Aleris 10-Q 3 Nov 15 2015 Q3 Quarterly report Financial data

Document And Entity Information

Document And Entity Information	9 Months Ended
	Sep. 30, 2015shares
Document And Entity Information [Abstract]
Entity Registrant Name	Aleris Corporation
Entity Central Index Key	1,518,587
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Document Type	10-Q
Document Period End Date	Sep. 30, 2015
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Common Stock, Shares Outstanding	31,695,210

Consolidated Balance Sheet

Consolidated Balance Sheet - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Current Assets
Cash and cash equivalents	$ 164.8	$ 28.6
Accounts receivable (net of allowances of $5.5 and $6.5 at September 30, 2015 and December 31, 2014, respectively)	298.4	271
Inventories	500.1	627.9
Deferred income taxes	28.1	28.1
Prepaid expenses and other current assets	32.3	44.9
Assets of discontinued operations - current	0	385.6
Total Current Assets	1,023.7	1,386.1
Property, plant and equipment, net	1,036.1	942.9
Intangible assets, net	39.4	44
Deferred income taxes	146.7	146.7
Other long-term assets	91.4	72.4
Assets of discontinued operations - long-term	0	269.8
Total Assets	2,337.3	2,861.9
Current Liabilities
Accounts payable	280.2	268.2
Accrued liabilities	229.8	183.3
Deferred income taxes	6.2	6.2
Current portion of long-term debt	13.5	3.3
Liabilities of discontinued operations - current	0	195.9
Total Current Liabilities	529.7	656.9
Long-term debt	1,115	1,474.9
Deferred income taxes	63.9	0.4
Accrued pension benefits	164	178.7
Accrued postretirement benefits	44.6	46.4
Other long-term liabilities	70	49.2
Liabilities of discontinued operations - long-term	0	156.4
Total Long-Term Liabilities	1,457.5	1,906
Redeemable noncontrolling interest	0	5.7
Common stock; par value $.01; 45,000,000 shares authorized and 31,695,210 and 31,281,513 shares issued and outstanding at September 30, 2015 and December 31, 2014, respectively	0.3	0.3
Preferred stock; par value $.01; 1,000,000 shares authorized; none issued	0	0
Additional paid-in capital	423.1	414.1
Retained earnings	100.3	39.1
Accumulated other comprehensive loss	(173.6)	(160.9)
Total Aleris Corporation Equity	350.1	292.6
Noncontrolling interest	0	0.7
Total Equity	350.1	293.3
Total Liabilities and Equity	$ 2,337.3	$ 2,861.9

Consolidated Balance Sheet (Par

Consolidated Balance Sheet (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Allowance for doubtful accounts receivable	$ 5.5	$ 6.5
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	45,000,000	45,000,000
Common stock, shares issued	31,695,210	31,281,513
Common stock, shares outstanding	31,695,210	31,281,513
Redeemable preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Redeemable preferred stock, shares authorized	1,000,000	1,000,000
Redeemable preferred stock, shares issued	0	0

Consolidated Statements of Comp

Consolidated Statements of Comprehensive (Loss) Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Income Statement [Abstract]
Revenues	$ 760.7	$ 809	$ 2,280.8	$ 2,149.3
Cost of sales	702.8	724.4	2,109	1,953.7
Gross profit	57.9	84.6	171.8	195.6
Selling, general and administrative expenses	44.9	53.6	158.7	155.9
Restructuring charges	1	0.6	8.7	1.5
Losses on derivative financial instruments	2	10	2.4	11.7
Other operating expense, net	0.6	0.1	1.9	0.1
Operating income	9.4	20.3	0.1	26.4
Interest expense, net	23.6	27.3	74.7	80.4
Other expense (income), net	7.8	(12.2)	(5.1)	(13.1)
(Loss) income from continuing operations before income taxes	(22)	5.2	(69.5)	(40.9)
Benefit from income taxes	(1)	(3.3)	(16)	(2.7)
(Loss) income from continuing operations	(21)	8.5	(53.5)	(38.2)
(Loss) income from discontinued operations, net of tax	(4.4)	18.2	115	30.5
Net (loss) income	(25.4)	26.7	61.5	(7.7)
Net income from discontinued operations attributable to noncontrolling interest	0	0.2	0.1	0.9
Net (loss) income attributable to Aleris Corporation	(25.4)	26.5	61.4	(8.6)
Comprehensive (loss) income	(19.7)	(26.9)	48.8	(66.9)
Comprehensive income attributable to noncontrolling interest	0	0.2	0.1	0.9
Comprehensive (loss) income attributable to Aleris Corporation	$ (19.7)	$ (27.1)	$ 48.7	$ (67.8)

Consolidated Statements Of Cash

Consolidated Statements Of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Operating activities
Net income (loss)	$ 61.5	$ (7.7)
Depreciation and amortization	92.9	112.2
Provision for (benefit from) deferred income taxes	63.1	(4.2)
Stock-based compensation expense	3.9	11
Unrealized losses (gains) on derivative financial instruments	23.6	(7.4)
Currency exchange gains on debt	(4.1)	(7.1)
Amortization of debt issuance costs	4.9	5.8
Net gain on sale of discontinued operations	(196.9)	0
Other	(6)	2.6
Change in accounts receivable	(113.3)	(148.8)
Change in inventories	116.8	(109.5)
Change in other assets	(0.2)	(2.7)
Change in accounts payable	26.7	109.3
Change in accrued liabilities	(1.5)	9.8
Net cash provided (used) by operating activities	71.4	(36.7)
Investing activities
Payments for property, plant and equipment	(175.1)	(109)
Proceeds from the sale of businesses, net of cash transferred	587.1	0
Purchase of a business	0	(107.4)
Other	0.2	8.1
Net cash provided (used) by investing activities	412.2	(208.3)
Financing activities
Proceeds from the ABL facilities	151	337
Payments on the ABL facilities	(375)	(129)
Payments on the Senior Notes	(125)	0
Proceeds from the Zhenjiang revolver	8.5	19.8
Payments on the Zhenjiang revolver	(5.6)	0
Net (payments on) proceeds from other long-term debt	(0.4)	0.4
Debt issuance costs	(4.4)	0
Other	(1.1)	(1.8)
Net cash (used) provided by financing activities	(352)	226.4
Effect of exchange rate differences on cash and cash equivalents	(2.8)	(3.7)
Net increase (decrease) in cash and cash equivalents	128.8	(22.3)
Cash and cash equivalents at beginning of the period	36	60.1
Cash and cash equivalents at end of period	164.8	37.8
Cash and cash equivalents included within assets of discontinued operations - current	0	(12.3)
Cash and cash equivalents of continuing operations	$ 164.8	$ 25.5

Basis Of Presentation and Recen

Basis Of Presentation and Recent Accounting Pronouncements	9 Months Ended
	Sep. 30, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis Of Presentation and Recent Accounting Pronouncements	BASIS OF PRESENTATION AND RECENT ACCOUNTING PRONOUNCEMENTS Basis of Presentation The accompanying unaudited Consolidated Financial Statements have been prepared in accordance with generally accepted accounting principles in the United States (“GAAP”) for interim financial information. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. The operating results for interim periods contained herein are not necessarily indicative of the results that may be expected for any other interim period or for the full year. The accompanying Consolidated Financial Statements include the accounts of Aleris Corporation and all of its subsidiaries (collectively, except where the context otherwise requires, referred to as “Aleris,” “we,” “us,” “our,” “Company” or similar terms). Aleris Corporation is a holding company and currently conducts its business and operations through its direct wholly owned subsidiary, Aleris International, Inc. and its consolidated subsidiaries. Aleris International, Inc. is referred to herein as “Aleris International.” Recent Accounting Pronouncements In July 2015, the FASB issued ASU 2015-11, “Inventory (Topic 330): Simplifying the Measurement of Inventory.” This guidance simplifies the subsequent measurement of inventories by replacing the lower of cost or market test with a lower of cost or net realizable value test. The guidance is effective for fiscal years beginning after December 15, 2016. Early adoption is permitted. We do not expect that the adoption of this standard will have a material effect on the Company’s financial statements. In April 2015, the FASB issued ASU 2015-03, “Interest - Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs.” This guidance requires that debt issuance costs be presented as a direct reduction to the carrying amount of the related debt in the balance sheet rather than as a deferred charge, consistent with the presentation of discounts on debt. The guidance is effective for fiscal years beginning after December 15, 2015, and is to be applied retrospectively. The adoption of this guidance is not expected to have a significant impact on our financial statements, other than the reclassification of deferred issuance costs in accordance with the new presentation requirements. At September 30, 2015 , our deferred debt issuance costs, included in “Other long-term assets” on the Consolidated Balance Sheet, were $9.3 .

Inventories

Inventories	9 Months Ended
	Sep. 30, 2015
Inventory Disclosure [Abstract]
Inventories	INVENTORIES The components of our “Inventories” as of September 30, 2015 and December 31, 2014 are as follows: September 30, 2015 December 31, 2014 Raw materials $ 143.8 $ 217.3 Work in process 191.4 228.2 Finished goods 139.1 155.9 Supplies 25.8 26.5 Total inventories of continuing operations 500.1 627.9 Total inventories included within assets of discontinued operations - current — 225.2 Total inventories $ 500.1 $ 853.1

