EnergySolutions 10-Q 12 Nov 13 2013 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Sep. 30, 2013	Nov. 12, 2013
Entity Information [Line Items]	'	'
Entity Registrant Name	'EnergySolutions, Inc.	'
Entity Central Index Key	'0001393744	'
Document Type	'10-Q	'
Document Period End Date	30-Sep-13	'
Amendment Flag	'false	'
Current Fiscal Year End Date	'--12-31	'
Entity Current Reporting Status	'Yes	'
Entity Filer Category	'Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	100
Document Fiscal Year Focus	'2013	'
Document Fiscal Period Focus	'Q3	'

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Sep. 30, 2013		Dec. 31, 2012
In Thousands, unless otherwise specified
Current assets:	'		'
Cash and cash equivalents	$54,158		$134,191
Accounts receivable, net of allowance for doubtful accounts	258,346		259,913
Costs and estimated earnings in excess of billings on uncompleted contracts	87,500		98,978
Income tax receivable	4,735		6,427
Prepaid expenses	7,307		11,022
Nuclear decommissioning trust fund investments, current portion	122,959		152,507
Deferred costs, current portion	105,031		127,573
Other current assets	5,151		3,924
Total current assets	645,187		794,535
Property, plant and equipment, net	114,410		117,744
Goodwill	308,451		308,608
Other intangible assets, net	219,934		239,551
Nuclear decommissioning trust fund investments	348,159		445,989
Restricted cash and decontamination and decommissioning deposits	294,043		316,754
Deferred costs	288,884		360,185
Other noncurrent assets	129,309		72,096
Total assets	2,348,377	[1]	2,655,462
Current liabilities:	'		'
Current portion of long-term debt	79,407		16,592
Accounts payable	117,840		144,649
Accrued expenses and other current liabilities	207,635		193,546
Deferred income taxes	1,063		1,101
Facility and equipment decontamination and decommissioning liabilities, current portion	113,159		138,757
Unearned revenue, current portion	127,512		150,135
Total current liabilities	646,616		644,780
Long-term debt, less current portion	666,035		798,577
Pension liability	55,088		31,043
Facility and equipment decontamination and decommissioning liabilities	401,976		485,447
Deferred income taxes	16,479		20,507
Unearned revenue, less current portion	291,912		366,710
Other noncurrent liabilities	31,158		7,479
Total liabilities	2,109,264		2,354,543
Commitments and contingencies	0		0
Stockholders’ equity:	'		'
Common stock, $0.01 par value, 100 and 1,000,000,000 shares authorized as of September 30, 2013 and December 31, 2012, respectively, and 100 and 90,253,242 shares issued and outstanding as of September 30, 2013 and December 31, 2012, respectively.	0		903
Additional paid-in capital	520,550		511,503
Accumulated other comprehensive loss	-21,620		-21,956
Accumulated deficit	-260,316		-190,031
Total EnergySolutions stockholders’ equity	238,614		300,419
Noncontrolling interests	499		500
Total equity	239,113		300,919
Total liabilities and stockholders’ equity	$2,348,377		$2,655,462
[1]	Corporate unallocated assets relate primarily to income tax receivables, deferred tax assets, deferred financing costs, prepaid expenses, and property, plant and equipment that benefit the entire Company and cash

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Common stock, par value (in dollars per share)	$0.01	$0.01
Common stock, shares authorized	100	1,000,000,000
Common stock, shares issued	100	90,253,242
Common stock, shares outstanding	100	90,253,242

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) (USD $)	3 Months Ended				9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Revenue	$392,474	[1],[2]	$444,157	[1],[2]	$1,329,720	[1],[2]	$1,327,470	[1],[2]
Cost of revenue	-355,989		-398,000		-1,199,418		-1,213,730
Gross profit	36,485		46,157		130,302		113,740
Selling, general and administrative expenses	-30,046		-31,779		-131,664		-99,661
Equity in income of unconsolidated joint ventures	3,800		4,286		4,378		7,422
Income from operations	10,239	[2],[3]	18,664	[2],[3]	3,016	[2],[3]	21,501	[2],[3]
Interest expense	-20,478		-17,636		-57,921		-52,822
Other income (expense), net	2,273		12,368		-9,226		46,093
Income (loss) before income taxes and noncontrolling interests	-7,966		13,396		-64,131		14,772
Income tax benefit (expense)	3,110		-3,347		-6,155		20
Net income (loss)	-4,856		10,049		-70,286		14,792
Less: Net loss attributable to noncontrolling interests	1		3		1		35
Net income (loss) attributable to EnergySolutions	-4,855		10,052		-70,285		14,827
Other comprehensive income (loss):	'		'		'		'
Net income (loss)	-4,856		10,049		-70,286		14,792
Foreign currency translation adjustments, net of taxes	9,302		5,443		349		6,821
Change in unrecognized actuarial gain (loss)	462		273		-13		242
Other comprehensive income (loss), net of taxes	4,908		15,765		-69,950		21,855
Less: net loss attributable to noncontrolling interests	1		3		1		35
Comprehensive income (loss) attributable to EnergySolutions	$4,909		$15,768		($69,949)		$21,890
[1]	We eliminate intersegment revenue in consolidation. Intersegment revenue for the three month periods ended September 30, 2013, and 2012 was $4.2 million and $5.1 million, respectively. Intersegment revenue for the nine month periods ended September 30, 2013, and 2012 was $15.3 million and $18.4 million, respectively. Revenue by segment represent revenue earned based on third-party billings to customers.
[2]	Results of our operations for services provided to our customers in Canada, Asia and Europe are included in our International division.
[3]	For the three month period ended September 30, 2013, we recorded a $3.8 million of income from our unconsolidated joint ventures of which $0.4 million loss is attributable to our LP&D operations and $4.2 million of income is attributable to the Government Group. For the three month period ended September 30, 2012, we recorded $4.3 million of income from our unconsolidated joint ventures of which $0.1 million loss is attributable to LP&D operations and $4.4 million of income is attributable to the Government Group. For the nine month period ended September 30, 2013, we recorded a $4.4 million of income from our unconsolidated joint ventures of which $1.3 million loss is attributable to our LP&D operations and $5.7 million of income is attributable to the Government Group. For the nine month period ended September 30, 2012, we recorded $7.4 million of income from our unconsolidated joint ventures of which $0.1 million loss is attributable to LP&D operations and $7.5 million of income is attributable to the Government Group.

Condensed_Consolidated_Stateme1

Condensed Consolidated Statement of Changes in Stockholders' Equity (USD $)

Total

Common Stock

Additional Paid-in Capital

Accumulated Other Comprehensive Loss

Accumulated Deficit

Noncontrolling Interests

Energy Solutions Inc.

Energy Solutions Inc.

Energy Solutions Inc.

Parent

Parent

Parent

In Thousands, except Share data, unless otherwise specified

Common Stock

Additional Paid-in Capital

Common Stock

Additional Paid-in Capital

Balance at Dec. 31, 2012

$300,919

$903

$511,503

($21,956)

($190,031)

$500

'

'

'

'

'

'

Balance (in shares) at Dec. 31, 2012

90,253,242

90,253,242

'

'

'

'

'

'

'

'

'

'

Increase (Decrease) in Stockholders' Equity

'

'

'

'

'

'

'

'

'

'

'

'

Net loss

-70,286

'

'

'

-70,285

-1

'

'

'

'

'

'

Equity-based compensation

5,066

'

5,066

'

'

'

'

'

'

'

'

'

Vesting of restricted stock

0

22

-22

'

'

'

'

'

'

'

'

'

Vesting of restricted stock (in shares)

'

2,206,430

'

'

'

'

'

'

'

'

'

'

Minimum tax withholdings on restricted stock awards

-432

-1

-431

'

'

'

'

'

'

'

'

'

Minimum tax withholdings on restricted stock awards (in shares)

'

-111,107

'

'

'

'

'

'

'

'

'

'

Capital contribution from Parent

10,852

'

10,852

'

'

'

'

'

'

'

'

'

Common stock repurchased and retired

'

'

'

'

'

'

-7,342

-18

-7,324

-376,514

-906

-375,608

Common stock repurchased and retired (in shares)

'

'

'

'

'

'

'

-1,779,520

'

'

-90,569,045

'

Issuance of common stock

'

100

'

'

'

'

'

'

'

'

'

'

Issuance of common stock (in shares)

376,514

'

376,514

'

'

'

'

'

'

'

'

'

Change in unrecognized actuarial loss

-13

'

'

-13

'

'

'

'

'

'

'

'

Foreign currency translation, net of taxes

349

'

'

349

'

'

'

'

'

'

'

'

Balance at Sep. 30, 2013

$239,113

$0

$520,550

($21,620)

($260,316)

$499

'

'

'

'

'

'

Balance (in shares) at Sep. 30, 2013

100

100

'

'

'

'

'

'

'

'

'

'

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Cash Flows (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013		Sep. 30, 2012
Cash flows from operating activities	'		'
Net income (loss)	($70,286)		$14,792
Adjustments to reconcile net income (loss) to net cash used in operating activities:	'		'
Depreciation, amortization and accretion	52,454	[1]	56,601	[1]
Equity-based compensation expense	5,066		3,440
Deferred income taxes	-4,065		-11,113
Amortization of debt financing fees and debt discount	6,839		3,693
Loss on disposal of property, plant and equipment	256		2,137
Realized and unrealized gains on nuclear decommissioning trust fund investments	-843		-54,964
Changes in operating assets and liabilities:	'		'
Accounts receivable	1,910		31,111
Costs and estimated earnings in excess of billings on uncompleted contracts	11,591		21,796
Prepaid expenses and other current assets	3,536		-2,888
Accounts payable	-18,496		-36,166
Accrued expenses and other current liabilities	13,179		-45,998
Unearned revenue	-97,432		-63,949
Facility and equipment decontamination and decommissioning liabilities	-129,060		-109,973
Restricted cash and decontamination and decommissioning deposits	1,711		1,471
Nuclear decommissioning trust fund	124,730		127,222
Deferred costs	93,843		85,544
Other noncurrent assets	-52,254		-41,236
Other noncurrent liabilities	46,403		34,246
Net cash (used in) provided by operating activities	-10,918		15,766
Cash flows from investing activities	'		'
Purchase of nuclear decommissioning trust fund investments	-673,864		-651,933
Proceeds from sales of nuclear decommissioning trust fund investments	677,488		654,798
Purchases of property, plant and equipment	-10,159		-14,588
Purchases of intangible assets	0		-763
Proceeds from disposition of property, plant and equipment	0		5,317
Net cash used in investing activities	-6,535		-7,169
Cash flows from financing activities	'		'
Repayments of long-term debt	-72,593		0
Restricted cash held as collateral of letter of credit obligations	21,000		0
Distributions to noncontrolling interests partners	0		-158
Minimum tax withholding on restricted stock awards	-432		-120
Proceeds from issuance of common stock	0		1,497
Repurchase of common stock	-7,342		0
Repayments of capital lease obligations	-573		-629
Debt financing fees	-3,160		0
Net cash used in financing activities	-63,100		590
Effect of exchange rate on cash	520		1,513
Net increase (decrease) in cash and cash equivalents	-80,033		10,700
Cash and cash equivalents, beginning of period	134,191		77,213
Cash and cash equivalents, end of period	$54,158		$87,913
[1]	Depreciation, amortization and accretion expenses ("DA&A") are included in cost of revenue and SG&A expenses in the accompanying condensed consolidated statements of operations and comprehensive income (loss). DA&A expenses included in cost of revenue for the three month periods ended September 30, 2013, and 2012 were $12.2 million and $13.2 million, respectively. DA&A expenses included in cost of revenue for the nine month periods ended September 30, 2013, and 2012 were $36.6 million and $39.9 million, respectively. DA&A expenses included in SG&A for the three month periods ended September 30, 2013, and 2012 were $5.3 million and $5.6 million, respectively. DA&A expenses included in SG&A for the nine month periods ended September 30, 2013, and 2012 were $15.8 million and $16.7 million, respectively.

Description_of_Business

Description of Business	9 Months Ended
	Sep. 30, 2013
Description of Business	'
Description of Business	'
	Description of Business
	References herein to "EnergySolutions," the "Company," "we," "us" or "our" refer to EnergySolutions, Inc. and its consolidated subsidiaries unless the context otherwise requires.
	EnergySolutions, Inc., a Delaware corporation, provides a broad range of services both nationally and internationally, including (i) on-site decontamination and decommissioning ("D&D") services to commercial customers such as power and utility companies, pharmaceutical companies, research laboratories, universities, industrial facilities, state agencies and other commercial entities that are involved with nuclear materials; (ii) management and operation or clean-up of facilities with radioactive materials to government customers such as departments and administrations within the United States (the "U.S.") Department of Energy ("DOE") and U.S. Department of Defense ("DOD"); (iii) logistics, transportation, processing and disposal of radioactive waste at our one facility in Clive, Utah, our four facilities in Tennessee, or our two facilities in Barnwell, South Carolina; and (iv) comprehensive long-term stewardship D&D work for shut-down nuclear power plants and similar operations. We also provide turn-key services such as water treatment and sell other products and technologies to utilities in the U.S. and abroad. Our international operations derive revenue primarily through contracts with the Nuclear Decommissioning Authority ("NDA") in the United Kingdom ("U.K.") to operate, manage and decommission ten Magnox sites with twenty-two nuclear reactors.
	We report our results through two major operating groups: the Government Group and the Global Commercial Group. The Global Commercial Group reports its results under three separate operating business divisions: Commercial Services ("CS"), Logistics, Processing and Disposal ("LP&D") and International.

Business_Combinations

Business Combinations	9 Months Ended
	Sep. 30, 2013
Business Combinations [Abstract]	'
Business Combinations	'
	Business Combinations
	On January 7, 2013, the Company entered into an Agreement and Plan of Merger (the "Merger Agreement") with Rockwell Holdco, Inc., a Delaware corporation (the "Parent" or "Rockwell") and Rockwell Acquisition Corp., a Delaware corporation and wholly owned subsidiary of Parent ("Merger Sub") established as an acquisition vehicle for the purpose of acquiring the Company. The Merger Agreement was later amended on April 5, 2013. Pursuant to the terms of the Merger Agreement, as amended, on May 24, 2013, (the "Merger Date"), Merger Sub merged with and into the Company, with the Company surviving as a wholly-owned subsidiary of Parent (the "Merger"). Parent is 100% owned by Energy Capital Partners II, LP and its parallel funds ("Energy Capital" or "ECP") a leading private equity firm focused on investing in North America’s energy infrastructure.
	On the Merger Date, each issued and outstanding share of common stock of the Company (other than shares of Company common stock held in the treasury of the Company or owned by Parent, affiliates of Parent, Merger Sub, a subsidiary of the Company or by stockholders who had validly exercised and perfected their appraisal rights under Delaware law), was converted into the right to receive $4.15 in cash, without interest and subject to any required withholding of taxes. The Company's common stock ceased to be traded on the New York Stock Exchange after close of market on May 24, 2013. The Company continues its operations as a privately-held company. The Company filed with the Securities and Exchange Commission (the "SEC"), or has had filed on its behalf, a Form 15 and Form 25 to deregister the Company's common stock under Sections 12(b) and (g) of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), respectively, which deregistration became effective 90 days after the filing of the applicable form. Further, the Company's reporting obligations under Section 15(d) of the Exchange Act on account of its common stock will be suspended effective January 1, 2014, at which time the Company will no longer file periodic reports with the SEC on account of its common stock, but will continue to have public reporting obligations with the SEC with respect to its 10.75% Senior Notes due 2018, as required by the indenture governing such Senior Notes.
	Prior to the Merger, under our certificate of incorporation there were 1,000,000,000 shares of common stock authorized and 100,000,000 shares of preferred stock authorized. In connection with the completion of the Merger,
	all shares of common stock outstanding at the time of the Merger were canceled and our certificate of incorporation was amended and restated to authorize only 100 shares of common stock, all of which are currently outstanding and owned by Parent. There are no shares of preferred stock authorized under our new amended and restated certificate of incorporation.
	We refer to the May 24, 2013 acquisition of EnergySolutions by Rockwell as the "Merger Transaction". The following events describe the transactions that occurred in connection with the Merger Transaction:
	•	Parent and EnergySolutions purchased and retired all of the Company's outstanding common stock as of the Merger Date and paid approximately $383.9 million in cash to the Company's stockholders. Of the total amount paid, EnergySolutions directly purchased 1.8 million shares for $7.3 million from cash on hand. The 1.8 million shares were issued as a result of accelerated vesting of previously issued restricted stock awards due to change in control.
	•	Parent paid $10.9 million of Merger Transaction related costs on behalf of EnergySolutions. Payments made by Parent on the Company's behalf were accounted for as capital contributions. Of the $10.9 million transaction costs, approximately $3.1 million was capitalized as debt issuance costs and the remainder was expensed on the Merger Date and is included in the condensed consolidated statements of operations and comprehensive income (loss) under selling, general and administrative ("SG&A") expenses.
	•	EnergySolutions incurred $32.6 million of Merger Transaction related expenses. These expenses were comprised primarily of employee incentive compensation and related payroll taxes of $21.0 million and professional fees of $11.6 million. These expenses were included in the condensed consolidated statements of operations and comprehensive income (loss) under cost of revenue and SG&A expenses.
	The Merger Transaction was accounted for as a recapitalization, and accordingly, the Company will continue to apply its historical basis of accounting in its stand-alone financial statements after the Merger. This is based on our determination under Financial Accounting Standards Board ("FASB") accounting standards codification Topic 805 - Business Combinations, and SEC Staff Accounting Bulletin (SAB) No. 54, codified as Topic 5J, Push Down Basis of Accounting Required In Certain Limited Circumstances, that while the push down of Parent's basis in EnergySolutions is permissible, it was not required due to the existence of significant outstanding public debt securities at EnergySolutions.

Basis_of_Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2013
Basis of Presentation	'
Basis of Presentation	'
	Basis of Presentation
	The accompanying unaudited condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the SEC regarding interim financial reporting. Accordingly, they do not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements and should be read in conjunction with the audited consolidated financial statements and notes thereto contained in our Annual Report on Form 10-K for the year ended December 31, 2012 (the "2012 Annual Report").
	In the opinion of management, all material adjustments which are of a normal and recurring nature necessary for a fair presentation of the results for the periods presented have been reflected. Preparing financial statements requires management to make estimates and assumptions that affect the amounts that are reported in the consolidated financial statements and accompanying disclosures. Although these estimates are based on our best knowledge of current events and actions that we may undertake in the future, actual results may be different from these estimates. The results of operations for the three and nine months ended September 30, 2013 are not necessarily indicative of the results to be expected for any future period or the full fiscal year.
	We have majority voting rights for one of our minority-owned joint ventures. Accordingly, we have consolidated its operations in our consolidated financial statements and therefore, we recorded the noncontrolling interests, which reflect the portion of the earnings of operations which are applicable to other noncontrolling partners. Assets from our consolidated joint venture can only be used to settle its own obligations. Additionally, our assets cannot be used to settle the joint ventures’ obligations because this minority owned joint venture does not have recourse to our general credit.

Recent_Accounting_Pronouncemen

Recent Accounting Pronouncements	9 Months Ended
	Sep. 30, 2013
Accounting Changes and Error Corrections [Abstract]	'
Recent Accounting Pronouncements	'
	Recent Accounting Pronouncements
	Accounting Pronouncements Issued
	New accounting pronouncements implemented by the company during the nine months ended September 30, 2013 or requiring implementation in future periods are discussed below or elsewhere in the notes, where appropriate.
	In July 2013, the FASB issued guidance related to presentation of an unrecognized tax benefit when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists. The guidance eliminates diversity in practice for presentation of an unrecognized tax benefit when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward is available to reduce the taxable income or tax payable that would result from disallowance of a tax position. This guidance is effective for interim and annual reporting periods beginning after December 15, 2013 and should be applied prospectively to all unrecognized tax benefits that exist at the effective date. The Company intends to adopt this guidance at the beginning of its first quarter of fiscal year 2014, and is currently evaluating the impact on its financial statements and disclosures.
	In March 2013, the FASB issued guidance related to foreign currency matters. The standard update addresses the accounting for the release of cumulative translation adjustment when a parent either sells a part or all of its investment in a foreign entity or no longer holds a controlling financial interest in a business unit or a group of assets that do not produce a profit within a foreign entity. Under such circumstances, a parent company is required to release any related currency adjustments to earnings. The currency adjustment is released into earnings only if the sale or transfer results in a complete or substantially complete liquidation of the foreign entity in question. The standard update is effective for interim and annual reporting periods beginning after December 15, 2013. We do not expect that the adoption of this guidance will have a material impact on the Company’s financial position, results of operations or cash flows.
	In February 2013, the FASB issued an update to improve the transparency of reporting reclassifications out of accumulated other comprehensive income. The amendments in the update did not change the current requirements for reporting net income or other comprehensive income in financial statements. The new amendments require an organization to present (either on the face of the statement where net income is presented or in the notes) the effects on the line items of net income of significant amounts reclassified out of accumulated other comprehensive income if the item reclassified is required under U.S. GAAP to be reclassified to net income in its entirety in the same reporting period. Additionally, for other amounts that are not required under U.S. GAAP to be reclassified in their entirety to net income in the same reporting period, an entity is required to cross-reference other disclosures required under U.S. GAAP to provide additional detail about those amounts. The amendments are effective for reporting periods beginning after December 15, 2012. The adoption of this did not have a material impact on the Company’s financial position, results of operations or cash flows.

Trust_Fund_Investments

Trust Fund Investments	9 Months Ended
	Sep. 30, 2013
Investments, Debt and Equity Securities [Abstract]	'
Trust Fund Investments	'
	Trust Fund Investments
	The Nuclear Decommissioning Trust ("NDT") fund was established solely to satisfy obligations related to the D&D of the Zion Station. The NDT fund holds investments in marketable debt and equity securities directly and indirectly through commingled funds. Investments in the NDT fund are carried at fair value and are classified as trading securities. We consolidate the NDT fund as a variable interest entity ("VIE"). We have a contractual interest in the NDT fund and this interest is a variable interest due to its exposure to the fluctuations caused by market risk. We are able to control the NDT fund by appointing the trustee and, subject to certain restrictions, we are able to direct the investment policies of the fund. We are the primary beneficiary of the NDT fund as we benefit from positive market returns and bear the risk of market losses.
	NDT fund investments consisted of the following (in thousands):
		As of September 30, 2013											As of December 31, 2012
		Amortized			Gross		Gross			Estimated			Amortized		Gross		Gross			Estimated
		cost			unrealized		unrealized			fair value			cost		unrealized		unrealized			fair value
					gains		losses								gains		losses
	Assets
	Receivables for securities sold	$	16,995		$	—	$	—		$	16,995		$	7,422	$	—	$	—		$	7,422
	Investments
	Corporate debt securities	213,120			8,246		(3,379		)	217,987			223,662		17,940		(575		)	241,027
	Equity securities	400			4		—			404			10,117		4,249		(61		)	14,305
	Direct lending securities	109,813			9,923		(4,149		)	115,587			98,138		6,026		(1,721		)	102,443
	Debt securities issued by states of the U.S.	23,730			869		(414		)	24,185			31,306		3,806		—			35,112
	Cash and cash equivalents	21,931			—		—			21,931			23,686		—		—			23,686
	Commingled funds	—			—		—			—			4,017		527		—			4,544
	Debt securities issued by the U.S. Treasury and other U.S. government corporations and agencies	78,845			109		(4,500		)	74,454			166,925		3,912		(880		)	169,957
	Total investments	447,839			19,151		(12,442		)	454,548			557,851		36,460		(3,237		)	591,074
	Total assets	464,834			19,151		(12,442		)	471,543			565,273		36,460		(3,237		)	598,496
	Liabilities
	Payable for securities purchased	(425		)	—		—			(425		)	—		—		—			—
	Total liabilities	(425		)	—		—			(425		)	—		—		—			—
	Net assets held by the NDT fund	$	464,409		$	19,151	$	(12,442	)	471,118			$	565,273	$	36,460	$	(3,237	)	598,496
	Less: current portion									(122,959		)								(152,507		)
	Long-term investments									$	348,159									$	445,989
	Investments held by the NDT fund, net, totaled $471.1 million and $598.5 million as of September 30, 2013 and December 31, 2012, respectively, and are included in current and other long-term assets in the accompanying condensed consolidated balance sheets, depending on the expected timing of usage of funds. We have withdrawn from the NDT fund approximately 124.7 million and 127.2 million for nine month periods ended September 30, 2013 and 2012, respectively, to pay for Zion Station D&D project expenses and estimated trust income taxes. During the nine month periods ended September 30, 2013 and 2012, we also paid approximately $3.6 million and $2.9 million, respectively, in fees associated with the management of the NDT fund investments. These fees are included in other income (expense), net, in the condensed consolidated statements of operations and comprehensive income (loss).
	For the three month periods ended September 30, 2013 and 2012, we recorded $0.6 million of unrealized losses and $12.1 million of unrealized gains, respectively, resulting from adjustments to the fair value of the NDT fund investments. For the nine month periods ended September 30, 2013 and 2012, we recorded $26.5 million of unrealized losses and $19.0 million of unrealized gains, respectively, resulting from adjustments to the fair value of the NDT investments.
	Net realized gains related to sales of investments, dividends and interest payments received from investments held by the NDT fund were $4.4 million and $8.2 million for the three month periods ended September 30, 2013 and 2012, respectively, and $27.4 million and $36.0 million, for the nine months ended September 30, 2013 and 2012, respectively. Both, unrealized and realized gains and losses on the NDT fund investments are included in other income (expense), net, in the condensed consolidated statements of operations and comprehensive income (loss).

