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Business Segments (Tables)
9 Months Ended
Sep. 30, 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
September 30,
Nine Months Ended
September 30,
(in millions)2021202020212020
Net sales
Petroleum$1,742 $927 $4,793 $2,556 
Nitrogen Fertilizer145 79 344 260 
Other, including intersegment eliminations(4)(1)(8)(5)
Total$1,883 $1,005 $5,129 $2,811 
Operating income (loss)
Petroleum$135 $(39)$(1)$(161)
Nitrogen Fertilizer46 (3)63 (34)
Other, including intersegment eliminations(6)(4)(16)(11)
Total175 (46)46 (206)
Interest expense, net(23)(31)(92)(98)
Investment (loss) income on marketable securities(1)(65)82 (13)
Other income, net2 12 
Income (loss) before income tax expense$153 $(139)$48 $(314)
Depreciation and amortization
Petroleum$50 $51 $152 $150 
Nitrogen Fertilizer18 18 53 57 
Other(1)—  
Total$67 $69 $205 $208 
Capital expenditures (1)
Petroleum$12 $17 $31 $80 
Nitrogen Fertilizer7 14 13 
Other (2)19 144 
Total$38 $23 $189 $96 

The following table summarizes total assets by segment:
(in millions)September 30, 2021December 31, 2020
Petroleum$3,365 $2,991 
Nitrogen Fertilizer1,068 1,033 
Other, including intersegment eliminations(561)(46)
Total Assets$3,872 $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.