Long-Term Debt

Long-Term Debt	9 Months Ended
	Sep. 30, 2015
Debt Disclosure [Abstract]
Long-Term Debt	LONG-TERM DEBT Our debt as of September 30, 2015 and December 31, 2014 is summarized as follows: September 30, 2015 December 31, 2014 ABL facilities $ — $ 224.0 7 5/8% Senior Notes due 2018, net of discount of $2.9 and $4.5 at September 30, 2015 and December 31, 2014, respectively 432.0 495.5 7 7/8% Senior Notes due 2020, net of discount of $4.9 and $6.4 at September 30, 2015 and December 31, 2014, respectively 435.2 493.6 Exchangeable notes, net of discount of $0.5 and $0.6 at September 30, 2015 and December 31, 2014, respectively 44.3 44.2 Zhenjiang term loans, net of discount of $0.8 and $0.9 at September 30, 2015 and December 31, 2014, respectively 185.7 191.5 Zhenjiang revolver, net of discount of $0.2 and $0.2 at September 30, 2015 and December 31, 2014, respectively 26.1 24.2 Other 5.2 5.2 Total debt of continuing operations 1,128.5 1,478.2 Less: Current portion of long-term debt 13.5 3.3 Total long-term debt of continuing operations $ 1,115.0 $ 1,474.9 Senior Notes On February 9, 2011, Aleris International issued $500.0 aggregate original principal amount of 7 5 / 8 % Senior Notes due 2018 under an indenture with U.S. Bank National Association, as trustee, and on October 14, 2011, Aleris International exchanged the $500.0 aggregate original principal amount of 7 5 / 8 % Senior Notes due 2018 for $500.0 of its new 7 5 / 8 % Senior Notes due 2018 that have been registered under the Securities Act of 1933, as amended (the “7 5 / 8 % Senior Notes”). Interest on the 7 5 / 8 % Senior Notes is payable in cash semi-annually in arrears on February 15th and August 15th of each year. The 7 5 / 8 % Senior Notes mature on February 15, 2018. On October 23, 2012, Aleris International issued $500.0 aggregate original principal amount of 7 7 / 8 % Senior Notes due 2020 under an indenture with U.S. Bank National Association, as trustee, and on January 31, 2013, Aleris International exchanged the $500.0 aggregate original principal amount of 7 7 / 8 % Senior Notes due 2020 for $500.0 of its new 7 7 / 8 % Senior Notes due 2020 that have been registered under the Securities Act of 1933, as amended (the “7 7 / 8 % Senior Notes” and, together with the 7 5 / 8 % Senior Notes, the “Senior Notes”). Interest on the 7 7 / 8 % Senior Notes is payable in cash semi-annually in arrears on May 1st and November 1st of each year. The 7 7 / 8 % Senior Notes mature on November 1, 2020. On September 8, 2015, Aleris International purchased $65.1 aggregate principal amount of the 7 5 / 8 % Senior Notes and $59.9 aggregate principal amount of the 7 7 / 8 % Senior Notes pursuant to an asset sale offer (the “Asset Sale Offer”) to purchase, on a pro rata basis, up to $125.0 of the Senior Notes at a cash purchase price of 100% of the aggregate principal amount of the Senior Notes, plus accrued and unpaid interest. After consummation of the Asset Sale Offer, Aleris International had $434.9 aggregate principal amount outstanding on the 7 5 / 8 % Senior Notes and $440.1 aggregate principal amount outstanding on the 7 7 / 8 % Senior Notes. In connection with the payment, we recorded a loss on extinguishment of debt of $1.5 in “Other expense (income), net”, consisting of the remaining unamortized debt discount and issuance costs. Former ABL Facility In connection with the entry into the 2015 ABL Facility described below, on June 15, 2015, Aleris International terminated the Amended and Restated Credit Agreement, dated June 30, 2011, among Aleris International, each subsidiary of Aleris International a party thereto, the lenders party thereto from time to time, Bank of America, N.A., as Administrative Agent, and the other parties thereto. 2015 ABL Facility On June 15, 2015, Aleris International entered into a credit agreement providing for a $600.0 revolving credit facility (the “2015 ABL Facility”) which permits multi-currency borrowings up to $600.0 by Aleris International and its U.S. subsidiaries and up to a combined $300.0 by Aleris Switzerland GmbH, a wholly owned Swiss subsidiary, Aleris Aluminum Duffel BVBA, a wholly owned Belgian subsidiary, Aleris Rolled Products Germany GmbH, a wholly owned German subsidiary and, upon its accession to the credit agreement, Aleris Casthouse Germany GmbH, a wholly owned German subsidiary (but limited to $600.0 in total). The availability of funds to the borrowers located in each jurisdiction is subject to a borrowing base for that jurisdiction and the jurisdictions in which certain subsidiaries of such borrowers are located. The 2015 ABL Facility contains, in the aggregate, a $45.0 sublimit for swingline loans and also provides for the issuance of up to $125.0 of letters of credit. The credit agreement provides that commitments under the 2015 ABL Facility may be increased at any time by up to an additional $300.0 , subject to certain conditions. Borrowings under the 2015 ABL Facility bear interest at rates equal to the following: ▪ in the case of borrowings in U.S. dollars, (a) a LIBOR determined by reference to the offered rate for deposits in dollars for the interest period relevant to such borrowing (the “Eurodollar Rate”), plus an applicable margin ranging from 1.50% to 2.00% based on excess availability under the 2015 ABL Facility or (b) a base rate determined by reference to the higher of (1) JPMorgan Chase Bank, N.A.’s prime lending rate and (2) the one month Eurodollar Rate, plus an applicable margin ranging from 0.50% to 1.00% based on excess availability under the 2015 ABL Facility; ▪ in the case of borrowings in euros, a EURIBOR determined by the administrative agent plus an applicable margin ranging from 1.50% to 2.00% based on excess availability under the 2015 ABL Facility; and ▪ in the case of borrowings in Sterling, a LIBOR determined by reference to the offered rate for deposits in Sterling for the interest period relevant to such borrowing, plus an applicable margin ranging from 1.50% to 2.00% based on excess availability under the 2015 ABL Facility. In addition to paying interest on any outstanding principal under the 2015 ABL Facility, Aleris International is required to pay a commitment fee in respect of unutilized commitments ranging from 0.250% to 0.375% based on average utilization for the applicable period. Aleris International must also pay customary letter of credit fees and agency fees. The 2015 ABL Facility is subject to mandatory prepayment with (i) 100% of the net cash proceeds of certain asset sales and casualty proceeds relating to the collateral for the 2015 ABL Facility under certain circumstances, and (ii) 100% of the net cash proceeds from issuance of debt, other than debt permitted under the 2015 ABL Facility. In addition, if at any time outstanding loans, unreimbursed letter of credit drawings and undrawn letters of credit under the 2015 ABL Facility exceed the applicable borrowing base in effect at such time, Aleris International is required to repay outstanding loans or cash collateralize letters of credit in an aggregate amount equal to such excess, with no reduction of the commitment amount. There is no scheduled amortization under the 2015 ABL Facility. The principal amount outstanding will be due and payable in full on June 15, 2020. However, an early maturity provision would be triggered 60 days prior to the stated maturity of each of Aleris International’s 7 5 / 8 % senior notes and 7 7 / 8 % senior notes unless less than $10.0 of the applicable Senior Notes remain outstanding and more than $100.0 is available under the 2015 ABL Facility. Aleris International may voluntarily reduce the unutilized portion of the commitment amount and repay outstanding loans at any time upon three business days’ prior written notice without premium or penalty other than customary “breakage” costs with respect to Eurodollar Rate loans, Sterling LIBOR loans and EURIBOR loans. The credit agreement governing the 2015 ABL Facility contains a number of covenants that, subject to certain exceptions, impose restrictions on Aleris International and certain of its subsidiaries, including, without limitation, restrictions on the ability to, among other things: ▪ incur additional debt; ▪ create liens; ▪ merge, consolidate or sell assets; ▪ make investments, loans and acquisitions; ▪ pay dividends and make certain payments; or ▪ enter into affiliate transactions. Although the credit agreement governing the 2015 ABL Facility generally does not require us to comply with any financial ratio maintenance covenants, if combined availability is less than the greater of (a) 10% of the lesser of the combined borrowing base and the combined commitments and (b) $40.0 , a minimum fixed charge coverage ratio (as defined in the credit agreement) of at least 1.0 to 1.0 will apply. The credit agreement also contains certain customary affirmative covenants and events of default. The 2015 ABL Facility is secured, subject to certain exceptions, by a first-priority security interest in substantially all of Aleris International’s current assets and related intangible assets located in the U.S. and substantially all of the current assets and related intangible assets of substantially all of its wholly owned U.S. subsidiaries under a pledge and security agreement. The obligations of the Swiss borrower, the Belgian borrower and the German borrowers are secured by their respective current assets and related intangible assets, if any.

Commitments And Contingencies

Commitments And Contingencies	9 Months Ended
	Sep. 30, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	COMMITMENTS AND CONTINGENCIES Environmental Proceedings Our operations are subject to federal, state, local and foreign environmental laws and regulations governing air emissions, wastewater discharges, the handling, storage, disposal and remediation of hazardous substances and wastes and employee health and safety. These laws can impose joint and several liability for releases or threatened releases of hazardous substances upon statutorily defined parties, including us, regardless of fault or the lawfulness of the original activity or disposal. Given the changing nature of environmental legal requirements, we may be required, from time to time, to take environmental control measures at some of our facilities to meet future requirements. We have been named as a potentially responsible party in certain proceedings initiated pursuant to the Comprehensive Environmental Response, Compensation, and Liability Act and similar state statutes and may be named a potentially responsible party in other similar proceedings in the future. It is not anticipated that the costs incurred in connection with the presently pending proceedings will, individually or in the aggregate, have a material adverse effect on our financial position, results of operations or cash flows. We are performing operations and maintenance at two Superfund sites for matters arising out of past waste disposal activity associated with closed facilities. We are also under orders to perform environmental remediation by agencies in four states and one non-U.S. country at seven sites. Our reserves for environmental remediation liabilities totaled $26.1 and $24.4 at September 30, 2015 and December 31, 2014 , respectively, and have been classified as “Other long-term liabilities” and “Accrued liabilities” in the Consolidated Balance Sheet. Of the environmental liabilities recorded at September 30, 2015 and December 31, 2014 , $13.5 and $15.0 , respectively, are indemnified. In addition to environmental liabilities, we have recorded asset retirement obligations associated with legal requirements related to the retirement of certain assets. Our total asset retirement obligations were $4.9 and $4.6 at September 30, 2015 and December 31, 2014 , respectively. The amount represents the most probable costs of remedial actions. We estimate the costs related to currently identified remedial actions will be paid out primarily over the next 10 years . Legal Proceedings We are party to routine litigation and proceedings as part of the ordinary course of business and do not believe that the outcome of any existing proceedings would have a material adverse effect on our financial position, results of operations or cash flows. We have established accruals for those loss contingencies, including litigation and environmental contingencies, for which it has been determined that a loss is probable; none of such loss contingencies is material. For those loss contingencies, including litigation and environmental contingencies, which have been determined to be reasonably possible, an estimate of the possible loss or range of loss cannot be determined because the claims, amount claimed, facts or legal status are not sufficiently developed or advanced in order to make such a determination. While we cannot estimate the loss or range of loss at this time, we do not believe that the outcome of any of these existing proceedings would be material to our financial position, results of operations or cash flows.

Stockholders' Equity and Redeem

Stockholders' Equity and Redeemable Noncontrolling Interest	9 Months Ended
	Sep. 30, 2015
Stockholders' Equity Note [Abstract]
Stockholders' Equity and Redeemable Noncontrolling Interest	STOCKHOLDERS ’ EQUITY AND REDEEMABLE NONCONTROLLING INTEREST The following table summarizes the activity within stockholders’ equity and redeemable noncontrolling interest for the nine months ended September 30, 2015 : Aleris Corporation equity Noncontrolling interest Total equity Redeemable noncontrolling interest Total equity at January 1, 2015 $ 292.6 $ 0.7 $ 293.3 $ 5.7 Net income 61.4 0.1 61.5 — Other comprehensive loss (12.7 ) — (12.7 ) — Stock-based compensation activity 3.2 — 3.2 — Conversion of Aleris International preferred stock to common stock 5.6 — 5.6 (5.6 ) Other — (0.8 ) (0.8 ) (0.1 ) Total equity at September 30, 2015 $ 350.1 $ — $ 350.1 $ — The following table shows changes in the number of our outstanding shares of common stock: Outstanding shares of common stock Balance at January 1, 2015 31,281,513 Issuance associated with options exercised 29,624 Issuance associated with vested restricted stock units 79,524 Issuance upon conversion of Aleris International preferred stock 304,549 Balance at September 30, 2015 31,695,210

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	9 Months Ended
	Sep. 30, 2015
Accumulated Other Comprehesive Income [Abstract]
Accumulated Other Comprehensive Loss	ACCUMULATED OTHER COMPREHENSIVE LOSS The following table summarizes the activity within accumulated other comprehensive loss for the nine months ended September 30, 2015 : Currency translation Pension and other postretirement Total Balance at January 1, 2015 $ (47.2 ) $ (113.7 ) $ (160.9 ) Current period currency translation adjustments (66.5 ) 4.7 (61.8 ) Reclassification into earnings due to the sale of businesses 16.4 28.8 45.2 Amortization of net actuarial losses, net of tax — 3.9 3.9 Balance at September 30, 2015 $ (97.3 ) $ (76.3 ) $ (173.6 ) A summary of reclassifications out of accumulated other comprehensive loss for the nine months ended September 30, 2015 is provided below: Description of reclassifications out of accumulated other comprehensive loss Amount reclassified Reclassification into earnings due to the sale of businesses $ (45.2 ) (a) Amortization of net actuarial losses (4.6 ) (b) Deferred tax benefit on pension and other postretirement liability adjustments 0.7 Losses reclassified into earnings, net of tax $ (49.1 ) (a) This reclassification out of accumulated other comprehensive loss is included in “(Loss) income from discontinued operations, net of tax” in the Consolidated Statements of Comprehensive (Loss) Income. (b) This component of accumulated other comprehensive loss is included in the computation of net periodic benefit expense and net postretirement benefit expense (see Note 10, “Employee Benefit Plans,” for additional detail).

Segment Information

Segment Information	9 Months Ended
	Sep. 30, 2015
Segment Reporting [Abstract]
Segment Information	SEGMENT INFORMATION We report three operating segments based on the organizational structure that is used by the chief operating decision maker to evaluate performance, make decisions on resource allocation and for which discrete financial information is available. The Company’s operating segments are North America, Europe and Asia Pacific. Measurement of Segment Income or Loss and Segment Assets The accounting policies of the reportable segments are the same as those described in the summary of significant accounting policies in the Consolidated Financial Statements for the year ended December 31, 2014 . Our measure of profitability for our operating segments is referred to as segment income and loss. Segment income and loss includes gross profits, segment specific realized gains and losses on derivative financial instruments, segment specific other income and expense, segment specific selling, general and administrative (“SG&A”) expense and an allocation of certain functional SG&A expenses. Segment income and loss excludes provisions for and benefits from income taxes, restructuring items, interest, depreciation and amortization, unrealized and certain realized gains and losses on derivative financial instruments, corporate general and administrative costs, start-up costs, gains and losses on asset sales, currency exchange gains and losses on debt and certain other gains and losses. Intra-entity sales and transfers are recorded at market value. Consolidated cash, net capitalized debt costs, deferred tax assets and assets related to our headquarters offices are not allocated to the segments. Reportable Segment Information The following table shows our revenues and segment income (loss) for the periods presented in our Consolidated Statements of Comprehensive (Loss) Income: Three months ended September 30, 2015 North America Europe Asia Pacific Intra-entity Revenues Total Revenues to external customers $ 405.6 $ 331.4 $ 23.7 $ 760.7 Intra-entity revenues 0.2 8.7 0.8 $ (9.7 ) — Total revenues $ 405.8 $ 340.1 $ 24.5 $ (9.7 ) $ 760.7 Segment income $ 36.4 $ 35.1 $ 0.6 $ 72.1 Three months ended September 30, 2014 North America Europe Asia Pacific Intra-entity Revenues Total Revenues to external customers $ 466.7 $ 328.4 $ 13.9 $ 809.0 Intra-entity revenues 1.3 33.9 1.7 $ (36.9 ) — Total revenues $ 468.0 $ 362.3 $ 15.6 $ (36.9 ) $ 809.0 Segment income $ 26.4 $ 38.1 $ — $ 64.5 Nine months ended September 30, 2015 North America Europe Asia Pacific Intra-entity Revenues Total Revenues to external customers $ 1,225.0 $ 991.3 $ 64.5 $ 2,280.8 Intra-entity revenues 0.9 33.3 4.7 $ (38.9 ) — Total revenues $ 1,225.9 $ 1,024.6 $ 69.2 $ (38.9 ) $ 2,280.8 Segment income (loss) $ 93.0 $ 99.5 $ (1.2 ) $ 191.3 Nine months ended September 30, 2014 North America Europe Asia Pacific Intra-entity Revenues Total Revenues to external customers $ 1,146.0 $ 972.8 $ 30.5 $ 2,149.3 Intra-entity revenues 2.4 96.5 6.3 $ (105.2 ) — Total revenues $ 1,148.4 $ 1,069.3 $ 36.8 $ (105.2 ) $ 2,149.3 Segment income $ 75.8 $ 110.6 $ — $ 186.4 The following table reconciles total segment income to “ (Loss) income from continuing operations before income taxes ” as reported in our Consolidated Statements of Comprehensive (Loss) Income: For the three months ended For the nine months ended September 30, 2015 September 30, 2014 September 30, 2015 September 30, 2014 Total segment income $ 72.1 $ 64.5 $ 191.3 $ 186.4 Unallocated amounts: Depreciation and amortization (27.7 ) (33.6 ) (92.9 ) (87.8 ) Other corporate general and administrative expenses (8.0 ) (16.5 ) (41.1 ) (49.1 ) Restructuring charges (1.0 ) (0.6 ) (8.7 ) (1.5 ) Interest expense, net (23.6 ) (27.3 ) (74.7 ) (80.4 ) Unallocated (losses) gains on derivative financial instruments (21.5 ) 13.7 (26.0 ) 4.0 Unallocated currency exchange (losses) gains (4.8 ) 8.5 3.4 7.7 Start-up costs (6.8 ) (3.5 ) (14.6 ) (19.8 ) Other expense, net (0.7 ) — (6.2 ) (0.4 ) (Loss) income from continuing operations before income taxes $ (22.0 ) $ 5.2 $ (69.5 ) $ (40.9 ) The following table shows our reportable segment assets as of September 30, 2015 and December 31, 2014 : September 30, 2015 December 31, 2014 Assets North America $ 828.8 $ 790.9 Europe 675.5 701.9 Asia Pacific 410.3 433.3 Assets of discontinued operations — 655.4 Unallocated assets 422.7 280.4 Total consolidated assets $ 2,337.3 $ 2,861.9

