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DERIVATIVE INSTRUMENTS | 3 Months Ended
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Mar. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES | NOTE 15 - DERIVATIVE INSTRUMENTS The following table presents the fair value of our derivative instruments and the classification of each in the Statements of Unaudited Condensed Consolidated Financial Position:
|  | (In Millions)
|  | Derivative Assets |  | Derivative Liabilities
|  | March 31, 2018 |  | December 31, 2017 |  | March 31, 2018 |  | December 31, 2017
Derivative Instrument |  | Balance Sheet Location |  | Fair Value |  | Balance Sheet Location |  | Fair Value |  | Balance Sheet Location |  | Fair Value |  | Balance Sheet Location |  | Fair Value
Derivatives designated as hedging instruments under ASC 815: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commodity Contracts |  |  |  | $ | — |  |  |  |  | $ | — |  |  | Other current liabilities |  | $ | 0.2 |  |  | Other current liabilities |  | $ | 0.3 |
Derivatives not designated as hedging instruments under ASC 815: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Customer supply agreements |  | Derivative assets |  | $ | 91.2 |  |  | Derivative assets |  | $ | 37.9 |  |  |  |  | $ | — |  |  |  |  | $ | — |
Provisional pricing arrangements |  | Derivative assets |  | 2.4 |  |  | Derivative assets |  | 1.5 |  |  | Other current liabilities |  | 4.2 |  |  | Other current liabilities |  | 2.4 |
Total derivatives not designated as hedging instruments under ASC 815 |  |  |  | $ | 93.6 |  |  |  |  | $ | 39.4 |  |  |  |  | $ | 4.2 |  |  |  |  | $ | 2.4 |
Total derivatives |  |  |  | $ | 93.6 |  |  |  |  | $ | 39.4 |  |  |  |  | $ | 4.4 |  |  |  |  | $ | 2.7 |
Cash Flow Hedges Commodity Contracts As of March 31, 2018, we had outstanding natural gas hedge contracts for a notional amount of 3.5 million MMBtu in the form of forward contracts with varying maturity dates ranging from April 2018 to February 2019. As of December 31, 2017, we had outstanding natural gas hedge contracts for a notional amount of 3.5 million MMBtu in the form of forward contracts with varying maturity dates ranging from January 2018 to November 2018. Changes in fair value of highly effective hedges are recorded as a component of Accumulated other comprehensive loss in the Statements of Unaudited Condensed Consolidated Financial Position. During the three months ended March 31, 2018, we recorded an unrealized gain of $0.4 million in Other comprehensive income (loss) for changes in the fair value of these instruments and $0.1 million has been reclassified from Accumulated other comprehensive loss into earnings. We had no commodity contracts designated as hedge instruments for the three months ended March 31, 2017. Derivatives Not Designated as Hedging Instruments Customer Supply Agreements Most of our U.S. Iron Ore long-term supply agreements are comprised of a base price with annual price adjustment factors. The base price is the primary component of the purchase price for each contract. The indexed price adjustment factors are integral to the iron ore supply contracts and vary based on the agreement, but typically include adjustments based upon changes in the Platts 62% Price, along with pellet premiums, published Platts international indexed freight rates and changes in specified Producer Price Indices, including those for industrial commodities, fuel and steel. The pricing adjustments generally operate in the same manner, with each factor typically comprising a portion of the price adjustment, although the weighting of each factor varies based upon the specific terms of each agreement. In most cases, these adjustment factors have not been finalized at the time our product is sold. In these cases, we historically have estimated the adjustment factors at each reporting period based upon the best third-party information available. The estimates are then adjusted to actual when the information has been finalized. The price adjustment factors have been evaluated to determine if they contain embedded derivatives. The price adjustment factors share the same economic characteristics and risks as the host contract and are integral to the host contract as inflation adjustments; accordingly, they have not been separately valued as derivative instruments. A supply agreement with one U.S. Iron Ore customer provides for supplemental revenue or refunds to the customer based on the average annual daily steel market price for hot-rolled coil steel at the time the iron ore product is consumed in the customer’s blast furnace. The supplemental pricing is characterized as a freestanding derivative and is required to be accounted for separately once the product is delivered. The derivative instrument, which is finalized based on a future price, is adjusted