Fair_Value_Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2012
Fair Value Disclosures [Abstract]	'
Fair Value Measurements	'
	Fair Value Measurements
	We have implemented the accounting requirements for financial assets, financial liabilities, non-financial assets and non-financial liabilities reported or disclosed at fair value. The requirements define fair value, establish a three level hierarchy for measuring fair value in GAAP, and expand disclosures about fair value measurements. Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities that a company has the ability to access at the measurement date. Level 2 inputs are inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly. Level 3 inputs are unobservable inputs for the assets or liabilities.
	This hierarchy requires us to use observable market data, when available, and to minimize the use of unobservable inputs when determining fair value. The methods described above may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values. Furthermore, while we believe our valuation methods are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different fair value measurement at the reporting date. Assets are classified in their entirety based on the lowest level of input that is significant to their fair value measurement.
	The carrying value of accounts receivable, costs, and estimated earnings in excess of billings on uncompleted contracts, prepaid assets, accounts payable, and accrued expenses approximate their fair value principally because of the short-term nature of these assets and liabilities.
	The fair market value of our term loan is estimated utilizing market quotations for debt that have quoted prices in active markets. Since our term loan does not trade on a daily basis in an active market, the fair value estimates are based on market observable inputs based on borrowing rates currently available for debt with similar terms and average maturities and is categorized as Level 2. The fair value of our term loan is calculated by taking the mid-point of the trading prices and multiplying it by the outstanding principal balance of our term loan. The fair market value of our term loan was approximately $460.7 million as of September 30, 2013 and $508.6 million as of December 31, 2012. The carrying value of our term loan was $454.4 million as of September 30, 2013 and $527.0 million as of December 31, 2012.
	In the case of our senior notes, we estimate fair value based on quoted market prices from active markets as they are publicly traded and are categorized as Level 1. As of September 30, 2013 and December 31, 2012, we had outstanding senior notes obligations with a carrying amount of $300.0 million and 300.0 million, respectively, with a fair market value of approximately $318.8 million as of September 30, 2013 and $283.5 million as of December 31, 2012.
	The following table presents the NDT fund investments measured at fair value (in thousands):
		As of September 30, 2013										As of December 31, 2012
		Total			Quoted Prices			Significant		Significant		Total		Quoted Prices		Significant		Significant
		Investments			in Active			Other		Unobservable		Investments		in Active		Other		Unobservable
		at Fair			Markets for			Observable		Inputs		at Fair		Markets for		Observable		Inputs
		Value			Identical			Inputs		Level 3		Value		Identical		Inputs		Level 3
					Assets			Level 2						Assets		Level 2		(revised)
					Level 1									Level 1
	Assets
	Receivables for securities sold	$	16,995		$	16,995		$	—	$	—	$	7,422	$	7,422	$	—	$	—
	Investments
	Cash and cash equivalents	21,931			21,931			—		—		23,686		23,686		—		—
	Fixed income securities(1)	316,626			74,453			242,173		—		446,096		125,605		320,491		—
	Equity securities(2)	404			404			—		—		14,305		14,305		—		—
	Direct lending securities(3)	115,587			—			—		115,587		102,443		—		—		102,443
	Units of participation(4)	—			—			—		—		4,544		—		4,544		—
	Total investments	454,548			96,788			242,173		115,587		591,074		163,596		325,035		102,443
	Total assets	471,543			113,783			242,173		115,587		598,496		171,018		325,035		102,443
	Liabilities
	Payable for securities purchased	(425		)	(425		)	—		—		—		—		—		—
	Total liabilities	(425		)	(425		)	—		—		—		—		—		—
	Net assets held by the NDT fund	$	471,118		$	113,358		$	242,173	$	115,587	$	598,496	$	171,018	$	325,035	$	102,443
	_____________________________
	-1	For fixed income securities, multiple prices from pricing services are obtained from pricing vendors whenever possible, which enables cross- provider validations in addition to checks for unusual daily movements. A primary price source is identified based on asset type, class or issue for each security. The trustee monitors prices supplied by pricing services and may use a supplemental price source or change the primary price source of a given security if the portfolio managers challenge an assigned price and the trustee determines that another price source is considered to be preferable. U.S. Treasury securities are categorized as Level 1 because they trade in a highly liquid and transparent market. Investments with maturities of three months or less when purchased, including certain short-term fixed income securities, are considered cash equivalents and are also categorized as Level 1. The fair values of fixed income securities, excluding U.S. Treasury securities, are based on evaluated prices that reflect observable market information, such as actual trade information or similar securities, adjusted for observable differences and are categorized in Level 2.
	-2	With respect to individually held equity securities, the trustee obtains prices from pricing services, whose prices are obtained from direct feeds from market exchanges. The fair values of equity securities held directly by the trust fund are based on quoted prices in active markets and are categorized in Level 1. Equity securities held individually are primarily traded on the New York Stock Exchange and NASDAQ Global Select Market, which contain only actively traded securities due to the volume trading requirements imposed by these national securities exchanges.
	-3	Direct lending securities are investments in managed funds that invest in private companies for long-term capital appreciation. The fair value of these securities is determined using either an enterprise value model or a bond valuation model. The enterprise value model develops valuation estimates based on valuations of comparable public companies, recent sales of private and public companies, discounting the forecasted cash flows of the portfolio company, estimating the liquidation or collateral value of the portfolio company or its assets, considering offers from third parties to buy the portfolio company, its historical and projected financial results, as well as other factors that may impact value. Significant judgment is required in the applications of discounts or premiums applied to the prices of comparable companies for factors such as size, marketability and relative performance. Under the bond valuation model, expected future cash flows are discounted using a discount rate. The discount rate is composed of a market based rate for similar credits in the public market and an internal credit rate based on the underlying risk of the credit. Investments in direct lending funds are categorized as Level 3 because the fair value of these securities is based largely on inputs that are unobservable and also utilize complex valuation models. Investments in direct lending securities typically cannot be redeemed until maturity of the term loan.
	Management determines the value of Level 3 investments by considering third party valuations and have concluded that quantitative information about significant unobservable inputs used in valuing these investments is not reasonably available. This includes information regarding the sensitivity of the fair values to changes in the unobservable inputs. We obtain annual valuations from the fund managers and gain an understanding of the inputs and assumptions used in preparing the valuations. We also conclude on the reasonableness of the fair value of these investments. We obtain quarterly reports from the fund managers and review for consistency and reasonableness with regards to the valuations of these investments that were analyzed at the most recent year-end.
	-4	Units of participation, which are similar to mutual funds, are maintained by investment companies and hold certain investments in accordance with stated fund objectives. The fair values of short-term commingled funds held within the trust funds, which generally hold short-term fixed income securities and are not subject to restrictions regarding the purchase or sale of shares, are derived from observable prices. Units of participation are categorized as Level 2 because the fair value of these securities is based primarily on observable prices of the underlying securities.
	The following table presents the rollforward for Level 3 assets and liabilities measured at fair value on a recurring basis (in thousands):
	Direct Lending Securities	September 30,			December 31,
		2013			2012
	Beginning balance	$	102,443		$	61,998
	Purchases and issuances	48,268			82,285
	Sales, dispositions and settlements	(38,258		)	(39,706		)
	Realized gains and losses	2			(2,940		)
	Change in unrealized gains and losses	3,132			806
	Ending balance	$	115,587		$	102,443

Joint_Ventures

Joint Ventures	9 Months Ended
	Sep. 30, 2012
Equity Method Investments and Joint Ventures [Abstract]	'
Joint Ventures	'
	Joint Ventures
	We use the equity method of accounting for our unconsolidated joint ventures. Under the equity method, we recognize our proportionate share of the net earnings of these joint ventures as a single line item under "Equity in income of unconsolidated joint ventures" in our condensed consolidated statements of operations and comprehensive income (loss). In accordance with authoritative guidance, we analyzed all of our joint ventures and classified them into two groups: (a) joint ventures that must be consolidated because we hold the majority voting interest, or because they are VIEs of which we are the primary beneficiary; and (b) joint ventures that do not need to be consolidated because we hold only a minority voting or other ownership interest, or because they are VIEs of which we are not the primary beneficiary. For the nine month period ended September 30, 2013, we performed an assessment of our joint ventures and concluded that no unconsolidated joint ventures should be consolidated and that no consolidated joint ventures should be deconsolidated.
	The table below presents unaudited financial information, for our unconsolidated joint ventures (in thousands):
		As of		As of
		September 30,		December 31,
		2013		2012
	Current assets	$	56,604	$	49,979
	Current liabilities	29,471		25,127
		For The Three Month				For The Nine Month
		Period Ended				Period Ended
		September 30,				September 30,
		2013		2012		2013		2012
	Revenue	$	46,239	$	54,798	$	104,986	$	125,751
	Gross profit	10,102		11,590		13,238		19,906
	Net income	9,914		11,439		12,602		19,543
	Net income (loss) attributable to EnergySolutions	3,800		4,286		4,378		7,422
	We received $1.1 million and $3.4 million in cash dividend distributions from our unconsolidated joint ventures for the nine month periods ended September 30, 2013 and 2012, respectively.

Goodwill

Goodwill	9 Months Ended
	Sep. 30, 2013
Goodwill and Intangible Assets Disclosure [Abstract]	'
Goodwill	'
	Goodwill
	As of September 30, 2013 and December 31, 2012, we had recorded $308.5 million and $308.6 million, respectively, of goodwill related to domestic and foreign acquisitions. Goodwill related to the acquisitions of foreign entities is translated into U.S. dollars at the exchange rate in effect at the balance sheet date. The related translation gains and losses are included as a separate component of other comprehensive income (loss) within the condensed consolidated statements of operations and comprehensive income (loss). For the nine and twelve month periods ended September 30, 2013 and December 31, 2012, we recorded $0.2 million of translation losses and $2.2 million of translation gains, respectively, related to goodwill denominated in foreign currencies.
	In accordance with authoritative guidance for accounting for Goodwill and Other Intangible Assets, we perform a qualitative assessment on our goodwill annually, as of April 1, or more often when events occur or circumstances change that would, more likely than not, reduce the fair value of a reporting unit below its carrying value. We consider such factors as: macroeconomic and market conditions, industry specific considerations, cost factors, overall financial performance, relevant entity-specific events (such as the Merger Transaction announced in January 2013 and closed in May 2013), share price considerations and other factors as deemed necessary. As of September 30, 2013, there were no events or circumstances that indicated that impairment existed in any of our reporting units.

Other_Intangible_Assets

Other Intangible Assets	9 Months Ended
	Sep. 30, 2013
Intangible Assets, Net (Excluding Goodwill) [Abstract]	'
Other Intangible Assets	'
	Other Intangible Assets
	Other intangible assets consisted of the following (in thousands):
		As of September 30, 2013						As of December 31, 2012
		Gross		Accumulated			Weighted	Gross		Accumulated			Weighted
		Carrying		Amortization			Average	Carrying		Amortization			Average
		Amount					Remaining	Amount					Remaining
							Useful Life						Useful Life
	Permits	$	243,116	$	(83,800	)	16.1 years	$	243,130	$	(76,406	)	16.9 years
	Customer relationships	159,988		(103,058		)	5.0 years	161,429		(93,552		)	5.6 years
	Technology and other	15,490		(11,802		)	2.3 years	15,490		(10,540		)	3.1 years
	Total amortizable intangibles	$	418,594	$	(198,660	)	12.9 years	$	420,049	$	(180,498	)	13.4 years
	All of our other intangible assets are subject to amortization. Amortization expense was $6.4 million and $6.5 million for the three month periods ended September 30, 2013 and 2012, respectively, and $19.3 million and $19.4 million for the nine month periods ended September 30, 2013 and 2012, respectively. Amortization expense is included in cost of revenue and SG&A expenses within the condensed consolidated statement of operations and comprehensive income (loss).
	We recorded $0.3 million of translation losses and $3.8 million of translation gains related to other intangible assets denominated in foreign currencies for the nine month periods ended September 30, 2013 and 2012, respectively. The related translation gains and losses are included as a separate component of other comprehensive income (loss) within the condensed consolidated statements of operations and comprehensive income (loss).

LongTerm_Debt

Long-Term Debt	9 Months Ended
	Sep. 30, 2013
Debt Disclosure [Abstract]	'
Long-Term Debt	'
	Our outstanding long-term debt consists of the following (in thousands):
		September 30,			December 31,
		2013			2012
	Term loan facilities due through 2016(1)	$	454,407		$	527,000
	Term loan unamortized discount	(6,187		)	(8,741		)
	Senior notes, 10.75% due through 2018	300,000			300,000
	Senior notes unamortized discount	(2,778		)	(3,090		)
	Revolving credit facility	—			—
	Total debt	745,442			815,169
	Less: current portion	(79,407		)	(16,592		)
	Total long-term debt	$	666,035		$	798,577
	______________________________
	-1	The variable interest rate on borrowings under our senior secured credit facility was 6.75% as of September 30, 2013 and 6.25% as of December 31, 2012.
	On August 13, 2010, the Company entered into a senior secured credit facility with JPMorgan Chase Bank, N.A., as the administrative agent and collateral agent, consisting of a senior secured term loan in an aggregate principal amount of $560.0 million at a discount rate of 2.5% and a senior secured revolving credit facility with availability of $105.0 million, of which $65.3 million was used to fund letters of credit issued as of September 30, 2013. Borrowings of $289.5 million and $310.6 million, respectively, were held in a restricted cash account as collateral for the Company’s reimbursement obligations with respect to deposit letters of credit for each of the periods ended September 30, 2013 and December 31, 2012.
	On February 15, 2013, we entered into Amendment No. 2 to the Credit Agreement and Consent and Waiver (the "Second Loan Amendment"). The Second Loan Amendment became effective on May 24, 2013 upon the consummation of the Merger. Pursuant to the Second Loan Amendment, the lenders and the administrative agent consented to i) a waiver of the change of control provisions and certain other covenants and provisions under the senior secured credit facility; ii) any repayment of our 10.75% Senior Notes due 2018, provided that any payments are funded from equity contributions made to us by ECP or its affiliates; iii) an extension to the maturity date of our senior secured revolving credit facility, subject to certain conditions and acceptance by the extending revolving lenders; and iv) 1% prepayment premium if any senior secured term loan is refinanced prior to the date that is one year following the execution date of the Second Loan Amendment.
	We incurred $6.1 million of debt financing fees in connection with the Second Loan Amendment all of which were capitalized and are included in other noncurrent assets within the condensed consolidated balance sheet as of September 30, 2013. Parent contributed $3.1 million to fund the payment of these financing fees. For the nine month period ended September 30, 2013, we also incurred $7.0 million of lead arranger banker fees with respect to the Second Loan Amendment, all of which were included in other income (expense), net, within the condensed consolidated statement of operations and comprehensive income (loss). Parent contributed $4.3 million to fund the payment of these lead arranger banker fees.
	Borrowings under the senior secured credit facility bear interest at a rate equal to: (a) Adjusted LIBOR plus 5.00% (subject to a LIBOR floor of 1.75%), or ABR plus 4.00% in the case of the senior secured term loan; (b) Adjusted LIBOR plus 4.50% (subject to a LIBOR floor of 1.75%), or ABR plus 3.50% in the case of the senior secured revolving credit facility, and (c) a per annum fee equal to the spread over Adjusted LIBOR under the senior secured revolving credit facility, along with a fronting fee and issuance and administration fees in the case of revolving letters of credit. On May 24, 2013, upon the closing of the Merger and pursuant the Second Loan Amendment, the interest rate on our senior secured term loan was increased by 0.5%.
	The senior secured term loan amortizes in equal quarterly installments payable on the last day of each calendar quarter with the balance being payable on August 13, 2016. In addition to the scheduled repayments, we are required to prepay borrowings under the senior secured term loan with (1) 100% of the net cash proceeds received from non-ordinary course asset sales or other dispositions, or as a result of a casualty or condemnation, subject to reinvestment provisions and other customary adjustments, (2) 100% of the net proceeds received from the issuance of debt obligations other than certain permitted debt obligations, (3) 50% of excess cash flow (as defined in the senior secured credit facility), if the leverage ratio is equal to or greater than 3.0 to 1.0, or 25% of excess cash flow if the leverage ratio is less than 3.0 to 1.0 but greater than 1.0 to 1.0, reduced by the aggregate amount of optional and mandatory prepayments made on the senior secured term loan during the fourth quarter of the applicable fiscal year. If the leverage ratio is equal to or less than 1.0 to 1.0, we are not required to prepay the senior secured term loan. The excess cash flow calculations (as defined in the senior secured credit facility), are prepared annually as of the last day of each fiscal year. Prepayments of term loan resulting from the excess cash flow calculations are due annually five days after the date that the Annual Report on Form 10-K for such fiscal year is filed with the SEC. Each optional and mandatory prepayment is applied first, in direct order of maturities, to the next four scheduled principal repayment installments of the senior secured term loan and second, to the other principal repayment installments of senior secured term loan on a pro rata basis. During the nine month period ended September 30, 2013, we made principal debt payments totaling $72.6 million, and as such all mandatory quarterly term loan prepayment requirements have been satisfied.
	Upon completion of the Merger Transaction and pursuant to the Second Loan Amendment we were required to reduce our debt with respect to our senior secured term loan and our 10.75% Senior Notes due 2018, to $675.0 million or less by October 21, 2013. As of September 30, 2013, the aggregate outstanding principal amount of our senior debt was $754.4 million. As such, as of September 30, 2013, we had a mandatory principal repayment of $79.4 million.
	The senior secured credit facility requires the Company to maintain a leverage ratio (based upon the ratio of indebtedness for money borrowed to consolidated adjusted EBITDA, as defined in the senior secured credit facility) and an interest coverage ratio (based upon the ratio of consolidated adjusted EBITDA to consolidated cash interest expense), both of which are calculated quarterly. Failure to comply with these financial ratio covenants would result in an event of default under the senior secured credit facility and, absent a waiver or an amendment from the lenders, preclude us from making further borrowings under the senior secured credit facility and permit the lenders to accelerate repayment of all outstanding borrowings under the senior secured credit facility. Based on the formulas set forth in the senior secured credit facility, we are required to maintain a maximum total leverage ratio of 4.0 for the quarter ending September 30, 2013, which is reduced by 0.25 on an annual basis through the maturity date. We are required to maintain a minimum cash interest coverage ratio of 2.00 from the quarter ended September 30, 2013 through the quarter ended September 30, 2014 and 2.25 through the maturity date. As of September 30, 2013, our total leverage and cash interest coverage ratios were 3.37 and 2.17, respectively. Pursuant to the Second Loan Amendment, the definition of change of control and reporting requirements under the senior secured credit facility were amended.
	The senior secured credit facility also contains a number of affirmative and restrictive covenants including limitations on mergers, consolidations and dissolutions, sales of assets, investments and acquisitions, indebtedness, liens, affiliate transactions, and dividends and restricted payments. Under the senior secured credit facility, we are permitted maximum annual capital expenditures of $40.0 million for 2013 and each year thereafter, plus for each year the lesser of (1) a one year carryforward of the unused amount from the previous fiscal year and (2) 50% of the amount permitted for capital expenditures in the previous fiscal year. The senior secured credit facility contains events of default for non-payment of principal and interest when due, a cross-default provision with respect to other indebtedness having an aggregate principal amount of at least $5.0 million and an event of default that would be triggered by a change of control, as defined in the senior secured credit facility. Capital expenditures for the nine month period ended September 30, 2013 were $10.2 million. As of September 30, 2013, we were in compliance with all of the covenants under our senior secured credit facility.
	The obligations under the senior secured credit facility are secured by a lien on substantially all of the assets of the Company and each of the Company’s domestic subsidiary guarantors, including a pledge of equity interests with the exception of the equity interests in our ZionSolutions subsidiary, which includes investments in the NDT fund of approximately $471.1 million as of September 30, 2013, and other special purpose subsidiaries, whose organizational documentation prohibits or limits such pledge.
	On August 13, 2010, we completed a $300.0 million private offering of 10.75% senior notes at a discount rate of 1.3%. The senior notes are governed by an indenture among EnergySolutions and Wells Fargo Bank, National Association, as trustee. Interest on the senior notes is payable semiannually in arrears on February 15 and August 15 of each year beginning on February 15, 2011. The senior notes rank in equal right of payment to all existing and future senior debt and senior in right of payment to all future subordinated debt. In May 2011, we filed a registration statement under the Securities Act, pursuant to a registration rights agreement entered into in connection with the senior notes offering. The SEC declared the registration statement relating to the exchange offer effective on May 27, 2011, and the exchange of the registered senior notes for the unregistered senior notes was consummated on May 31, 2011. We did not receive any proceeds from the exchange offer transaction.
	At any time prior to August 15, 2014, we are entitled to redeem all or a portion of the senior notes at a redemption price equal to 100% of the principal amount of the senior notes plus an applicable make-whole premium, as of, and accrued and unpaid interest to, the redemption date. In addition, on or after August 15, 2014, we may redeem all or a portion of the senior notes at the following redemption prices during the 12-month period commencing on August 15 of the years set forth below, plus accrued and unpaid interest to the redemption date.
	Period	Redemption
		Price
	2014	105.375	%
	2015	102.688	%
	2016 and thereafter	100	%
	The senior notes are guaranteed on a senior unsecured basis by all of our domestic restricted subsidiaries that guarantee the senior secured credit facility. The senior notes and related guarantees are effectively subordinated to our secured obligations, including the senior secured credit facility and related guarantees, to the extent of the value of assets securing such debt. The senior notes are structurally subordinated to all liabilities of each of our subsidiaries that do not guarantee the senior notes. If a change of control of the Company occurs, each holder will have the right to require that we purchase all or a portion of such holder’s senior notes at a purchase price of 101% of the principal amount, plus accrued and unpaid interest to the date of the purchase. The indenture contains, among other things, certain covenants limiting our ability and the ability of one restricted subsidiary to incur or guarantee additional indebtedness, pay dividends or make other restricted payments, make certain investments, create or incur liens, sell assets and subsidiary stock, transfer all or substantially all of our assets, or enter into a merger or consolidation transactions, and enter into transactions with affiliates.
	Each subsidiary co-issuer and guarantor of our senior notes is exempt from reporting under the Exchange Act, pursuant to Rule 12h-5 under the Exchange Act, as the subsidiary co-issuer and each of the subsidiary guarantors is 100% owned by us, and the obligations of the co-issuer and the guarantees of our subsidiary guarantors are full and unconditional and joint and several. There are no significant restrictions on our ability or any subsidiary guarantor to obtain funds from its subsidiaries.
	During the nine month periods ended September 30, 2013 and 2012, we made cash interest payments totaling $61.2 million and $58.7 million, respectively, related to our outstanding debt obligations as of those dates.
	Subsequent Events
	On October 11, 2013, we entered into Amendment No. 3 to the Credit Agreement (the "Third Loan Amendment"). The Third Loan Amendment extended the payment terms on our collective senior debt to 270 days after the Third Loan Amendment's effective date of October 15, 2013, and increased the applicable margin for our senior secured term loan by 0.50% until we reduce the aggregate outstanding amount of senior secured term loan under the amended Credit Agreement and our 10.75% Senior Notes due 2018 to $675.0 million or less. In the event that the outstanding principal amount of our collective senior debt exceeded $675.0 million at the end 180 days from the Third Loan Amendment's effective date, the applicable margin for our senior secured credit facility will be increased by an additional 0.25%. Upon the date that the aggregate outstanding amount of senior debt is $675.0 million or less, the applicable margin for our senior secured credit facility will be decreased by 0.50%, back to the interest rates prior to the effective date of the Third Loan Amendment. In connection with this Third Loan Amendment, we paid a consent fee to each lender equal to 0.25% of the sum of the outstanding term loan and revolving commitments of such lenders as of the effective date of the Third Loan Amendment, and we reimbursed the administrative agent for fees, charges and disbursements of counsel in connection with preparation of the Third Loan Amendment. We prepaid an additional $14.4 million of term loan debt on October 7, 2013 funded by ECP equity contributions to the Company, and we expect to fund the remaining mandatory debt prepayment balance of $65.0 million with our cash flows and a shortfall, if any, will be funded by equity contributions to the Company by ECP or its affiliates.