Stock-Based Compensation

Stock-Based Compensation	9 Months Ended
	Sep. 30, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation	STOCK-BASED COMPENSATION On June 1, 2010, the Board of Directors of Aleris Corporation approved the Aleris Corporation 2010 Equity Incentive Plan, which has been amended from time to time (the “2010 Equity Plan”). Stock options, restricted stock units and restricted shares have been granted under the 2010 Equity Plan to certain members of management of the Company and directors. All stock options granted have a life not to exceed ten years and generally vest over a period not to exceed four years. Shares of common stock are issued upon stock option exercises from available shares. The restricted stock units and restricted shares also vest over a period not to exceed four years. A portion of the stock options, as well as a portion of the restricted stock units and restricted shares, may vest upon a change in control event should the event occur prior to full vesting of these awards, depending on the amount of vesting that has already occurred at the time of the event in comparison to the change in our largest stockholders’ overall level of beneficial ownership that results from the event. During the nine months ended September 30, 2015 , we granted 69,400 stock options and 49,676 restricted stock units to certain members of our management and directors, and 596,872 stock options and 141,671 restricted stock units were forfeited. These forfeitures primarily related to the awards granted to our former Chief Executive Officer and to management of the discontinued operations. We recorded a benefit associated with stock options and restricted stock units of $1.5 during the three months ended September 30, 2015, due to the reversal of expense on the unvested awards granted to our former Chief Executive Officer, and an expense of $3.9 for the nine months ended September 30, 2015 . We recorded stock compensation expense of $2.8 and $11.0 during the three and nine months ended September 30, 2014 , respectively.

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2015
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES Our effective tax rates were 4.6% and 23.0% for the three and nine months ended September 30, 2015 , respectively, and (60.3)% and 6.9% for the three and nine months ended September 30, 2014 , respectively. The effective tax rate for the three and nine months ended September 30, 2015 and 2014 differed from the federal statutory rate applied to income and losses before income taxes primarily as a result of the mix of income, losses and tax rates between tax jurisdictions and valuation allowances. We have valuation allowances recorded to reduce certain deferred tax assets to amounts that are more likely than not to be realized. The valuation allowances relate to the potential inability to realize our deferred tax assets associated with amortization and net operating loss carryforwards in the U.S. and net operating loss carryforwards in non-U.S. jurisdictions. We intend to maintain our valuation allowances until sufficient positive evidence exists (such as cumulative positive earnings and estimated future taxable income) to support their reversal. As of September 30, 2015 , we had $2.5 of unrecognized tax benefits. The majority of the gross unrecognized tax benefits, if recognized, would affect the annual effective tax rate. We recognize interest and penalties related to uncertain tax positions within “Benefit from income taxes” in the Consolidated Statements of Comprehensive (Loss) Income. As of September 30, 2015 , we had approximately $0.4 of accrued interest related to uncertain tax positions. The 2009 through 2014 tax years remain open to examination. During the fourth quarter of 2013, a non-U.S. taxing jurisdiction commenced an examination of our tax returns for the tax years ended December 31, 2012, 2011, 2010 and 2009 that is anticipated to be completed within six months of the reporting date.

Employee Benefit Plans

Employee Benefit Plans	9 Months Ended
	Sep. 30, 2015
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]
Employee Benefit Plans	EMPLOYEE BENEFIT PLANS Defined Benefit Pension Plans The components of the net periodic benefit expense are as follows: U.S. pension benefits For the three months ended For the nine months ended September 30, 2015 September 30, 2014 September 30, 2015 September 30, 2014 Service cost $ 1.0 $ 0.8 $ 2.9 $ 2.3 Interest cost 1.8 1.8 5.3 5.4 Amortization of net actuarial losses 0.5 — 1.4 — Amortization of prior service cost — — 0.2 — Expected return on plan assets (2.7 ) (2.6 ) (8.1 ) (7.8 ) Net periodic benefit expense $ 0.6 $ — $ 1.7 $ (0.1 ) Non U.S. pension benefits For the three months ended For the nine months ended September 30, 2015 September 30, 2014 September 30, 2015 September 30, 2014 Service cost $ 0.7 $ 1.0 $ 2.5 $ 2.9 Interest cost 0.7 1.9 2.4 5.8 Amortization of net actuarial losses 0.7 0.3 2.6 1.0 Expected return on plan assets — — — (0.1 ) Net periodic benefit expense 2.1 3.2 7.5 9.6 Net periodic benefit expense reclassified to income from discontinued operations — (1.5 ) (1.2 ) (4.6 ) Net periodic benefit expense included in continuing operations $ 2.1 $ 1.7 $ 6.3 $ 5.0 Other Postretirement Benefit Plans The components of net postretirement benefit expense are as follows: For the three months ended For the nine months ended September 30, 2015 September 30, 2014 September 30, 2015 September 30, 2014 Service cost $ — $ — $ 0.1 $ 0.1 Interest cost 0.4 0.5 1.3 1.3 Amortization of net actuarial losses (gains) 0.1 (0.1 ) 0.4 (0.3 ) Net postretirement benefit expense $ 0.5 $ 0.4 $ 1.8 $ 1.1

Derivative And Other Financial

Derivative And Other Financial Instruments	9 Months Ended
	Sep. 30, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative and Other Financial Instruments	DERIVATIVE AND OTHER FINANCIAL INSTRUMENTS We use forward contracts and options, as well as contractual price escalators, to reduce the risks associated with our metal, natural gas and other supply requirements, as well as fuel costs and certain currency exposures. Generally, we enter into master netting arrangements with our counterparties and offset net derivative positions with the same counterparties against amounts recognized for the right to reclaim cash collateral or the obligation to return cash collateral under those arrangements in our Consolidated Balance Sheet. For classification purposes, we record the net fair value of each type of derivative position that is expected to settle in less than one year with each counterparty as a net current asset or liability and each type of long-term position as a net long-term asset or liability. At September 30, 2015 , $3.7 of cash collateral was posted and at December 31, 2014 , no cash collateral was posted. The amounts shown in the table below represent the gross amounts of recognized assets and liabilities, the amounts offset in the Consolidated Balance Sheet and the net amounts of assets and liabilities presented therein. As of September 30, 2015 and December 31, 2014 , there were no amounts subject to an enforceable master netting arrangement or similar agreement that have not been offset in the Consolidated Balance Sheet. Fair Value of Derivatives as of September 30, 2015 December 31, 2014 Derivatives by Type Asset Liability Asset Liability Metal $ 12.7 $ (31.5 ) $ 28.6 $ (21.4 ) Energy — (0.6 ) — (3.4 ) Currency 0.2 (0.3 ) — — Total 12.9 (32.4 ) 28.6 (24.8 ) Effect of counterparty netting (11.2 ) 11.2 (19.6 ) 19.6 Effect of cash collateral — 3.7 — — Net derivatives as classified in the balance sheet $ 1.7 $ (17.5 ) $ 9.0 $ (5.2 ) The fair value of our derivative financial instruments at September 30, 2015 and December 31, 2014 are recorded in the Consolidated Balance Sheet as follows: Asset Derivatives Balance Sheet Location September 30, 2015 December 31, 2014 Metal Prepaid expenses and other current assets $ 1.7 $ 8.7 Other long-term assets — 0.3 Total $ 1.7 $ 9.0 Liability Derivatives Balance Sheet Location September 30, 2015 December 31, 2014 Metal Accrued liabilities $ 13.9 $ 0.5 Other long-term liabilities 2.9 1.3 Energy Accrued liabilities 0.6 3.4 Currency Other long-term liabilities 0.1 — Total $ 17.5 $ 5.2 Both realized and unrealized gains and losses on derivative financial instruments are included within “ Losses on derivative financial instruments ” in the Consolidated Statements of Comprehensive (Loss) Income. Realized (gains) losses on derivative financial instruments totaled the following: For the three months ended For the nine months ended September 30, 2015 September 30, 2014 September 30, 2015 September 30, 2014 Metal $ (20.0 ) $ 23.5 $ (25.9 ) $ 16.9 Energy 0.6 0.2 2.4 (1.2 ) Currency 0.1 — 0.2 — Metal Hedging The selling prices of the majority of the orders for our products are established at the time of order entry or, for certain customers, under long-term contracts. As the related raw materials used to produce these orders are purchased several months or years after the selling prices are fixed, margins are subject to the risk of changes in the purchase price of the raw materials used for these fixed price sales. In order to manage this transactional exposure, LME future, swaps or forward purchase contracts are purchased at the time the selling prices are fixed. As metal is purchased to fill these fixed price sales orders, LME future, swaps or forward contracts are then sold. We also maintain a significant amount of inventory on-hand to meet anticipated and unpriced future sales. In order to preserve the value of this inventory, LME future or forward contracts are sold at the time inventory is purchased. As sales orders are priced, LME future or forward contracts are purchased. These derivatives generally settle within three months. We can also use call option contracts, which function in a manner similar to the natural gas call option contracts discussed below, and put option contracts for managing metal price exposures. Option contracts require the payment of a premium which is recorded as a realized loss upon settlement or expiration of the option contract. Upon settlement of a put option contract, we receive cash and recognize a related gain if the LME closing price is less than the strike price of the put option. If the put option strike price is less than the LME closing price, no amount is paid and the option expires. As of September 30, 2015 and December 31, 2014 , we had 0.2 metric tons and 0.2 metric tons of metal buy and sell derivative contracts, respectively. Energy Hedging To manage our price exposure for natural gas purchases, we fix the future price of a portion of our natural gas requirements by entering into financial hedge agreements. Under these agreements, payments are made or received based on the differential between the monthly closing price on the New York Mercantile Exchange (“NYMEX”) and the contractual hedge price. We can also use a combination of call option contracts and put option contracts for managing the exposure to increasing prices while maintaining our ability to benefit from declining prices. Upon settlement of call option contracts, we receive cash and recognize a related gain if the NYMEX closing price exceeds the strike price of the call option. If the call option strike price exceeds the NYMEX closing price, no amount is received and the option expires unexercised. Upon settlement of a put option contract, we pay cash and recognize a related loss if the NYMEX closing price is lower than the strike price of the put option. If the put option strike price is less than the NYMEX closing price, no amount is paid and the option expires unexercised. Option contracts require the payment of a premium which is recorded as a realized loss upon settlement or expiration of the option contract. Natural gas cost can also be managed through the use of cost escalators included in some of our long-term supply contracts with customers, which limits exposure to natural gas price risk. As of September 30, 2015 , we had 0.3 million and 0.8 million of British thermal unit forward buy and sell contracts, respectively. As of December 31, 2014 , we had 3.5 million of British thermal unit forward buy contracts. We use independent freight carriers to deliver our products. As part of the total freight charge, these carriers include a per mile diesel surcharge based on the Department of Energy, Energy Information Administration’s (“DOE”) Weekly Retail Automotive Diesel National Average Price. We have entered into over-the-counter DOE diesel fuel swaps with financial counterparties to mitigate the impact of the volatility of diesel fuel prices on our freight costs. Under these swap agreements, we pay a fixed price per gallon of diesel fuel determined at the time the agreements were executed and receive a floating rate payment that is determined on a monthly basis based on the average price of the DOE Diesel Fuel Index during the applicable month. The swaps are designed to offset increases or decreases in fuel surcharges that we pay to our carriers. All swaps are financially settled. There is no possibility of physical settlement. As of September 30, 2015 we had 0.3 gallons of diesel swap contracts. We had no diesel swap contracts at December 31, 2014 . Currency Hedging Our aerospace and heat exchanger businesses expose the U.S. dollar operating results of our European operations to fluctuations in the Euro as the sales contracts are generally in U.S. dollars while the costs of production are in Euros. In order to mitigate the risk that fluctuations in the Euro may have on our business, we have entered into forward currency contracts. As of September 30, 2015 , we had Euro forward contracts covering a notional amount of €32.9 . We had no Euro forward contracts at December 31, 2014 . Credit Risk We are exposed to losses in the event of non-performance by the counterparties to the derivative financial instruments discussed above; however, we do not anticipate any non-performance by the counterparties. The counterparties are evaluated for creditworthiness and risk assessment prior to initiating trading activities with the brokers and periodically throughout each year while actively trading. Recurring Fair Value Measurements Derivative contracts are recorded at fair value using quoted market prices and significant other observable inputs. Fair value is defined by Financial Accounting Standards Board Accounting Standards Codification 820, “Fair Value Measurements and Disclosures,” as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The fair value hierarchy distinguishes between (1) market participant assumptions developed based on market data obtained from independent sources (observable inputs) and (2) an entity’s own assumptions about market participant assumptions developed based on the best information available in the circumstances (unobservable inputs). The fair value hierarchy consists of three broad levels, which gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1) and the lowest priority to unobservable inputs (Level 3). The three levels of the fair value hierarchy are described below: Level 1—Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities. Level 2—Inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly, including quoted prices for similar assets or liabilities in active markets; quoted prices for identical or similar assets or liabilities in markets that are not active; inputs other than quoted prices that are observable for the asset or liability (e.g., interest rates); and inputs that are derived principally from or corroborated by observable market data by correlation or other means. Level 3—Inputs that are both significant to the fair value measurement and unobservable. We endeavor to use the best available information in measuring fair value. Where appropriate, valuations are adjusted for various factors such as liquidity, bid/offer spreads, and credit considerations. Such adjustments are generally based on available market evidence and unobservable inputs. Financial assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. As of September 30, 2015 and December 31, 2014 , all of our derivative assets and liabilities represent Level 2 fair value measurements. Other Financial Instruments The carrying amount, fair values and level in the fair value hierarchy of our other financial instruments at September 30, 2015 and December 31, 2014 are as follows: September 30, 2015 December 31, 2014 Carrying Amount Fair Value Level in the Fair Value Hierarchy Carrying Amount Fair Value Level in the Fair Value Hierarchy Cash and cash equivalents $ 164.8 $ 164.8 Level 1 $ 28.6 $ 28.6 Level 1 Receivables held in escrow 24.3 24.3 Level 3 — — n/a ABL facilities — — Level 2 224.0 224.0 Level 2 Exchangeable notes 44.3 63.3 Level 3 44.2 63.3 Level 3 7 5 / 8 % senior notes 432.0 421.9 Level 1 495.5 508.0 Level 1 7 7 / 8 % senior notes 435.2 424.7 Level 1 493.6 497.5 Level 1 Zhenjiang term loans 185.7 186.5 Level 3 191.5 192.4 Level 3 Zhenjiang revolver 26.1 26.3 Level 3 24.2 24.4 Level 3 The receivables held in escrow include shares of Real Industry, Inc.’s Series B non-participating preferred stock. The fair value was estimated using a lattice model based on the expected time to maturity, cash flows of the preferred stock and an estimated yield using available market data. The principal amount of the ABL facilities approximates fair value because the interest rate paid is variable and there have been no significant changes in the credit risk of Aleris International subsequent to the borrowings. The fair value of Aleris International’s exchangeable notes was estimated using a binomial lattice pricing model based on the fair value of our common stock, a risk-free interest rate of 1.3% as of September 30, 2015 and 1.7% as of December 31, 2014 and expected equity volatility of 45% as of September 30, 2015 and December 31, 2014 . Expected equity volatility was determined based on historical stock prices and implied and stated volatilities of our peer companies. The fair values of the Senior Notes were estimated using market quotations. The principal amount of the Zhenjiang term loans and Zhenjiang revolver approximates fair value because the interest rate paid is variable, is set for periods of six months or less and there have been no significant changes in the credit risk of Aleris Zhenjiang subsequent to the inception of the China loan facility.

