Business Segments (Tables)

12 Months Ended

Dec. 31, 2020

Segment Reporting [Abstract]

Schedule of segment information

The following tables summarize operating results, capital expenditures, and total asset information by segment:

	Year Ended December 31,
(in millions)	2020		2019		2018
Net sales
Petroleum	$	3,586	$	5,968	$	6,780
Nitrogen Fertilizer	350		404		351
Other	(6)		(8)		(7)
Total	$	3,930	$	6,364	$	7,124
Operating (loss) income
Petroleum	$	(281)	$	574	$	544
Nitrogen Fertilizer	(35)		27		6
Other	(17)		(21)		(18)
Total	(333)		580		532
Interest expense, net	(130)		(102)		(102)
Investment income from marketable securities	41		—		—
Other income, net	7		13		15
(Loss) income before income taxes	$	(415)	$	491	$	445
Depreciation and amortization
Petroleum	$	202	$	202	$	196
Nitrogen Fertilizer	76		80		72
Other	—		5		6
Total	$	278	$	287	$	274
Capital expenditures (1)
Petroleum	$	90	$	89	$	89
Nitrogen fertilizer	16		20		19
Other	15		5		3
Total	$	121	$	114	$	111

The following table summarizes total assets by segment:

	December 31,
(in millions)	2020		2019
Petroleum	$	2,991	$	3,187
Nitrogen Fertilizer	1,033		1,138
Other (2)	(46)		(420)
Total assets	$	3,978	$	3,905

(1)Capital expenditures are shown exclusive of capitalized turnaround expenditures.

(2)Includes elimination of intercompany assets and net cash proceeds from the Notes issued during the year ended December 31, 2020.