to fair value as a revenue adjustment each reporting period until the pellets are consumed and the amounts are settled. We recognized net derivative revenue of $41.9 million and $17.8 million in Product revenues in the Statements of Unaudited Condensed Consolidated Operations for the three months ended March 31, 2018 and 2017, respectively, related to the supplemental payments. Derivative assets, representing the fair value of the supplemental revenue, were $91.2 million and $37.9 million as of March 31, 2018 and December 31, 2017 in the Statements of Unaudited Condensed Consolidated Financial Position, respectively. Provisional Pricing Arrangements Certain of our U.S. Iron Ore and Asia Pacific Iron Ore customer supply agreements specify provisional price calculations, where the pricing mechanisms generally are based on market pricing, with the final revenue rate based on certain market inputs at a specified period in time in the future, per the terms of the supply agreements. Market inputs are tied to indexed price adjustment factors that are integral to the iron ore supply contracts and vary based on the agreement. The pricing mechanisms typically include adjustments based upon changes in the Platts 62% Price, along with pellet premiums, published Platts international indexed freight rates and changes in specified Producer Price Indices, including those for industrial commodities, fuel and steel. The pricing adjustments generally operate in the same manner, with each factor typically comprising a portion of the price adjustment, although the weighting of each factor varies based upon the specific terms of each agreement. Revenue is recognized generally when iron ore is delivered to our customers. Revenue is measured at the point control transfers and represents the amount of consideration we expect to receive in exchange for transferring goods. Changes in the expected revenue rate from the date control transfers through final settlement of contract terms is recorded in accordance with ASC Topic 815 and is characterized as a freestanding derivative and accounted for separately. Subsequently, the derivative instruments for both U.S. Iron Ore and Asia Pacific Iron Ore are adjusted to fair value through Product revenues each reporting period based upon current market data and forward-looking estimates provided by management until the final revenue rate is determined. At March 31, 2018, we recorded $2.4 million as Derivative assets and $4.2 million as derivative liabilities classified as Other current liabilities related to our estimate of the final revenue rate with our U.S. Iron Ore and Asia Pacific Iron Ore customers in the Statements of Unaudited Condensed Consolidated Financial Position. At December 31, 2017, we recorded $1.5 million as Derivative assets and $2.4 million as derivative liabilities classified as Other current liabilities related to our estimate of the final revenue rate with our U.S. Iron Ore and Asia Pacific Iron Ore customers in the Statements of Unaudited Condensed Consolidated Financial Position. These amounts represent the difference between the amount we expect to receive when revenue is initially measured at the point control transfers and our subsequent estimate of the final revenue rate based on the price calculations established in the supply agreements. We recognized net increases of $3.2 million and $15.7 million in Product revenues in the Statements of Unaudited Condensed Consolidated Operations for the three months ended March 31, 2018 and 2017, respectively, related to these arrangements. The following summarizes the effect of our derivatives that are not designated as hedging instruments in the Statements of Unaudited Condensed Consolidated Operations:
(In Millions)
Derivatives Not Designated as Hedging Instruments |  | Location of Income (Loss) Recognized on Derivatives |  | Amount of Income (Loss) Recognized on Derivatives
|  |  |  | Three Months Ended March 31,
|  |  |  | 2018 |  | 2017
Customer Supply Agreements |  | Product revenues |  | $ | 41.9 |  |  | $ | 17.8 |
Provisional Pricing Arrangements |  | Product revenues |  | 3.2 |  |  | 15.7 |
Commodity Contracts |  | Cost of goods sold and operating expenses |  | — |  |  | (1.3 | )
Total |  |  |  | $ | 45.1 |  |  | $ | 32.2 |
Refer to NOTE 8 - FAIR VALUE MEASUREMENTS for additional information.

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- Definition The entire disclosure for derivative instruments and hedging activities including, but not limited to, risk management strategies, non-hedging derivative instruments, assets, liabilities, revenue and expenses, and methodologies and assumptions used in determining the amounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -URI http://asc.fasb.org/topic&trid=2229140 + Details
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