Discontinued Operations

Discontinued Operations	9 Months Ended
	Sep. 30, 2015
Discontinued Operations and Disposal Groups [Abstract]
Discontinued Operations	DISCONTINUED OPERATIONS On February 27, 2015, we finalized the sale of our North American and European recycling and specification alloys businesses to Real Industry, Inc. (formerly known as Signature Group Holdings, Inc.) and certain of its affiliates. These businesses include substantially all of the operations and assets previously reported in the Recycling and Specification Alloys North America and Recycling and Specification Alloys Europe segments. Upon closing, we received $496.2 of cash, and an additional $5.0 of cash and 25,000 shares of Real Industry, Inc.’s Series B non-participating preferred stock that have been placed in escrow to secure our indemnification obligations under the agreement. In April 2015, we received an additional $57.3 of cash from an adjustment to the sale price as a result of the preliminary determination of the working capital delivered, and in September 2015 we received $3.0 of cash from the final working capital adjustment. Transaction costs associated with the sale were $16.4 . The majority of these costs consisted of consulting and professional fees associated with preparing for and executing the transaction. On March 1, 2015, we finalized the sale of our extrusions business to Sankyo Tateyama (“Sankyo”), a Japanese building products and extrusions manufacturer. This business includes substantially all of the operations and assets previously reported in the Extrusions segment. Upon closing, we received approximately €29.6 (or equivalent to approximately $33.5 ) of cash, and in August 2015, we received €4.4 (or equivalent to approximately $4.9 ) for the final working capital adjustment. Transaction costs associated with the sale were $5.1 . The majority of these costs consisted of consulting and professional fees associated with preparing for and executing the transaction. The operations of the recycling and specification alloys and the extrusions businesses have been reported as discontinued operations in the Consolidated Statements of Comprehensive (Loss) Income for the three and nine months ended September 30, 2015 and 2014 and the assets and liabilities are reported in current and long-term assets and liabilities of discontinued operations in the Consolidated Balance Sheet as of December 31, 2014. The results of the prior periods have been restated to reflect this presentation. The preferred shares held in escrow as consideration for the sale of the recycling and specification alloys business were recorded on the transaction date at their estimated fair value of $19.3 . The fair value of these shares, which is included in “Other long-term assets” on the Consolidated Balance Sheet, represents a level 3 fair value measurement, and was estimated using a lattice model based on the expected time to maturity, cash flows of the preferred stock and an estimated yield using available market data. The following table reconciles the major classes of assets and liabilities of discontinued operations of the recycling and specification alloys and extrusions businesses to the assets held for sale that are presented separately in the Consolidated Balance Sheet: December 31, 2014 Cash and cash equivalents $ 7.4 Accounts receivable, net 143.7 Inventories 225.2 Other assets 9.3 Total Current Assets $ 385.6 Property, plant and equipment, net $ 251.6 Other long-term assets 29.4 Loss recognized on classification as held for sale (11.2 ) Total Long-Term Assets $ 269.8 Accounts payable $ 139.6 Accrued and other liabilities 46.2 Current portion of long-term debt 10.1 Total Current Liabilities $ 195.9 Accrued pension benefits 117.5 Other long-term liabilities 38.9 Total Long-Term Liabilities $ 156.4 The following table reconciles the major line items constituting “(Loss) income from discontinued operations, net of tax” presented in the Consolidated Statements of Comprehensive (Loss) Income: For the three months ended For the nine months ended September 30, 2015 September 30, 2014 September 30, 2015 September 30, 2014 Revenues $ — $ 468.5 $ 287.7 $ 1,408.5 Cost of sales — 433.3 270.0 1,319.0 Selling, general and administrative expenses — 14.6 8.7 43.2 Other operating expense (income), net — 1.1 (2.6 ) 3.5 Operating income from discontinued operations — 19.5 11.6 42.8 Net (loss) gain on sale of discontinued operations (0.4 ) — 196.9 — Other income, net — — — 0.3 (Loss) income from discontinued operations before income taxes (0.4 ) 19.5 208.5 42.5 Provision for income taxes 4.0 1.3 93.5 12.0 (Loss) income from discontinued operations, net of tax $ (4.4 ) $ 18.2 $ 115.0 $ 30.5 The following table provides the depreciation, capital expenditures and significant operating noncash items of the discontinued operations that are included in the Consolidated Statements of Cash Flows: For the nine months ended September 30, 2015 September 30, 2014 Depreciation $ — $ 24.4 Payments for property, plant and equipment 15.5 25.4 Net gain on sale of discontinued operations 196.9 — We have entered into contractual arrangements with the disposed entities for the purchase and sale of products in the normal course of business. Subsequent to the finalization of the transactions, we have recorded sales of $51.8 to the disposed entities and purchases of $15.1 from the disposed entities. Such transactions will continue as long as commercially beneficial to the parties involved. In addition, transition services agreements were entered into with each of the disposed entities upon the completion of the transactions. Under these agreements, we continue to provide support services such as information technology, human resources, accounting and other services to the disposed entities. Such services will continue for a period of up to two years, or until the disposed entities no longer have need for such services. Subsequent to the closing of the transactions, we invoiced $8.4 to the disposed entities under the transition services agreements during the nine months ended September 30, 2015 . This amount is reflected as a reduction of expense in the Consolidated Statements of Comprehensive (Loss) Income.

