Basis of Presentation	3 Months Ended
Mar. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	BASIS OF PRESENTATION Basis of Presentation and Principles of Consolidation The unaudited condensed consolidated financial statements of Centrus Energy Corp. (“Centrus” or the “Company”), which include the accounts of the Company, its principal subsidiary, United States Enrichment Corporation, and its other subsidiaries, as of March 31, 2019, and for the three months ended March 31, 2019 and 2018, have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). The condensed consolidated balance sheet as of December 31, 2018, was derived from audited consolidated financial statements, but does not include all disclosures required by generally accepted accounting principles in the United States (“GAAP”). In the opinion of management, the unaudited condensed consolidated financial statements reflect all adjustments, including normal recurring adjustments, necessary for a fair statement of the financial results for the interim period. Certain information and notes normally included in financial statements prepared in accordance with GAAP have been omitted pursuant to such rules and regulations. All material intercompany transactions have been eliminated. The Company’s components of comprehensive income for the three months ended March 31, 2019 and 2018 are insignificant. Operating results for the three months ended March 31, 2019, are not necessarily indicative of the results that may be expected for the year ending December 31, 2019. The unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes and Management's Discussion and Analysis of Financial Condition and Results of Operations included in the Annual Report on Form 10-K for the year ended December 31, 2018. New Accounting Standards Recently Adopted Accounting Standards In February 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016-02, Leases (Topic 842) (“Topic 842”), which requires lessees to recognize a right-of-use asset and lease liability on the balance sheet for all leases with a term longer than 12 months. The Company adopted this standard on January 1, 2019, using the modified transition method which provides for recognition of existing leases as of the adoption date without requiring comparable presentation for the prior period. Lease assets and liabilities are recognized based on the present value of lease payments over the lease term. The Company’s leases do not provide an implicit interest rate. The Company uses an estimated incremental borrowing rate based on the term of the lease using information available at the adoption date or the lease commencement, if later, including the yield on the Company’s collateralized debt. The Company has elected to adopt the package of practical expedients provided under Topic 842 which allowed the Company to not apply a reassessment of whether any existing or expired contracts contain leases, reassessment of lease classification for existing or expired leases and reassessment of initial direct costs for leases. The adoption of this standard had no impact on the Company’s consolidated statement of operations or statement of cash flows. Refer to Note 8, Leases, for additional information. In February 2018, the FASB issued ASU 2018-02, Income Statement-Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. The amendments in ASU 2018-02 allow a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the Tax Cut and Jobs Act of 2017 (the “Tax Act”). However, because the amendments only relate to the reclassification of the income tax effects of the Tax Act, the underlying guidance that requires that the effect of a change in tax laws or rates be included in income from continuing operations is not affected. The Company adopted the new standard effective January 1, 2019, and elected not to reclassify the stranded tax effect resulting from the 2017 Tax Act to retained earnings. Accounting Standards Effective in Future Periods In August 2018, the FASB issued ASU 2018-14, Compensation - Retirement Benefits - Defined Benefit Plans - General (Subtopic 715-20), which modifies the disclosure requirements for employers that sponsor defined benefit pension plans and other postretirement plans. ASU 2018-14 is effective for public companies for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2020. The standard is to be applied on a retrospective basis to all periods presented and early adoption is permitted. The Company is evaluating the effect that the provisions of ASU 2018-14 will have on its consolidated financial statements. Significant Accounting Policies The accounting policies of the Company are set forth in Note 1 to the Consolidated Financial Statements contained in the Company’s Annual Report on Form 10-K for the year ended December 31, 2018. Updates to those policies as a result of the adoption of ASC 842 have been included in Note 8, Leases.

BASIS OF PRESENTATION

Basis of Presentation and Principles of Consolidation

The unaudited condensed consolidated financial statements of Centrus Energy Corp. (“Centrus” or the “Company”), which include the accounts of the Company, its principal subsidiary, United States Enrichment Corporation, and its other subsidiaries, as of March 31, 2019, and for the three months ended March 31, 2019 and 2018, have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). The condensed consolidated balance sheet as of December 31, 2018, was derived from audited consolidated financial statements, but does not include all disclosures required by generally accepted accounting principles in the United States (“GAAP”). In the opinion of management, the unaudited condensed consolidated financial statements reflect all adjustments, including normal recurring adjustments, necessary for a fair statement of the financial results for the interim period. Certain information and notes normally included in financial statements prepared in accordance with GAAP have been omitted pursuant to such rules and regulations. All material intercompany transactions have been eliminated. The Company’s components of comprehensive income for the three months ended March 31, 2019 and 2018 are insignificant.

Operating results for the three months ended March 31, 2019, are not necessarily indicative of the results that may be expected for the year ending December 31, 2019. The unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes and Management's Discussion and Analysis of Financial Condition and Results of Operations included in the Annual Report on Form 10-K for the year ended December 31, 2018.

New Accounting Standards

Recently Adopted Accounting Standards

In February 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016-02, Leases (Topic 842) (“Topic 842”), which requires lessees to recognize a right-of-use asset and lease liability on the balance sheet for all leases with a term longer than 12 months. The Company adopted this standard on January 1, 2019, using the modified transition method which provides for recognition of existing leases as of the adoption date without requiring comparable presentation for the prior period. Lease assets and liabilities are recognized based on the present value of lease payments over the lease term. The Company’s leases do not provide an implicit interest rate. The Company uses an estimated incremental borrowing rate based on the term of the lease using information available at the adoption date or the lease commencement, if later, including the yield on the Company’s collateralized debt. The Company has elected to adopt the package of practical expedients provided under Topic 842 which allowed the Company to not apply a reassessment of whether any existing or expired contracts contain leases, reassessment of lease classification for existing or expired leases and reassessment of initial direct costs for leases. The adoption of this standard had no impact on the Company’s consolidated statement of operations or statement of cash flows. Refer to Note 8, Leases, for additional information.

In February 2018, the FASB issued ASU 2018-02, Income Statement-Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. The amendments in ASU 2018-02 allow a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the Tax Cut and Jobs Act of 2017 (the “Tax Act”). However, because the amendments only relate to the reclassification of the income tax effects of the Tax Act, the underlying guidance that requires that the effect of a change in tax laws or rates be included in income from continuing operations is not affected. The Company adopted the new standard effective January 1, 2019, and elected not to reclassify the stranded tax effect resulting from the 2017 Tax Act to retained earnings.

Accounting Standards Effective in Future Periods

In August 2018, the FASB issued ASU 2018-14, Compensation - Retirement Benefits - Defined Benefit Plans - General (Subtopic 715-20), which modifies the disclosure requirements for employers that sponsor defined benefit pension plans and other postretirement plans. ASU 2018-14 is effective for public companies for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2020. The standard is to be applied on a retrospective basis to all periods presented and early adoption is permitted. The Company is evaluating the effect that the provisions of ASU 2018-14 will have on its consolidated financial statements.

Significant Accounting Policies

The accounting policies of the Company are set forth in Note 1 to the Consolidated Financial Statements contained in the Company’s Annual Report on Form 10-K for the year ended December 31, 2018. Updates to those policies as a result of the adoption of ASC 842 have been included in Note 8, Leases.