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Fair Value Measurements | 3 Months Ended
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Mar. 31, 2014
Fair Value Disclosures [Abstract] |
Fair Value Measurements | FAIR VALUE MEASUREMENTS Pursuant to the accounting guidance for fair value measurements, fair value is defined as the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. When determining the fair value measurements for assets and liabilities required or permitted to be recorded at fair value, consideration is given to the principal or most advantageous market and assumptions that market participants would use when pricing the asset or liability. As a result of USEC Inc.'s bankruptcy filing on March 5, 2014, the realization of assets and the satisfaction of liabilities are subject to uncertainty. Further, USEC's reorganization could materially change the amounts and classifications of assets and liabilities reported in the consolidated condensed financial statements. Fair Value Hierarchy The accounting guidance for fair value measurement also requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The standard establishes a fair value hierarchy based on the level of independent, objective evidence surrounding the inputs used to measure fair value. A financial instrument’s categorization within the fair value hierarchy is based upon the lowest level of input that is significant to the fair value measurement. The fair value hierarchy is as follows:
• | Level 1 – quoted prices in active markets for identical assets or liabilities.
• | Level 2 – inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices in active markets for similar assets or liabilities, quoted prices for identical or similar assets or liabilities in markets that are not active, or model-derived valuations in which significant inputs are observable or can be derived principally from, or corroborated by, observable market data.
• | Level 3 – unobservable inputs in which little or no market data exists.
Financial Instruments Recorded at Fair Value
| Fair Value Measurements (in millions)
| March 31, 2014 |  | December 31, 2013
| Level 1 |  | Level 2 |  | Level 3 |  | Total |  | Level 1 |  | Level 2 |  | Level 3 |  | Total
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash equivalents (a) | — |  |  | $ | 80.1 |  |  | — |  |  | $ | 80.1 |  |  | — |  |  | $ | 312.7 |  |  | — |  |  | $ | 312.7 |
Deferred compensation asset (b) | — |  |  | 3.1 |  |  | — |  |  | 3.1 |  |  | — |  |  | 3.1 |  |  | — |  |  | 3.1 |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred compensation obligation (b) | — |  |  | 2.9 |  |  | — |  |  | 2.9 |  |  | — |  |  | 3.0 |  |  | — |  |  | 3.0 |
(a) | Cash equivalents consist of funds invested in institutional money market funds. These investments are classified within Level 2 of the valuation hierarchy because the publicly reported Net Asset Value (“NAV”) of one dollar does not necessarily reflect the fair value of the underlying securities.
(b) | The deferred compensation obligation represents the balance of deferred compensation plus net investment earnings. The deferred compensation plan is informally funded through a rabbi trust using variable universal life insurance. The cash surrender value of the life insurance policies is designed to track the deemed investments of the plan participants. Investment crediting options consist of institutional and retail investment funds. The deemed investments are classified within Level 2 of the valuation hierarchy because (i) of the indirect method of investing and (ii) unit prices of institutional funds are not quoted in active markets.
Other Financial Instruments As of March 31, 2014 and December 31, 2013, the balance sheet carrying amounts for accounts receivable, accounts payable and accrued liabilities (excluding the deferred compensation obligation described above) approximate fair value because of the short-term nature of the instruments. The balance sheet carrying amounts and estimated fair values of USEC’s convertible senior notes follow (in millions):
| March 31, 2014 |  | December 31, 2013
| Carrying Value |  | Fair Value |  | Carrying Value |  | Fair Value
Convertible senior notes, excluding accrued interest | $ | 530.0 |  |  | $ | 185.5 |  |  | $ | 530.0 |  |  | $ | 184.1 |
The estimated fair value of the convertible notes is based on the trading price as of the balance sheet date, and is classified as using Level 1 inputs in the fair value measurement. In connection with our voluntary petition for relief under Chapter 11 of the United States Bankruptcy Code, USEC Inc. has reached an agreement on the terms of a financial restructuring plan with the holders of approximately 65% of the principal amount of our convertible senior notes. Under the terms of the agreement, USEC will replace the approximately $530 million of convertible senior notes that are scheduled to mature in October 2014 with new debt and equity. As further detailed in Note 2, the $530 million in the outstanding principal amount of convertible senior notes would be exchanged for new common stock, cash for accrued and unpaid interest, and $200 million in principal amount of new notes issued by the reorganized USEC Inc. on terms described in the Plan’s implementing documents.

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- Definition The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13537-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13433-108611 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14064-108612 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14172-108612 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13504-108611 + Details
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