Condensed Consolidating Financi

Condensed Consolidating Financial Statements	9 Months Ended
	Sep. 30, 2015
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Condensed Consolidating Financial Statements	CONDENSED CONSOLIDATING FINANCIAL STATEMENTS Aleris Corporation, the direct parent of Aleris International, and certain of its subsidiaries (collectively, the “Guarantor Subsidiaries”) are guarantors of the indebtedness under the Senior Notes. Aleris Corporation and each of the Guarantor Subsidiaries have fully and unconditionally guaranteed (subject, in the case of the Guarantor Subsidiaries, to customary release provisions as described below), on a joint and several basis, to pay principal and interest related to the Senior Notes and Aleris International and each of the Guarantor Subsidiaries are directly or indirectly 100% owned subsidiaries of Aleris Corporation. For purposes of complying with the reporting requirements of Aleris International and the Guarantor Subsidiaries, presented below are condensed consolidating financial statements of Aleris Corporation, Aleris International, the Guarantor Subsidiaries, and those other subsidiaries of Aleris Corporation that are not guaranteeing the indebtedness under the Senior Notes (the “Non-Guarantor Subsidiaries”). The condensed consolidating balance sheets are presented as of September 30, 2015 and December 31, 2014 . The condensed consolidating statements of comprehensive (loss) income are presented for the three and nine months ended September 30, 2015 and 2014 . The condensed consolidating statements of cash flows are presented for the nine months ended September 30, 2015 and 2014 . The guarantee of a Guarantor Subsidiary will be automatically and unconditionally released and discharged in the event of: ▪ any sale of the Guarantor Subsidiary or of all or substantially all of its assets; ▪ a Guarantor Subsidiary being designated as an “unrestricted subsidiary” in accordance with the indentures governing the Senior Notes; ▪ the release or discharge of a Guarantor Subsidiary from its guarantee under the 2015 ABL Facility or other indebtedness that resulted in the obligation of the Guarantor Subsidiary under the indentures governing the Senior Notes; and ▪ the requirements for legal defeasance or covenant defeasance or discharge of the indentures governing the Senior Notes having been satisfied. Upon the completion of the sale of the recycling and specification alloys business on February 27, 2015, the guarantees of the Guarantor Subsidiaries that were sold were automatically and unconditionally released. As of September 30, 2015 Aleris Corporation (Parent) Aleris International, Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated ASSETS Current Assets Cash and cash equivalents $ — $ 44.8 $ — $ 121.5 $ (1.5 ) $ 164.8 Accounts receivable, net — 2.6 124.5 171.3 — 298.4 Inventories — — 184.1 316.0 — 500.1 Deferred income taxes — — 19.5 8.6 — 28.1 Prepaid expenses and other current assets — 3.0 17.1 12.2 — 32.3 Intercompany receivables — 385.4 262.1 17.5 (665.0 ) — Total Current Assets — 435.8 607.3 647.1 (666.5 ) 1,023.7 Property, plant and equipment, net — — 483.3 552.8 — 1,036.1 Intangible assets, net — — 23.5 15.9 — 39.4 Deferred income taxes — — 15.8 130.9 — 146.7 Other long-term assets — 18.5 6.4 66.5 — 91.4 Intercompany receivables 5.2 4.8 — — (10.0 ) — Investments in subsidiaries 349.8 1,204.7 2.7 — (1,557.2 ) — Total Assets $ 355.0 $ 1,663.8 $ 1,139.0 $ 1,413.2 $ (2,233.7 ) $ 2,337.3 LIABILITIES AND STOCKHOLDERS’ EQUITY Current Liabilities Accounts payable $ — $ 3.7 $ 137.6 $ 140.4 $ (1.5 ) $ 280.2 Accrued liabilities — 20.9 105.9 103.0 — 229.8 Deferred income taxes — — — 6.2 — 6.2 Current portion of long-term debt — — 0.4 13.1 — 13.5 Intercompany payables — 377.6 258.8 33.8 (670.2 ) — Total Current Liabilities — 402.2 502.7 296.5 (671.7 ) 529.7 Long-term debt — 911.5 — 203.5 — 1,115.0 Deferred income taxes — — 54.8 9.1 — 63.9 Accrued pension benefits — — 50.5 113.5 — 164.0 Accrued postretirement benefits — — 44.6 — — 44.6 Other long-term liabilities — — 36.4 33.6 — 70.0 Intercompany payables 4.8 — — — (4.8 ) — Total Long-Term Liabilities 4.8 911.5 186.3 359.7 (4.8 ) 1,457.5 Total equity 350.2 350.1 450.0 757.0 (1,557.2 ) 350.1 Total Liabilities and Equity $ 355.0 $ 1,663.8 $ 1,139.0 $ 1,413.2 $ (2,233.7 ) $ 2,337.3 As of December 31, 2014 Aleris Corporation (Parent) Aleris International, Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated ASSETS Current Assets Cash and cash equivalents $ — $ — $ — $ 28.6 $ — $ 28.6 Accounts receivable, net — — 122.8 148.2 — 271.0 Inventories — — 272.6 355.3 — 627.9 Deferred income taxes — — 19.5 8.6 — 28.1 Prepaid expenses and other current assets — 0.6 14.8 29.5 — 44.9 Intercompany receivables — 86.4 65.4 27.6 (179.4 ) — Assets of discontinued operations - current — — 131.1 254.5 — 385.6 Total Current Assets — 87.0 626.2 852.3 (179.4 ) 1,386.1 Property, plant and equipment, net — — 336.6 606.3 — 942.9 Intangible assets, net — — 28.1 15.9 — 44.0 Deferred income taxes — — 15.8 130.9 — 146.7 Other long-term assets — 8.3 7.0 57.1 — 72.4 Intercompany receivables — 4.3 — — (4.3 ) — Investments in subsidiaries 296.9 1,566.4 10.4 — (1,873.7 ) — Assets of discontinued operations - non-current — — 107.5 162.3 — 269.8 Total Assets $ 296.9 $ 1,666.0 $ 1,131.6 $ 1,824.8 $ (2,057.4 ) $ 2,861.9 LIABILITIES AND STOCKHOLDERS’ EQUITY Current Liabilities Accounts payable $ — $ 10.4 $ 131.2 $ 126.6 $ — $ 268.2 Accrued liabilities — 32.7 73.1 77.5 — 183.3 Deferred income taxes — — — 6.2 — 6.2 Current portion of long-term debt — — 0.3 3.0 — 3.3 Intercompany payables — 62.9 89.7 26.8 (179.4 ) — Liabilities of discontinued operations - current — — 71.1 124.8 — 195.9 Total Current Liabilities — 106.0 365.4 364.9 (179.4 ) 656.9 Long-term debt — 1,257.4 0.2 217.3 — 1,474.9 Deferred income taxes — — — 0.4 — 0.4 Accrued pension benefits — — 57.4 121.3 — 178.7 Accrued postretirement benefits — — 46.4 — — 46.4 Other long-term liabilities — — 14.8 34.4 — 49.2 Intercompany payables 4.3 — — — (4.3 ) — Liabilities of discontinued operations - non-current — — 18.9 137.5 — 156.4 Total Long-Term Liabilities 4.3 1,257.4 137.7 510.9 (4.3 ) 1,906.0 Redeemable noncontrolling interest — 5.7 — — — 5.7 Total equity 292.6 296.9 628.5 948.3 (1,873.7 ) 292.6 Noncontrolling interest — — — 0.7 — 0.7 Total Liabilities and Equity $ 296.9 $ 1,666.0 $ 1,131.6 $ 1,824.8 $ (2,057.4 ) $ 2,861.9 For the three months ended September 30, 2015 Aleris Corporation (Parent) Aleris International, Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Revenues $ — $ — $ 405.9 $ 362.4 $ (7.6 ) $ 760.7 Cost of sales — — 383.0 327.4 (7.6 ) 702.8 Gross profit — — 22.9 35.0 — 57.9 Selling, general and administrative expenses — 0.8 23.0 21.1 — 44.9 Restructuring charges 0.2 0.8 1.0 Gains on derivative financial instruments — — 1.0 1.0 — 2.0 Other operating expense, net — — 0.1 0.5 — 0.6 Operating (loss) income — (0.8 ) (1.4 ) 11.6 — 9.4 Interest expense, net — 19.4 4.2 — 23.6 Other (income) expense, net — (3.1 ) 3.6 7.3 — 7.8 Equity in net loss of affiliates 25.4 30.3 0.3 — (56.0 ) — (Loss) income from continuing operations before income taxes (25.4 ) (28.0 ) (24.7 ) 0.1 56.0 (22.0 ) (Benefit from) provision for income taxes — — (4.4 ) 3.4 — (1.0 ) (Loss) income from continuing operations (25.4 ) (28.0 ) (20.3 ) (3.3 ) 56.0 (21.0 ) Income (loss) from discontinued operations, net of tax — 2.6 (3.6 ) (3.4 ) — (4.4 ) Net loss (25.4 ) (25.4 ) (23.9 ) (6.7 ) 56.0 (25.4 ) Net income attributable to noncontrolling interest — — — — — — Net loss attributable to Aleris Corporation $ (25.4 ) $ (25.4 ) $ (23.9 ) $ (6.7 ) $ 56.0 $ (25.4 ) Comprehensive (loss) income $ (19.7 ) $ (19.6 ) $ (22.9 ) $ (1.9 ) $ 44.4 $ (19.7 ) Comprehensive income attributable to noncontrolling interest — — — — — — Comprehensive (loss) income attributable to Aleris Corporation $ (19.7 ) $ (19.6 ) $ (22.9 ) $ (1.9 ) $ 44.4 $ (19.7 ) For the nine months ended September 30, 2015 Aleris Corporation (Parent) Aleris International, Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Revenues $ — $ — $ 1,223.8 $ 1,074.0 $ (17.0 ) $ 2,280.8 Cost of sales — — 1,151.1 974.9 (17.0 ) 2,109.0 Gross profit — — 72.7 99.1 — 171.8 Selling, general and administrative expenses — 6.2 75.5 77.0 — 158.7 Restructuring charges — — 3.9 4.8 — 8.7 (Gains) losses on derivative financial instruments — — (3.5 ) 5.9 — 2.4 Other operating expense, net — — 1.2 0.7 — 1.9 Operating loss — (6.2 ) (4.4 ) 10.7 — 0.1 Interest expense, net — — 61.6 13.1 — 74.7 Other (income) expense, net — (5.0 ) 3.7 (3.8 ) — (5.1 ) Equity in net (earnings) loss of affiliates (61.4 ) 115.0 (1.3 ) — (52.3 ) — Income (loss) from continuing operations before income taxes 61.4 (116.2 ) (68.4 ) 1.4 52.3 (69.5 ) (Benefit from) provision for income taxes — — (28.3 ) 12.3 — (16.0 ) Income (loss) from continuing operations 61.4 (116.2 ) (40.1 ) (10.9 ) 52.3 (53.5 ) Income (loss) from discontinued operations, net of tax — 177.6 (100.7 ) 38.1 — 115.0 Net income (loss) 61.4 61.4 (140.8 ) 27.2 52.3 61.5 Net income attributable to noncontrolling interest — — — 0.1 — 0.1 Net income (loss) attributable to Aleris Corporation $ 61.4 $ 61.4 $ (140.8 ) $ 27.1 $ 52.3 $ 61.4 Comprehensive income (loss) $ 48.7 $ 48.8 $ (141.6 ) $ 15.5 $ 77.4 $ 48.8 Comprehensive income attributable to noncontrolling interest — — — 0.1 — 0.1 Comprehensive income (loss) attributable to Aleris Corporation $ 48.7 $ 48.8 $ (141.6 ) $ 15.4 $ 77.4 $ 48.7 For the three months ended September 30, 2014 Aleris Corporation (Parent) Aleris International, Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Revenues $ — $ — $ 466.9 $ 371.8 $ (29.7 ) $ 809.0 Cost of sales — — 437.7 316.4 (29.7 ) 724.4 Gross profit — — 29.2 55.4 — 84.6 Selling, general and administrative expenses — — 29.7 23.9 — 53.6 Restructuring charges — — 0.2 0.4 — 0.6 Losses on derivative financial instruments — — 1.7 8.3 — 10.0 Other operating expense, net — — 0.1 — — 0.1 Operating (loss) income — — (2.5 ) 22.8 — 20.3 Interest expense, net — — 23.3 4.0 — 27.3 Other (income) expense, net — — (2.0 ) (10.2 ) — (12.2 ) Equity in net loss (earnings) of affiliates (26.4 ) (26.4 ) (0.2 ) — 53.0 — (Loss) income from continuing operations before income taxes 26.4 26.4 (23.6 ) 29.0 (53.0 ) 5.2 Provision for income taxes — — — (3.3 ) — (3.3 ) (Loss) income from continuing operations 26.4 26.4 (23.6 ) 32.3 (53.0 ) 8.5 Income (loss) from discontinued operations, net of tax — — 12.0 6.2 — 18.2 Net (loss) income 26.4 26.4 (11.6 ) 38.5 (53.0 ) 26.7 Net income attributable to noncontrolling interest — — — 0.2 — 0.2 Net (loss) income attributable to Aleris Corporation $ 26.4 $ 26.4 $ (11.6 ) $ 38.3 $ (53.0 ) $ 26.5 Comprehensive (loss) income $ (27.1 ) $ (27.1 ) $ (11.2 ) $ (14.7 ) $ 53.2 $ (26.9 ) Comprehensive income attributable to noncontrolling interest — — — 0.2 — 0.2 Comprehensive (loss) income attributable to Aleris Corporation $ (27.1 ) $ (27.1 ) $ (11.2 ) $ (14.9 ) $ 53.2 $ (27.1 ) For the nine months ended September 30, 2014 Aleris Corporation (Parent) Aleris International, Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Revenues $ — $ — $ 1,151.2 $ 1,062.7 $ (64.6 ) $ 2,149.3 Cost of sales — — 1,082.8 935.5 (64.6 ) 1,953.7 Gross profit — — 68.4 127.2 — 195.6 Selling, general and administrative expenses — 0.2 86.5 69.2 — 155.9 Restructuring charges — — 0.6 0.9 — 1.5 Losses on derivative financial instruments — — 0.2 11.5 — 11.7 Other operating expense (income), net — — 0.4 (0.3 ) — 0.1 Operating (loss) income — (0.2 ) (19.3 ) 45.9 — 26.4 Interest expense, net — — 68.7 11.7 — 80.4 Other income, net — — (7.3 ) (5.8 ) — (13.1 ) Equity in net loss (earnings) of affiliates 8.6 8.4 (1.0 ) — (16.0 ) — (Loss) income from continuing operations before income taxes (8.6 ) (8.6 ) (79.7 ) 40.0 16.0 (40.9 ) Provision for income taxes — — — (2.7 ) — (2.7 ) (Loss) income from continuing operations (8.6 ) (8.6 ) (79.7 ) 42.7 16.0 (38.2 ) Income from discontinued operations, net of tax — — 23.0 7.5 — 30.5 Net (loss) income (8.6 ) (8.6 ) (56.7 ) 50.2 16.0 (7.7 ) Net income attributable to noncontrolling interest — — — 0.9 — 0.9 Net (loss) income attributable to Aleris Corporation $ (8.6 ) $ (8.6 ) $ (56.7 ) $ 49.3 $ 16.0 $ (8.6 ) Comprehensive loss $ (67.8 ) $ (67.8 ) $ (56.9 ) $ (8.5 ) $ 134.1 $ (66.9 ) Comprehensive income attributable to noncontrolling interest — — — 0.9 — 0.9 Comprehensive loss attributable to Aleris Corporation $ (67.8 ) $ (67.8 ) $ (56.9 ) $ (9.4 ) $ 134.1 $ (67.8 ) For the nine months ended September 30, 2015 Aleris Corporation (Parent) Aleris International, Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Net cash provided (used) by operating activities $ 0.6 $ 76.1 $ 162.7 $ 43.4 $ (211.4 ) $ 71.4 Investing activities Payments for property, plant and equipment — — (133.5 ) (41.6 ) — (175.1 ) Proceeds from the sale of businesses, net of cash transferred — 319.4 4.2 263.5 — 587.1 Disbursements of intercompany loans — (46.7 ) (0.2 ) (20.3 ) 67.2 — Repayments from intercompany loans — 31.1 3.8 34.3 (69.2 ) — Equity contributions in subsidiaries — (137.5 ) (1.1 ) 138.6 — Return of investment in subsidiaries — 171.3 0.6 (171.9 ) — Other — (1.1 ) (0.1 ) 1.4 — 0.2 Net cash provided (used) by investing activities — 336.5 (126.3 ) 237.3 (35.3 ) 412.2 Financing activities Proceeds from the ABL facilities — 111.0 — 40.0 — 151.0 Payments on the ABL facilities — (335.0 ) — (40.0 ) — (375.0 ) Payments on the Senior Notes — (125.0 ) — — — (125.0 ) Proceeds from Zhenjiang term loans — Proceeds from Zhenjiang revolver — — — 8.5 — 8.5 Payments on the Zhenjiang revolver — — — (5.6 ) — (5.6 ) Net proceeds from (payments on) other long-term debt — 0.1 (0.3 ) (0.2 ) — (0.4 ) Debt issuance costs — (4.4 ) — — — (4.4 ) Dividends paid — — (173.5 ) (208.3 ) 381.8 — Proceeds from intercompany loans — 20.3 — 46.9 (67.2 ) — Repayments on intercompany loans — (34.3 ) — (34.9 ) 69.2 — Proceeds from intercompany equity contributions — 137.4 1.2 (138.6 ) — Other (0.6 ) (0.5 ) — — — (1.1 ) Net cash used by financing activities (0.6 ) (367.8 ) (36.4 ) (192.4 ) 245.2 (352.0 ) Effect of exchange rate differences on cash and cash equivalents — — — (2.8 ) — (2.8 ) Net increase in cash and cash equivalents — 44.8 — 85.5 (1.5 ) 128.8 Cash and cash equivalents at beginning of period — — — 36.0 — 36.0 Cash and cash equivalents at end of period $ — $ 44.8 $ — $ 121.5 $ (1.5 ) $ 164.8 For the nine months ended September 30, 2014 Aleris Corporation (Parent) Aleris International, Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Net cash provided (used) by operating activities $ 1.0 $ (140.3 ) $ 47.0 $ 53.8 $ 1.8 $ (36.7 ) Investing activities Payments for property, plant and equipment — — (47.3 ) (61.7 ) — (109.0 ) Purchase of a business — — (77.8 ) (29.6 ) — (107.4 ) Disbursements of intercompany loans — (15.0 ) (10.8 ) (87.0 ) 112.8 — Repayments from intercompany loans — 15.0 12.0 50.0 (77.0 ) — Equity contributions in subsidiaries — (107.4 ) — — 107.4 — Other — — 1.7 6.4 — 8.1 Net cash used by investing activities — (107.4 ) (122.2 ) (121.9 ) 143.2 (208.3 ) Financing activities Proceeds from the ABL facility — 322.0 — 15.0 — 337.0 Payments on the ABL facility — (114.0 ) — (15.0 ) — (129.0 ) Proceeds from Zhenjiang revolver — — — 19.8 — 19.8 Net (payments on) proceeds from other long-term debt — — (0.4 ) 0.8 — 0.4 Dividends paid — — — (0.7 ) 0.7 — Proceeds from intercompany loans — 82.0 5.0 25.8 (112.8 ) — Repayments on intercompany loans — (45.0 ) (5.0 ) (27.0 ) 77.0 — Proceeds from intercompany equity contributions — — 77.8 29.6 (107.4 ) — Other (1.0 ) (0.6 ) — (0.2 ) — (1.8 ) Net cash (used) provided by financing activities (1.0 ) 244.4 77.4 48.1 (142.5 ) 226.4 Effect of exchange rate differences on cash and cash equivalents — — — (3.7 ) — (3.7 ) Net (decrease) increase in cash and cash equivalents — (3.3 ) 2.2 (23.7 ) 2.5 (22.3 ) Cash and cash equivalents at beginning of period — 3.7 — 58.9 (2.5 ) 60.1 Cash and cash equivalents at end of period — 0.4 2.2 35.2 — 37.8 Cash and cash equivalents included within assets of discontinued operations - current — 1.9 (1.8 ) (12.4 ) — (12.3 ) Cash and cash equivalents of continuing operations $ — $ 2.3 $ 0.4 $ 22.8 $ — $ 25.5

