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Industry Segments (Tables)
 3 Months Ended
Mar. 31, 2019
Segment Reporting [Abstract]  
Schedule of industry segments
The following tables present Occidental’s industry segments (in millions):
 
 
Oil
 
 
 
Midstream
 
Corporate
 
 
 
 
and
 
 
 
and
 
and
 
 
 
 
Gas
 
Chemical
 
Marketing
 
Eliminations
 
Total
Three months ended March 31, 2019
 
 
 
 
 
 
 
 
 
 
Net sales
 
$
2,351

 
$
1,059

 
$
816

 
$
(222
)
 
$
4,004

Pre-tax operating profit (loss)
 
$
484

 
$
265

 
$
279

 
$
(172
)
(a) 
$
856

Income taxes
 
—

 
—

 
—

 
(225
)
(b) 
(225
)
Net income (loss)
 
$
484

 
$
265

 
$
279

 
$
(397
)
 
$
631

 
 
 
 
 
 
 
 
 
 
 
Three months ended March 31, 2018
 
 
 
 
 
 
 
 
 
 
Net sales
 
$
2,454

 
$
1,154

 
$
389

 
$
(234
)
 
$
3,763

Pre-tax operating profit (loss)
 
$
750

 
$
298

 
$
179

 
$
(180
)
(a) 
$
1,047

Income taxes
 
—

 
—

 
—

 
(339
)
(b) 
(339
)
Net income (loss)
 
$
750

 
$
298

 
$
179

 
$
(519
)
 
$
708


(a) Includes unallocated net interest expense, administration expense, environmental remediation and other items.
(b) Includes all foreign and domestic income taxes.