Revenue - Revenue Disaggregated by Major Product (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020 |
Disaggregation of Revenue [Line Items] | | | | |
Net sales | $ 1,783 | $ 675 | $ 3,246 | $ 1,806 |
Revenue from product sales | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenue from product sales | 1,774 | 665 | 3,208 | 1,757 |
Gasoline | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenue from product sales | 908 | 300 | 1,657 | 816 |
Distillates | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenue from product sales | 685 | 246 | 1,273 | 720 |
Ammonia | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenue from product sales | 32 | 37 | 42 | 51 |
UAN | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenue from product sales | 87 | 55 | 126 | 102 |
Other urea products | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenue from product sales | 7 | 4 | 11 | 7 |
Freight revenue | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenue from product sales | 14 | 11 | 26 | 24 |
Other | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenue from product sales | 41 | 12 | 73 | 37 |
Crude oil sales | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenue from product sales | 8 | 10 | 37 | 48 |
Other revenue | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Other revenue | 1 | 0 | 1 | 1 |
Operating Segments | Petroleum | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Net sales | 1,648 | 572 | 3,052 | 1,629 |
Operating Segments | Petroleum | Revenue from product sales | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenue from product sales | 1,639 | 562 | 3,014 | 1,580 |
Operating Segments | Petroleum | Gasoline | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenue from product sales | 908 | 300 | 1,657 | 816 |
Operating Segments | Petroleum | Distillates | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenue from product sales | 685 | 246 | 1,273 | 720 |
Operating Segments | Petroleum | Ammonia | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenue from product sales | 0 | 0 | 0 | 0 |
Operating Segments | Petroleum | UAN | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenue from product sales | 0 | 0 | 0 | 0 |
Operating Segments | Petroleum | Other urea products | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenue from product sales | 0 | 0 | 0 | 0 |
Operating Segments | Petroleum | Freight revenue | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenue from product sales | 5 | 4 | 11 | 9 |
Operating Segments | Petroleum | Other | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenue from product sales | 41 | 12 | 73 | 35 |
Operating Segments | Petroleum | Crude oil sales | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenue from product sales | 8 | 10 | 37 | 48 |
Operating Segments | Petroleum | Other revenue | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Other revenue | 1 | 0 | 1 | 1 |
Operating Segments | Nitrogen Fertilizer | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Net sales | 138 | 105 | 199 | 180 |
Operating Segments | Nitrogen Fertilizer | Revenue from product sales | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenue from product sales | 138 | 105 | 199 | 180 |
Operating Segments | Nitrogen Fertilizer | Gasoline | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenue from product sales | 0 | 0 | 0 | 0 |
Operating Segments | Nitrogen Fertilizer | Distillates | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenue from product sales | 0 | 0 | 0 | 0 |
Operating Segments | Nitrogen Fertilizer | Ammonia | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenue from product sales | 32 | 37 | 42 | 51 |
Operating Segments | Nitrogen Fertilizer | UAN | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenue from product sales | 87 | 55 | 126 | 102 |
Operating Segments | Nitrogen Fertilizer | Other urea products | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenue from product sales | 7 | 4 | 11 | 7 |
Operating Segments | Nitrogen Fertilizer | Freight revenue | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenue from product sales | 9 | 7 | 15 | 15 |
Operating Segments | Nitrogen Fertilizer | Other | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenue from product sales | 3 | 2 | 5 | 5 |
Operating Segments | Nitrogen Fertilizer | Crude oil sales | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenue from product sales | 0 | 0 | 0 | 0 |
Operating Segments | Nitrogen Fertilizer | Other revenue | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Other revenue | 0 | 0 | 0 | 0 |
Other / Elimination | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Net sales | (3) | (2) | (5) | (3) |
Other / Elimination | Revenue from product sales | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenue from product sales | (3) | (2) | (5) | (3) |
Other / Elimination | Gasoline | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenue from product sales | 0 | 0 | 0 | 0 |
Other / Elimination | Distillates | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenue from product sales | 0 | 0 | 0 | 0 |
Other / Elimination | Ammonia | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenue from product sales | 0 | 0 | 0 | 0 |
Other / Elimination | UAN | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenue from product sales | 0 | 0 | 0 | 0 |
Other / Elimination | Other urea products | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenue from product sales | 0 | 0 | 0 | 0 |
Other / Elimination | Freight revenue | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenue from product sales | 0 | 0 | 0 | 0 |
Other / Elimination | Other | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenue from product sales | (3) | (2) | (5) | (3) |
Other / Elimination | Crude oil sales | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenue from product sales | 0 | 0 | 0 | 0 |
Other / Elimination | Other revenue | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Other revenue | $ 0 | $ 0 | $ 0 | $ 0 |