Basis Of Presentation and Rec19

Basis Of Presentation and Recent Accounting Pronouncements (Policies)	9 Months Ended
	Sep. 30, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	The accompanying unaudited Consolidated Financial Statements have been prepared in accordance with generally accepted accounting principles in the United States (“GAAP”) for interim financial information. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included.

Inventories (Tables)

Inventories (Tables)	9 Months Ended
	Sep. 30, 2015
Inventory Disclosure [Abstract]
Schedule of Inventory, Current	The components of our “Inventories” as of September 30, 2015 and December 31, 2014 are as follows: September 30, 2015 December 31, 2014 Raw materials $ 143.8 $ 217.3 Work in process 191.4 228.2 Finished goods 139.1 155.9 Supplies 25.8 26.5 Total inventories of continuing operations 500.1 627.9 Total inventories included within assets of discontinued operations - current — 225.2 Total inventories $ 500.1 $ 853.1

Long-Term Debt (Tables)

Long-Term Debt (Tables)	9 Months Ended
	Sep. 30, 2015
Debt Disclosure [Abstract]
Schedule of Debt	Our debt as of September 30, 2015 and December 31, 2014 is summarized as follows: September 30, 2015 December 31, 2014 ABL facilities $ — $ 224.0 7 5/8% Senior Notes due 2018, net of discount of $2.9 and $4.5 at September 30, 2015 and December 31, 2014, respectively 432.0 495.5 7 7/8% Senior Notes due 2020, net of discount of $4.9 and $6.4 at September 30, 2015 and December 31, 2014, respectively 435.2 493.6 Exchangeable notes, net of discount of $0.5 and $0.6 at September 30, 2015 and December 31, 2014, respectively 44.3 44.2 Zhenjiang term loans, net of discount of $0.8 and $0.9 at September 30, 2015 and December 31, 2014, respectively 185.7 191.5 Zhenjiang revolver, net of discount of $0.2 and $0.2 at September 30, 2015 and December 31, 2014, respectively 26.1 24.2 Other 5.2 5.2 Total debt of continuing operations 1,128.5 1,478.2 Less: Current portion of long-term debt 13.5 3.3 Total long-term debt of continuing operations $ 1,115.0 $ 1,474.9

Stockholders' Equity and Rede22

Stockholders' Equity and Redeemable Noncontrolling Interest (Tables)	9 Months Ended
	Sep. 30, 2015
Stockholders' Equity Note [Abstract]
Schedule of Stockholders Equity	The following table summarizes the activity within stockholders’ equity and redeemable noncontrolling interest for the nine months ended September 30, 2015 : Aleris Corporation equity Noncontrolling interest Total equity Redeemable noncontrolling interest Total equity at January 1, 2015 $ 292.6 $ 0.7 $ 293.3 $ 5.7 Net income 61.4 0.1 61.5 — Other comprehensive loss (12.7 ) — (12.7 ) — Stock-based compensation activity 3.2 — 3.2 — Conversion of Aleris International preferred stock to common stock 5.6 — 5.6 (5.6 ) Other — (0.8 ) (0.8 ) (0.1 ) Total equity at September 30, 2015 $ 350.1 $ — $ 350.1 $ —
Changes in the Number of Outstanding Common Shares	The following table shows changes in the number of our outstanding shares of common stock: Outstanding shares of common stock Balance at January 1, 2015 31,281,513 Issuance associated with options exercised 29,624 Issuance associated with vested restricted stock units 79,524 Issuance upon conversion of Aleris International preferred stock 304,549 Balance at September 30, 2015 31,695,210

Accumulated Other Comprehensi23

Accumulated Other Comprehensive Loss (Tables)	9 Months Ended
	Sep. 30, 2015
Accumulated Other Comprehesive Income [Abstract]
Schedule of Accumulated Other Comprehensive Income	The following table summarizes the activity within accumulated other comprehensive loss for the nine months ended September 30, 2015 : Currency translation Pension and other postretirement Total Balance at January 1, 2015 $ (47.2 ) $ (113.7 ) $ (160.9 ) Current period currency translation adjustments (66.5 ) 4.7 (61.8 ) Reclassification into earnings due to the sale of businesses 16.4 28.8 45.2 Amortization of net actuarial losses, net of tax — 3.9 3.9 Balance at September 30, 2015 $ (97.3 ) $ (76.3 ) $ (173.6 )
Schedule of Amounts Recognized in Other Comprehensive Income	A summary of reclassifications out of accumulated other comprehensive loss for the nine months ended September 30, 2015 is provided below: Description of reclassifications out of accumulated other comprehensive loss Amount reclassified Reclassification into earnings due to the sale of businesses $ (45.2 ) (a) Amortization of net actuarial losses (4.6 ) (b) Deferred tax benefit on pension and other postretirement liability adjustments 0.7 Losses reclassified into earnings, net of tax $ (49.1 ) (a) This reclassification out of accumulated other comprehensive loss is included in “(Loss) income from discontinued operations, net of tax” in the Consolidated Statements of Comprehensive (Loss) Income. (b) This component of accumulated other comprehensive loss is included in the computation of net periodic benefit expense and net postretirement benefit expense (see Note 10, “Employee Benefit Plans,” for additional detail).

Segment Information (Tables)

Segment Information (Tables)	9 Months Ended
	Sep. 30, 2015
Segment Reporting [Abstract]
Reconciliation of Revenue from Segments to Consolidated	The following table shows our revenues and segment income (loss) for the periods presented in our Consolidated Statements of Comprehensive (Loss) Income: Three months ended September 30, 2015 North America Europe Asia Pacific Intra-entity Revenues Total Revenues to external customers $ 405.6 $ 331.4 $ 23.7 $ 760.7 Intra-entity revenues 0.2 8.7 0.8 $ (9.7 ) — Total revenues $ 405.8 $ 340.1 $ 24.5 $ (9.7 ) $ 760.7 Segment income $ 36.4 $ 35.1 $ 0.6 $ 72.1 Three months ended September 30, 2014 North America Europe Asia Pacific Intra-entity Revenues Total Revenues to external customers $ 466.7 $ 328.4 $ 13.9 $ 809.0 Intra-entity revenues 1.3 33.9 1.7 $ (36.9 ) — Total revenues $ 468.0 $ 362.3 $ 15.6 $ (36.9 ) $ 809.0 Segment income $ 26.4 $ 38.1 $ — $ 64.5 Nine months ended September 30, 2015 North America Europe Asia Pacific Intra-entity Revenues Total Revenues to external customers $ 1,225.0 $ 991.3 $ 64.5 $ 2,280.8 Intra-entity revenues 0.9 33.3 4.7 $ (38.9 ) — Total revenues $ 1,225.9 $ 1,024.6 $ 69.2 $ (38.9 ) $ 2,280.8 Segment income (loss) $ 93.0 $ 99.5 $ (1.2 ) $ 191.3 Nine months ended September 30, 2014 North America Europe Asia Pacific Intra-entity Revenues Total Revenues to external customers $ 1,146.0 $ 972.8 $ 30.5 $ 2,149.3 Intra-entity revenues 2.4 96.5 6.3 $ (105.2 ) — Total revenues $ 1,148.4 $ 1,069.3 $ 36.8 $ (105.2 ) $ 2,149.3 Segment income $ 75.8 $ 110.6 $ — $ 186.4
Schedule of Segment Reporting Information, by Segment	The following table reconciles total segment income to “ (Loss) income from continuing operations before income taxes ” as reported in our Consolidated Statements of Comprehensive (Loss) Income: For the three months ended For the nine months ended September 30, 2015 September 30, 2014 September 30, 2015 September 30, 2014 Total segment income $ 72.1 $ 64.5 $ 191.3 $ 186.4 Unallocated amounts: Depreciation and amortization (27.7 ) (33.6 ) (92.9 ) (87.8 ) Other corporate general and administrative expenses (8.0 ) (16.5 ) (41.1 ) (49.1 ) Restructuring charges (1.0 ) (0.6 ) (8.7 ) (1.5 ) Interest expense, net (23.6 ) (27.3 ) (74.7 ) (80.4 ) Unallocated (losses) gains on derivative financial instruments (21.5 ) 13.7 (26.0 ) 4.0 Unallocated currency exchange (losses) gains (4.8 ) 8.5 3.4 7.7 Start-up costs (6.8 ) (3.5 ) (14.6 ) (19.8 ) Other expense, net (0.7 ) — (6.2 ) (0.4 ) (Loss) income from continuing operations before income taxes $ (22.0 ) $ 5.2 $ (69.5 ) $ (40.9 )
Reconciliation of Assets from Segment to Consolidated	The following table shows our reportable segment assets as of September 30, 2015 and December 31, 2014 : September 30, 2015 December 31, 2014 Assets North America $ 828.8 $ 790.9 Europe 675.5 701.9 Asia Pacific 410.3 433.3 Assets of discontinued operations — 655.4 Unallocated assets 422.7 280.4 Total consolidated assets $ 2,337.3 $ 2,861.9

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	9 Months Ended
	Sep. 30, 2015
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]
Schedule of Net Benefit Costs	Defined Benefit Pension Plans The components of the net periodic benefit expense are as follows: U.S. pension benefits For the three months ended For the nine months ended September 30, 2015 September 30, 2014 September 30, 2015 September 30, 2014 Service cost $ 1.0 $ 0.8 $ 2.9 $ 2.3 Interest cost 1.8 1.8 5.3 5.4 Amortization of net actuarial losses 0.5 — 1.4 — Amortization of prior service cost — — 0.2 — Expected return on plan assets (2.7 ) (2.6 ) (8.1 ) (7.8 ) Net periodic benefit expense $ 0.6 $ — $ 1.7 $ (0.1 ) Non U.S. pension benefits For the three months ended For the nine months ended September 30, 2015 September 30, 2014 September 30, 2015 September 30, 2014 Service cost $ 0.7 $ 1.0 $ 2.5 $ 2.9 Interest cost 0.7 1.9 2.4 5.8 Amortization of net actuarial losses 0.7 0.3 2.6 1.0 Expected return on plan assets — — — (0.1 ) Net periodic benefit expense 2.1 3.2 7.5 9.6 Net periodic benefit expense reclassified to income from discontinued operations — (1.5 ) (1.2 ) (4.6 ) Net periodic benefit expense included in continuing operations $ 2.1 $ 1.7 $ 6.3 $ 5.0 Other Postretirement Benefit Plans The components of net postretirement benefit expense are as follows: For the three months ended For the nine months ended September 30, 2015 September 30, 2014 September 30, 2015 September 30, 2014 Service cost $ — $ — $ 0.1 $ 0.1 Interest cost 0.4 0.5 1.3 1.3 Amortization of net actuarial losses (gains) 0.1 (0.1 ) 0.4 (0.3 ) Net postretirement benefit expense $ 0.5 $ 0.4 $ 1.8 $ 1.1