Facility_and_Equipment_Deconta

Facility and Equipment Decontamination and Decommissioning	9 Months Ended
	Sep. 30, 2013
Asset Retirement Obligation Disclosure [Abstract]	'
Facility and Equipment Decontamination and Decommissioning	'
	Facility and Equipment Decontamination and Decommissioning
	We recognize AROs when we have a legal obligation to perform D&D and removal activities upon retirement of an asset. The fair value of an ARO liability is recognized in the period in which it is incurred, if a reasonable estimate of fair value can be made, and is added to the carrying amount of the associated asset, which is then depreciated over the remaining useful life of the asset, in the case of all our AROs except the Zion Station ARO.
	The ARO established in connection with the Zion Station project differs somewhat from our traditional AROs. The assets acquired in the Zion Station transaction have no fair value, no future useful life and are in a shut-down, non-operating state. As a result, the ARO established in connection with the Zion Station project is not accompanied by a related depreciable asset. Changes to the ARO liability due to accretion expense and changes in cost estimates are recorded in cost of revenue in our consolidated statements of operations and comprehensive income (loss). Also, since we perform most of the work related to the Zion Station ARO with internal resources, we recognized an ARO gain for the difference between our actual costs incurred and the recorded ARO which includes an element of profit. Due to the nature of this contract and the purpose of the license stewardship initiative, we have presented this gain in cost of revenue rather than as a credit to operating expense, as we would with our other AROs.
	Our ARO is based on a cost estimate for a third party to perform the D&D work. This estimate is inflated, using an inflation rate, to the expected time at which the D&D activity will occur, and then discounted back, using our credit adjusted risk free rate, to the present value. Subsequent to the initial measurement, the ARO is adjusted at the end of each period to reflect the passage of time and changes in the estimated future cash flows underlying the obligations.
	Our facility and equipment D&D liabilities consist of the following (in thousands):
		September 30,			December 31,
		2013			2012
	Facilities and equipment ARO—Zion Station	$	445,693		$	553,302
	Facilities and equipment ARO—Clive, UT	29,851			29,300
	Facilities and equipment ARO—other	35,406			35,757
	Total facilities and equipment ARO	510,950			618,359
	Barnwell Closure	4,185			5,845
		515,135			624,204
	Less: current portion	(113,159		)	(138,757		)
		$	401,976		$	485,447
	The following is a rollforward of our facilities and equipment ARO liabilities (in thousands):
		September 30,			December 31,
		2013			2012
	Beginning Balance as of January 1	$	618,359		$	750,649
	Liabilities incurred	256			187
	Liabilities settled	(127,400		)	(159,776		)
	Accretion expense	19,735			30,017
	ARO estimate adjustments	—			(2,718		)
	Ending liability	$	510,950		$	618,359
	For certain of our D&D obligations, we are required to deposit cash relating to our D&D obligation in the form of a restricted cash account, a deposit in escrow, or in a trust fund. D&D deposits consist principally of: (i) funds held in trust for completion of various site clean-up projects and (ii) funds deposited in connection with landfill closure, post-closure and remediation obligations. Although we are required to provide assurance to satisfy some of our D&D obligations in the form of insurance policies, restricted cash accounts, escrows or trust funds, these assurance mechanisms do not extinguish our D&D liabilities. D&D deposits and restricted cash are included in non-current assets in the accompanying condensed consolidated balance sheets.
	The following table presents a summary of the D&D cash deposits available exclusively to fund closure and post-closure obligations related to our ARO liabilities (in thousands):
		September 30,			December 31,
		2013			2012
	Zion Station plant—restricted cash(1)(2)	$	200,000		$	200,000
	Clive, Utah facility—restricted cash(2)	76,487			85,606
	Tennessee facilities—escrow account(3)	5,569			13,363
	Barnwell, South Carolina facility—trust fund	4,185			5,845
	Others—restricted cash	637			662
	__________________________________
	-1	In connection with the execution of the Exelon Agreements, and in fulfillment of NRC regulations, we secured a $200.0 million letter of credit facility to further support the D&D activities at Zion Station. This letter of credit is cash-collateralized with proceeds obtained from our senior secured credit facility.
	-2	Letters of credit issued against our deposit restricted cash account are 101% cash collateralized pursuant to our senior secured credit facility.
	-3	To fund our obligation to clean and remediate our Tennessee facilities and equipment, we have also purchased insurance policies.

EquityBased_Compensation

Equity-Based Compensation	9 Months Ended
	Sep. 30, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Equity-Based Compensation	'
	Equity-Based Compensation
	On May 22, 2013, the board of directors and stockholders of Parent approved the Stock Option Plan of Rockwell Holdco, Inc. (the "Rockwell Plan"), pursuant to which stock options may be granted to the employees, consultants, non-employee directors of Parent or its subsidiaries. Under the Rockwell Plan, 36,087 shares of Parent common stock have been reserved for issuance. Any option granted under the Rockwell Plan will be subject to terms and conditions contained in a written stock option agreement, and any shares of Parent common stock received upon exercise of an option under the Rockwell Plan will be subject to Parent’s Stockholders Agreement. The board of directors of Parent administers the Rockwell Plan and may amend, suspend or terminate the Rockwell Plan at any time.
	As of September 30, 2013, 34,867 options had been issued under the Rockwell Plan to employees of the Company. Our estimates of fair value for the stock options were made using the Black‑Scholes model based upon the fair value of the stock price on the date of grant, volatility of 72.2%, risk-free interest rate of 1.39% per year and expected life of 6.5 years. We are currently using the simplified method to calculate expected holding periods, which is based on the average term of the options and the weighted‑average graded vesting period because we do not have sufficient exercise history to calculate an expected holding period. The risk-free rate is based on the U.S. Treasury rate for the expected life at the time of grant.
	We recognize equity based compensation expense over the instruments' vesting periods based on the instruments' fair values on the measurement date, in SG&A expenses in the consolidated statements of operations and comprehensive income (loss). We recorded $1.1 million and $1.5 million of stock based compensation expense for the three and nine month periods ended September 30, 2013, respectively, related to stock option grants issued during 2013. As of September 30, 2013, we had $21.4 million of unrecognized compensation expense related to outstanding stock options, which will be recognized over a weighted-average period of 4.6 years.
	For the three month periods ended September 30, 2013 and 2012, we recorded equity-based compensation expense related to our former plans of $0.0 and $0.7 million, respectively. For the nine month periods ended September 30, 2013 and 2012, we recorded stock based compensation expense related to former plans of $3.6 million and $3.4 million, respectively.
	On May 24, 2013, as a result of the completion of the Merger, a change in control occurred that resulted in immediate vesting of all outstanding share based awards. The acceleration in vesting resulted from a preexisting change in control provision included in the terms of the awards issued under the former plans. Payments to grant holders due to the change in control provision were approximately $21.0 million as of September 30, 2013.
	As of September 30, 2013 and December 31, 2012, we had recorded liabilities of $6.5 million and $2.5 million, respectively, related to phantom stock awards to be settled in cash, which are included in accrued expenses and other current liabilities in the condensed consolidated balance sheets. For the three and nine month periods ended September 30, 2013, we recorded $0 million and $19.8 million, respectively, of compensation expense related to these awards. For the three and nine month periods ended September 30, 2012, we recorded $0.8 million and $1.7 million, respectively, of compensation expense related to these awards. Compensation expense related to phantom stock awards has been fully recognized as of September 30, 2013.

Income_Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2013
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	Income Taxes
	We recognized income tax expense of $6.2 million and an income tax benefit of $20,000 for the nine month periods ended September 30, 2013 and 2012, respectively, for year-to-date effective rates of negative 9.6% and 0.1%, respectively, based on an estimated annual effective tax rate method. Income tax expense arises from income for certain entities in the U.K. and for the Zion NDT fund. No benefits from losses in the U.S. and other entities in the U.K. are available to offset tax expense due to their respective full valuation allowance positions.
	The 2013 effective tax rate differs from the statutory rate of 35% primarily as a result of the small amount of tax expense on U.K. and Zion NDT fund income relative to consolidated pretax book losses which include large losses in the U.S. and the U.K. for which no benefit is recorded due to their full valuation allowance positions. The year-to-date effective rate was also impacted by lower statutory tax rates for foreign jurisdictions and the NDT fund, the tax benefit of foreign research and development credits, and a benefit recorded for the effect of a statutory rate reduction in the U.K. enacted during the quarter.
	The 2012 effective tax rate differs from the statutory rate of 35% primarily as a result of the amount of income tax expense relative to the amount of pretax book income, lower tax on income in foreign jurisdictions and the NDT fund, the tax benefit of foreign research and development credits, income tax expense due to the change in management’s assertion with respect to unremitted foreign earnings, offset by foreign tax credits and further offset by the release of a domestic valuation allowance on net operating losses resulting from an increase in taxable income due to the partial change in the reinvestment assertion, and the reversal of certain unrecognized tax benefits.
	During the nine month period ended September 30, 2013, an extension of the research and development credit in the U.S. was signed into law. While the Company fully intends to take advantage of the research and development credit for the 2012 and 2013 tax years, no benefit has been recorded in the financial statements due to the full valuation allowance position in the U.S.
	During the nine month periods ended September 30, 2013 and 2012, we made income tax payments, net of income tax refunds, of $8.3 million and $16.6 million, respectively.
	As of September 30, 2013 and December 31, 2012, we had $0.1 million and $0.1 million, respectively, of gross unrecognized tax benefits. These tax benefits were accounted for under guidance for accounting for uncertainties in income taxes. During the nine month period ended September 30, 2012, the Company recognized an income tax benefit of $1.1 million, due to the expiration of the statute of limitations to examine and challenge our tax positions by the taxing authorities in the jurisdictions in which we operate.

Segment_Reporting_and_Business

Segment Reporting and Business Concentrations	9 Months Ended
	Sep. 30, 2013
Segment Reporting [Abstract]	'
Segment Reporting and Business Concentrations	'
	Segment Reporting and Business Concentrations
	We report our results through two major operating groups: the Government Group and the Global Commercial Group. The Government Group derives its revenue from government customers in the U.S., whereas the Global Commercial Group provides a broad range of services both nationally and internationally and reports its results under three separate operating business divisions: Commercial Services ("CS"), Logistics, Processing and Disposal ("LP&D") and International.
	The following table presents our segment information (in thousands):
		As of and for the Three Month Period Ended September 30, 2013
		Government		Global Commercial Group								Corporate
												Unallocated
		Group		CS			LP&D		International			Items			Consolidated
	Revenue from external customers(1)(2)	$	43,458	$	38,961		$	53,104	$	256,951		$	—		$	392,474
	Income (loss) from operations(2)(3)	8,424		4,280			16,021		(2,920		)	(15,566		)	10,239
	Depreciation, amortization and accretion expense(4)	941		7,003			6,853		1,968			740			17,505
	Purchases of property, plant and equipment	4		215			2,874		578			69			3,740
		As of and for the Three Month Period Ended September 30, 2012
		Government		Global Commercial Group								Corporate
												Unallocated
		Group		CS			LP&D		International			Items			Consolidated
	Revenue from external customers(1)(2)	$	43,972	$	48,631		$	62,407	$	289,147		$	—		$	444,157
	Income (loss) from operations(2)(3)	10,422		1,702			18,956		5,411			(17,827		)	18,664
	Depreciation, amortization and accretion expense(4)	952		7,936			6,368		1,980			1,313			18,549
	Purchases of property, plant and equipment	—		(437		)	2,509		869			531			3,472
		As of and for the Nine Month Period Ended September 30, 2013
		Government		Global Commercial Group								Corporate
												Unallocated
		Group		CS			LP&D		International			Items			Consolidated
	Revenue from external customers(1)(2)	$	131,141	$	123,045		$	153,051	$	922,483		$	—		$	1,329,720
	Income (loss) from operations(2)(3)	15,808		10,335			40,906		20,056			(84,089		)	3,016
	Depreciation, amortization and accretion expense(4)	2,808		20,883			19,920		5,925			2,918			52,454
	Goodwill	73,594		90,129			89,548		55,180			—			308,451
	Other long-lived assets(5)	12,417		17,159			257,780		44,746			2,242			334,344
	Purchases of property, plant and equipment	47		375			8,784		95			858			10,159
	Total assets(6)	151,696		1,194,503			481,058		480,640			40,480			2,348,377
		As of and for the Nine Month Period ended September 30, 2012
		Government		Global Commercial Group								Corporate
												Unallocated
		Group		CS			LP&D		International			Items			Consolidated
	Revenue from external customers(1)(2)	$	124,744	$	129,110		$	155,768	$	917,848		$	—		$	1,327,470
	Income (loss) from operations(2)(3)	13,212		4,406			30,758		31,699			(58,574		)	21,501
	Depreciation, amortization and accretion expense(4)	3,397		23,551			19,150		5,801			4,702			56,601
	Goodwill	73,594		90,129			89,548		55,010			—			308,281
	Other long-lived assets(5)	15,913		18,369			267,466		52,980			10,464			365,192
	Purchases of property, plant and equipment	—		3,503			7,969		1,630			1,486			14,588
	Total assets(6)	171,117		1,524,906			557,954		540,375			58,525			2,852,877
	______________________
	-1	We eliminate intersegment revenue in consolidation. Intersegment revenue for the three month periods ended September 30, 2013, and 2012 was $4.2 million and $5.1 million, respectively. Intersegment revenue for the nine month periods ended September 30, 2013, and 2012 was $15.3 million and $18.4 million, respectively. Revenue by segment represent revenue earned based on third-party billings to customers.
	-2	Results of our operations for services provided to our customers in Canada, Asia and Europe are included in our International division.
	-3	For the three month period ended September 30, 2013, we recorded a $3.8 million of income from our unconsolidated joint ventures of which $0.4 million loss is attributable to our LP&D operations and $4.2 million of income is attributable to the Government Group. For the three month period ended September 30, 2012, we recorded $4.3 million of income from our unconsolidated joint ventures of which $0.1 million loss is attributable to LP&D operations and $4.4 million of income is attributable to the Government Group. For the nine month period ended September 30, 2013, we recorded a $4.4 million of income from our unconsolidated joint ventures of which $1.3 million loss is attributable to our LP&D operations and $5.7 million of income is attributable to the Government Group. For the nine month period ended September 30, 2012, we recorded $7.4 million of income from our unconsolidated joint ventures of which $0.1 million loss is attributable to LP&D operations and $7.5 million of income is attributable to the Government Group.
	-4	Depreciation, amortization and accretion expenses ("DA&A") are included in cost of revenue and SG&A expenses in the accompanying condensed consolidated statements of operations and comprehensive income (loss). DA&A expenses included in cost of revenue for the three month periods ended September 30, 2013, and 2012 were $12.2 million and $13.2 million, respectively. DA&A expenses included in cost of revenue for the nine month periods ended September 30, 2013, and 2012 were $36.6 million and $39.9 million, respectively. DA&A expenses included in SG&A for the three month periods ended September 30, 2013, and 2012 were $5.3 million and $5.6 million, respectively. DA&A expenses included in SG&A for the nine month periods ended September 30, 2013, and 2012 were $15.8 million and $16.7 million, respectively.
	-5	Other long-lived assets include property, plant and equipment and other intangible assets.
	-6	Corporate unallocated assets relate primarily to income tax receivables, deferred tax assets, deferred financing costs, prepaid expenses, and property, plant and equipment that benefit the entire Company and cash.

Pension_Plans

Pension Plans	9 Months Ended
	Sep. 30, 2013
Compensation and Retirement Disclosure [Abstract]	'
Pension Plans	'
	Pension Plans
	Net periodic benefit costs related to the Magnox pension plan consisted of the following (in thousands):
		For The Three Month						For The Nine Month
		Period Ended						Period Ended
		September 30,						September 30,
		2013			2012			2013			2012
	Service cost	$	14,183		$	14,021		$	42,455		$	42,018
	Interest cost	38,634			39,692			115,650			118,952
	Expected return on plan assets	(45,183		)	(42,852		)	(135,253		)	(128,421		)
	Net actuarial loss	77			119			232			355
	Total net periodic benefit costs	$	7,711		$	10,980		$	23,084		$	32,904

Restructuring

Restructuring	9 Months Ended
	Sep. 30, 2013
Restructuring and Related Activities [Abstract]	'
Restructuring	'
	Restructuring
	In 2012, we initiated a restructuring plan (the "Restructuring Plan") to reduce operating costs and improve profitability within our operations in the U.S. Under the Restructuring Plan, we reduced our facility footprint and implemented a reduction of force across multiple business segments and functions. For the three and nine month periods ended September 30, 2013, we recognized $0.0 and $1.8 million, respectively, in restructuring charges associated with lease and contract terminations. These charges are included in the condensed consolidated statements of operations and comprehensive income (loss) under cost of revenue related to our LP&D operations. For the three and nine month periods ended September 30, 2012, we recognized $3.2 million and $9.4 million, respectively, in restructuring charges related to severance and employee termination benefits, which is included in the condensed consolidated statements of operations and comprehensive income (loss) under corporate SG&A. The corresponding liabilities as of September 30, 2013 and December 31, 2012 were $1.4 million and $6.2 million, respectively, and are included in accrued expenses and other current liabilities and other noncurrent liabilities in the condensed consolidated balance sheets. In February 2013, we announced that we had substantially completed the Restructuring Plan. The remaining unpaid termination benefits are expected to be paid within the next six months.
	In 2009, we started an initial organizational review of our Magnox sites and identified an opportunity to reduce the existing workforce, primarily at three sites at which decommissioning was relatively close to completion with only a few projects remaining. The termination plan was presented in two phases and was approved by the NDA. As a result of overstaffing at the Magnox sites, approximately 300 employees left us on a voluntary basis. For the nine month period ended September 30, 2013, we recognized an additional $55.6 million of expected employee termination benefits related to the termination of approximately 200 employees at the Bradwell site, which is rapidly moving into the early care and maintenance phase. Additionally, we also accrued employee termination benefits for the Chapelcross site, which is decreasing in size following completion of defueling activities and is preparing for further decommissioning, as well as the Dungeness, Oldbury, Trawsfynydd sites, which are getting ready to re-shape the workforce following cessation of power generation in 2014. No termination benefits were recognized for the nine month period ended September 30, 2012. These benefits are included in cost of revenue in the accompanying condensed consolidated statements of operations and comprehensive income (loss) related to our International operations. The corresponding liability as of September 30, 2013 and December 31, 2012 was $52.0 million and $5.7 million, respectively, and is included in accrued expenses and other current liabilities and other long term liabilities in the condensed consolidated balance sheets. The remaining liability is expected to be paid over approximately the next 24 months.
	The following is a reconciliation of the beginning and ending liability balances related to the Magnox employee termination benefits (in thousands):
		September 30,			December 31,
		2013			2012
	Beginning liability	$	5,695		$	32,659
	Additions	55,555			—
	Payments	(10,937		)	(27,888		)
	Effect of exchange rate	1,670			924
	Ending liability	51,983			5,695
	Less current portion	(24,305		)	—
		$	27,678		$	5,695
	The termination plan and employee benefits paid for the termination of these employees are in accordance with the existing employee and the trade union agreements and were pre-approved by the NDA. All employee termination benefits are treated as part of the normal Magnox cost base and are reimbursed by the NDA.

Commitments_and_Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2013
Commitments and Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	Commitments and Contingencies
	We may become subject to various claims and legal proceedings covering matters that may arise in the ordinary course of our business activities. As of September 30, 2013, we were not involved in any legal proceedings that we believe would have a material adverse effect on our consolidated financial position, operating results or cash flows.
	Except as set forth below, there have been no material developments to the legal proceedings disclosed under Part I, Item 3. "Legal Proceedings" in our 2012 Annual Report and Part II, Item 1. "Legal Proceedings" in our Quarterly Reports on Form 10-Q for the quarters ended March 31, 2013 and June 30, 2013.
	Pennington et al. v. ZionSolutions, LLC, et al.
	As previously disclosed, on September 13, 2011, the defendants in the matter titled Pennington et al. v. ZionSolutions, LLC, et al. filed a motion to dismiss the plaintiffs' claims. On July 29, 2013, the U.S. District Court for the Northern District of Illinois, Eastern Division dismissed the entire lawsuit. The plaintiffs have appealed to the United States Court of Appeals for the Seventh Circuit.

