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Business Segments (Tables)
3 Months Ended
Mar. 31, 2021
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
March 31,
(in millions)20212020
Net sales
Petroleum$1,404 $1,057 
Nitrogen Fertilizer61 75 
Other, including intersegment eliminations(2)(2)
Total$1,463 $1,130 
Operating loss
Petroleum$(115)$(127)
Nitrogen Fertilizer(14)(5)
Other, including intersegment eliminations(6)(3)
Total(135)(135)
Interest expense, net(31)(35)
Investment income on marketable securities62 31 
Other income, net7 
Loss before income tax benefit$(97)$(137)
Depreciation and amortization
Petroleum$51 $48 
Nitrogen Fertilizer14 16 
Other1 — 
Total$66 $64 
Capital expenditures (1)
Petroleum$10 $40 
Nitrogen Fertilizer3 
Other (2)55 
Total$68 $48 

The following table summarizes total assets by segment:
(in millions)March 31, 2021December 31, 2020
Petroleum$3,207 $2,991 
Nitrogen Fertilizer1,032 1,033 
Other, including intersegment eliminations(51)(46)
Total Assets$4,188 $3,978 

(1)Capital expenditures are shown exclusive of capitalized turnaround expenditures and business combinations.
(2)Other includes amounts incurred for the Wynnewood renewable diesel unit project.