Derivative And Other Financia26

Derivative And Other Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments	The amounts shown in the table below represent the gross amounts of recognized assets and liabilities, the amounts offset in the Consolidated Balance Sheet and the net amounts of assets and liabilities presented therein. As of September 30, 2015 and December 31, 2014 , there were no amounts subject to an enforceable master netting arrangement or similar agreement that have not been offset in the Consolidated Balance Sheet. Fair Value of Derivatives as of September 30, 2015 December 31, 2014 Derivatives by Type Asset Liability Asset Liability Metal $ 12.7 $ (31.5 ) $ 28.6 $ (21.4 ) Energy — (0.6 ) — (3.4 ) Currency 0.2 (0.3 ) — — Total 12.9 (32.4 ) 28.6 (24.8 ) Effect of counterparty netting (11.2 ) 11.2 (19.6 ) 19.6 Effect of cash collateral — 3.7 — — Net derivatives as classified in the balance sheet $ 1.7 $ (17.5 ) $ 9.0 $ (5.2 )
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value	The fair value of our derivative financial instruments at September 30, 2015 and December 31, 2014 are recorded in the Consolidated Balance Sheet as follows: Asset Derivatives Balance Sheet Location September 30, 2015 December 31, 2014 Metal Prepaid expenses and other current assets $ 1.7 $ 8.7 Other long-term assets — 0.3 Total $ 1.7 $ 9.0 Liability Derivatives Balance Sheet Location September 30, 2015 December 31, 2014 Metal Accrued liabilities $ 13.9 $ 0.5 Other long-term liabilities 2.9 1.3 Energy Accrued liabilities 0.6 3.4 Currency Other long-term liabilities 0.1 — Total $ 17.5 $ 5.2
Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance	Realized (gains) losses on derivative financial instruments totaled the following: For the three months ended For the nine months ended September 30, 2015 September 30, 2014 September 30, 2015 September 30, 2014 Metal $ (20.0 ) $ 23.5 $ (25.9 ) $ 16.9 Energy 0.6 0.2 2.4 (1.2 ) Currency 0.1 — 0.2 —
Schedule of Fair Value Measurements, Nonrecurring	The carrying amount, fair values and level in the fair value hierarchy of our other financial instruments at September 30, 2015 and December 31, 2014 are as follows: September 30, 2015 December 31, 2014 Carrying Amount Fair Value Level in the Fair Value Hierarchy Carrying Amount Fair Value Level in the Fair Value Hierarchy Cash and cash equivalents $ 164.8 $ 164.8 Level 1 $ 28.6 $ 28.6 Level 1 Receivables held in escrow 24.3 24.3 Level 3 — — n/a ABL facilities — — Level 2 224.0 224.0 Level 2 Exchangeable notes 44.3 63.3 Level 3 44.2 63.3 Level 3 7 5 / 8 % senior notes 432.0 421.9 Level 1 495.5 508.0 Level 1 7 7 / 8 % senior notes 435.2 424.7 Level 1 493.6 497.5 Level 1 Zhenjiang term loans 185.7 186.5 Level 3 191.5 192.4 Level 3 Zhenjiang revolver 26.1 26.3 Level 3 24.2 24.4 Level 3

Discontinued Operations (Tables

Discontinued Operations (Tables)	9 Months Ended
	Sep. 30, 2015
Discontinued Operations and Disposal Groups [Abstract]
Schedule of Discontinued Operations	The following table reconciles the major classes of assets and liabilities of discontinued operations of the recycling and specification alloys and extrusions businesses to the assets held for sale that are presented separately in the Consolidated Balance Sheet: December 31, 2014 Cash and cash equivalents $ 7.4 Accounts receivable, net 143.7 Inventories 225.2 Other assets 9.3 Total Current Assets $ 385.6 Property, plant and equipment, net $ 251.6 Other long-term assets 29.4 Loss recognized on classification as held for sale (11.2 ) Total Long-Term Assets $ 269.8 Accounts payable $ 139.6 Accrued and other liabilities 46.2 Current portion of long-term debt 10.1 Total Current Liabilities $ 195.9 Accrued pension benefits 117.5 Other long-term liabilities 38.9 Total Long-Term Liabilities $ 156.4 The following table provides the depreciation, capital expenditures and significant operating noncash items of the discontinued operations that are included in the Consolidated Statements of Cash Flows: For the nine months ended September 30, 2015 September 30, 2014 Depreciation $ — $ 24.4 Payments for property, plant and equipment 15.5 25.4 Net gain on sale of discontinued operations 196.9 — The following table reconciles the major line items constituting “(Loss) income from discontinued operations, net of tax” presented in the Consolidated Statements of Comprehensive (Loss) Income: For the three months ended For the nine months ended September 30, 2015 September 30, 2014 September 30, 2015 September 30, 2014 Revenues $ — $ 468.5 $ 287.7 $ 1,408.5 Cost of sales — 433.3 270.0 1,319.0 Selling, general and administrative expenses — 14.6 8.7 43.2 Other operating expense (income), net — 1.1 (2.6 ) 3.5 Operating income from discontinued operations — 19.5 11.6 42.8 Net (loss) gain on sale of discontinued operations (0.4 ) — 196.9 — Other income, net — — — 0.3 (Loss) income from discontinued operations before income taxes (0.4 ) 19.5 208.5 42.5 Provision for income taxes 4.0 1.3 93.5 12.0 (Loss) income from discontinued operations, net of tax $ (4.4 ) $ 18.2 $ 115.0 $ 30.5