Guarantor_and_NonGuarantor_Fin

Guarantor and Non-Guarantor Financial Information	9 Months Ended
	Sep. 30, 2013
Guarantor and Non-Guarantor Financial Information	'
Guarantor and Non-Guarantor Financial Information	'
	Guarantor and Non-Guarantor Financial Information
	The 2018 senior notes were issued by EnergySolutions, Inc., the parent company, and EnergySolutions, LLC (together with EnergySolutions, Inc., the "Issuers"). The senior notes are jointly and severally guaranteed on a full and unconditional basis by each of the EnergySolutions, Inc.’s current and future domestic 100% owned subsidiaries that are guarantors under the senior secured credit facility, other than ZionSolutions LLC, which was established for the purpose of the Company’s license stewardship initiative, as well as up to five other special purpose subsidiaries that may be established for similar license stewardship projects, and certain other non-operating or immaterial subsidiaries.
	Presented below is the condensed consolidating financial information of the issuers, our subsidiaries that are guarantors (the "Guarantor Subsidiaries"), and our subsidiaries that are not guarantors (the "Non-Guarantor Subsidiaries"). The condensed consolidating financial information reflects the investments of EnergySolutions, Inc. in the Guarantor Subsidiaries and the Non-Guarantor Subsidiaries using the equity method of accounting.
	CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS
	For The Three Month Period ended September 30, 2013
	(in thousands)
		Energy			Energy			Guarantor			Non-			Eliminations			Consolidated
		Solutions,			Solutions,			Subsidiaries			Guarantor
		Inc.			LLC						Subsidiaries
	Revenue	$	—		$	21,709		$	89,206		$	293,904		$	(12,345	)	$	392,474
	Cost of revenue	—			(7,540		)	(69,509		)	(291,285		)	12,345			(355,989		)
	Gross profit	—			14,169			19,697			2,619			—			36,485
	Selling, general and administrative expenses	—			(12,867		)	(12,153		)	(5,026		)	—			(30,046		)
	Equity in income of unconsolidated joint ventures	—			—			3,800			—			—			3,800
	Operating income (loss)	—			1,302			11,344			(2,407		)	—			10,239
	Interest expense	—			(16,546		)	—			(3,932		)	—			(20,478		)
	Income (loss) from subsidiaries	(7,653		)	7,666			—			—			(13		)	—
	Other, net	—			(75		)	(12		)	2,360			—			2,273
	Income (loss) before income taxes	(7,653		)	(7,653		)	11,332			(3,979		)	(13		)	(7,966		)
	Provision for income taxes	2,798			—			—			312			—			3,110
	Net income (loss)	(4,855		)	(7,653		)	11,332			(3,667		)	(13		)	(4,856		)
	Less: net loss attributable to noncontrolling interests	—			—			—			1			—			1
	Net income (loss) attributable to EnergySolutions	$	(4,855	)	$	(7,653	)	$	11,332		$	(3,666	)	$	(13	)	$	(4,855	)
	Other comprehensive income (loss):
	Net income (loss)	(4,855		)	(7,653		)	11,332			(3,667		)	(13		)	(4,856		)
	Foreign currency translation adjustments, net of taxes	—			—			—			9,302			—			9,302
	Change in unrecognized actuarial loss	—			—			—			462			—			462
	Other comprehensive income (loss)	(4,855		)	(7,653		)	11,332			6,097			(13		)	4,908
	Less: net loss attributable to noncontrolling interests	—			—			—			1			—			1
	Comprehensive income (loss) attributable to EnergySolutions	$	(4,855	)	$	(7,653	)	$	11,332		$	6,098		$	(13	)	$	4,909
	CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS
	For The Nine Month Period ended September 30, 2013
	(in thousands)
		Energy			Energy			Guarantor			Non-			Eliminations			Consolidated
		Solutions,			Solutions,			Subsidiaries			Guarantor
		Inc.			LLC						Subsidiaries
	Revenue	$	—		$	50,364		$	280,609		$	1,039,953		$	(41,206	)	$	1,329,720
	Cost of revenue	—			(18,739		)	(226,409		)	(995,476		)	41,206			(1,199,418		)
	Gross profit	—			31,625			54,200			44,477			—			130,302
	Selling, general and administrative expenses	—			(79,842		)	(35,843		)	(15,979		)	—			(131,664		)
	Equity in income of unconsolidated joint ventures	—			—			4,378			—			—			4,378
	Operating income (loss)	—			(48,217		)	22,735			28,498			—			3,016
	Interest expense	—			(46,895		)	—			(11,026		)	—			(57,921		)
	Income (loss) from subsidiaries	(70,117		)	31,559			—			—			38,558			—
	Other, net	—			(6,564		)	154			(2,816		)	—			(9,226		)
	Income (loss) before income taxes	(70,117		)	(70,117		)	22,889			14,656			38,558			(64,131		)
	Provision for income taxes	(168		)	—			—			(5,987		)	—			(6,155		)
	Net income (loss)	(70,285		)	(70,117		)	22,889			8,669			38,558			(70,286		)
	Less: net income attributable to noncontrolling interests	—			—			—			1			—			1
	Net income (loss) attributable to EnergySolutions	$	(70,285	)	$	(70,117	)	$	22,889		$	8,670		$	38,558		$	(70,285	)
	Other comprehensive income (loss):
	Net income (loss)	(70,285		)	(70,117		)	22,889			8,669			38,558			(70,286		)
	Foreign currency translation adjustments, net of taxes	—			—			—			349			—			349
	Change in unrecognized actuarial loss	—			—			—			(13		)	—			(13		)
	Other comprehensive income (loss)	(70,285		)	(70,117		)	22,889			9,005			38,558			(69,950		)
	Less: net income attributable to noncontrolling interests	—			—			—			1			—			1
	Comprehensive income (loss) attributable to EnergySolutions	$	(70,285	)	$	(70,117	)	$	22,889		$	9,006		$	38,558		$	(69,949	)
	CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS
	For The Three Month Period ended September 30, 2012
	(in thousands)
		Energy			Energy			Guarantor			Non-			Eliminations			Consolidated
		Solutions,			Solutions,			Subsidiaries			Guarantor
		Inc.			LLC						Subsidiaries
Revenue	$	—		$	23,760		$	161,114		$	297,738		$	(38,455	)	$	444,157
Cost of revenue	—			(10,110		)	(137,284		)	(289,061		)	38,455			(398,000		)
Gross profit	—			13,650			23,830			8,677			—			46,157
Selling, general and administrative expenses	—			(21,012		)	(5,471		)	(5,296		)	—			(31,779		)
Equity in income of unconsolidated joint ventures	—			—			4,286			—			—			4,286
Operating income (loss)	—			(7,362		)	22,645			3,381			—			18,664
Interest expense	—			(14,355		)	—			(3,281		)	—			(17,636		)
Income (loss) from subsidiaries	20,298			46,894			—			—			(67,192		)	—
Other, net	—			(4,879		)	(2,426		)	19,673			—			12,368
Income (loss) before income taxes	20,298			20,298			20,219			19,773			(67,192		)	13,396
Benefit from (provision for) income taxes	(10,246		)	—			—			6,899			—			(3,347		)
Net income (loss)	10,052			20,298			20,219			26,672			(67,192		)	10,049
Less: net income attributable to noncontrolling interests	—			—			—			3			—			3
Net income (loss) attributable to EnergySolutions	$	10,052		$	20,298		$	20,219		$	26,675		$	(67,192	)	$	10,052
Other comprehensive income (loss):
Net income (loss)	10,052			20,298			20,219			26,672			(67,192		)	10,049
Foreign currency translation adjustments, net of taxes	—			5,443			—			5,443			(5,443		)	5,443
Change in unrecognized actuarial gain	—			273			—			273			(273		)	273
Other comprehensive income (loss)	10,052			26,014			20,219			32,388			(72,908		)	15,765
Less: net income attributable to noncontrolling interests	—			—			—			3			—			3
Comprehensive income (loss) attributable to EnergySolutions	$	10,052		$	26,014		$	20,219		$	32,391		$	(72,908	)	$	15,768
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS
For The Nine Month Period ended September 30, 2012
(in thousands)
	Energy			Energy			Guarantor			Non-			Eliminations			Consolidated
	Solutions,			Solutions,			Subsidiaries			Guarantor
	Inc.			LLC						Subsidiaries
Revenue	$	—		$	48,555		$	348,592		$	987,946		$	(57,623	)	$	1,327,470
Cost of revenue	—			(27,738		)	(297,795		)	(945,820		)	57,623			(1,213,730		)
Gross profit	—			20,817			50,797			42,126			—			113,740
Selling, general and administrative expenses	—			(66,150		)	(18,640		)	(14,871		)	—			(99,661		)
Equity in income of unconsolidated joint ventures	—			—			7,422			—			—			7,422
Operating income (loss)	—			(45,333		)	39,579			27,255			—			21,501
Interest expense	—			(42,841		)	—			(9,981		)	—			(52,822		)
Income (loss) from subsidiaries	15,275			108,154			—			—			(123,429		)	—
Other, net	—			(4,705		)	(1,182		)	51,980			—			46,093
Income (loss) before income taxes	15,275			15,275			38,397			69,254			(123,429		)	14,772
Benefit from (provision for) income taxes	(448		)	—			—			468			—			20
Net income (loss)	14,827			15,275			38,397			69,722			(123,429		)	14,792
Less: net income attributable to noncontrolling interests	—			—			—			35			—			35
Net income (loss) attributable to EnergySolutions	$	14,827		$	15,275		$	38,397		$	69,757		$	(123,429	)	$	14,827
Other comprehensive income (loss):
Net income (loss)	14,827			15,275			38,397			69,722			(123,429		)	14,792
Foreign currency translation adjustments, net of taxes	—			6,821			—			6,821			(6,821		)	6,821
Change in unrecognized actuarial gain	—			242			—			242			(242		)	242
Other comprehensive income (loss)	14,827			22,338			38,397			76,785			(130,492		)	21,855
Less: net income attributable to noncontrolling interests	—			—			—			35			—			35
Comprehensive income (loss) attributable to EnergySolutions	$	14,827		$	22,338		$	38,397		$	76,820		$	(130,492	)	$	21,890
CONDENSED CONSOLIDATING BALANCE SHEET
As of September 30, 2013
(in thousands)
	Energy			Energy			Guarantor			Non-			Eliminations			Consolidated
	Solutions,			Solutions,			Subsidiaries			Guarantor
	Inc.			LLC						Subsidiaries
Assets
Total current assets	$	4,735		$	36,449		$	91,135		$	515,563		$	(2,695	)	$	645,187
Property, plant and equipment, net	—			53,900			58,308			2,202			—			114,410
Goodwill	—			29,765			223,506			55,180			—			308,451
Intangibles, net	—			157,345			20,046			42,543			—			219,934
Restricted cash	—			89,460			4,185			200,398			—			294,043
Nuclear decommissioning trust fund	—			—			—			348,159			—			348,159
Long-term deferred costs less current portion	—			—			—			288,884			—			288,884
Investment in subsidiaries	(79,335		)	647,701			—			—			(568,366		)	—
Intercompany receivable	313,214			—			145,755			7,497			(466,466		)	—
Other long term assets	—			11,530			19,756			98,023			—			129,309
TOTAL ASSETS	$	238,614		$	1,026,150		$	562,691		$	1,558,449		$	(1,037,527	)	$	2,348,377
Liabilities and Equity
Intercompany loan payable	$	—		$	460,578		$	—		$	—		$	(460,578	)	$	—
Intercompany payable	—						2,694			5,888			(8,582		)	—
Total current liabilities	—			141,259			52,796			452,561						646,616
Long-term debt, less current portion	—			468,688			—			197,347			—			666,035
Facility and equipment decontamination and decommissioning liabilities, current portion	—			31,708			37,716			332,552			—			401,976
Unearned revenue, less current portion	—			0			—			291,912			—			291,912
Other liabilities, net	—			3,252			1,060			98,413			—			102,725
Equity	238,614			(79,335		)	468,425			179,277			(568,367		)	238,614
Noncontrolling interests	—			—			—			499			—			499
TOTAL LIABILITIES AND EQUITY	$	238,614		$	1,026,150		$	562,691		$	1,558,449		$	(1,037,527	)	$	2,348,377
CONDENSED CONSOLIDATING BALANCE SHEET
As of December 31, 2012
(in thousands)
	Energy			Energy			Guarantor			Non-			Eliminations			Consolidated
	Solutions,			Solutions,			Subsidiaries			Guarantor
	Inc.			LLC						Subsidiaries
Assets
Total current assets	$	6,423		$	128,479		$	115,603		$	545,483		$	(1,453	)	$	794,535
Property, plant and equipment, net	—			60,657			54,112			2,975			—			117,744
Goodwill	—			29,765			223,506			55,337			—			308,608
Intangibles, net	—			160,198			31,186			48,167			—			239,551
Restricted cash	—			110,471			5,867			200,416			—			316,754
Nuclear decommissioning trust fund	—			—			—			445,989			—			445,989
Long-term deferred costs less current portion	—			—			—			360,185			—			360,185
Investment in subsidiaries	(9,554		)	616,038			—			—			(606,484		)	—
Intercompany receivable	303,550			—			108,032			1,302			(412,884		)	—
Other long term assets	—			10,884			16,450			44,762			—			72,096
TOTAL ASSETS	$	300,419		$	1,116,492		$	554,756		$	1,704,616		$	(1,020,821	)	$	2,655,462
Liabilities and Stockholders’ Equity
Intercompany loan payable	$	—		$	401,015		$	—		$	—		$	(401,015	)	$	—
Intercompany payable	—			—			1,441			11,869			(13,310		)	—
Total current liabilities	—			88,815			67,198			488,779			(12		)	644,780
Long-term debt, less current portion	—			601,836			—			196,741			—			798,577
Facility and equipment decontamination and decommissioning liabilities, current portion	—			31,206			39,358			414,883			—			485,447
Unearned revenue, less current portion	—			0			—			366,710			—			366,710
Other liabilities, net	—			3,174			1,051			54,804			—			59,029
Stockholders’ equity	300,419			(9,554		)	445,708			170,330			(606,484		)	300,419
Noncontrolling interests	—			—			—			500			—			500
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$	300,419		$	1,116,492		$	554,756		$	1,704,616		$	(1,020,821	)	$	2,655,462
CONDENSED CONSOLIDATING STATEMENT OF CASH FLOW
For The Nine Month Period ended September 30, 2013
(in thousands)
	Energy			Energy			Guarantor			Non-			Eliminations			Consolidated
	Solutions,			Solutions,			Subsidiaries			Guarantor
	Inc.			LLC						Subsidiaries
Cash flow from operating activities
Net cash provided by (used in) operating activities	$	(63,214	)	$	(41,433	)	$	50,806		$	(1,195	)	$	44,118		$	(10,918	)
Cash flow from investing activities
Purchases of property, plant and equipment	—			(1,345		)	(8,684		)	(130		)	—			(10,159		)
Purchase of investments in nuclear decommissioning trust fund	—			—			—			(673,864		)	—			(673,864		)
Proceeds from sales of nuclear decommissioning trust fund investments	—			—			—			677,488			—			677,488
Net cash provided by (used in) investing activities	—			(1,345		)	(8,684		)	3,494			—			(6,535		)
Cash flows from financing activities
Intercompany loan receivable	1,207			—			(43,917		)	—			42,710			—
Intercompany loan payable				50,224			(1,514		)	—			(48,710		)	—
Investment in subsidiary	69,781			(31,663		)	—			—			(38,118		)	—
Repayments of long term debt	—			(72,593		)	—			—			—			(72,593		)
Restricted cash held as collateral of letter of credit obligations	—			21,000			—			—			—			21,000
Debt financing fees	—			(1,960		)	—			(1,200		)	—			(3,160		)
Minimum tax withholding on restricted stock awards	(432		)	—			—			—			—			(432		)
Repurchase of common stock	(7,342		)	—			—			—			—			(7,342		)
Repayments of capital lease obligations	—			(573		)	—			—			—			(573		)
Net cash provided by (used in) financing activities	63,214			(35,565		)	(45,431		)	(1,200		)	(44,118		)	(63,100		)
Effect of exchange rate on cash	—			—			—			520			—			520
Net increase (decrease) in cash and cash equivalents	—			(78,343		)	(3,309		)	1,619			—			(80,033		)
Cash and cash equivalents, beginning of period	—			93,080			3,371			37,740			—			134,191
Cash and cash equivalents, end of period	$	—		$	14,737		$	62		$	39,359		$	—		$	54,158
CONDENSED CONSOLIDATING STATEMENT OF CASH FLOW
For The Nine Month Period ended September 30, 2012
(in thousands)
	Energy			Energy			Guarantor			Non-			Eliminations			Consolidated
	Solutions,			Solutions,			Subsidiaries			Guarantor
	Inc.			LLC						Subsidiaries
Cash flow from operating activities
Net cash provided by (used in) operating activities	$	14,223		$	121,545		$	51,259		$	(18,679	)	$	(152,582	)	$	15,766
Cash flow from investing activities
Purchase of investments in nuclear decommissioning trust fund	—			—			—			(651,933		)	—			(651,933		)
Proceeds from sales of nuclear decommissioning trust fund investments	—			—			—			654,798			—			654,798
Purchases of property, plant and equipment	—			(7,305		)	(5,635		)	(1,648		)	—			(14,588		)
Purchases of intangible assets	—			(763		)	—			—			—			(763		)
Proceeds from disposition of property, plant and equipment	—			—			5,317			—			—			5,317
Net cash provided by (used in) investing activities	—			(8,068		)	(318		)	1,217			—			(7,169		)
Cash flows from financing activities
Intercompany loan receivable	6,740			31,078			(46,884		)	—			9,066			—
Intercompany loan payable	—			(6,740		)	—			—			6,740			—
Investment in subsidiary	(22,340		)	(82,874		)	—			(31,562		)	136,776			—
Dividend: minority interest	—			—			—			(158		)	—			(158		)
Proceeds from issuance of common stock	1,497			—			—			—			—			1,497
Minimum tax withholding on restricted stock awards	(120		)	—			—			—			—			(120		)
Repayments of capital lease obligations	—			—			(629		)	—			—			(629		)
Net cash provided by (used in) financing activities	(14,223		)	(58,536		)	(47,513		)	(31,720		)	152,582			590
Effect of exchange rate on cash	—			—			—			1,513			—			1,513
Net increase (decrease) in cash and cash equivalents	—			54,941			3,428			(47,669		)	—			10,700
Cash and cash equivalents, beginning of period	—			694			—			76,519			—			77,213
Cash and cash equivalents, end of period	$	—		$	55,635		$	3,428		$	28,850		$	—		$	87,913

Trust_Fund_Investments_Tables

Trust Fund Investments (Tables)	9 Months Ended
	Sep. 30, 2013
Investments, Debt and Equity Securities [Abstract]	'
Schedule of NDT fund investments	'
	NDT fund investments consisted of the following (in thousands):
		As of September 30, 2013											As of December 31, 2012
		Amortized			Gross		Gross			Estimated			Amortized		Gross		Gross			Estimated
		cost			unrealized		unrealized			fair value			cost		unrealized		unrealized			fair value
					gains		losses								gains		losses
	Assets
	Receivables for securities sold	$	16,995		$	—	$	—		$	16,995		$	7,422	$	—	$	—		$	7,422
	Investments
	Corporate debt securities	213,120			8,246		(3,379		)	217,987			223,662		17,940		(575		)	241,027
	Equity securities	400			4		—			404			10,117		4,249		(61		)	14,305
	Direct lending securities	109,813			9,923		(4,149		)	115,587			98,138		6,026		(1,721		)	102,443
	Debt securities issued by states of the U.S.	23,730			869		(414		)	24,185			31,306		3,806		—			35,112
	Cash and cash equivalents	21,931			—		—			21,931			23,686		—		—			23,686
	Commingled funds	—			—		—			—			4,017		527		—			4,544
	Debt securities issued by the U.S. Treasury and other U.S. government corporations and agencies	78,845			109		(4,500		)	74,454			166,925		3,912		(880		)	169,957
	Total investments	447,839			19,151		(12,442		)	454,548			557,851		36,460		(3,237		)	591,074
	Total assets	464,834			19,151		(12,442		)	471,543			565,273		36,460		(3,237		)	598,496
	Liabilities
	Payable for securities purchased	(425		)	—		—			(425		)	—		—		—			—
	Total liabilities	(425		)	—		—			(425		)	—		—		—			—
	Net assets held by the NDT fund	$	464,409		$	19,151	$	(12,442	)	471,118			$	565,273	$	36,460	$	(3,237	)	598,496
	Less: current portion									(122,959		)								(152,507		)
	Long-term investments									$	348,159									$	445,989

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2012
Fair Value Disclosures [Abstract]	'
Schedule of the NDT fund investments measured at fair value	'
	The following table presents the NDT fund investments measured at fair value (in thousands):
		As of September 30, 2013										As of December 31, 2012
		Total			Quoted Prices			Significant		Significant		Total		Quoted Prices		Significant		Significant
		Investments			in Active			Other		Unobservable		Investments		in Active		Other		Unobservable
		at Fair			Markets for			Observable		Inputs		at Fair		Markets for		Observable		Inputs
		Value			Identical			Inputs		Level 3		Value		Identical		Inputs		Level 3
					Assets			Level 2						Assets		Level 2		(revised)
					Level 1									Level 1
	Assets
	Receivables for securities sold	$	16,995		$	16,995		$	—	$	—	$	7,422	$	7,422	$	—	$	—
	Investments
	Cash and cash equivalents	21,931			21,931			—		—		23,686		23,686		—		—
	Fixed income securities(1)	316,626			74,453			242,173		—		446,096		125,605		320,491		—
	Equity securities(2)	404			404			—		—		14,305		14,305		—		—
	Direct lending securities(3)	115,587			—			—		115,587		102,443		—		—		102,443
	Units of participation(4)	—			—			—		—		4,544		—		4,544		—
	Total investments	454,548			96,788			242,173		115,587		591,074		163,596		325,035		102,443
	Total assets	471,543			113,783			242,173		115,587		598,496		171,018		325,035		102,443
	Liabilities
	Payable for securities purchased	(425		)	(425		)	—		—		—		—		—		—
	Total liabilities	(425		)	(425		)	—		—		—		—		—		—
	Net assets held by the NDT fund	$	471,118		$	113,358		$	242,173	$	115,587	$	598,496	$	171,018	$	325,035	$	102,443
	_____________________________
	-1	For fixed income securities, multiple prices from pricing services are obtained from pricing vendors whenever possible, which enables cross- provider validations in addition to checks for unusual daily movements. A primary price source is identified based on asset type, class or issue for each security. The trustee monitors prices supplied by pricing services and may use a supplemental price source or change the primary price source of a given security if the portfolio managers challenge an assigned price and the trustee determines that another price source is considered to be preferable. U.S. Treasury securities are categorized as Level 1 because they trade in a highly liquid and transparent market. Investments with maturities of three months or less when purchased, including certain short-term fixed income securities, are considered cash equivalents and are also categorized as Level 1. The fair values of fixed income securities, excluding U.S. Treasury securities, are based on evaluated prices that reflect observable market information, such as actual trade information or similar securities, adjusted for observable differences and are categorized in Level 2.
	-2	With respect to individually held equity securities, the trustee obtains prices from pricing services, whose prices are obtained from direct feeds from market exchanges. The fair values of equity securities held directly by the trust fund are based on quoted prices in active markets and are categorized in Level 1. Equity securities held individually are primarily traded on the New York Stock Exchange and NASDAQ Global Select Market, which contain only actively traded securities due to the volume trading requirements imposed by these national securities exchanges.
	-3	Direct lending securities are investments in managed funds that invest in private companies for long-term capital appreciation. The fair value of these securities is determined using either an enterprise value model or a bond valuation model. The enterprise value model develops valuation estimates based on valuations of comparable public companies, recent sales of private and public companies, discounting the forecasted cash flows of the portfolio company, estimating the liquidation or collateral value of the portfolio company or its assets, considering offers from third parties to buy the portfolio company, its historical and projected financial results, as well as other factors that may impact value. Significant judgment is required in the applications of discounts or premiums applied to the prices of comparable companies for factors such as size, marketability and relative performance. Under the bond valuation model, expected future cash flows are discounted using a discount rate. The discount rate is composed of a market based rate for similar credits in the public market and an internal credit rate based on the underlying risk of the credit. Investments in direct lending funds are categorized as Level 3 because the fair value of these securities is based largely on inputs that are unobservable and also utilize complex valuation models. Investments in direct lending securities typically cannot be redeemed until maturity of the term loan.
	Management determines the value of Level 3 investments by considering third party valuations and have concluded that quantitative information about significant unobservable inputs used in valuing these investments is not reasonably available. This includes information regarding the sensitivity of the fair values to changes in the unobservable inputs. We obtain annual valuations from the fund managers and gain an understanding of the inputs and assumptions used in preparing the valuations. We also conclude on the reasonableness of the fair value of these investments. We obtain quarterly reports from the fund managers and review for consistency and reasonableness with regards to the valuations of these investments that were analyzed at the most recent year-end.
	-4	Units of participation, which are similar to mutual funds, are maintained by investment companies and hold certain investments in accordance with stated fund objectives. The fair values of short-term commingled funds held within the trust funds, which generally hold short-term fixed income securities and are not subject to restrictions regarding the purchase or sale of shares, are derived from observable prices. Units of participation are categorized as Level 2 because the fair value of these securities is based primarily on observable prices of the underlying securities.
Schedule of the rollforward for Level 3 assets and liabilities measured at fair value on a recurring basis	'
	The following table presents the rollforward for Level 3 assets and liabilities measured at fair value on a recurring basis (in thousands):
	Direct Lending Securities	September 30,			December 31,
		2013			2012
	Beginning balance	$	102,443		$	61,998
	Purchases and issuances	48,268			82,285
	Sales, dispositions and settlements	(38,258		)	(39,706		)
	Realized gains and losses	2			(2,940		)
	Change in unrealized gains and losses	3,132			806
	Ending balance	$	115,587		$	102,443

Joint_Ventures_Tables

Joint Ventures (Tables)	9 Months Ended
	Sep. 30, 2012
Equity Method Investments and Joint Ventures [Abstract]	'
Schedule of financial information for unconsolidated joint ventures	'
	The table below presents unaudited financial information, for our unconsolidated joint ventures (in thousands):
		As of		As of
		September 30,		December 31,
		2013		2012
	Current assets	$	56,604	$	49,979
	Current liabilities	29,471		25,127
		For The Three Month				For The Nine Month
		Period Ended				Period Ended
		September 30,				September 30,
		2013		2012		2013		2012
	Revenue	$	46,239	$	54,798	$	104,986	$	125,751
	Gross profit	10,102		11,590		13,238		19,906
	Net income	9,914		11,439		12,602		19,543
	Net income (loss) attributable to EnergySolutions	3,800		4,286		4,378		7,422

Other_Intangible_Assets_Tables

Other Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2013
Intangible Assets, Net (Excluding Goodwill) [Abstract]	'
Schedule of other intangible assets	'
	Other intangible assets consisted of the following (in thousands):
		As of September 30, 2013						As of December 31, 2012
		Gross		Accumulated			Weighted	Gross		Accumulated			Weighted
		Carrying		Amortization			Average	Carrying		Amortization			Average
		Amount					Remaining	Amount					Remaining
							Useful Life						Useful Life
	Permits	$	243,116	$	(83,800	)	16.1 years	$	243,130	$	(76,406	)	16.9 years
	Customer relationships	159,988		(103,058		)	5.0 years	161,429		(93,552		)	5.6 years
	Technology and other	15,490		(11,802		)	2.3 years	15,490		(10,540		)	3.1 years
	Total amortizable intangibles	$	418,594	$	(198,660	)	12.9 years	$	420,049	$	(180,498	)	13.4 years

LongTerm_Debt_Tables

Long-Term Debt (Tables)	9 Months Ended
	Sep. 30, 2013
Debt Disclosure [Abstract]	'
Schedule of outstanding long-term debt	'
	Our outstanding long-term debt consists of the following (in thousands):
		September 30,			December 31,
		2013			2012
	Term loan facilities due through 2016(1)	$	454,407		$	527,000
	Term loan unamortized discount	(6,187		)	(8,741		)
	Senior notes, 10.75% due through 2018	300,000			300,000
	Senior notes unamortized discount	(2,778		)	(3,090		)
	Revolving credit facility	—			—
	Total debt	745,442			815,169
	Less: current portion	(79,407		)	(16,592		)
	Total long-term debt	$	666,035		$	798,577
	______________________________
	-1	The variable interest rate on borrowings under our senior secured credit facility was 6.75% as of September 30, 2013 and 6.25% as of December 31, 2012.
Schedule of debt instrument redemption prices	'
	Period	Redemption
		Price
	2014	105.375	%
	2015	102.688	%
	2016 and thereafter	100	%

Facility_and_Equipment_Deconta1

Facility and Equipment Decontamination and Decommissioning (Tables)	9 Months Ended
	Sep. 30, 2013
Asset Retirement Obligation Disclosure [Abstract]	'
Schedule of facility and equipment D&D liabilities	'
	Our facility and equipment D&D liabilities consist of the following (in thousands):
		September 30,			December 31,
		2013			2012
	Facilities and equipment ARO—Zion Station	$	445,693		$	553,302
	Facilities and equipment ARO—Clive, UT	29,851			29,300
	Facilities and equipment ARO—other	35,406			35,757
	Total facilities and equipment ARO	510,950			618,359
	Barnwell Closure	4,185			5,845
		515,135			624,204
	Less: current portion	(113,159		)	(138,757		)
		$	401,976		$	485,447
Rollforward of facilities and equipment ARO	'
	The following is a rollforward of our facilities and equipment ARO liabilities (in thousands):
		September 30,			December 31,
		2013			2012
	Beginning Balance as of January 1	$	618,359		$	750,649
	Liabilities incurred	256			187
	Liabilities settled	(127,400		)	(159,776		)
	Accretion expense	19,735			30,017
	ARO estimate adjustments	—			(2,718		)
	Ending liability	$	510,950		$	618,359
Schedule of the cash D&D deposits available exclusively to fund closure and post-closure obligations related to the entity's AROs	'
	The following table presents a summary of the D&D cash deposits available exclusively to fund closure and post-closure obligations related to our ARO liabilities (in thousands):
		September 30,			December 31,
		2013			2012
	Zion Station plant—restricted cash(1)(2)	$	200,000		$	200,000
	Clive, Utah facility—restricted cash(2)	76,487			85,606
	Tennessee facilities—escrow account(3)	5,569			13,363
	Barnwell, South Carolina facility—trust fund	4,185			5,845
	Others—restricted cash	637			662
	__________________________________
	-1	In connection with the execution of the Exelon Agreements, and in fulfillment of NRC regulations, we secured a $200.0 million letter of credit facility to further support the D&D activities at Zion Station. This letter of credit is cash-collateralized with proceeds obtained from our senior secured credit facility.
	-2	Letters of credit issued against our deposit restricted cash account are 101% cash collateralized pursuant to our senior secured credit facility.
	-3	To fund our obligation to clean and remediate our Tennessee facilities and equipment, we have also purchased insurance policies.

