
3

 
7

 
5

 
 
$
156

 
$
145

 
$
312

 
$
295

 
 
 
 
 
 
 
 
 
Other income, net
 
 
 
 
 
 
 
 
Olefins
 
$
1

 
$
1

 
$
3

 
$
2

Vinyls
 
4

 
—

 
16

 
6

Corporate and other
 
3

 
1

 
11

 
1

 
 
$
8

 
$
2

 
$
30

 
$
9

 
 
 
 
 
 
 
 
 
Provision for (benefit from) income taxes
 
 
 
 
 
 
 
 
Olefins
 
$
36

 
$
36

 
$
73

 
$
94

Vinyls
 
69

 
39

 
130

 
54

Corporate and other
 
(12
)
 
(7
)
 
(21
)
 
(24
)
 
 
$
93

 
$
68

 
$
182

 
$
124

 
 
 
 
 
 
 
 
 
Capital expenditures
 
 
 
 
 
 
 
 
Olefins
 
$
26

 
$
24

 
$
48

 
$
49

Vinyls
 
128

 
114

 
258

 
222

Corporate and other
 
4

 
9

 
6

 
10

 
 
$
158

 
$
147

 
$
312

 
$
281
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 June 30,
 
Six Months Ended June 30,
 
 
2018
 
2017
 
2018
 
2017
Income from operations
 
$
404

 
$
264

 
$
805

 
$
498

Interest expense
 
(31
)
 
(39
)
 
(68
)
 
(79
)
Other income, net
 
8

 
2

 
30

 
9

Income before income taxes
 
$
381

 
$
227

 
$
767

 
$
428
Total Assets
 
 
June 30,
2018
 
December 31,
2017
Total assets
 
 
 
 
Olefins
 
$
2,044

 
$
2,006

Vinyls
 
8,863

 
8,853

Corporate and other
 
439

 
1,217

 
 
$
11,346

 
$
12,076