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Business Segments (Tables)
9 Months Ended
Sep. 30, 2019
Segment Reporting [Abstract]  
Operating results and capital expenditures information by segment
The following table summarizes certain operating results and capital expenditures information by segment:
 
Three Months Ended
September 30,
 
Nine Months Ended
September 30,
(in millions)
2019
 
2018
 
2019
 
2018
Net sales
 
 
 
 
 
 
 
Petroleum
$
1,535

 
$
1,857

 
$
4,484

 
$
5,139

Nitrogen Fertilizer
89

 
80

 
318

 
253

Other
(2
)
 
(2
)
 
(8
)
 
(6
)
Total
$
1,622

 
$
1,935

 
$
4,794

 
$
5,386

Operating Income
 
 
 
 
 
 
 
Petroleum
$
173

 
$
167

 
$
492

 
$
424

Nitrogen Fertilizer
(8
)
 
3

 
36

 
(2
)
Other
(6
)
 
(4
)
 
(17
)
 
(13
)
Total
159

 
166

 
511

 
409

Interest expense, net
(26
)
 
(26
)
 
(77
)
 
(79
)
Other income, net
5

 
3

 
10

 
6

Income before income taxes
$
138

 
$
143

 
$
444

 
$
336

Depreciation and amortization
 
 
 
 
 
 
 
Petroleum
$
51

 
$
49

 
$
152

 
$
146

Nitrogen Fertilizer
18

 
16

 
60

 
53

Other
2

 
1

 
5

 
5

Total
$
71

 
$
66

 
$
217

 
$
204

Capital expenditures (1)
 
 
 
 
 
 
 
Petroleum
$
27

 
$
22

 
$
65

 
$
51

Nitrogen Fertilizer
7

 
5

 
12

 
16

Other

 
1

 
4

 
3

Total
$
34

 
$
28

 
$
81

 
$
70


The following table summarizes total assets by segment:
(in millions)
September 30, 2019
 
December 31, 2018
Petroleum
$
3,076

 
$
2,453

Nitrogen Fertilizer
1,180

 
1,254

Other (2)
(294
)
 
293

Total Assets
$
3,962

 
$
4,000


 
(1)Capital expenditures are shown exclusive of turnarounds.
(2)Includes elimination of intercompany assets.