Segment_Reporting_and_Business1

Segment Reporting and Business Concentrations (Tables)	9 Months Ended
	Sep. 30, 2013
Segment Reporting [Abstract]	'
Schedule of segment information	'
	The following table presents our segment information (in thousands):
		As of and for the Three Month Period Ended September 30, 2013
		Government		Global Commercial Group								Corporate
												Unallocated
		Group		CS			LP&D		International			Items			Consolidated
	Revenue from external customers(1)(2)	$	43,458	$	38,961		$	53,104	$	256,951		$	—		$	392,474
	Income (loss) from operations(2)(3)	8,424		4,280			16,021		(2,920		)	(15,566		)	10,239
	Depreciation, amortization and accretion expense(4)	941		7,003			6,853		1,968			740			17,505
	Purchases of property, plant and equipment	4		215			2,874		578			69			3,740
		As of and for the Three Month Period Ended September 30, 2012
		Government		Global Commercial Group								Corporate
												Unallocated
		Group		CS			LP&D		International			Items			Consolidated
	Revenue from external customers(1)(2)	$	43,972	$	48,631		$	62,407	$	289,147		$	—		$	444,157
	Income (loss) from operations(2)(3)	10,422		1,702			18,956		5,411			(17,827		)	18,664
	Depreciation, amortization and accretion expense(4)	952		7,936			6,368		1,980			1,313			18,549
	Purchases of property, plant and equipment	—		(437		)	2,509		869			531			3,472
		As of and for the Nine Month Period Ended September 30, 2013
		Government		Global Commercial Group								Corporate
												Unallocated
		Group		CS			LP&D		International			Items			Consolidated
	Revenue from external customers(1)(2)	$	131,141	$	123,045		$	153,051	$	922,483		$	—		$	1,329,720
	Income (loss) from operations(2)(3)	15,808		10,335			40,906		20,056			(84,089		)	3,016
	Depreciation, amortization and accretion expense(4)	2,808		20,883			19,920		5,925			2,918			52,454
	Goodwill	73,594		90,129			89,548		55,180			—			308,451
	Other long-lived assets(5)	12,417		17,159			257,780		44,746			2,242			334,344
	Purchases of property, plant and equipment	47		375			8,784		95			858			10,159
	Total assets(6)	151,696		1,194,503			481,058		480,640			40,480			2,348,377
		As of and for the Nine Month Period ended September 30, 2012
		Government		Global Commercial Group								Corporate
												Unallocated
		Group		CS			LP&D		International			Items			Consolidated
	Revenue from external customers(1)(2)	$	124,744	$	129,110		$	155,768	$	917,848		$	—		$	1,327,470
	Income (loss) from operations(2)(3)	13,212		4,406			30,758		31,699			(58,574		)	21,501
	Depreciation, amortization and accretion expense(4)	3,397		23,551			19,150		5,801			4,702			56,601
	Goodwill	73,594		90,129			89,548		55,010			—			308,281
	Other long-lived assets(5)	15,913		18,369			267,466		52,980			10,464			365,192
	Purchases of property, plant and equipment	—		3,503			7,969		1,630			1,486			14,588
	Total assets(6)	171,117		1,524,906			557,954		540,375			58,525			2,852,877
	______________________
	-1	We eliminate intersegment revenue in consolidation. Intersegment revenue for the three month periods ended September 30, 2013, and 2012 was $4.2 million and $5.1 million, respectively. Intersegment revenue for the nine month periods ended September 30, 2013, and 2012 was $15.3 million and $18.4 million, respectively. Revenue by segment represent revenue earned based on third-party billings to customers.
	-2	Results of our operations for services provided to our customers in Canada, Asia and Europe are included in our International division.
	-3	For the three month period ended September 30, 2013, we recorded a $3.8 million of income from our unconsolidated joint ventures of which $0.4 million loss is attributable to our LP&D operations and $4.2 million of income is attributable to the Government Group. For the three month period ended September 30, 2012, we recorded $4.3 million of income from our unconsolidated joint ventures of which $0.1 million loss is attributable to LP&D operations and $4.4 million of income is attributable to the Government Group. For the nine month period ended September 30, 2013, we recorded a $4.4 million of income from our unconsolidated joint ventures of which $1.3 million loss is attributable to our LP&D operations and $5.7 million of income is attributable to the Government Group. For the nine month period ended September 30, 2012, we recorded $7.4 million of income from our unconsolidated joint ventures of which $0.1 million loss is attributable to LP&D operations and $7.5 million of income is attributable to the Government Group.
	-4	Depreciation, amortization and accretion expenses ("DA&A") are included in cost of revenue and SG&A expenses in the accompanying condensed consolidated statements of operations and comprehensive income (loss). DA&A expenses included in cost of revenue for the three month periods ended September 30, 2013, and 2012 were $12.2 million and $13.2 million, respectively. DA&A expenses included in cost of revenue for the nine month periods ended September 30, 2013, and 2012 were $36.6 million and $39.9 million, respectively. DA&A expenses included in SG&A for the three month periods ended September 30, 2013, and 2012 were $5.3 million and $5.6 million, respectively. DA&A expenses included in SG&A for the nine month periods ended September 30, 2013, and 2012 were $15.8 million and $16.7 million, respectively.
	-5	Other long-lived assets include property, plant and equipment and other intangible assets.
	-6	Corporate unallocated assets relate primarily to income tax receivables, deferred tax assets, deferred financing costs, prepaid expenses, and property, plant and equipment that benefit the entire Company and c

Pension_Plans_Tables

Pension Plans (Tables)	9 Months Ended
	Sep. 30, 2013
Compensation and Retirement Disclosure [Abstract]	'
Schedule of net periodic postretirement benefit costs	'
	Net periodic benefit costs related to the Magnox pension plan consisted of the following (in thousands):
		For The Three Month						For The Nine Month
		Period Ended						Period Ended
		September 30,						September 30,
		2013			2012			2013			2012
	Service cost	$	14,183		$	14,021		$	42,455		$	42,018
	Interest cost	38,634			39,692			115,650			118,952
	Expected return on plan assets	(45,183		)	(42,852		)	(135,253		)	(128,421		)
	Net actuarial loss	77			119			232			355
	Total net periodic benefit costs	$	7,711		$	10,980		$	23,084		$	32,904

Restructuring_Tables

Restructuring (Tables)	9 Months Ended
	Sep. 30, 2013
Restructuring and Related Activities [Abstract]	'
Schedule of reconciliation of the beginning and ending liability balances related to the Magnox employee termination benefits	'
	The following is a reconciliation of the beginning and ending liability balances related to the Magnox employee termination benefits (in thousands):
		September 30,			December 31,
		2013			2012
	Beginning liability	$	5,695		$	32,659
	Additions	55,555			—
	Payments	(10,937		)	(27,888		)
	Effect of exchange rate	1,670			924
	Ending liability	51,983			5,695
	Less current portion	(24,305		)	—
		$	27,678		$	5,695

Guarantor_and_NonGuarantor_Fin1

Guarantor and Non-Guarantor Financial Information (Tables)	9 Months Ended
	Sep. 30, 2013
Guarantor and Non-Guarantor Financial Information	'
Schedule of Condensed Consolidating Statement of Operations	'
	ing.
	CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS
	For The Three Month Period ended September 30, 2013
	(in thousands)
		Energy			Energy			Guarantor			Non-			Eliminations			Consolidated
		Solutions,			Solutions,			Subsidiaries			Guarantor
		Inc.			LLC						Subsidiaries
	Revenue	$	—		$	21,709		$	89,206		$	293,904		$	(12,345	)	$	392,474
	Cost of revenue	—			(7,540		)	(69,509		)	(291,285		)	12,345			(355,989		)
	Gross profit	—			14,169			19,697			2,619			—			36,485
	Selling, general and administrative expenses	—			(12,867		)	(12,153		)	(5,026		)	—			(30,046		)
	Equity in income of unconsolidated joint ventures	—			—			3,800			—			—			3,800
	Operating income (loss)	—			1,302			11,344			(2,407		)	—			10,239
	Interest expense	—			(16,546		)	—			(3,932		)	—			(20,478		)
	Income (loss) from subsidiaries	(7,653		)	7,666			—			—			(13		)	—
	Other, net	—			(75		)	(12		)	2,360			—			2,273
	Income (loss) before income taxes	(7,653		)	(7,653		)	11,332			(3,979		)	(13		)	(7,966		)
	Provision for income taxes	2,798			—			—			312			—			3,110
	Net income (loss)	(4,855		)	(7,653		)	11,332			(3,667		)	(13		)	(4,856		)
	Less: net loss attributable to noncontrolling interests	—			—			—			1			—			1
	Net income (loss) attributable to EnergySolutions	$	(4,855	)	$	(7,653	)	$	11,332		$	(3,666	)	$	(13	)	$	(4,855	)
	Other comprehensive income (loss):
	Net income (loss)	(4,855		)	(7,653		)	11,332			(3,667		)	(13		)	(4,856		)
	Foreign currency translation adjustments, net of taxes	—			—			—			9,302			—			9,302
	Change in unrecognized actuarial loss	—			—			—			462			—			462
	Other comprehensive income (loss)	(4,855		)	(7,653		)	11,332			6,097			(13		)	4,908
	Less: net loss attributable to noncontrolling interests	—			—			—			1			—			1
	Comprehensive income (loss) attributable to EnergySolutions	$	(4,855	)	$	(7,653	)	$	11,332		$	6,098		$	(13	)	$	4,909
	CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS
	For The Nine Month Period ended September 30, 2013
	(in thousands)
		Energy			Energy			Guarantor			Non-			Eliminations			Consolidated
		Solutions,			Solutions,			Subsidiaries			Guarantor
		Inc.			LLC						Subsidiaries
	Revenue	$	—		$	50,364		$	280,609		$	1,039,953		$	(41,206	)	$	1,329,720
	Cost of revenue	—			(18,739		)	(226,409		)	(995,476		)	41,206			(1,199,418		)
	Gross profit	—			31,625			54,200			44,477			—			130,302
	Selling, general and administrative expenses	—			(79,842		)	(35,843		)	(15,979		)	—			(131,664		)
	Equity in income of unconsolidated joint ventures	—			—			4,378			—			—			4,378
	Operating income (loss)	—			(48,217		)	22,735			28,498			—			3,016
	Interest expense	—			(46,895		)	—			(11,026		)	—			(57,921		)
	Income (loss) from subsidiaries	(70,117		)	31,559			—			—			38,558			—
	Other, net	—			(6,564		)	154			(2,816		)	—			(9,226		)
	Income (loss) before income taxes	(70,117		)	(70,117		)	22,889			14,656			38,558			(64,131		)
	Provision for income taxes	(168		)	—			—			(5,987		)	—			(6,155		)
	Net income (loss)	(70,285		)	(70,117		)	22,889			8,669			38,558			(70,286		)
	Less: net income attributable to noncontrolling interests	—			—			—			1			—			1
	Net income (loss) attributable to EnergySolutions	$	(70,285	)	$	(70,117	)	$	22,889		$	8,670		$	38,558		$	(70,285	)
	Other comprehensive income (loss):
	Net income (loss)	(70,285		)	(70,117		)	22,889			8,669			38,558			(70,286		)
	Foreign currency translation adjustments, net of taxes	—			—			—			349			—			349
	Change in unrecognized actuarial loss	—			—			—			(13		)	—			(13		)
	Other comprehensive income (loss)	(70,285		)	(70,117		)	22,889			9,005			38,558			(69,950		)
	Less: net income attributable to noncontrolling interests	—			—			—			1			—			1
	Comprehensive income (loss) attributable to EnergySolutions	$	(70,285	)	$	(70,117	)	$	22,889		$	9,006		$	38,558		$	(69,949	)
	CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS
	For The Three Month Period ended September 30, 2012
	(in thousands)
		Energy			Energy			Guarantor			Non-			Eliminations			Consolidated
		Solutions,			Solutions,			Subsidiaries			Guarantor
		Inc.			LLC						Subsidiaries
	Revenue	$	—		$	23,760		$	161,114		$	297,738		$	(38,455	)	$	444,157
	Cost of revenue	—			(10,110		)	(137,284		)	(289,061		)	38,455			(398,000		)
Gross profit	—			13,650			23,830			8,677			—			46,157
Selling, general and administrative expenses	—			(21,012		)	(5,471		)	(5,296		)	—			(31,779		)
Equity in income of unconsolidated joint ventures	—			—			4,286			—			—			4,286
Operating income (loss)	—			(7,362		)	22,645			3,381			—			18,664
Interest expense	—			(14,355		)	—			(3,281		)	—			(17,636		)
Income (loss) from subsidiaries	20,298			46,894			—			—			(67,192		)	—
Other, net	—			(4,879		)	(2,426		)	19,673			—			12,368
Income (loss) before income taxes	20,298			20,298			20,219			19,773			(67,192		)	13,396
Benefit from (provision for) income taxes	(10,246		)	—			—			6,899			—			(3,347		)
Net income (loss)	10,052			20,298			20,219			26,672			(67,192		)	10,049
Less: net income attributable to noncontrolling interests	—			—			—			3			—			3
Net income (loss) attributable to EnergySolutions	$	10,052		$	20,298		$	20,219		$	26,675		$	(67,192	)	$	10,052
Other comprehensive income (loss):
Net income (loss)	10,052			20,298			20,219			26,672			(67,192		)	10,049
Foreign currency translation adjustments, net of taxes	—			5,443			—			5,443			(5,443		)	5,443
Change in unrecognized actuarial gain	—			273			—			273			(273		)	273
Other comprehensive income (loss)	10,052			26,014			20,219			32,388			(72,908		)	15,765
Less: net income attributable to noncontrolling interests	—			—			—			3			—			3
Comprehensive income (loss) attributable to EnergySolutions	$	10,052		$	26,014		$	20,219		$	32,391		$	(72,908	)	$	15,768
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS
For The Nine Month Period ended September 30, 2012
(in thousands)
	Energy			Energy			Guarantor			Non-			Eliminations			Consolidated
	Solutions,			Solutions,			Subsidiaries			Guarantor
	Inc.			LLC						Subsidiaries
Revenue	$	—		$	48,555		$	348,592		$	987,946		$	(57,623	)	$	1,327,470
Cost of revenue	—			(27,738		)	(297,795		)	(945,820		)	57,623			(1,213,730		)
Gross profit	—			20,817			50,797			42,126			—			113,740
Selling, general and administrative expenses	—			(66,150		)	(18,640		)	(14,871		)	—			(99,661		)
Equity in income of unconsolidated joint ventures	—			—			7,422			—			—			7,422
Operating income (loss)	—			(45,333		)	39,579			27,255			—			21,501
Interest expense	—			(42,841		)	—			(9,981		)	—			(52,822		)
Income (loss) from subsidiaries	15,275			108,154			—			—			(123,429		)	—
Other, net	—			(4,705		)	(1,182		)	51,980			—			46,093
Income (loss) before income taxes	15,275			15,275			38,397			69,254			(123,429		)	14,772
Benefit from (provision for) income taxes	(448		)	—			—			468			—			20
Net income (loss)	14,827			15,275			38,397			69,722			(123,429		)	14,792
Less: net income attributable to noncontrolling interests	—			—			—			35			—			35
Net income (loss) attributable to EnergySolutions	$	14,827		$	15,275		$	38,397		$	69,757		$	(123,429	)	$	14,827
Other comprehensive income (loss):
Net income (loss)	14,827			15,275			38,397			69,722			(123,429		)	14,792
Foreign currency translation adjustments, net of taxes	—			6,821			—			6,821			(6,821		)	6,821
Change in unrecognized actuarial gain	—			242			—			242			(242		)	242
Other comprehensive income (loss)	14,827			22,338			38,397			76,785			(130,492		)	21,855
Less: net income attributable to noncontrolling interests	—			—			—			35			—			35
Comprehensive income (loss) attributable to EnergySolutions	$	14,827		$	22,338		$	38,397		$	76,820		$	(130,492	)	$	21,890
Schedule of Condensed Consolidating Balance Sheet	'
	CONDENSED CONSOLIDATING BALANCE SHEET
	As of September 30, 2013
	(in thousands)
		Energy			Energy			Guarantor			Non-			Eliminations			Consolidated
		Solutions,			Solutions,			Subsidiaries			Guarantor
		Inc.			LLC						Subsidiaries
	Assets
	Total current assets	$	4,735		$	36,449		$	91,135		$	515,563		$	(2,695	)	$	645,187
	Property, plant and equipment, net	—			53,900			58,308			2,202			—			114,410
	Goodwill	—			29,765			223,506			55,180			—			308,451
	Intangibles, net	—			157,345			20,046			42,543			—			219,934
	Restricted cash	—			89,460			4,185			200,398			—			294,043
	Nuclear decommissioning trust fund	—			—			—			348,159			—			348,159
	Long-term deferred costs less current portion	—			—			—			288,884			—			288,884
	Investment in subsidiaries	(79,335		)	647,701			—			—			(568,366		)	—
	Intercompany receivable	313,214			—			145,755			7,497			(466,466		)	—
	Other long term assets	—			11,530			19,756			98,023			—			129,309
	TOTAL ASSETS	$	238,614		$	1,026,150		$	562,691		$	1,558,449		$	(1,037,527	)	$	2,348,377
	Liabilities and Equity
	Intercompany loan payable	$	—		$	460,578		$	—		$	—		$	(460,578	)	$	—
	Intercompany payable	—						2,694			5,888			(8,582		)	—
	Total current liabilities	—			141,259			52,796			452,561						646,616
	Long-term debt, less current portion	—			468,688			—			197,347			—			666,035
	Facility and equipment decontamination and decommissioning liabilities, current portion	—			31,708			37,716			332,552			—			401,976
	Unearned revenue, less current portion	—			0			—			291,912			—			291,912
	Other liabilities, net	—			3,252			1,060			98,413			—			102,725
	Equity	238,614			(79,335		)	468,425			179,277			(568,367		)	238,614
	Noncontrolling interests	—			—			—			499			—			499
	TOTAL LIABILITIES AND EQUITY	$	238,614		$	1,026,150		$	562,691		$	1,558,449		$	(1,037,527	)	$	2,348,377
	CONDENSED CONSOLIDATING BALANCE SHEET
	As of December 31, 2012
	(in thousands)
		Energy			Energy			Guarantor			Non-			Eliminations			Consolidated
		Solutions,			Solutions,			Subsidiaries			Guarantor
		Inc.			LLC						Subsidiaries
	Assets
	Total current assets	$	6,423		$	128,479		$	115,603		$	545,483		$	(1,453	)	$	794,535
	Property, plant and equipment, net	—			60,657			54,112			2,975			—			117,744
	Goodwill	—			29,765			223,506			55,337			—			308,608
	Intangibles, net	—			160,198			31,186			48,167			—			239,551
	Restricted cash	—			110,471			5,867			200,416			—			316,754
	Nuclear decommissioning trust fund	—			—			—			445,989			—			445,989
	Long-term deferred costs less current portion	—			—			—			360,185			—			360,185
	Investment in subsidiaries	(9,554		)	616,038			—			—			(606,484		)	—
	Intercompany receivable	303,550			—			108,032			1,302			(412,884		)	—
	Other long term assets	—			10,884			16,450			44,762			—			72,096
	TOTAL ASSETS	$	300,419		$	1,116,492		$	554,756		$	1,704,616		$	(1,020,821	)	$	2,655,462
	Liabilities and Stockholders’ Equity
	Intercompany loan payable	$	—		$	401,015		$	—		$	—		$	(401,015	)	$	—
	Intercompany payable	—			—			1,441			11,869			(13,310		)	—
	Total current liabilities	—			88,815			67,198			488,779			(12		)	644,780
	Long-term debt, less current portion	—			601,836			—			196,741			—			798,577
	Facility and equipment decontamination and decommissioning liabilities, current portion	—			31,206			39,358			414,883			—			485,447
	Unearned revenue, less current portion	—			0			—			366,710			—			366,710
	Other liabilities, net	—			3,174			1,051			54,804			—			59,029
	Stockholders’ equity	300,419			(9,554		)	445,708			170,330			(606,484		)	300,419
	Noncontrolling interests	—			—			—			500			—			500
	TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$	300,419		$	1,116,492		$	554,756		$	1,704,616		$	(1,020,821	)	$	2,655,462
Schedule of Condensed Cash Flow Statement	'
	CONDENSED CONSOLIDATING STATEMENT OF CASH FLOW
	For The Nine Month Period ended September 30, 2013
	(in thousands)
		Energy			Energy			Guarantor			Non-			Eliminations			Consolidated
		Solutions,			Solutions,			Subsidiaries			Guarantor
		Inc.			LLC						Subsidiaries
	Cash flow from operating activities
	Net cash provided by (used in) operating activities	$	(63,214	)	$	(41,433	)	$	50,806		$	(1,195	)	$	44,118		$	(10,918	)
	Cash flow from investing activities
	Purchases of property, plant and equipment	—			(1,345		)	(8,684		)	(130		)	—			(10,159		)
	Purchase of investments in nuclear decommissioning trust fund	—			—			—			(673,864		)	—			(673,864		)
	Proceeds from sales of nuclear decommissioning trust fund investments	—			—			—			677,488			—			677,488
	Net cash provided by (used in) investing activities	—			(1,345		)	(8,684		)	3,494			—			(6,535		)
	Cash flows from financing activities
	Intercompany loan receivable	1,207			—			(43,917		)	—			42,710			—
	Intercompany loan payable				50,224			(1,514		)	—			(48,710		)	—
	Investment in subsidiary	69,781			(31,663		)	—			—			(38,118		)	—
	Repayments of long term debt	—			(72,593		)	—			—			—			(72,593		)
	Restricted cash held as collateral of letter of credit obligations	—			21,000			—			—			—			21,000
	Debt financing fees	—			(1,960		)	—			(1,200		)	—			(3,160		)
	Minimum tax withholding on restricted stock awards	(432		)	—			—			—			—			(432		)
	Repurchase of common stock	(7,342		)	—			—			—			—			(7,342		)
	Repayments of capital lease obligations	—			(573		)	—			—			—			(573		)
	Net cash provided by (used in) financing activities	63,214			(35,565		)	(45,431		)	(1,200		)	(44,118		)	(63,100		)
	Effect of exchange rate on cash	—			—			—			520			—			520
	Net increase (decrease) in cash and cash equivalents	—			(78,343		)	(3,309		)	1,619			—			(80,033		)
	Cash and cash equivalents, beginning of period	—			93,080			3,371			37,740			—			134,191
	Cash and cash equivalents, end of period	$	—		$	14,737		$	62		$	39,359		$	—		$	54,158
	CONDENSED CONSOLIDATING STATEMENT OF CASH FLOW
	For The Nine Month Period ended September 30, 2012
	(in thousands)
		Energy			Energy			Guarantor			Non-			Eliminations			Consolidated
		Solutions,			Solutions,			Subsidiaries			Guarantor
		Inc.			LLC						Subsidiaries
	Cash flow from operating activities
	Net cash provided by (used in) operating activities	$	14,223		$	121,545		$	51,259		$	(18,679	)	$	(152,582	)	$	15,766
	Cash flow from investing activities
	Purchase of investments in nuclear decommissioning trust fund	—			—			—			(651,933		)	—			(651,933		)
	Proceeds from sales of nuclear decommissioning trust fund investments	—			—			—			654,798			—			654,798
	Purchases of property, plant and equipment	—			(7,305		)	(5,635		)	(1,648		)	—			(14,588		)
	Purchases of intangible assets	—			(763		)	—			—			—			(763		)
	Proceeds from disposition of property, plant and equipment	—			—			5,317			—			—			5,317
	Net cash provided by (used in) investing activities	—			(8,068		)	(318		)	1,217			—			(7,169		)
	Cash flows from financing activities
	Intercompany loan receivable	6,740			31,078			(46,884		)	—			9,066			—
	Intercompany loan payable	—			(6,740		)	—			—			6,740			—
	Investment in subsidiary	(22,340		)	(82,874		)	—			(31,562		)	136,776			—
	Dividend: minority interest	—			—			—			(158		)	—			(158		)
	Proceeds from issuance of common stock	1,497			—			—			—			—			1,497
	Minimum tax withholding on restricted stock awards	(120		)	—			—			—			—			(120		)
	Repayments of capital lease obligations	—			—			(629		)	—			—			(629		)
	Net cash provided by (used in) financing activities	(14,223		)	(58,536		)	(47,513		)	(31,720		)	152,582			590
	Effect of exchange rate on cash	—			—			—			1,513			—			1,513
	Net increase (decrease) in cash and cash equivalents	—			54,941			3,428			(47,669		)	—			10,700
	Cash and cash equivalents, beginning of period	—			694			—			76,519			—			77,213
	Cash and cash equivalents, end of period	$	—		$	55,635		$	3,428		$	28,850		$	—		$	87,913

Description_of_Business_Detail

Description of Business (Details)	9 Months Ended
	Sep. 30, 2013
	group
Description of Business	'
Number of major operating groups	2
Clive, UT	'
Description of Business	'
Number of facilities	1
Tennessee	'
Description of Business	'
Number of facilities	4
Barnwell, South Carolina	'
Description of Business	'
Number of facilities	2
UK | Magnox	'
Description of Business	'
Number of facilities	10
Number of nuclear reactors	22
Global Commercial Group	'
Description of Business	'
Number of major business divisions	3

Business_Combinations_Details

Business Combinations (Details) (USD $)

Sep. 30, 2013

24-May-13

Dec. 31, 2012

Sep. 30, 2013

24-May-13

24-May-13

24-May-13

24-May-13

24-May-13

24-May-13

24-May-13

24-May-13

In Millions, except Share data, unless otherwise specified

Senior notes due 2018

Energy Solutions Inc.

