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Derivatives (Tables) | 12 Months Ended
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Dec. 31, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
Schedule of derivative assets and liabilities at fair value | The following table sets forth the Company's derivative assets and liabilities that were accounted for at fair value and not designated as cash flow hedges as of December 31, 2020 and 2019:
| Asset Fair Value
| 2020 |  | 2019
Commodity contracts (1) | $ | 12.8 |  |  | $ | 19.7 |
Foreign exchange contracts (2) | 2.4 |  |  | — |
Total | $ | 15.2 |  |  | $ | 19.7 |
| Liability Fair Value
| 2020 |  | 2019
Commodity contracts (1) | $ | 16.7 |  |  | $ | 3.6 |
Foreign exchange contracts (2) | — |  |  | 0.6 |
Total | $ | 16.7 |  |  | $ | 4.2 |
(1) Commodity contracts reflect our outstanding LME forward financial sales contracts, MWP forward financial sales contracts, fixed for floating swaps, NYMEX Henry Hub natural gas price swaps, and Nord Pool power price swaps. At December 31, 2020, $1.2 million of Due from affiliates, $1.7 million of Due from affiliates - less current portion, $11.3 million of Due to affiliates, and $0.1 million of Due to affiliates – less current portion is related to commodity contract assets and liabilities with Glencore. At December 31, 2019, $0.2 million of Due from affiliates and $0.5 million Due from affiliates - less current portion was related to commodity contract assets with Glencore. (2) Foreign exchange contracts reflect our outstanding FX swaps.
Schedule of net gain (loss) on forward and derivative contracts | The following table summarizes the net gain (loss) on forward and derivative contracts for the years ended December 31, 2020, 2019, and 2018:
| Year Ended December 31,
| 2020 |  | 2019 |  | 2018
Commodity contracts (1) | $ | (16.3) |  |  | $ | 12.9 |  |  | $ | 6.6 |
Foreign exchange contracts | (1.0) |  |  | (0.9) |  |  | (0.3) |
Total | $ | (17.3) |  |  | $ | 12.0 |  |  | $ | 6.3 |
(1) For the years ended December 31, 2020, 2019, and 2018, $(9.2) million, $2.0 million, and $(2.2) million of net gain (loss), respectively, was with Glencore.

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- Definition Tabular disclosure of pertinent information about a derivative or group of derivatives on a disaggregated basis, such as for individual instruments, or small groups of similar instruments. May include a combination of the type of instrument, risks being hedged, notional amount, hedge designation, related hedged item, inception date, maturity date, or other relevant item. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5624163-113959 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5580258-113959 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=121590274&loc=d3e41620-113959 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5579245-113959 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=121590274&loc=d3e41638-113959 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=121590274&loc=d3e41678-113959 Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=121590274&loc=d3e41641-113959 Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5624171-113959 Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5579240-113959 + Details
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