Revenue - Revenue Disaggregated by Major Product (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Disaggregation of Revenue [Line Items]
Total revenue	$ 1,863	$ 2,286
Revenue from product sales
Disaggregation of Revenue [Line Items]
Revenue from product sales	1,850	2,258
Gasoline
Disaggregation of Revenue [Line Items]
Revenue from product sales	888	1,010
Distillates
Disaggregation of Revenue [Line Items]
Revenue from product sales	777	967
Ammonia
Disaggregation of Revenue [Line Items]
Revenue from product sales	37	38
UAN
Disaggregation of Revenue [Line Items]
Revenue from product sales	76	164
Urea products
Disaggregation of Revenue [Line Items]
Revenue from product sales	5	8
Freight revenue
Disaggregation of Revenue [Line Items]
Revenue from product sales	11	14
Other products
Disaggregation of Revenue [Line Items]
Revenue from product sales	56	57
Crude oil sales
Disaggregation of Revenue [Line Items]
Revenue from product sales	13	28
Petroleum Segment
Disaggregation of Revenue [Line Items]
Total revenue	1,718	1,987
Nitrogen Fertilizer Segment
Disaggregation of Revenue [Line Items]
Total revenue	128	226
Operating Segments | Petroleum Segment
Disaggregation of Revenue [Line Items]
Total revenue	1,722	1,993
Operating Segments | Petroleum Segment | Revenue from product sales
Disaggregation of Revenue [Line Items]
Revenue from product sales	1,709	1,965
Operating Segments | Petroleum Segment | Gasoline
Disaggregation of Revenue [Line Items]
Revenue from product sales	888	1,010
Operating Segments | Petroleum Segment | Distillates
Disaggregation of Revenue [Line Items]
Revenue from product sales	767	919
Operating Segments | Petroleum Segment | Ammonia
Disaggregation of Revenue [Line Items]
Revenue from product sales	0	0
Operating Segments | Petroleum Segment | UAN
Disaggregation of Revenue [Line Items]
Revenue from product sales	0	0
Operating Segments | Petroleum Segment | Urea products
Disaggregation of Revenue [Line Items]
Revenue from product sales	0	0
Operating Segments | Petroleum Segment | Freight revenue
Disaggregation of Revenue [Line Items]
Revenue from product sales	5	3
Operating Segments | Petroleum Segment | Other products
Disaggregation of Revenue [Line Items]
Revenue from product sales	49	33
Operating Segments | Petroleum Segment | Crude oil sales
Disaggregation of Revenue [Line Items]
Revenue from product sales	13	28
Operating Segments | Nitrogen Fertilizer Segment
Disaggregation of Revenue [Line Items]
Total revenue	128	226
Operating Segments | Nitrogen Fertilizer Segment | Revenue from product sales
Disaggregation of Revenue [Line Items]
Revenue from product sales	128	226
Operating Segments | Nitrogen Fertilizer Segment | Gasoline
Disaggregation of Revenue [Line Items]
Revenue from product sales	0	0
Operating Segments | Nitrogen Fertilizer Segment | Distillates
Disaggregation of Revenue [Line Items]
Revenue from product sales	0	0
Operating Segments | Nitrogen Fertilizer Segment | Ammonia
Disaggregation of Revenue [Line Items]
Revenue from product sales	37	38
Operating Segments | Nitrogen Fertilizer Segment | UAN
Disaggregation of Revenue [Line Items]
Revenue from product sales	76	164
Operating Segments | Nitrogen Fertilizer Segment | Urea products
Disaggregation of Revenue [Line Items]
Revenue from product sales	5	8
Operating Segments | Nitrogen Fertilizer Segment | Freight revenue
Disaggregation of Revenue [Line Items]
Revenue from product sales	6	11
Operating Segments | Nitrogen Fertilizer Segment | Other products
Disaggregation of Revenue [Line Items]
Revenue from product sales	4	5
Operating Segments | Nitrogen Fertilizer Segment | Crude oil sales
Disaggregation of Revenue [Line Items]
Revenue from product sales	0	0
Other / Elimination
Disaggregation of Revenue [Line Items]
Total revenue	13	67
Other / Elimination | Revenue from product sales
Disaggregation of Revenue [Line Items]
Revenue from product sales	13	67
Other / Elimination | Gasoline
Disaggregation of Revenue [Line Items]
Revenue from product sales	0	0
Other / Elimination | Distillates
Disaggregation of Revenue [Line Items]
Revenue from product sales	10	48
Other / Elimination | Ammonia
Disaggregation of Revenue [Line Items]
Revenue from product sales	0	0
Other / Elimination | UAN
Disaggregation of Revenue [Line Items]
Revenue from product sales	0	0
Other / Elimination | Urea products
Disaggregation of Revenue [Line Items]
Revenue from product sales	0	0
Other / Elimination | Freight revenue
Disaggregation of Revenue [Line Items]
Revenue from product sales	0	0
Other / Elimination | Other products
Disaggregation of Revenue [Line Items]
Revenue from product sales	3	19
Other / Elimination | Crude oil sales
Disaggregation of Revenue [Line Items]
Revenue from product sales	$ 0	$ 0