Energy Solutions Inc.

Energy Solutions Inc.

Energy Solutions Inc.

Energy Capital Partners II, LP

Rockwell Holdco, Inc

Rockwell Holdco, Inc

Rockwell Holdco, Inc

Common Stock

Employee incentives and related payroll taxes

Professional and consulting fees

Energy Solutions Inc.

Energy Solutions Inc.

Energy Solutions Inc.

Amount paid on behalf of acquiree

Amount capitalized as debt issuance cost

Business Acquisition [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Ownership interest of parent company by another entity

'

'

'

'

'

'

'

'

100.00%

'

'

'

Conversion price of shares (in dollars per share)

'

'

'

'

'

'

'

'

'

$4.15

'

'

Interest rate on senior notes

'

'

'

10.75%

'

'

'

'

'

'

'

'

Common stock, shares authorized

100

1,000,000,000

1,000,000,000

'

'

'

'

'

'

'

'

'

Preferred stock, shares authorized

0

100,000,000

'

'

'

'

'

'

'

'

'

'

Acquisition purchase price

'

'

'

'

$383.90

'

'

'

'

'

'

'

Stock repurchased during period (in shares)

'

'

'

'

'

1,800,000

'

'

'

'

'

'

Stock repurchased during period

'

'

'

'

'

7.3

'

'

'

'

'

'

Merger transaction related costs paid

'

'

'

'

'

'

'

'

'

'

10.9

3.1

Merger transaction related costs expensed

'

'

'

'

$32.60

'

$21

$11.60

'

'

'

'

Basis_of_Presentation_Details

Basis of Presentation (Details)	9 Months Ended
	Sep. 30, 2013
	venture
Basis of Presentation	'
Number of minority-owned joint ventures consolidated	1

Trust_Fund_Investments_Details

Trust Fund Investments (Details) (USD $)	3 Months Ended				9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012		Dec. 31, 2012
Investments	'		'		'		'		'
Total assets	$2,348,377,000	[1]	$2,852,877,000	[1]	$2,348,377,000	[1]	$2,852,877,000	[1]	$2,655,462,000
Total liabilities, amortized cost	-2,109,264,000		'		-2,109,264,000		'		-2,354,543,000
Less: current portion	-122,959,000		'		-122,959,000		'		-152,507,000
Nuclear decommissioning trust fund investments	348,159,000		'		348,159,000		'		445,989,000
Additional disclosures	'		'		'		'		'
Nuclear decommissioning trust fund	'		'		124,730,000		127,222,000		'
NDT fund	'		'		'		'		'
Assets	'		'		'		'		'
Receivables for securities sold	16,995,000		'		16,995,000		'		7,422,000
Investments	'		'		'		'		'
Investments, amortized cost	447,839,000		'		447,839,000		'		557,851,000
Investments, gross unrealized gains	19,151,000		'		19,151,000		'		36,460,000
Investments, gross unrealized losses	-12,442,000		'		-12,442,000		'		-3,237,000
Investments, estimated fair value	454,548,000		'		454,548,000		'		591,074,000
Total assets	464,834,000		'		464,834,000		'		565,273,000
Assets, gross unrealized gains	19,151,000		'		19,151,000		'		36,460,000
Assets, gross unrealized losses	-12,442,000		'		-12,442,000		'		-3,237,000
Total assets, estimated fair value	471,543,000		'		471,543,000		'		598,496,000
Payables to Broker-Dealers and Clearing Organizations	-425,000		'		-425,000		'		'
Total liabilities, amortized cost	-425,000		'		-425,000		'		'
Total liabilities, estimated fair value	-425,000		'		-425,000		'		'
Net assets held by the NDT fund, amortized cost	464,409,000		'		464,409,000		'		565,273,000
Net assets held by the NDT fund, gross unrealized gains	19,151,000		'		19,151,000		'		36,460,000
Net assets held by the NDT fund, gross unrealized losses	-12,442,000		'		-12,442,000		'		-3,237,000
Net assets held by the NDT fund	471,118,000		'		471,118,000		'		598,496,000
Less: current portion	-122,959,000		'		-122,959,000		'		-152,507,000
Nuclear decommissioning trust fund investments	348,159,000		'		348,159,000		'		445,989,000
Additional disclosures	'		'		'		'		'
Nuclear decommissioning trust fund	'		'		124,700,000		127,200,000		'
Payments for Brokerage Fees	'		'		3,600,000		2,900,000		'
Unrealized (losses) gains resulting from adjustments to the fair value of the NDT fund investments	-600,000		12,100,000		-26,500,000		19,000,000		'
Realized gains related to sales of investments, dividends and interest payments received from investments held by the NDT fund	4,400,000		8,200,000		27,400,000		36,000,000		'
NDT fund | Corporate debt securities	'		'		'		'		'
Investments	'		'		'		'		'
Investments, amortized cost	213,120,000		'		213,120,000		'		223,662,000
Investments, gross unrealized gains	8,246,000		'		8,246,000		'		17,940,000
Investments, gross unrealized losses	-3,379,000		'		-3,379,000		'		-575,000
Investments, estimated fair value	217,987,000		'		217,987,000		'		241,027,000
NDT fund | Equity securities	'		'		'		'		'
Investments	'		'		'		'		'
Investments, amortized cost	400,000		'		400,000		'		10,117,000
Investments, gross unrealized gains	4,000		'		4,000		'		4,249,000
Investments, gross unrealized losses	0		'		0		'		-61,000
Investments, estimated fair value	404,000		'		404,000		'		14,305,000
NDT fund | Direct lending securities	'		'		'		'		'
Investments	'		'		'		'		'
Investments, amortized cost	109,813,000		'		109,813,000		'		98,138,000
Investments, gross unrealized gains	9,923,000		'		9,923,000		'		6,026,000
Investments, gross unrealized losses	-4,149,000		'		-4,149,000		'		-1,721,000
Investments, estimated fair value	115,587,000		'		115,587,000		'		102,443,000
NDT fund | Debt securities issued by states of the U.S.	'		'		'		'		'
Investments	'		'		'		'		'
Investments, amortized cost	23,730,000		'		23,730,000		'		31,306,000
Investments, gross unrealized gains	869,000		'		869,000		'		3,806,000
Investments, gross unrealized losses	-414,000		'		-414,000		'		'
Investments, estimated fair value	24,185,000		'		24,185,000		'		35,112,000
NDT fund | Cash and cash equivalents	'		'		'		'		'
Investments	'		'		'		'		'
Investments, amortized cost	21,931,000		'		21,931,000		'		23,686,000
Investments, estimated fair value	21,931,000		'		21,931,000		'		23,686,000
NDT fund | Commingled funds	'		'		'		'		'
Investments	'		'		'		'		'
Investments, amortized cost	'		'		'		'		4,017,000
Investments, gross unrealized gains	'		'		'		'		527,000
Investments, estimated fair value	'		'		'		'		4,544,000
NDT fund | Debt securities issued by the U.S. Treasury and other U.S. government corporations and agencies	'		'		'		'		'
Investments	'		'		'		'		'
Investments, amortized cost	78,845,000		'		78,845,000		'		166,925,000
Investments, gross unrealized gains	109,000		'		109,000		'		3,912,000
Investments, gross unrealized losses	-4,500,000		'		-4,500,000		'		-880,000
Investments, estimated fair value	74,454,000		'		74,454,000		'		169,957,000
NDT fund | Estimated fair value	'		'		'		'		'
Assets	'		'		'		'		'
Receivables for securities sold	16,995,000		'		16,995,000		'		7,422,000
Investments	'		'		'		'		'
Payables to Broker-Dealers and Clearing Organizations	($425,000)		'		($425,000)		'		'
[1]	Corporate unallocated assets relate primarily to income tax receivables, deferred tax assets, deferred financing costs, prepaid expenses, and property, plant and equipment that benefit the entire Company and cash

Fair_Value_Measurements_Detail

Fair Value Measurements (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Fair market value | Revolving credit facility	'	'
Fair market value and carrying value	'	'
Debt	$460.70	$508.60
Fair market value | Senior notes	'	'
Fair market value and carrying value	'	'
Debt	318.8	283.5
Carrying value | Revolving credit facility	'	'
Fair market value and carrying value	'	'
Debt	454.4	527
Carrying value | Senior notes	'	'
Fair market value and carrying value	'	'
Debt	$300	$300

Fair_Value_Measurements_Detail1

Fair Value Measurements (Details 2) (NDT fund, USD $)	Sep. 30, 2013		Dec. 31, 2012
In Thousands, unless otherwise specified
Assets	'		'
Receivables for securities sold	$16,995		$7,422
Payables to Broker-Dealers and Clearing Organizations	-425		'
Total liabilities, estimated fair value	425		'
Total assets, estimated fair value	471,543		598,496
Net assets held by the NDT fund	471,118		598,496
Total Investments at Fair Value	'		'
Assets	'		'
Receivables for securities sold	16,995		7,422
Investments	454,548		591,074
Payables to Broker-Dealers and Clearing Organizations	-425		'
Total liabilities, estimated fair value	425		'
Total assets, estimated fair value	471,543		598,496
Net assets held by the NDT fund	471,118		598,496
Total Investments at Fair Value | Cash and cash equivalents	'		'
Assets	'		'
Investments	21,931		23,686
Total Investments at Fair Value | Fixed income securities	'		'
Assets	'		'
Investments	316,626	[1]	446,096	[1]
Total Investments at Fair Value | Equity securities	'		'
Assets	'		'
Investments	404	[2]	14,305	[2]
Total Investments at Fair Value | Direct lending securities	'		'
Assets	'		'
Investments	115,587	[3]	102,443	[3]
Total Investments at Fair Value | Unit of participation	'		'
Assets	'		'
Investments	'		4,544	[4]
Quoted Prices in Active Markets for Identical Assets Level 1	'		'
Assets	'		'
Receivables for securities sold	16,995		7,422
Investments	96,788		163,596
Payables to Broker-Dealers and Clearing Organizations	-425		'
Total liabilities, estimated fair value	425		'
Total assets, estimated fair value	113,783		171,018
Net assets held by the NDT fund	113,358		171,018
Quoted Prices in Active Markets for Identical Assets Level 1 | Cash and cash equivalents	'		'
Assets	'		'
Investments	21,931		23,686
Quoted Prices in Active Markets for Identical Assets Level 1 | Fixed income securities	'		'
Assets	'		'
Investments	74,453	[1]	125,605	[1]
Quoted Prices in Active Markets for Identical Assets Level 1 | Equity securities	'		'
Assets	'		'
Investments	404	[2]	14,305	[2]
Significant Other Observable Inputs Level 2	'		'
Assets	'		'
Investments	242,173		325,035
Total assets, estimated fair value	242,173		325,035
Net assets held by the NDT fund	242,173		325,035
Significant Other Observable Inputs Level 2 | Fixed income securities	'		'
Assets	'		'
Investments	242,173	[1]	320,491	[1]
Significant Other Observable Inputs Level 2 | Unit of participation	'		'
Assets	'		'
Investments	'		4,544	[4]
Significant Unobservable Inputs Level 3	'		'
Assets	'		'
Investments	115,587		102,443
Total assets, estimated fair value	115,587		102,443
Net assets held by the NDT fund	115,587		102,443
Significant Unobservable Inputs Level 3 | Direct lending securities	'		'
Assets	'		'
Investments	$115,587	[3]	$102,443	[3]
[1]	For fixed income securities, multiple prices from pricing services are obtained from pricing vendors whenever possible, which enables cross- provider validations in addition to checks for unusual daily movements. A primary price source is identified based on asset type, class or issue for each security. The trustee monitors prices supplied by pricing services and may use a supplemental price source or change the primary price source of a given security if the portfolio managers challenge an assigned price and the trustee determines that another price source is considered to be preferable. U.S. Treasury securities are categorized as Level 1 because they trade in a highly liquid and transparent market. Investments with maturities of three months or less when purchased, including certain short-term fixed income securities, are considered cash equivalents and are also categorized as Level 1. The fair values of fixed income securities, excluding U.S. Treasury securities, are based on evaluated prices that reflect observable market information, such as actual trade information or similar securities, adjusted for observable differences and are categorized in Level 2.
[2]	With respect to individually held equity securities, the trustee obtains prices from pricing services, whose prices are obtained from direct feeds from market exchanges. The fair values of equity securities held directly by the trust fund are based on quoted prices in active markets and are categorized in Level 1. Equity securities held individually are primarily traded on the New York Stock Exchange and NASDAQ Global Select Market, which contain only actively traded securities due to the volume trading requirements imposed by these national securities exchanges.
[3]	Direct lending securities are investments in managed funds that invest in private companies for long-term capital appreciation. The fair value of these securities is determined using either an enterprise value model or a bond valuation model. The enterprise value model develops valuation estimates based on valuations of comparable public companies, recent sales of private and public companies, discounting the forecasted cash flows of the portfolio company, estimating the liquidation or collateral value of the portfolio company or its assets, considering offers from third parties to buy the portfolio company, its historical and projected financial results, as well as other factors that may impact value. Significant judgment is required in the applications of discounts or premiums applied to the prices of comparable companies for factors such as size, marketability and relative performance. Under the bond valuation model, expected future cash flows are discounted using a discount rate. The discount rate is composed of a market based rate for similar credits in the public market and an internal credit rate based on the underlying risk of the credit. Investments in direct lending funds are categorized as Level 3 because the fair value of these securities is based largely on inputs that are unobservable and also utilize complex valuation models. Investments in direct lending securities typically cannot be redeemed until maturity of the term loan.Management determines the value of Level 3 investments by considering third party valuations and have concluded that quantitative information about significant unobservable inputs used in valuing these investments is not reasonably available. This includes information regarding the sensitivity of the fair values to changes in the unobservable inputs. We obtain annual valuations from the fund managers and gain an understanding of the inputs and assumptions used in preparing the valuations. We also conclude on the reasonableness of the fair value of these investments. We obtain quarterly reports from the fund managers and review for consistency and reasonableness with regards to the valuations of these investments that were analyzed at the most recent year-end.
[4]	Units of participation, which are similar to mutual funds, are maintained by investment companies and hold certain investments in accordance with stated fund objectives. The fair values of short-term commingled funds held within the trust funds, which generally hold short-term fixed income securities and are not subject to restrictions regarding the purchase or sale of shares, are derived from observable prices. Units of participation are categorized as Level 2 because the fair value of these securities is based primarily on observable prices of the underlying securities

Fair_Value_Measurements_Detail2

Fair Value Measurements (Details 3) (Direct lending securities, NDT fund, USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Direct lending securities | NDT fund	'	'
Rollforward for Level 3 assets and liabilities measured at fair value on a recurring basis	'	'
Beginning balance	$102,443	$61,998
Purchases and issuances	48,268	82,285
Sales, dispositions and settlements	-38,258	-39,706
Realized gains and losses	2	-2,940
Change in unrealized gains and losses	3,132	806
Ending balance	$115,587	$102,443

Joint_Ventures_Details

Joint Ventures (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Equity Method Investments and Joint Ventures [Abstract]	'	'	'	'	'
Number of groups into which joint ventures are classified	'	'	2	'	'
Joint Ventures	'	'	'	'	'
Net income (loss) attributable to EnergySolutions	$3,800,000	$4,286,000	$4,378,000	$7,422,000	'
Unconsolidated joint ventures	'	'	'	'	'
Joint Ventures	'	'	'	'	'
Current assets	56,604,000	'	56,604,000	'	49,979,000
Current liabilities	29,471,000	'	29,471,000	'	25,127,000
Revenue	46,239,000	54,798,000	104,986,000	125,751,000	'
Gross profit	10,102,000	11,590,000	13,238,000	19,906,000	'
Net income	9,914,000	11,439,000	12,602,000	19,543,000	'
Net income (loss) attributable to EnergySolutions	3,800,000	4,286,000	4,378,000	7,422,000	'
Proceeds in cash dividend distributions from unconsolidated joint ventures	'	'	$1,100,000	$3,400,000	'

Goodwill_Details

Goodwill (Details) (USD $)	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Goodwill and Intangible Assets Disclosure [Abstract]	'	'	'
Goodwill	$308,451,000	$308,281,000	$308,608,000
Gain (losses) recorded on translation related to goodwill denominated in foreign currencies	$200,000	$2,200,000	'

Other_Intangible_Assets_Detail

Other Intangible Assets (Details) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Other Intangible Assets	'	'	'	'	'
Gross Carrying Amount	$418,594,000	'	$418,594,000	'	$420,049,000
Accumulated Amortization	-198,660,000	'	-198,660,000	'	-180,498,000
Weighted Average Remaining Useful Life	'	'	'12 years 9 months 60 days	'	'13 years 4 months 24 days
Translation gain (loss) related to intangible assets denominated in foreign currency	'	'	300,000	3,800,000	'
Amortization expense	6,400,000	6,500,000	19,300,000	19,400,000	'
Permits	'	'	'	'	'
Other Intangible Assets	'	'	'	'	'
Gross Carrying Amount	243,116,000	'	243,116,000	'	243,130,000
Accumulated Amortization	-83,800,000	'	-83,800,000	'	-76,406,000
Weighted Average Remaining Useful Life	'	'	'16 years 1 month 18 days	'	'16 years 10 months 24 days
Customer relationships	'	'	'	'	'
Other Intangible Assets	'	'	'	'	'
Gross Carrying Amount	159,988,000	'	159,988,000	'	161,429,000
Accumulated Amortization	-103,058,000	'	-103,058,000	'	-93,552,000
Weighted Average Remaining Useful Life	'	'	'5 years 0 months 6 days	'	'5 years 7 months 6 days
Technology and other	'	'	'	'	'
Other Intangible Assets	'	'	'	'	'
Gross Carrying Amount	15,490,000	'	15,490,000	'	15,490,000
Accumulated Amortization	($11,802,000)	'	($11,802,000)	'	($10,540,000)
Weighted Average Remaining Useful Life	'	'	'2 years 3 months 6 days	'	'3 years 1 month 6 days

LongTerm_Debt_Details

Long-Term Debt (Details) (USD $)

3 Months Ended

9 Months Ended

0 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

0 Months Ended

9 Months Ended

0 Months Ended

9 Months Ended

0 Months Ended

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Aug. 13, 2010

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Aug. 13, 2010

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Feb. 15, 2013

Sep. 30, 2013

24-May-13

Aug. 13, 2010

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Dec. 31, 2012

Oct. 07, 2013

Oct. 15, 2013

Oct. 15, 2013

Feb. 15, 2013

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Term loan facilities due through 2016

Term loan facilities due through 2016

Term loan facilities due through 2016

Term loan facilities due through 2016

Term loan facilities due through 2016

Revolving credit facility

Revolving credit facility

Senior secured credit facility

Senior secured credit facility

Senior secured credit facility

Senior secured credit facility

Senior secured credit facility

Senior secured credit facility

Senior secured credit facility

Senior secured credit facility

Senior secured credit facility

Senior secured credit facility

Senior secured credit facility

Senior secured credit facility

Senior secured credit facility

Senior secured credit facility

Senior secured credit facility

Loan Amendment

Loan Amendment

Loan Amendment

Senior notes

Senior notes

Senior notes

Senior notes

Senior notes

Senior notes

Rockwell Holdco, Inc

NDT fund

NDT fund

Subsequent Event [Member]

Third Loan Amendment

Third Loan Amendment

Third Loan Amendment

Senior notes due 2018

Senior notes due 2018

Senior notes due 2018

payment

Adjusted LIBOR

ABR

Required

Actual

Minimum

Minimum

Maximum

Maximum

Leverage ratio equal to or greater than 3.0 to 1.0

Leverage ratio less than 3.0 to 1.0 but greater than 1.0 to 1.0

Leverage ratio less than 3.0 to 1.0 but greater than 1.0 to 1.0

Leverage ratio equal to or less than 1.0 to 1.0

Leverage ratio equal to or less than 1.0 to 1.0

Adjusted LIBOR

ABR

Prior to August 15, 2014

Twelve month period commencing on August 15, 2014

Twelve month period commencing on August 15, 2015

Twelve month period commencing on August 15, 2016 and thereafter

Senior secured credit facility

Senior secured credit facility

Subsequent Event [Member]

Subsequent Event [Member]

Subsequent Event [Member]

Senior notes

Senior notes

Senior Debt

Period from quarter ended September 30, 2014 through the maturity date

Required

Required

Maximum

Minimum

Maximum

Senior secured credit facility

Senior Debt

Senior Debt

July 1, 2013 through September 30, 2014 [Member]

Long-Term Debt

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Long-term debt, gross

$754,400,000

'

$754,400,000

'

'

'

$454,407,000

[1]

$527,000,000

[1]

'

'

$0

$0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$300,000,000

$300,000,000

'

Unamortized discount

'

'

'

'

'

'

-6,187,000

-8,741,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-2,778,000

-3,090,000

'

Interest rate (as a percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

10.75%

'

'

'

'

'

'

'

'

'

'

'

'

10.75%

10.75%

10.75%

Total debt

745,442,000

'

745,442,000

'

815,169,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Less: current portion

-79,407,000

'

-79,407,000

'

-16,592,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Long-term debt, less current portion

666,035,000

'

666,035,000

'

798,577,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Variable interest rate on borrowings (as a percent)

'

'

'

'

'

'

6.75%

6.25%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Depreciation, amortization and accretion

17,505,000

[2]

18,549,000

[2]

52,454,000

[2]

56,601,000

[2]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Aggregate principal amount

'

'

'

'

'

560,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Discount rate (as a percent)

'

'

'

'

'

2.50%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.30%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Maximum borrowing capacity under credit facility

'

'

'

'

'

'

'

'

'

'

'

'

'

105,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Borrowings held in a restricted cash account as collateral for the reimbursement obligations with respect to letters of credit

'

'

'

'

'

'

289,500,000

310,600,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amount used to fund letters of credit issued

'

'

'

'

'

'

'

'

'

'

'

'

65,300,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Prepayment premium

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Period for refinancing of debt instrument following the execution date of the loan amendment

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'1 year

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Payment of debt financing fees

'

'

3,160,000

0

'

'

'

'

'

'

'

'

6,100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3,100,000

'

'

'

'

'

'

'

'

'

Payments of lead arranger banker fees

'

'

'

'

'

'

'

'

'

'

'

'

7,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

4,300,000

'

'

'

'

'

'

'

'

'

Capitalized debt financing fees

288,884,000

'

288,884,000

'

360,185,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Variable rate basis

'

'

'

'

'

'

'

'

'LIBOR

'ABR

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'LIBOR

'ABR

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Basis spread on variable rate basis (as a percent)

'

'

'

'

'

'

'

'

5.00%

4.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

4.50%

3.50%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Floor rate (as a percent)

'

'

'

'

'

'

'

'

1.75%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.75%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Increase in margin upon closing of merger

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.50%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of net cash proceeds received from non-ordinary course asset sales or other dispositions, or as a result of a casualty or condemnation to be used for prepayment of debt

'

'

'

'

'

'

'

'

'

'

'

'

100.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of net proceeds received from the issuance of debt obligations other than certain permitted debt obligations to be used for prepayment of debt

'

'

'

'

'

'

'

'

'

'

'

'

100.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of excess cash flow to be used for prepayment of debt

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

50.00%

25.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Consolidated leverage ratio for mandatory prepayment under the credit facility's covenants

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3.37

'

'

'

4

3

'

3

1

1

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Period from filing of annual report on Form 10-K with the SEC after which the prepayments of debt from excess cash flow become due

'

'

'

'

'

'

'

'

'

'

'

'

'5 days

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of succeeding scheduled principal repayment installments to which optional and mandatory prepayment is first applied

'

'

'

'

'

'

4

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Maximum amounts outstanding under the term loan and senior notes required after 150 days from closing date of the merger under loan amendment

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

675,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Repayments of long-term debt

'

'

72,593,000

0

'

'

'

'

'

'

'

'

72,600,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

79,400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Annual reduction in consolidated leverage ratio under the covenants

'

'

'

'

'

'

'

'

'

'

'

'

0.25

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Consolidated cash interest coverage ratio

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2.25

2.17

'

2

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Annual capital expenditure permitted under the covenants

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

40,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Carryforward period of the unused amount from the previous fiscal year

'

'

'

'

'

'

'

'

'

'

'

'

'1 year

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of the amount permitted for capital expenditures in previous fiscal year by which annual capital expenditure can be increased

'

'

'

'

'

'

'

'

'

'

'

'

50.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Outstanding aggregate principal amount required for applicability of cross-default provisions

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Capital expenditures

'

'

10,159,000

14,588,000

'

'

'

'

'

'

'

'

10,200,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net assets held by the NDT fund

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

471,118,000

598,496,000

'

'

'

'

'

'

'

Borrowings through private offering

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

300,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Redemption price of the debt instrument if redeemed with the proceeds of certain public equity offerings as a percentage of principal amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

100.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

Redemption price of debt instrument as a percentage of principal amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

105.38%

102.69%

100.00%

'

'

'

'

'

'

'

'

'

'

Purchase price at which debt may be required to be purchased as a percentage of principal amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

101.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Cash interest payments

'

'

61,200,000

58,700,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Payment term period after third loan amendment

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'270 days

'

'

'

'

Increase in applicable margin per amendment, percent

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.50%

'

'

'

'

'

Maximum amount outstanding threshold on specified debt after period from amendment effective date

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

675,000,000

'

'

'

Payment term period after third loan agreement if principal amount of debt exceeds threshold

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'180 days

'

'

'

'

Additional increase in applicable margin per amendment, percent

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.25%

'

'

'

'

'

Decrease in applicable margin per amendment upon reduction of debt to threshold

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.50%

'

'

'

'

'

Consent fee as percent of outstanding term loan and revolving commitments

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.25%

'

'

'

'

'

Prepayment of debt

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

14,400,000

'

'

'

'

'

'

Expected debt prepayment

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$65,000,000

'

'

'

'

'

'

[1]

The variable interest rate on borrowings under our senior secured credit facility was 6.75% as of September 30, 2013 and 6.25% as of December 31, 2012.

