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Revenue | 3 Months Ended
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Mar. 31, 2020
Revenue Recognition and Deferred Revenue [Abstract] |
Revenue | Revenue We disaggregate our revenue by geographical region as follows:
Net Sales |  | Three months ended March 31,
|  | 2020 |  | 2019
United States |  | $ | 274.1 |  |  | $ | 325.2 |
Iceland |  | 147.1 |  |  | 164.8 |
Total |  | $ | 421.2 |  |  | $ | 490.0 |
Trade accounts receivable - net as of March 31, 2020 decreased by $17.3 million from December 31, 2019 due to a decrease in sales resulting from lower realized LME prices and timing of receivable collections.

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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 + Details
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