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Revenue Recognition | 12 Months Ended
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Dec. 31, 2021
Revenue Recognition [Abstract] |
Revenue Recognition | Revenue Recognition Disaggregation of Revenues Revenue by product type and market is set forth in the following tables. With respect to its seaborne mining segments, the Company classifies as “Export” certain revenue from domestically-delivered coal under contracts in which the price is derived on a basis similar to export contracts.
| Year Ended December 31, 2021
| Seaborne Thermal Mining |  | Seaborne Metallurgical Mining |  | Powder River Basin Mining |  | Other U.S. Thermal Mining |  | Corporate and Other (1) |  | Consolidated
| (Dollars in millions)
Thermal coal |  |  |  |  |  |  |  |  |  |  |
Domestic | $ | 173.5 |  |  | $ | — |  |  | $ | 970.7 |  |  | $ | 669.9 |  |  | $ | — |  |  | $ | 1,814.1 |
Export | 759.0 |  |  | — |  |  | — |  |  | 10.0 |  |  | — |  |  | 769.0 |
Total thermal | 932.5 |  |  | — |  |  | 970.7 |  |  | 679.9 |  |  | — |  |  | 2,583.1 |
Metallurgical coal |  |  |  |  |  |  |  |  |  |  |
Export | — |  |  | 719.8 |  |  | — |  |  | — |  |  | — |  |  | 719.8 |
Total metallurgical | — |  |  | 719.8 |  |  | — |  |  | — |  |  | — |  |  | 719.8 |
Other (2) | 1.5 |  |  | 7.9 |  |  | 0.5 |  |  | 9.2 |  |  | (3.7) |  |  | 15.4 |
Revenues | $ | 934.0 |  |  | $ | 727.7 |  |  | $ | 971.2 |  |  | $ | 689.1 |  |  | $ | (3.7) |  |  | $ | 3,318.3 |
| Year Ended December 31, 2020
| Seaborne Thermal Mining |  | Seaborne Metallurgical Mining |  | Powder River Basin Mining |  | Other U.S. Thermal Mining |  | Corporate and Other (1) |  | Consolidated
| (Dollars in millions)
Thermal coal |  |  |  |  |  |  |  |  |  |  |
Domestic | $ | 145.5 |  |  | $ | — |  |  | $ | 993.9 |  |  | $ | 675.2 |  |  | $ | — |  |  | $ | 1,814.6 |
Export | 564.8 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 564.8 |
Total thermal | 710.3 |  |  | — |  |  | 993.9 |  |  | 675.2 |  |  | — |  |  | 2,379.4 |
Metallurgical coal |  |  |  |  |  |  |  |  |  |  |
Export | — |  |  | 484.3 |  |  | — |  |  | — |  |  | — |  |  | 484.3 |
Total metallurgical | — |  |  | 484.3 |  |  | — |  |  | — |  |  | — |  |  | 484.3 |
Other (2) | 1.5 |  |  | 2.2 |  |  | (2.8) |  |  | 32.1 |  |  | (15.6) |  |  | 17.4 |
Revenues | $ | 711.8 |  |  | $ | 486.5 |  |  | $ | 991.1 |  |  | $ | 707.3 |  |  | $ | (15.6) |  |  | $ | 2,881.1 |
| Year Ended December 31, 2019
| Seaborne Thermal Mining |  | Seaborne Metallurgical Mining |  | Powder River Basin Mining |  | Other U.S. Thermal Mining |  | Corporate and Other (1) |  | Consolidated
| (Dollars in millions)
Thermal coal |  |  |  |  |  |  |  |  |  |  |
Domestic | $ | 147.9 |  |  | $ | — |  |  | $ | 1,208.9 |  |  | $ | 1,274.2 |  |  | $ | — |  |  | $ | 2,631.0 |
Export | 822.4 |  |  | — |  |  | — |  |  | 11.3 |  |  | — |  |  | 833.7 |
Total thermal | 970.3 |  |  | — |  |  | 1,208.9 |  |  | 1,285.5 |  |  | — |  |  | 3,464.7 |
Metallurgical coal |  |  |  |  |  |  |  |  |  |  |
Export | — |  |  | 1,030.0 |  |  | — |  |  | — |  |  | — |  |  | 1,030.0 |
Total metallurgical | — |  |  | 1,030.0 |  |  | — |  |  | — |  |  | — |  |  | 1,030.0 |
Other (2) | 1.4 |  |  | 3.1 |  |  | 19.8 |  |  | 23.9 |  |  | 80.5 |  |  | 128.7 |
Revenues | $ | 971.7 |  |  | $ | 1,033.1 |  |  | $ | 1,228.7 |  |  | $ | 1,309.4 |  |  | $ | 80.5 |  |  | $ | 4,623.4 |
(1) Corporate and Other revenue includes net losses of $113.7 million and $34.5 million and a net gain of $50.6 million related to unrealized mark-to-market adjustments on derivatives related to forecasted sales and other financial trading activity during the years ended December 31, 2021, 2020 and 2019, respectively. Refer to Note 7. “Derivatives and Fair Value Measurements” for additional information. Also included in Corporate and Other revenue are revenues with customers of $139.5 million, $(28.9) million and $(17.6) million during the years ended December 31, 2021, 2020 and 2019, respectively. (2) Other includes revenues from arrangements such as customer contract-related payments associated with volume shortfalls, royalties related to coal lease agreements, sales agency commissions, farm income and property and facility rentals. The Company recorded revenue related to delivered coal to customers of approximately $3,442 million, $2,835 million and $4,477 million during the years ended December 31, 2021, 2020 and 2019, respectively. Such amounts exclude unrealized and realized gains and losses on derivative contracts related to forecasted sales and certain other revenues unrelated to delivered coal. Committed Revenue from Contracts with Customers The Company expects to recognize revenue subsequent to December 31, 2021 of approximately $5.3 billion related to contracts with customers in which volumes and prices per ton were fixed or reasonably estimable at December 31, 2021. Approximately 46% of such amount is expected to be recognized over the next twelve months and the remainder thereafter. Actual revenue related to such contracts may differ materially for various reasons, including price adjustment features for coal quality and cost escalations, volume optionality provisions and potential force majeure events. This estimate of future revenue does not include any revenue related to contracts with variable prices per ton that cannot be reasonably estimated, such as the majority of seaborne metallurgical and seaborne thermal coal contracts where pricing is negotiated or settled quarterly or annually. Accounts Receivable “Accounts receivable, net” at December 31, 2021 and 2020 consisted of the following:
| December 31,
| 2021 |  | 2020
| (Dollars in millions)
Trade receivables, net | $ | 307.0 |  |  | $ | 180.9 |
Miscellaneous receivables, net | 43.5 |  |  | 63.9 |
Accounts receivable, net | $ | 350.5 |  |  | $ | 244.8 |
None of the above receivables included allowances for credit losses at December 31, 2021 or 2020. No charges for credit losses were recognized during the years ended December 31, 2021 and 2020. Included in “Operating costs and expenses” in the consolidated statements of operations were reductions of previously recorded credit losses of $4.4 million for the year ended December 31, 2019.

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- Definition The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -URI http://asc.fasb.org/topic&trid=49130388 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130551-203045 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130556-203045 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 12 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130554-203045 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130550-203045 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 12 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130554-203045 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 12 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130554-203045 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 12 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130554-203045 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130558-203045 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130554-203045 + Details
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