[2]

Depreciation, amortization and accretion expenses ("DA&A") are included in cost of revenue and SG&A expenses in the accompanying condensed consolidated statements of operations and comprehensive income (loss). DA&A expenses included in cost of revenue for the three month periods ended September 30, 2013, and 2012 were $12.2 million and $13.2 million, respectively. DA&A expenses included in cost of revenue for the nine month periods ended September 30, 2013, and 2012 were $36.6 million and $39.9 million, respectively. DA&A expenses included in SG&A for the three month periods ended September 30, 2013, and 2012 were $5.3 million and $5.6 million, respectively. DA&A expenses included in SG&A for the nine month periods ended September 30, 2013, and 2012 were $15.8 million and $16.7 million, respectively.

Facility_and_Equipment_Deconta2

Facility and Equipment Decontamination and Decommissioning (Details) (USD $)	9 Months Ended		12 Months Ended
	Sep. 30, 2013		Dec. 31, 2012
Facility and Equipment Decontamination and Decommissioning	'		'
Facility and equipment decontamination and decommissioning liabilities	$515,135,000		$624,204,000
Facility and equipment decontamination and decommissioning liabilities, current portion	-113,159,000		-138,757,000
Facility and equipment decontamination and decommissioning liabilities	401,976,000		485,447,000
Reconciliation of facility and equipment ARO	'		'
Beginning balance	618,359,000		750,649,000
Liabilities incurred	256,000		187,000
Liabilities settled	-127,400,000		-159,776,000
Accretion expense	-19,735,000		-30,017,000
ARO estimate adjustments	0		-2,718,000
Ending liability	510,950,000		618,359,000
Zion Station	'		'
Reconciliation of facility and equipment ARO	'		'
Non-current restricted cash	200,000,000	[1],[2]	200,000,000	[1],[2]
Letter of credit facility to further support D&D activities	200,000,000		'
Clive, UT	'		'
Reconciliation of facility and equipment ARO	'		'
Non-current restricted cash	76,487,000	[1]	85,606,000	[1]
Percent of cash collateralized letters of credit	101.00%		'
Other	'		'
Reconciliation of facility and equipment ARO	'		'
Non-current restricted cash	637,000		662,000
Barnwell Closure	'		'
Reconciliation of facility and equipment ARO	'		'
Escrow account	5,569,000	[3]	13,363,000	[3]
Barnwell	'		'
Reconciliation of facility and equipment ARO	'		'
Trust fund account	4,185,000		5,845,000
Facilities and equipment ARO	'		'
Facility and Equipment Decontamination and Decommissioning	'		'
Facility and equipment decontamination and decommissioning liabilities	510,950,000		618,359,000
Facilities and equipment ARO | Zion Station	'		'
Facility and Equipment Decontamination and Decommissioning	'		'
Facility and equipment decontamination and decommissioning liabilities	445,693,000		553,302,000
Facilities and equipment ARO | Clive, UT	'		'
Facility and Equipment Decontamination and Decommissioning	'		'
Facility and equipment decontamination and decommissioning liabilities	29,851,000		29,300,000
Facilities and equipment ARO | Other	'		'
Facility and Equipment Decontamination and Decommissioning	'		'
Facility and equipment decontamination and decommissioning liabilities	35,406,000		35,757,000
Closure | Barnwell	'		'
Facility and Equipment Decontamination and Decommissioning	'		'
Facility and equipment decontamination and decommissioning liabilities	$4,185,000		$5,845,000
[1]	Letters of credit issued against our deposit restricted cash account are 101% cash collateralized pursuant to our senior secured credit facility.
[2]	In connection with the execution of the Exelon Agreements, and in fulfillment of NRC regulations, we secured a $200.0 million letter of credit facility to further support the D&D activities at Zion Station. This letter of credit is cash-collateralized with proceeds obtained from our senior secured credit facility.
[3]	To fund our obligation to clean and remediate our Tennessee facilities and equipment, we have also purchased insurance policies.

EquityBased_Compensation_Detai

Equity-Based Compensation (Details) (USD $)

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Sep. 30, 2013

22-May-13

Energy Solutions Inc.

Stock options

Stock options

Phantom Stock

Phantom Stock

Phantom Stock

Phantom Stock

Phantom Stock

Rockwell Plan

Rockwell Plan

Equity-Based Compensation

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Aggregate number of shares of common stock that may be issued pursuant to awards granted under the plan

'

'

'

'

'

'

'

'

'

'

'

'

'

'

36,087

Options issued under the plan

'

'

'

'

'

'

'

'

'

'

'

'

'

34,867

'

Fair Value Assumptions of Options under Black‑Scholes Model [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Expected volatility rate

'

'

'

'

'

'

'

'

'

'

'

'

'

72.20%

'

Risk free interest rate

'

'

'

'

'

'

'

'

'

'

'

'

'

1.39%

'

Expected term

'

'

'

'

'

'

'

'

'

'

'

'

'

'6 years 6 months

'

Non-cash compensation expense

$0

$700,000

$3,600,000

$3,400,000

'

'

$1,100,000

$1,500,000

$0

$800,000

$19,800,000

$1,700,000

'

'

'

Unrecognized compensation expense

'

'

'

'

'

'

21,400,000

21,400,000

'

'

'

'

'

'

'

Recognition period of unrecognized compensation expense

'

'

'

'

'

'

'

'4 years 6 months 50 days

'

'

'

'

'

'

'

Payments to grant holders due to the change in control provision

'

'

'

'

'

21,000,000

'

'

'

'

'

'

'

'

'

Accrued expenses and other current liabilities

$207,635,000

'

$207,635,000

'

$193,546,000

'

'

'

$6,500,000

'

$6,500,000

'

$2,500,000

'

'

Income_Taxes_Details

Income Taxes (Details) (USD $)	3 Months Ended			9 Months Ended
	Sep. 30, 2013	Jun. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Income Tax Disclosure [Abstract]	'	'	'	'	'	'
Income tax expense (benefit)	($3,110,000)	'	$3,347,000	$6,155,000	($20,000)	'
Effective income tax rate (as a percent)	'	'	'	9.60%	0.10%	'
Statutory federal income tax rate (as a percent)	'	'	'	35.00%	'	'
Income taxes payment	'	'	'	8,300,000	16,600,000	'
Gross unrecognized tax benefits	100,000	'	'	100,000	'	100,000
Uncertain tax positions previously recorded were reversed due to expiration of statue of limitations for certain taxable periods in the U.S.	'	$1,100,000	'	'	'	'

Segment_Reporting_and_Business2

Segment Reporting and Business Concentrations (Details) (USD $)	3 Months Ended				9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012		Dec. 31, 2012
					group
Segment Reporting and Business Concentrations	'		'		'		'		'
Number of major operating groups	'		'		2		'		'
Revenue from external customers	$392,474	[1],[2]	$444,157	[1],[2]	$1,329,720	[1],[2]	$1,327,470	[1],[2]	'
Income (loss) from operations	10,239	[2],[3]	18,664	[2],[3]	3,016	[2],[3]	21,501	[2],[3]	'
Depreciation, amortization and accretion expense	17,505	[4]	18,549	[4]	52,454	[4]	56,601	[4]	'
Goodwill	308,451		308,281		308,451		308,281		308,608
Other long-lived assets	334,344	[5]	365,192	[5]	334,344	[5]	365,192	[5]	'
Purchases of property, plant and equipment	3,740		3,472		10,159		14,588		'
Total assets	2,348,377	[6]	2,852,877	[6]	2,348,377	[6]	2,852,877	[6]	2,655,462
Income (loss) from unconsolidated joint ventures	3,800		4,286		4,378		7,422		'
Government Group	'		'		'		'		'
Segment Reporting and Business Concentrations	'		'		'		'		'
Revenue from external customers	43,458	[1],[2]	43,972	[1],[2]	131,141	[1],[2]	124,744	[1],[2]	'
Income (loss) from operations	8,424	[2],[3]	10,422	[2],[3]	15,808	[2],[3]	13,212	[2],[3]	'
Depreciation, amortization and accretion expense	941	[4]	952	[4]	2,808	[4]	3,397	[4]	'
Goodwill	73,594		73,594		73,594		73,594		'
Other long-lived assets	12,417	[5]	15,913	[5]	12,417	[5]	15,913	[5]	'
Purchases of property, plant and equipment	4		0		47		0		'
Total assets	151,696	[6]	171,117	[6]	151,696	[6]	171,117	[6]	'
Income (loss) from unconsolidated joint ventures	4,200		4,400		5,700		7,500		'
CS	'		'		'		'		'
Segment Reporting and Business Concentrations	'		'		'		'		'
Revenue from external customers	38,961	[1],[2]	48,631	[1],[2]	123,045	[1],[2]	129,110	[1],[2]	'
Income (loss) from operations	4,280	[2],[3]	1,702	[2],[3]	10,335	[2],[3]	4,406	[2],[3]	'
Depreciation, amortization and accretion expense	7,003	[4]	7,936	[4]	20,883	[4]	23,551	[4]	'
Goodwill	90,129		90,129		90,129		90,129		'
Other long-lived assets	17,159	[5]	18,369	[5]	17,159	[5]	18,369	[5]	'
Purchases of property, plant and equipment	215		-437		375		3,503		'
Total assets	1,194,503	[6]	1,524,906	[6]	1,194,503	[6]	1,524,906	[6]	'
LP&D	'		'		'		'		'
Segment Reporting and Business Concentrations	'		'		'		'		'
Revenue from external customers	53,104	[1],[2]	62,407	[1],[2]	153,051	[1],[2]	155,768	[1],[2]	'
Income (loss) from operations	16,021	[2],[3]	18,956	[2],[3]	40,906	[2],[3]	30,758	[2],[3]	'
Depreciation, amortization and accretion expense	6,853	[4]	6,368	[4]	19,920	[4]	19,150	[4]	'
Goodwill	89,548		89,548		89,548		89,548		'
Other long-lived assets	257,780	[5]	267,466	[5]	257,780	[5]	267,466	[5]	'
Purchases of property, plant and equipment	2,874		2,509		8,784		7,969		'
Total assets	481,058	[6]	557,954	[6]	481,058	[6]	557,954	[6]	'
Income (loss) from unconsolidated joint ventures	400		100		1,300		100		'
International	'		'		'		'		'
Segment Reporting and Business Concentrations	'		'		'		'		'
Revenue from external customers	256,951	[1],[2]	289,147	[1],[2]	922,483	[1],[2]	917,848	[1],[2]	'
Income (loss) from operations	-2,920	[2],[3]	5,411	[2],[3]	20,056	[2],[3]	31,699	[2],[3]	'
Depreciation, amortization and accretion expense	1,968	[4]	1,980	[4]	5,925	[4]	5,801	[4]	'
Goodwill	55,180		55,010		55,180		55,010		'
Other long-lived assets	44,746	[5]	52,980	[5]	44,746	[5]	52,980	[5]	'
Purchases of property, plant and equipment	578		869		95		1,630		'
Total assets	480,640	[6]	540,375	[6]	480,640	[6]	540,375	[6]	'
Corporate Unallocated Items	'		'		'		'		'
Segment Reporting and Business Concentrations	'		'		'		'		'
Revenue from external customers	0	[1],[2]	0	[1],[2]	0	[1],[2]	0	[1],[2]	'
Income (loss) from operations	-15,566	[2],[3]	-17,827	[2],[3]	-84,089	[2],[3]	-58,574	[2],[3]	'
Depreciation, amortization and accretion expense	740	[4]	1,313	[4]	2,918	[4]	4,702	[4]	'
Goodwill	0		0		0		0		'
Other long-lived assets	2,242	[5]	10,464	[5]	2,242	[5]	10,464	[5]	'
Purchases of property, plant and equipment	69		531		858		1,486		'
Total assets	40,480	[6]	58,525	[6]	40,480	[6]	58,525	[6]	'
Intersegment Eliminations	'		'		'		'		'
Segment Reporting and Business Concentrations	'		'		'		'		'
Revenue from external customers	4,200		5,100		15,300		18,400		'
Cost of Revenue [Member]	'		'		'		'		'
Segment Reporting and Business Concentrations	'		'		'		'		'
Depreciation, amortization and accretion expense	12,200		13,200		36,600		39,900		'
Selling, General and Administrative Expenses [Member]	'		'		'		'		'
Segment Reporting and Business Concentrations	'		'		'		'		'
Depreciation, amortization and accretion expense	$5,300		$5,600		$15,800		$16,700		'
[1]	We eliminate intersegment revenue in consolidation. Intersegment revenue for the three month periods ended September 30, 2013, and 2012 was $4.2 million and $5.1 million, respectively. Intersegment revenue for the nine month periods ended September 30, 2013, and 2012 was $15.3 million and $18.4 million, respectively. Revenue by segment represent revenue earned based on third-party billings to customers.
[2]	Results of our operations for services provided to our customers in Canada, Asia and Europe are included in our International division.
[3]	For the three month period ended September 30, 2013, we recorded a $3.8 million of income from our unconsolidated joint ventures of which $0.4 million loss is attributable to our LP&D operations and $4.2 million of income is attributable to the Government Group. For the three month period ended September 30, 2012, we recorded $4.3 million of income from our unconsolidated joint ventures of which $0.1 million loss is attributable to LP&D operations and $4.4 million of income is attributable to the Government Group. For the nine month period ended September 30, 2013, we recorded a $4.4 million of income from our unconsolidated joint ventures of which $1.3 million loss is attributable to our LP&D operations and $5.7 million of income is attributable to the Government Group. For the nine month period ended September 30, 2012, we recorded $7.4 million of income from our unconsolidated joint ventures of which $0.1 million loss is attributable to LP&D operations and $7.5 million of income is attributable to the Government Group.
[4]	Depreciation, amortization and accretion expenses ("DA&A") are included in cost of revenue and SG&A expenses in the accompanying condensed consolidated statements of operations and comprehensive income (loss). DA&A expenses included in cost of revenue for the three month periods ended September 30, 2013, and 2012 were $12.2 million and $13.2 million, respectively. DA&A expenses included in cost of revenue for the nine month periods ended September 30, 2013, and 2012 were $36.6 million and $39.9 million, respectively. DA&A expenses included in SG&A for the three month periods ended September 30, 2013, and 2012 were $5.3 million and $5.6 million, respectively. DA&A expenses included in SG&A for the nine month periods ended September 30, 2013, and 2012 were $15.8 million and $16.7 million, respectively.
[5]	Other long-lived assets include property, plant and equipment and other intangible assets.
[6]	Corporate unallocated assets relate primarily to income tax receivables, deferred tax assets, deferred financing costs, prepaid expenses, and property, plant and equipment that benefit the entire Company and cash

Pension_Plans_Details

Pension Plans (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Compensation and Retirement Disclosure [Abstract]	'	'	'	'
Service cost	$14,183	$14,021	$42,455	$42,018
Interest cost	38,634	39,692	115,650	118,952
Expected return on plan assets	-45,183	-42,852	-135,253	-128,421
Net actuarial loss	77	119	232	355
Net periodic benefit costs	$7,711	$10,980	$23,084	$32,904

Restructuring_Details

Restructuring (Details) (USD $)	12 Months Ended	3 Months Ended	9 Months Ended		3 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2012	Sep. 30, 2013	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013	Sep. 30, 2013	Dec. 31, 2009	Sep. 30, 2013	Dec. 31, 2012	Dec. 31, 2009	Sep. 30, 2013
		Restructuring Plan	Restructuring Plan	Restructuring Plan	Restructuring Plan	Restructuring Plan	Magnox organizational restructuring program	Magnox organizational restructuring program	Magnox organizational restructuring program	Magnox organizational restructuring program	Magnox organizational restructuring program
					Employee Severance and Termination Benefits [Member]	Employee Severance and Termination Benefits [Member]	phase	Reduction of employees	Reduction of employees	Reduction of employees	Reduction of employees
							site			Magnox sites	Bradwell site
										employee	employee
Employee Termination Benefits	'	'	'	'	'	'	'	'	'	'	'
Restructuring costs	$0	$0	$1,800	'	$3,200	$9,400	'	$55,555	'	'	'
Period for payment of unpaid liability related to restructuring activities	'	'	'	'	'	'6 months	'	'24 months	'	'	'
Number of Magnox sites identified to reduce the existing workforce	'	'	'	'	'	'	3	'	'	'	'
Number of phases in which termination plan presented	'	'	'	'	'	'	2	'	'	'	'
Number of employees terminated or left on a voluntary basis	'	'	'	'	'	'	'	'	'	300	200
Reconciliation of the beginning and ending liability balances	'	'	'	'	'	'	'	'	'	'	'
Restructuring reserve, beginning balance	'	'	'	'	'	'	'	5,695	32,659	'	'
Additions	0	0	1,800	'	3,200	9,400	'	55,555	'	'	'
Payments	'	'	'	'	'	'	'	-10,937	-27,888	'	'
Effect of exchange rate	'	'	'	'	'	'	'	1,670	924	'	'
Restructuring reserve, ending balance	'	'	'	'	'	'	'	51,983	5,695	'	'
Restructuring reserve, current	'	-1,400	-1,400	-6,200	'	'	'	-24,305	0	'	'
Restructuring reserve, noncurrent	'	'	'	'	'	'	'	$27,678	$5,695	'	'

