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Industry Segments (Tables)
 9 Months Ended
Sep. 30, 2019
Segment Reporting [Abstract]  
Schedule of industry segments The following tables present Occidental’s industry segments:
millions
 
Oil
and
Gas
 
Chemical
 
Marketing and Other Midstream
 
WES Midstream (a)
 
Corporate and Eliminations
 
Total
Three months ended
September 30, 2019
 
 
 
 
 
 
 
 
 
 
 
 
Net sales
 
$
3,821

 
$
1,071

 
$
780

 
$
383

 
$
(368
)
 
$
5,687

Income (loss) from continuing operations before income taxes
 
$
221

 
$
207

 
$
266

 
$
134

 
$
(1,449
)
(b) 
$
(621
)
Income tax expense
 
—

 
—

 
—

 
—

 
(116
)
 
(116
)
Income (loss) from continuing operations
 
$
221

 
$
207

 
$
266

 
$
134

 
$
(1,565
)
 
$
(737
)
 
 
 
 
 
 
 
 
 
 
 
 
 
Three months ended
September 30, 2018
 
 
 
 
 
 
 
 
 
 
 
 
Net sales
 
$
2,889

 
$
1,185

 
$
1,367

 
$
—

 
$
(225
)
 
$
5,216

Income (loss) from continuing operations before income taxes
 
$
767

 
$
321

 
$
1,698

 
$
—

 
$
(207
)
 
$
2,579

Income tax expense
 
—

 
—

 
—

 
—

 
(710
)
 
(710
)
Income (loss) from continuing operations
 
$
767

 
$
321

 
$
1,698

 
$
—

 
$
(917
)
 
$
1,869

 
 
 
 
 
 
 
 
 
 
 
 
 
Nine months ended
September 30, 2019
 
 
 
 
 
 
 
 
 
 
 
 
Net sales
 
$
8,890

 
$
3,128

 
$
2,505

 
$
383

 
$
(795
)
 
$
14,111

Income (loss) from continuing operations before income taxes
 
$
1,431

 
$
680

 
$
876

 
$
134

 
$
(1,945
)
(b) 
$
1,176

Income tax expense
 
—

 
—

 
—

 


 
(647
)
 
(647
)
Income (loss) from continuing operations
 
$
1,431

 
$
680

 
$
876

 
$
134

 
$
(2,592
)
 
$
529

 
 
 
 
 
 
 
 
 
 
 
 
 
Nine months ended
September 30, 2018
 
 
 
 
 
 
 
 
 
 
 
 
Net sales
 
$
7,874

 
$
3,515

 
$
2,359

 
$
—

 
$
(686
)
 
$
13,062

Income (loss) from continuing operations before income taxes
 
$
2,297

 
$
936

 
$
2,127

 
$
—

 
$
(584
)
 
$
4,776

Income tax expense
 
—

 
—

 
—

 


 
(1,351
)
 
(1,351
)
Income (loss) from continuing operations
 
$
2,297

 
$
936

 
$
2,127

 
$
—

 
$
(1,935
)
 
$
3,425



(a) The WES Midstream segment results represent the period from August 8, 2019, the Merger date, through September 30, 2019.
(b) The three months ended September 30, 2019 includes merger-related costs of $924 million and amortized debt financing fees of $65 million. The nine months ended September 30, 2019 includes merger-related costs of $974 million and amortized debt financing fees of $122 million.