Guarantor_and_NonGuarantor_Fin2

Guarantor and Non-Guarantor Financial Information (Details) (USD $)	3 Months Ended				9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS)	'		'		'		'
Revenue	$392,474	[1],[2]	$444,157	[1],[2]	$1,329,720	[1],[2]	$1,327,470	[1],[2]
Cost of revenue	-355,989		-398,000		-1,199,418		-1,213,730
Gross profit	36,485		46,157		130,302		113,740
Selling, general and administrative expenses	-30,046		-31,779		-131,664		-99,661
Equity in income of unconsolidated joint ventures	3,800		4,286		4,378		7,422
Income from operations	10,239	[2],[3]	18,664	[2],[3]	3,016	[2],[3]	21,501	[2],[3]
Interest expense	-20,478		-17,636		-57,921		-52,822
Income (loss) from subsidiaries	0		0		0		0
Other, net	2,273		12,368		-9,226		46,093
Income (loss) before income taxes and noncontrolling interests	-7,966		13,396		-64,131		14,772
Provision for income taxes	3,110		-3,347		-6,155		20
Net income (loss)	-4,856		10,049		-70,286		14,792
Less: net income attributable to noncontrolling interests	1		3		1		35
Net income (loss) attributable to EnergySolutions	-4,855		10,052		-70,285		14,827
Other comprehensive income (loss):	'		'		'		'
Net income (loss)	-4,856		10,049		-70,286		14,792
Foreign currency translation adjustments, net of taxes	9,302		5,443		349		6,821
Change in unrecognized actuarial loss	462		273		-13		242
Other comprehensive income (loss), net of taxes	4,908		15,765		-69,950		21,855
Less: net loss attributable to noncontrolling interests	1		3		1		35
Comprehensive income (loss) attributable to EnergySolutions	4,909		15,768		-69,949		21,890
Energy Solutions, Inc.	'		'		'		'
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS)	'		'		'		'
Revenue	0		0		0		0
Cost of revenue	0		0		0		0
Gross profit	0		0		0		0
Selling, general and administrative expenses	0		0		0		0
Equity in income of unconsolidated joint ventures	0		0		0		0
Income from operations	0		0		0		0
Interest expense	0		0		0		0
Income (loss) from subsidiaries	-7,653		20,298		-70,117		15,275
Other, net	0		0		0		0
Income (loss) before income taxes and noncontrolling interests	-7,653		20,298		-70,117		15,275
Provision for income taxes	2,798		-10,246		-168		-448
Net income (loss)	-4,855		10,052		-70,285		14,827
Less: net income attributable to noncontrolling interests	0		0		0		0
Net income (loss) attributable to EnergySolutions	-4,855		10,052		-70,285		14,827
Other comprehensive income (loss):	'		'		'		'
Net income (loss)	-4,855		10,052		-70,285		14,827
Foreign currency translation adjustments, net of taxes	0		0		0		0
Change in unrecognized actuarial loss	0		0		0		0
Other comprehensive income (loss), net of taxes	-4,855		10,052		-70,285		14,827
Less: net loss attributable to noncontrolling interests	0		0		0		0
Comprehensive income (loss) attributable to EnergySolutions	-4,855		10,052		-70,285		14,827
EnergySolutions, LLC	'		'		'		'
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS)	'		'		'		'
Revenue	21,709		23,760		50,364		48,555
Cost of revenue	-7,540		-10,110		-18,739		-27,738
Gross profit	14,169		13,650		31,625		20,817
Selling, general and administrative expenses	-12,867		-21,012		-79,842		-66,150
Equity in income of unconsolidated joint ventures	0		0		0		0
Income from operations	1,302		-7,362		-48,217		-45,333
Interest expense	-16,546		-14,355		-46,895		-42,841
Income (loss) from subsidiaries	7,666		46,894		31,559		108,154
Other, net	-75		-4,879		-6,564		-4,705
Income (loss) before income taxes and noncontrolling interests	-7,653		20,298		-70,117		15,275
Provision for income taxes	0		0		0		0
Net income (loss)	-7,653		20,298		-70,117		15,275
Less: net income attributable to noncontrolling interests	0		0		0		0
Net income (loss) attributable to EnergySolutions	-7,653		20,298		-70,117		15,275
Other comprehensive income (loss):	'		'		'		'
Net income (loss)	-7,653		20,298		-70,117		15,275
Foreign currency translation adjustments, net of taxes	0		5,443		0		6,821
Change in unrecognized actuarial loss	0		273		0		242
Other comprehensive income (loss), net of taxes	-7,653		26,014		-70,117		22,338
Less: net loss attributable to noncontrolling interests	0		0		0		0
Comprehensive income (loss) attributable to EnergySolutions	-7,653		26,014		-70,117		22,338
Guarantor Subsidiaries	'		'		'		'
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS)	'		'		'		'
Revenue	89,206		161,114		280,609		348,592
Cost of revenue	-69,509		-137,284		-226,409		-297,795
Gross profit	19,697		23,830		54,200		50,797
Selling, general and administrative expenses	-12,153		-5,471		-35,843		-18,640
Equity in income of unconsolidated joint ventures	3,800		4,286		4,378		7,422
Income from operations	11,344		22,645		22,735		39,579
Interest expense	0		0		0		0
Income (loss) from subsidiaries	0		0		0		0
Other, net	-12		-2,426		154		-1,182
Income (loss) before income taxes and noncontrolling interests	11,332		20,219		22,889		38,397
Provision for income taxes	0		0		0		0
Net income (loss)	11,332		20,219		22,889		38,397
Less: net income attributable to noncontrolling interests	0		0		0		0
Net income (loss) attributable to EnergySolutions	11,332		20,219		22,889		38,397
Other comprehensive income (loss):	'		'		'		'
Net income (loss)	11,332		20,219		22,889		38,397
Foreign currency translation adjustments, net of taxes	0		0		0		0
Change in unrecognized actuarial loss	0		0		0		0
Other comprehensive income (loss), net of taxes	11,332		20,219		22,889		38,397
Less: net loss attributable to noncontrolling interests	0		0		0		0
Comprehensive income (loss) attributable to EnergySolutions	11,332		20,219		22,889		38,397
Non-Guarantor Subsidiaries	'		'		'		'
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS)	'		'		'		'
Revenue	293,904		297,738		1,039,953		987,946
Cost of revenue	-291,285		-289,061		-995,476		-945,820
Gross profit	2,619		8,677		44,477		42,126
Selling, general and administrative expenses	-5,026		-5,296		-15,979		-14,871
Equity in income of unconsolidated joint ventures	0		0		0		0
Income from operations	-2,407		3,381		28,498		27,255
Interest expense	-3,932		-3,281		-11,026		-9,981
Income (loss) from subsidiaries	0		0		0		0
Other, net	2,360		19,673		-2,816		51,980
Income (loss) before income taxes and noncontrolling interests	-3,979		19,773		14,656		69,254
Provision for income taxes	312		6,899		-5,987		468
Net income (loss)	-3,667		26,672		8,669		69,722
Less: net income attributable to noncontrolling interests	1		3		1		35
Net income (loss) attributable to EnergySolutions	-3,666		26,675		8,670		69,757
Other comprehensive income (loss):	'		'		'		'
Net income (loss)	-3,667		26,672		8,669		69,722
Foreign currency translation adjustments, net of taxes	9,302		5,443		349		6,821
Change in unrecognized actuarial loss	462		273		-13		242
Other comprehensive income (loss), net of taxes	6,097		32,388		9,005		76,785
Less: net loss attributable to noncontrolling interests	1		3		1		35
Comprehensive income (loss) attributable to EnergySolutions	6,098		32,391		9,006		76,820
Eliminations	'		'		'		'
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS)	'		'		'		'
Revenue	-12,345		-38,455		-41,206		-57,623
Cost of revenue	12,345		38,455		41,206		57,623
Gross profit	0		0		0		0
Selling, general and administrative expenses	0		0		0		0
Equity in income of unconsolidated joint ventures	0		0		0		0
Income from operations	0		0		0		0
Interest expense	0		0		0		'
Income (loss) from subsidiaries	-13		-67,192		38,558		-123,429
Other, net	0		0		0		0
Income (loss) before income taxes and noncontrolling interests	-13		-67,192		38,558		-123,429
Provision for income taxes	0		0		0		0
Net income (loss)	-13		-67,192		38,558		-123,429
Less: net income attributable to noncontrolling interests	0		0		0		0
Net income (loss) attributable to EnergySolutions	-13		-67,192		38,558		-123,429
Other comprehensive income (loss):	'		'		'		'
Net income (loss)	-13		-67,192		38,558		-123,429
Foreign currency translation adjustments, net of taxes	0		-5,443		0		-6,821
Change in unrecognized actuarial loss	0		-273		0		-242
Other comprehensive income (loss), net of taxes	-13		-72,908		38,558		-130,492
Less: net loss attributable to noncontrolling interests	0		0		0		0
Comprehensive income (loss) attributable to EnergySolutions	($13)		($72,908)		$38,558		($130,492)
[1]	We eliminate intersegment revenue in consolidation. Intersegment revenue for the three month periods ended September 30, 2013, and 2012 was $4.2 million and $5.1 million, respectively. Intersegment revenue for the nine month periods ended September 30, 2013, and 2012 was $15.3 million and $18.4 million, respectively. Revenue by segment represent revenue earned based on third-party billings to customers.
[2]	Results of our operations for services provided to our customers in Canada, Asia and Europe are included in our International division.
[3]	For the three month period ended September 30, 2013, we recorded a $3.8 million of income from our unconsolidated joint ventures of which $0.4 million loss is attributable to our LP&D operations and $4.2 million of income is attributable to the Government Group. For the three month period ended September 30, 2012, we recorded $4.3 million of income from our unconsolidated joint ventures of which $0.1 million loss is attributable to LP&D operations and $4.4 million of income is attributable to the Government Group. For the nine month period ended September 30, 2013, we recorded a $4.4 million of income from our unconsolidated joint ventures of which $1.3 million loss is attributable to our LP&D operations and $5.7 million of income is attributable to the Government Group. For the nine month period ended September 30, 2012, we recorded $7.4 million of income from our unconsolidated joint ventures of which $0.1 million loss is attributable to LP&D operations and $7.5 million of income is attributable to the Government Group.

Guarantor_and_NonGuarantor_Fin3

Guarantor and Non-Guarantor Financial Information (Details 2) (USD $)	3 Months Ended				9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012		Dec. 31, 2012
					subsidiary
Guarantor and Non-Guarantor Financial Information	'		'		'		'		'
Maximum number of other special purpose subsidiaries that may be established for license stewardship projects and excluded as a guarantor of senior secured credit facility	'		'		5		'		'
CONDENSED CONSOLIDATING BALANCE SHEET	'		'		'		'		'
Interest Expense	$20,478,000		$17,636,000		$57,921,000		$52,822,000		'
Assets	'		'		'		'		'
Total current assets	645,187,000		'		645,187,000		'		794,535,000
Property, plant and equipment, net	114,410,000		'		114,410,000		'		117,744,000
Goodwill	308,451,000		308,281,000		308,451,000		308,281,000		308,608,000
Intangibles, net	219,934,000		'		219,934,000		'		239,551,000
Restricted cash	294,043,000		'		294,043,000		'		316,754,000
Nuclear decommissioning trust fund	348,159,000		'		348,159,000		'		445,989,000
Long-term deferred costs less current portion	288,884,000		'		288,884,000		'		360,185,000
Investment in subsidiaries	0		'		0		'		0
Intercompany receivable	0		'		0		'		0
Other long term assets	129,309,000		'		129,309,000		'		72,096,000
Total assets	2,348,377,000	[1]	2,852,877,000	[1]	2,348,377,000	[1]	2,852,877,000	[1]	2,655,462,000
Liabilities and Stockholders’ Equity	'		'		'		'		'
Intercompany loan payable	0		'		0		'		0
Intercompany payable	0		'		0		'		0
Total current liabilities	646,616,000		'		646,616,000		'		644,780,000
Long-term debt, less current portion	666,035,000		'		666,035,000		'		798,577,000
Facility and equipment decontamination and decommissioning liabilities, current portion	401,976,000		'		401,976,000		'		485,447,000
Unearned revenue, less current portion	291,912,000		'		291,912,000		'		366,710,000
Other liabilities, net	102,725,000		'		102,725,000		'		59,029,000
Stockholders' equity	238,614,000		'		238,614,000		'		300,419,000
Net income attributable to noncontrolling interests	499,000		'		499,000		'		500,000
Total liabilities and stockholders’ equity	2,348,377,000		'		2,348,377,000		'		2,655,462,000
Energy Solutions, Inc.	'		'		'		'		'
CONDENSED CONSOLIDATING BALANCE SHEET	'		'		'		'		'
Interest Expense	0		0		0		0		'
Assets	'		'		'		'		'
Total current assets	4,735,000		'		4,735,000		'		6,423,000
Property, plant and equipment, net	0		'		0		'		0
Goodwill	0		'		0		'		0
Intangibles, net	0		'		0		'		0
Restricted cash	0		'		0		'		0
Nuclear decommissioning trust fund	0		'		0		'		0
Long-term deferred costs less current portion	0		'		0		'		0
Investment in subsidiaries	-79,335,000		'		-79,335,000		'		-9,554,000
Intercompany receivable	313,214,000		'		313,214,000		'		303,550,000
Other long term assets	0		'		0		'		0
Total assets	238,614,000		'		238,614,000		'		300,419,000
Liabilities and Stockholders’ Equity	'		'		'		'		'
Intercompany loan payable	0		'		0		'		0
Intercompany payable	0		'		0		'		0
Total current liabilities	0		'		0		'		0
Long-term debt, less current portion	0		'		0		'		0
Facility and equipment decontamination and decommissioning liabilities, current portion	0		'		0		'		0
Unearned revenue, less current portion	0		'		0		'		0
Other liabilities, net	0		'		0		'		0
Stockholders' equity	238,614,000		'		238,614,000		'		300,419,000
Net income attributable to noncontrolling interests	0		'		0		'		0
Total liabilities and stockholders’ equity	238,614,000		'		238,614,000		'		300,419,000
EnergySolutions, LLC	'		'		'		'		'
CONDENSED CONSOLIDATING BALANCE SHEET	'		'		'		'		'
Interest Expense	16,546,000		14,355,000		46,895,000		42,841,000		'
Assets	'		'		'		'		'
Total current assets	36,449,000		'		36,449,000		'		128,479,000
Property, plant and equipment, net	53,900,000		'		53,900,000		'		60,657,000
Goodwill	29,765,000		'		29,765,000		'		29,765,000
Intangibles, net	157,345,000		'		157,345,000		'		160,198,000
Restricted cash	89,460,000		'		89,460,000		'		110,471,000
Nuclear decommissioning trust fund	0		'		0		'		0
Long-term deferred costs less current portion	0		'		0		'		0
Investment in subsidiaries	647,701,000		'		647,701,000		'		616,038,000
Intercompany receivable	0		'		0		'		0
Other long term assets	11,530,000		'		11,530,000		'		10,884,000
Total assets	1,026,150,000		'		1,026,150,000		'		1,116,492,000
Liabilities and Stockholders’ Equity	'		'		'		'		'
Intercompany loan payable	460,578,000		'		460,578,000		'		401,015,000
Intercompany payable	'		'		'		'		0
Total current liabilities	141,259,000		'		141,259,000		'		88,815,000
Long-term debt, less current portion	468,688,000		'		468,688,000		'		601,836,000
Facility and equipment decontamination and decommissioning liabilities, current portion	31,708,000		'		31,708,000		'		31,206,000
Unearned revenue, less current portion	0		'		0		'		0
Other liabilities, net	3,252,000		'		3,252,000		'		3,174,000
Stockholders' equity	-79,335,000		'		-79,335,000		'		-9,554,000
Net income attributable to noncontrolling interests	0		'		0		'		0
Total liabilities and stockholders’ equity	1,026,150,000		'		1,026,150,000		'		1,116,492,000
Guarantor Subsidiaries	'		'		'		'		'
CONDENSED CONSOLIDATING BALANCE SHEET	'		'		'		'		'
Interest Expense	0		0		0		0		'
Assets	'		'		'		'		'
Total current assets	91,135,000		'		91,135,000		'		115,603,000
Property, plant and equipment, net	58,308,000		'		58,308,000		'		54,112,000
Goodwill	223,506,000		'		223,506,000		'		223,506,000
Intangibles, net	20,046,000		'		20,046,000		'		31,186,000
Restricted cash	4,185,000		'		4,185,000		'		5,867,000
Nuclear decommissioning trust fund	0		'		0		'		0
Long-term deferred costs less current portion	0		'		0		'		0
Investment in subsidiaries	0		'		0		'		0
Intercompany receivable	145,755,000		'		145,755,000		'		108,032,000
Other long term assets	19,756,000		'		19,756,000		'		16,450,000
Total assets	562,691,000		'		562,691,000		'		554,756,000
Liabilities and Stockholders’ Equity	'		'		'		'		'
Intercompany loan payable	0		'		0		'		0
Intercompany payable	2,694,000		'		2,694,000		'		1,441,000
Total current liabilities	52,796,000		'		52,796,000		'		67,198,000
Long-term debt, less current portion	0		'		0		'		0
Facility and equipment decontamination and decommissioning liabilities, current portion	37,716,000		'		37,716,000		'		39,358,000
Unearned revenue, less current portion	0		'		0		'		0
Other liabilities, net	1,060,000		'		1,060,000		'		1,051,000
Stockholders' equity	468,425,000		'		468,425,000		'		445,708,000
Net income attributable to noncontrolling interests	0		'		0		'		0
Total liabilities and stockholders’ equity	562,691,000		'		562,691,000		'		554,756,000
Non-Guarantor Subsidiaries	'		'		'		'		'
CONDENSED CONSOLIDATING BALANCE SHEET	'		'		'		'		'
Interest Expense	3,932,000		3,281,000		11,026,000		9,981,000		'
Assets	'		'		'		'		'
Total current assets	515,563,000		'		515,563,000		'		545,483,000
Property, plant and equipment, net	2,202,000		'		2,202,000		'		2,975,000
Goodwill	55,180,000		'		55,180,000		'		55,337,000
Intangibles, net	42,543,000		'		42,543,000		'		48,167,000
Restricted cash	200,398,000		'		200,398,000		'		200,416,000
Nuclear decommissioning trust fund	348,159,000		'		348,159,000		'		445,989,000
Long-term deferred costs less current portion	288,884,000		'		288,884,000		'		360,185,000
Investment in subsidiaries	0		'		0		'		0
Intercompany receivable	7,497,000		'		7,497,000		'		1,302,000
Other long term assets	98,023,000		'		98,023,000		'		44,762,000
Total assets	1,558,449,000		'		1,558,449,000		'		1,704,616,000
Liabilities and Stockholders’ Equity	'		'		'		'		'
Intercompany loan payable	0		'		0		'		0
Intercompany payable	5,888,000		'		5,888,000		'		11,869,000
Total current liabilities	452,561,000		'		452,561,000		'		488,779,000
Long-term debt, less current portion	197,347,000		'		197,347,000		'		196,741,000
Facility and equipment decontamination and decommissioning liabilities, current portion	332,552,000		'		332,552,000		'		414,883,000
Unearned revenue, less current portion	291,912,000		'		291,912,000		'		366,710,000
Other liabilities, net	98,413,000		'		98,413,000		'		54,804,000
Stockholders' equity	179,277,000		'		179,277,000		'		170,330,000
Net income attributable to noncontrolling interests	499,000		'		499,000		'		500,000
Total liabilities and stockholders’ equity	1,558,449,000		'		1,558,449,000		'		1,704,616,000
Eliminations	'		'		'		'		'
CONDENSED CONSOLIDATING BALANCE SHEET	'		'		'		'		'
Interest Expense	0		0		0		'		'
Assets	'		'		'		'		'
Total current assets	-2,695,000		'		-2,695,000		'		-1,453,000
Property, plant and equipment, net	0		'		0		'		0
Goodwill	0		'		0		'		0
Intangibles, net	0		'		0		'		0
Restricted cash	0		'		0		'		0
Nuclear decommissioning trust fund	0		'		0		'		0
Long-term deferred costs less current portion	0		'		0		'		0
Investment in subsidiaries	-568,366,000		'		-568,366,000		'		-606,484,000
Intercompany receivable	-466,466,000		'		-466,466,000		'		-412,884,000
Other long term assets	0		'		0		'		0
Total assets	-1,037,527,000		'		-1,037,527,000		'		-1,020,821,000
Liabilities and Stockholders’ Equity	'		'		'		'		'
Intercompany loan payable	-460,578,000		'		-460,578,000		'		-401,015,000
Intercompany payable	-8,582,000		'		-8,582,000		'		-13,310,000
Total current liabilities	'		'		'		'		-12,000
Long-term debt, less current portion	0		'		0		'		0
Facility and equipment decontamination and decommissioning liabilities, current portion	0		'		0		'		0
Unearned revenue, less current portion	0		'		0		'		0
Other liabilities, net	0		'		0		'		0
Stockholders' equity	-568,367,000		'		-568,367,000		'		-606,484,000
Net income attributable to noncontrolling interests	0		'		0		'		0
Total liabilities and stockholders’ equity	($1,037,527,000)		'		($1,037,527,000)		'		($1,020,821,000)
[1]	Corporate unallocated assets relate primarily to income tax receivables, deferred tax assets, deferred financing costs, prepaid expenses, and property, plant and equipment that benefit the entire Company and cash

Guarantor_and_NonGuarantor_Fin4

Guarantor and Non-Guarantor Financial Information (Details 3) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Cash flows from operating activities	'	'
Net cash provided by (used in) operating activities	($10,918)	$15,766
Cash flows from investing activities	'	'
Purchases of property, plant and equipment	-10,159	-14,588
Purchase of nuclear decommissioning trust fund investments	-673,864	-651,933
Proceeds from sales of nuclear decommissioning trust fund investments	677,488	654,798
Purchases of intangible assets	0	-763
Proceeds from disposition of property, plant and equipment	0	5,317
Net cash used in investing activities	-6,535	-7,169
Cash flows from financing activities	'	'
Intercompany loan receivable	0	0
Intercompany loan payable	0	0
Investment in subsidiary	0	0
Distributions to noncontrolling interests partners	0	-158
Proceeds from issuance of common stock	0	1,497
Repayments of long-term debt	-72,593	0
Restricted cash held as collateral of letter of credit obligations	21,000	0
Debt financing fees	-3,160	0
Minimum tax withholding on restricted stock awards	-432	-120
Repurchase of common stock	-7,342	0
Repayments of capital lease obligations	-573	-629
Net cash used in financing activities	-63,100	590
Effect of exchange rate on cash	520	1,513
Net increase (decrease) in cash and cash equivalents	-80,033	10,700
Cash and cash equivalents, beginning of period	134,191	77,213
Cash and cash equivalents, end of period	54,158	87,913
Energy Solutions, Inc.	'	'
Cash flows from operating activities	'	'
Net cash provided by (used in) operating activities	-63,214	14,223
Cash flows from investing activities	'	'
Purchases of property, plant and equipment	0	0
Purchase of nuclear decommissioning trust fund investments	0	0
Proceeds from sales of nuclear decommissioning trust fund investments	0	0
Purchases of intangible assets	'	0
Proceeds from disposition of property, plant and equipment	'	0
Net cash used in investing activities	0	0
Cash flows from financing activities	'	'
Intercompany loan receivable	1,207	6,740
Intercompany loan payable	'	0
Investment in subsidiary	69,781	-22,340
Distributions to noncontrolling interests partners	'	0
Proceeds from issuance of common stock	'	1,497
Repayments of long-term debt	0	'
Restricted cash held as collateral of letter of credit obligations	0	'
Debt financing fees	0	'
Minimum tax withholding on restricted stock awards	-432	-120
Repurchase of common stock	-7,342	'
Repayments of capital lease obligations	0	0
Net cash used in financing activities	63,214	-14,223
Effect of exchange rate on cash	0	0
Net increase (decrease) in cash and cash equivalents	0	0
Cash and cash equivalents, beginning of period	0	0
Cash and cash equivalents, end of period	0	0
EnergySolutions, LLC	'	'
Cash flows from operating activities	'	'
Net cash provided by (used in) operating activities	-41,433	121,545
Cash flows from investing activities	'	'
Purchases of property, plant and equipment	-1,345	-7,305
Purchase of nuclear decommissioning trust fund investments	0	0
Proceeds from sales of nuclear decommissioning trust fund investments	0	0
Proceeds from disposition of property, plant and equipment	'	0
Net cash used in investing activities	-1,345	-8,068
Cash flows from financing activities	'	'
Intercompany loan receivable	0	31,078
Intercompany loan payable	50,224	-6,740
Investment in subsidiary	-31,663	-82,874
Distributions to noncontrolling interests partners	'	0
Proceeds from issuance of common stock	'	0
Repayments of long-term debt	-72,593	'
Restricted cash held as collateral of letter of credit obligations	21,000	'
Debt financing fees	-1,960	'
Minimum tax withholding on restricted stock awards	0	0
Repurchase of common stock	0	'
Repayments of capital lease obligations	-573	0
Net cash used in financing activities	-35,565	-58,536
Effect of exchange rate on cash	0	0
Net increase (decrease) in cash and cash equivalents	-78,343	54,941
Cash and cash equivalents, beginning of period	93,080	694
Cash and cash equivalents, end of period	14,737	55,635
Guarantor Subsidiaries	'	'
Cash flows from operating activities	'	'
Net cash provided by (used in) operating activities	50,806	51,259
Cash flows from investing activities	'	'
Purchases of property, plant and equipment	-8,684	-5,635
Purchase of nuclear decommissioning trust fund investments	0	0
Proceeds from sales of nuclear decommissioning trust fund investments	0	0
Purchases of intangible assets	'	0
Proceeds from disposition of property, plant and equipment	'	5,317
Net cash used in investing activities	-8,684	-318
Cash flows from financing activities	'	'
Intercompany loan receivable	-43,917	-46,884
Intercompany loan payable	-1,514	0
Investment in subsidiary	0	0
Distributions to noncontrolling interests partners	'	0
Proceeds from issuance of common stock	'	0
Repayments of long-term debt	0	'
Restricted cash held as collateral of letter of credit obligations	0	'
Debt financing fees	0	'
Minimum tax withholding on restricted stock awards	0	0
Repurchase of common stock	0	'
Repayments of capital lease obligations	0	-629
Net cash used in financing activities	-45,431	-47,513
Effect of exchange rate on cash	0	0
Net increase (decrease) in cash and cash equivalents	-3,309	3,428
Cash and cash equivalents, beginning of period	3,371	0
Cash and cash equivalents, end of period	62	3,428
Non-Guarantor Subsidiaries	'	'
Cash flows from operating activities	'	'
Net cash provided by (used in) operating activities	-1,195	-18,679
Cash flows from investing activities	'	'
Purchases of property, plant and equipment	-130	-1,648
Purchase of nuclear decommissioning trust fund investments	-673,864	-651,933
Proceeds from sales of nuclear decommissioning trust fund investments	677,488	654,798
Purchases of intangible assets	'	0
Proceeds from disposition of property, plant and equipment	'	0
Net cash used in investing activities	3,494	1,217
Cash flows from financing activities	'	'
Intercompany loan receivable	0	0
Intercompany loan payable	0	0
Investment in subsidiary	0	-31,562
Distributions to noncontrolling interests partners	'	-158
Proceeds from issuance of common stock	'	0
Repayments of long-term debt	0	'
Restricted cash held as collateral of letter of credit obligations	0	'
Debt financing fees	-1,200	'
Minimum tax withholding on restricted stock awards	0	0
Repurchase of common stock	0	'
Repayments of capital lease obligations	0	0
Net cash used in financing activities	-1,200	-31,720
Effect of exchange rate on cash	520	1,513
Net increase (decrease) in cash and cash equivalents	1,619	-47,669
Cash and cash equivalents, beginning of period	37,740	76,519
Cash and cash equivalents, end of period	39,359	28,850
Eliminations	'	'
Cash flows from operating activities	'	'
Net cash provided by (used in) operating activities	44,118	-152,582
Cash flows from investing activities	'	'
Purchases of property, plant and equipment	0	0
Purchase of nuclear decommissioning trust fund investments	0	0
Proceeds from sales of nuclear decommissioning trust fund investments	0	0
Purchases of intangible assets	'	0
Proceeds from disposition of property, plant and equipment	'	0
Net cash used in investing activities	0	0
Cash flows from financing activities	'	'
Intercompany loan receivable	42,710	9,066
Intercompany loan payable	-48,710	6,740
Investment in subsidiary	-38,118	136,776
Distributions to noncontrolling interests partners	'	0
Proceeds from issuance of common stock	'	0
Repayments of long-term debt	0	'
Restricted cash held as collateral of letter of credit obligations	0	'
Debt financing fees	0	'
Minimum tax withholding on restricted stock awards	0	0
Repurchase of common stock	0	'
Repayments of capital lease obligations	0	0
Net cash used in financing activities	-44,118	152,582
Effect of exchange rate on cash	0	0
Net increase (decrease) in cash and cash equivalents	0	0
Cash and cash equivalents, beginning of period	0	0
Cash and cash equivalents, end of period	$0	$0