Condensed Consolidating Finan28

Condensed Consolidating Financial Statements (Tables)	9 Months Ended
	Sep. 30, 2015
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Schedule of Condensed Balance Sheet	As of September 30, 2015 Aleris Corporation (Parent) Aleris International, Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated ASSETS Current Assets Cash and cash equivalents $ — $ 44.8 $ — $ 121.5 $ (1.5 ) $ 164.8 Accounts receivable, net — 2.6 124.5 171.3 — 298.4 Inventories — — 184.1 316.0 — 500.1 Deferred income taxes — — 19.5 8.6 — 28.1 Prepaid expenses and other current assets — 3.0 17.1 12.2 — 32.3 Intercompany receivables — 385.4 262.1 17.5 (665.0 ) — Total Current Assets — 435.8 607.3 647.1 (666.5 ) 1,023.7 Property, plant and equipment, net — — 483.3 552.8 — 1,036.1 Intangible assets, net — — 23.5 15.9 — 39.4 Deferred income taxes — — 15.8 130.9 — 146.7 Other long-term assets — 18.5 6.4 66.5 — 91.4 Intercompany receivables 5.2 4.8 — — (10.0 ) — Investments in subsidiaries 349.8 1,204.7 2.7 — (1,557.2 ) — Total Assets $ 355.0 $ 1,663.8 $ 1,139.0 $ 1,413.2 $ (2,233.7 ) $ 2,337.3 LIABILITIES AND STOCKHOLDERS’ EQUITY Current Liabilities Accounts payable $ — $ 3.7 $ 137.6 $ 140.4 $ (1.5 ) $ 280.2 Accrued liabilities — 20.9 105.9 103.0 — 229.8 Deferred income taxes — — — 6.2 — 6.2 Current portion of long-term debt — — 0.4 13.1 — 13.5 Intercompany payables — 377.6 258.8 33.8 (670.2 ) — Total Current Liabilities — 402.2 502.7 296.5 (671.7 ) 529.7 Long-term debt — 911.5 — 203.5 — 1,115.0 Deferred income taxes — — 54.8 9.1 — 63.9 Accrued pension benefits — — 50.5 113.5 — 164.0 Accrued postretirement benefits — — 44.6 — — 44.6 Other long-term liabilities — — 36.4 33.6 — 70.0 Intercompany payables 4.8 — — — (4.8 ) — Total Long-Term Liabilities 4.8 911.5 186.3 359.7 (4.8 ) 1,457.5 Total equity 350.2 350.1 450.0 757.0 (1,557.2 ) 350.1 Total Liabilities and Equity $ 355.0 $ 1,663.8 $ 1,139.0 $ 1,413.2 $ (2,233.7 ) $ 2,337.3 As of December 31, 2014 Aleris Corporation (Parent) Aleris International, Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated ASSETS Current Assets Cash and cash equivalents $ — $ — $ — $ 28.6 $ — $ 28.6 Accounts receivable, net — — 122.8 148.2 — 271.0 Inventories — — 272.6 355.3 — 627.9 Deferred income taxes — — 19.5 8.6 — 28.1 Prepaid expenses and other current assets — 0.6 14.8 29.5 — 44.9 Intercompany receivables — 86.4 65.4 27.6 (179.4 ) — Assets of discontinued operations - current — — 131.1 254.5 — 385.6 Total Current Assets — 87.0 626.2 852.3 (179.4 ) 1,386.1 Property, plant and equipment, net — — 336.6 606.3 — 942.9 Intangible assets, net — — 28.1 15.9 — 44.0 Deferred income taxes — — 15.8 130.9 — 146.7 Other long-term assets — 8.3 7.0 57.1 — 72.4 Intercompany receivables — 4.3 — — (4.3 ) — Investments in subsidiaries 296.9 1,566.4 10.4 — (1,873.7 ) — Assets of discontinued operations - non-current — — 107.5 162.3 — 269.8 Total Assets $ 296.9 $ 1,666.0 $ 1,131.6 $ 1,824.8 $ (2,057.4 ) $ 2,861.9 LIABILITIES AND STOCKHOLDERS’ EQUITY Current Liabilities Accounts payable $ — $ 10.4 $ 131.2 $ 126.6 $ — $ 268.2 Accrued liabilities — 32.7 73.1 77.5 — 183.3 Deferred income taxes — — — 6.2 — 6.2 Current portion of long-term debt — — 0.3 3.0 — 3.3 Intercompany payables — 62.9 89.7 26.8 (179.4 ) — Liabilities of discontinued operations - current — — 71.1 124.8 — 195.9 Total Current Liabilities — 106.0 365.4 364.9 (179.4 ) 656.9 Long-term debt — 1,257.4 0.2 217.3 — 1,474.9 Deferred income taxes — — — 0.4 — 0.4 Accrued pension benefits — — 57.4 121.3 — 178.7 Accrued postretirement benefits — — 46.4 — — 46.4 Other long-term liabilities — — 14.8 34.4 — 49.2 Intercompany payables 4.3 — — — (4.3 ) — Liabilities of discontinued operations - non-current — — 18.9 137.5 — 156.4 Total Long-Term Liabilities 4.3 1,257.4 137.7 510.9 (4.3 ) 1,906.0 Redeemable noncontrolling interest — 5.7 — — — 5.7 Total equity 292.6 296.9 628.5 948.3 (1,873.7 ) 292.6 Noncontrolling interest — — — 0.7 — 0.7 Total Liabilities and Equity $ 296.9 $ 1,666.0 $ 1,131.6 $ 1,824.8 $ (2,057.4 ) $ 2,861.9
Schedule of Condensed Income Statement	For the three months ended September 30, 2015 Aleris Corporation (Parent) Aleris International, Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Revenues $ — $ — $ 405.9 $ 362.4 $ (7.6 ) $ 760.7 Cost of sales — — 383.0 327.4 (7.6 ) 702.8 Gross profit — — 22.9 35.0 — 57.9 Selling, general and administrative expenses — 0.8 23.0 21.1 — 44.9 Restructuring charges 0.2 0.8 1.0 Gains on derivative financial instruments — — 1.0 1.0 — 2.0 Other operating expense, net — — 0.1 0.5 — 0.6 Operating (loss) income — (0.8 ) (1.4 ) 11.6 — 9.4 Interest expense, net — 19.4 4.2 — 23.6 Other (income) expense, net — (3.1 ) 3.6 7.3 — 7.8 Equity in net loss of affiliates 25.4 30.3 0.3 — (56.0 ) — (Loss) income from continuing operations before income taxes (25.4 ) (28.0 ) (24.7 ) 0.1 56.0 (22.0 ) (Benefit from) provision for income taxes — — (4.4 ) 3.4 — (1.0 ) (Loss) income from continuing operations (25.4 ) (28.0 ) (20.3 ) (3.3 ) 56.0 (21.0 ) Income (loss) from discontinued operations, net of tax — 2.6 (3.6 ) (3.4 ) — (4.4 ) Net loss (25.4 ) (25.4 ) (23.9 ) (6.7 ) 56.0 (25.4 ) Net income attributable to noncontrolling interest — — — — — — Net loss attributable to Aleris Corporation $ (25.4 ) $ (25.4 ) $ (23.9 ) $ (6.7 ) $ 56.0 $ (25.4 ) Comprehensive (loss) income $ (19.7 ) $ (19.6 ) $ (22.9 ) $ (1.9 ) $ 44.4 $ (19.7 ) Comprehensive income attributable to noncontrolling interest — — — — — — Comprehensive (loss) income attributable to Aleris Corporation $ (19.7 ) $ (19.6 ) $ (22.9 ) $ (1.9 ) $ 44.4 $ (19.7 ) For the nine months ended September 30, 2015 Aleris Corporation (Parent) Aleris International, Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Revenues $ — $ — $ 1,223.8 $ 1,074.0 $ (17.0 ) $ 2,280.8 Cost of sales — — 1,151.1 974.9 (17.0 ) 2,109.0 Gross profit — — 72.7 99.1 — 171.8 Selling, general and administrative expenses — 6.2 75.5 77.0 — 158.7 Restructuring charges — — 3.9 4.8 — 8.7 (Gains) losses on derivative financial instruments — — (3.5 ) 5.9 — 2.4 Other operating expense, net — — 1.2 0.7 — 1.9 Operating loss — (6.2 ) (4.4 ) 10.7 — 0.1 Interest expense, net — — 61.6 13.1 — 74.7 Other (income) expense, net — (5.0 ) 3.7 (3.8 ) — (5.1 ) Equity in net (earnings) loss of affiliates (61.4 ) 115.0 (1.3 ) — (52.3 ) — Income (loss) from continuing operations before income taxes 61.4 (116.2 ) (68.4 ) 1.4 52.3 (69.5 ) (Benefit from) provision for income taxes — — (28.3 ) 12.3 — (16.0 ) Income (loss) from continuing operations 61.4 (116.2 ) (40.1 ) (10.9 ) 52.3 (53.5 ) Income (loss) from discontinued operations, net of tax — 177.6 (100.7 ) 38.1 — 115.0 Net income (loss) 61.4 61.4 (140.8 ) 27.2 52.3 61.5 Net income attributable to noncontrolling interest — — — 0.1 — 0.1 Net income (loss) attributable to Aleris Corporation $ 61.4 $ 61.4 $ (140.8 ) $ 27.1 $ 52.3 $ 61.4 Comprehensive income (loss) $ 48.7 $ 48.8 $ (141.6 ) $ 15.5 $ 77.4 $ 48.8 Comprehensive income attributable to noncontrolling interest — — — 0.1 — 0.1 Comprehensive income (loss) attributable to Aleris Corporation $ 48.7 $ 48.8 $ (141.6 ) $ 15.4 $ 77.4 $ 48.7 For the three months ended September 30, 2014 Aleris Corporation (Parent) Aleris International, Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Revenues $ — $ — $ 466.9 $ 371.8 $ (29.7 ) $ 809.0 Cost of sales — — 437.7 316.4 (29.7 ) 724.4 Gross profit — — 29.2 55.4 — 84.6 Selling, general and administrative expenses — — 29.7 23.9 — 53.6 Restructuring charges — — 0.2 0.4 — 0.6 Losses on derivative financial instruments — — 1.7 8.3 — 10.0 Other operating expense, net — — 0.1 — — 0.1 Operating (loss) income — — (2.5 ) 22.8 — 20.3 Interest expense, net — — 23.3 4.0 — 27.3 Other (income) expense, net — — (2.0 ) (10.2 ) — (12.2 ) Equity in net loss (earnings) of affiliates (26.4 ) (26.4 ) (0.2 ) — 53.0 — (Loss) income from continuing operations before income taxes 26.4 26.4 (23.6 ) 29.0 (53.0 ) 5.2 Provision for income taxes — — — (3.3 ) — (3.3 ) (Loss) income from continuing operations 26.4 26.4 (23.6 ) 32.3 (53.0 ) 8.5 Income (loss) from discontinued operations, net of tax — — 12.0 6.2 — 18.2 Net (loss) income 26.4 26.4 (11.6 ) 38.5 (53.0 ) 26.7 Net income attributable to noncontrolling interest — — — 0.2 — 0.2 Net (loss) income attributable to Aleris Corporation $ 26.4 $ 26.4 $ (11.6 ) $ 38.3 $ (53.0 ) $ 26.5 Comprehensive (loss) income $ (27.1 ) $ (27.1 ) $ (11.2 ) $ (14.7 ) $ 53.2 $ (26.9 ) Comprehensive income attributable to noncontrolling interest — — — 0.2 — 0.2 Comprehensive (loss) income attributable to Aleris Corporation $ (27.1 ) $ (27.1 ) $ (11.2 ) $ (14.9 ) $ 53.2 $ (27.1 ) For the nine months ended September 30, 2014 Aleris Corporation (Parent) Aleris International, Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Revenues $ — $ — $ 1,151.2 $ 1,062.7 $ (64.6 ) $ 2,149.3 Cost of sales — — 1,082.8 935.5 (64.6 ) 1,953.7 Gross profit — — 68.4 127.2 — 195.6 Selling, general and administrative expenses — 0.2 86.5 69.2 — 155.9 Restructuring charges — — 0.6 0.9 — 1.5 Losses on derivative financial instruments — — 0.2 11.5 — 11.7 Other operating expense (income), net — — 0.4 (0.3 ) — 0.1 Operating (loss) income — (0.2 ) (19.3 ) 45.9 — 26.4 Interest expense, net — — 68.7 11.7 — 80.4 Other income, net — — (7.3 ) (5.8 ) — (13.1 ) Equity in net loss (earnings) of affiliates 8.6 8.4 (1.0 ) — (16.0 ) — (Loss) income from continuing operations before income taxes (8.6 ) (8.6 ) (79.7 ) 40.0 16.0 (40.9 ) Provision for income taxes — — — (2.7 ) — (2.7 ) (Loss) income from continuing operations (8.6 ) (8.6 ) (79.7 ) 42.7 16.0 (38.2 ) Income from discontinued operations, net of tax — — 23.0 7.5 — 30.5 Net (loss) income (8.6 ) (8.6 ) (56.7 ) 50.2 16.0 (7.7 ) Net income attributable to noncontrolling interest — — — 0.9 — 0.9 Net (loss) income attributable to Aleris Corporation $ (8.6 ) $ (8.6 ) $ (56.7 ) $ 49.3 $ 16.0 $ (8.6 ) Comprehensive loss $ (67.8 ) $ (67.8 ) $ (56.9 ) $ (8.5 ) $ 134.1 $ (66.9 ) Comprehensive income attributable to noncontrolling interest — — — 0.9 — 0.9 Comprehensive loss attributable to Aleris Corporation $ (67.8 ) $ (67.8 ) $ (56.9 ) $ (9.4 ) $ 134.1 $ (67.8 )
Schedule of Condensed Cash Flow Statement	For the nine months ended September 30, 2015 Aleris Corporation (Parent) Aleris International, Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Net cash provided (used) by operating activities $ 0.6 $ 76.1 $ 162.7 $ 43.4 $ (211.4 ) $ 71.4 Investing activities Payments for property, plant and equipment — — (133.5 ) (41.6 ) — (175.1 ) Proceeds from the sale of businesses, net of cash transferred — 319.4 4.2 263.5 — 587.1 Disbursements of intercompany loans — (46.7 ) (0.2 ) (20.3 ) 67.2 — Repayments from intercompany loans — 31.1 3.8 34.3 (69.2 ) — Equity contributions in subsidiaries — (137.5 ) (1.1 ) 138.6 — Return of investment in subsidiaries — 171.3 0.6 (171.9 ) — Other — (1.1 ) (0.1 ) 1.4 — 0.2 Net cash provided (used) by investing activities — 336.5 (126.3 ) 237.3 (35.3 ) 412.2 Financing activities Proceeds from the ABL facilities — 111.0 — 40.0 — 151.0 Payments on the ABL facilities — (335.0 ) — (40.0 ) — (375.0 ) Payments on the Senior Notes — (125.0 ) — — — (125.0 ) Proceeds from Zhenjiang term loans — Proceeds from Zhenjiang revolver — — — 8.5 — 8.5 Payments on the Zhenjiang revolver — — — (5.6 ) — (5.6 ) Net proceeds from (payments on) other long-term debt — 0.1 (0.3 ) (0.2 ) — (0.4 ) Debt issuance costs — (4.4 ) — — — (4.4 ) Dividends paid — — (173.5 ) (208.3 ) 381.8 — Proceeds from intercompany loans — 20.3 — 46.9 (67.2 ) — Repayments on intercompany loans — (34.3 ) — (34.9 ) 69.2 — Proceeds from intercompany equity contributions — 137.4 1.2 (138.6 ) — Other (0.6 ) (0.5 ) — — — (1.1 ) Net cash used by financing activities (0.6 ) (367.8 ) (36.4 ) (192.4 ) 245.2 (352.0 ) Effect of exchange rate differences on cash and cash equivalents — — — (2.8 ) — (2.8 ) Net increase in cash and cash equivalents — 44.8 — 85.5 (1.5 ) 128.8 Cash and cash equivalents at beginning of period — — — 36.0 — 36.0 Cash and cash equivalents at end of period $ — $ 44.8 $ — $ 121.5 $ (1.5 ) $ 164.8 For the nine months ended September 30, 2014 Aleris Corporation (Parent) Aleris International, Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Net cash provided (used) by operating activities $ 1.0 $ (140.3 ) $ 47.0 $ 53.8 $ 1.8 $ (36.7 ) Investing activities Payments for property, plant and equipment — — (47.3 ) (61.7 ) — (109.0 ) Purchase of a business — — (77.8 ) (29.6 ) — (107.4 ) Disbursements of intercompany loans — (15.0 ) (10.8 ) (87.0 ) 112.8 — Repayments from intercompany loans — 15.0 12.0 50.0 (77.0 ) — Equity contributions in subsidiaries — (107.4 ) — — 107.4 — Other — — 1.7 6.4 — 8.1 Net cash used by investing activities — (107.4 ) (122.2 ) (121.9 ) 143.2 (208.3 ) Financing activities Proceeds from the ABL facility — 322.0 — 15.0 — 337.0 Payments on the ABL facility — (114.0 ) — (15.0 ) — (129.0 ) Proceeds from Zhenjiang revolver — — — 19.8 — 19.8 Net (payments on) proceeds from other long-term debt — — (0.4 ) 0.8 — 0.4 Dividends paid — — — (0.7 ) 0.7 — Proceeds from intercompany loans — 82.0 5.0 25.8 (112.8 ) — Repayments on intercompany loans — (45.0 ) (5.0 ) (27.0 ) 77.0 — Proceeds from intercompany equity contributions — — 77.8 29.6 (107.4 ) — Other (1.0 ) (0.6 ) — (0.2 ) — (1.8 ) Net cash (used) provided by financing activities (1.0 ) 244.4 77.4 48.1 (142.5 ) 226.4 Effect of exchange rate differences on cash and cash equivalents — — — (3.7 ) — (3.7 ) Net (decrease) increase in cash and cash equivalents — (3.3 ) 2.2 (23.7 ) 2.5 (22.3 ) Cash and cash equivalents at beginning of period — 3.7 — 58.9 (2.5 ) 60.1 Cash and cash equivalents at end of period — 0.4 2.2 35.2 — 37.8 Cash and cash equivalents included within assets of discontinued operations - current — 1.9 (1.8 ) (12.4 ) — (12.3 ) Cash and cash equivalents of continuing operations $ — $ 2.3 $ 0.4 $ 22.8 $ — $ 25.5

Basis Of Presentation and Rec29

Basis Of Presentation and Recent Accounting Pronouncements (Details) $ in Millions	Sep. 30, 2015USD ($)
Other long-term assets
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Unamortized debt issuance expense	$ 9.3

Inventories (Details)

Inventories (Details) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Inventory Disclosure [Abstract]
Raw materials	$ 143.8	$ 217.3
Work in process	191.4	228.2
Finished goods	139.1	155.9
Supplies	25.8	26.5
Total inventories of continuing operations	500.1	627.9
Total inventories included within assets of discontinued operations - current	0	225.2
Total inventories	$ 500.1	$ 853.1

Long-Term Debt (Details)

Long-Term Debt (Details) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Other	$ 5.2	$ 5.2
Total debt of continuing operations	1,128.5	1,478.2
Less: Current portion of long-term debt	13.5	3.3
Total long-term debt	1,115	1,474.9
Line of Credit | ABL Facility
Debt Instrument [Line Items]
Long-term line of credit	0	224
Senior Notes
Debt Instrument [Line Items]
Senior notes	10
Senior Notes | 7 5/8% Senior Notes
Debt Instrument [Line Items]
Senior notes	432	495.5
Total long-term debt	434.9
Debt discount	$ 2.9	4.5
Stated interest rate	7.625%
Senior Notes | 7 7/8% Senior Notes
Debt Instrument [Line Items]
Senior notes	$ 435.2	493.6
Total long-term debt	440.1
Debt discount	$ 4.9	6.4
Stated interest rate	7.875%
Senior Subordinated Notes | Senior Subordinated Exchangeable Notes
Debt Instrument [Line Items]
Exchangeable notes, net of discount of $0.5 and $0.6 at September 30, 2015 and December 31, 2014, respectively	$ 44.3	44.2
Debt discount	0.5	0.6
Notes Payable to Banks | Zhenjiang term loans
Debt Instrument [Line Items]
Zhenjiang term loans, net of discount of $0.8 and $0.9 at September 30, 2015 and December 31, 2014, respectively	185.7	191.5
Debt discount	0.8	0.9
Foreign Line of Credit | Zhenjiang revolver
Debt Instrument [Line Items]
Long-term line of credit	26.1	24.2
Debt discount	$ 0.2	$ 0.2

Long-Term Debt (Narrative) (Det

Long-Term Debt (Narrative) (Details) - USD ($)	Sep. 08, 2015	Jun. 15, 2015	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014	Oct. 23, 2012	Feb. 09, 2011
Debt Instrument [Line Items]
Payments on the Senior Notes			$ 125,000,000	$ 0
Total long-term debt			1,115,000,000		$ 1,474,900,000
Revolving Credit Facility | 2015 ABL Facility
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 600,000,000
Additional increase		$ 300,000,000
Mandatory prepayment with net cash proceeds of asset sales		100.00%
Mandatory prepayment with net cash proceeds from issuance of debt		100.00%
Remaining borrowing capacity			100,000,000
Required minimum borrowing percent of lessor of total commitments or borrowing base outstanding for minimum fixed charge coverage ratio to not apply		10.00%
Required minimum borrowing amount outstanding for minimum fixed charge coverage ratio to not apply		$ 40,000,000
Revolving Credit Facility | 2015 ABL Facility | Minimum
Debt Instrument [Line Items]
Commitment fee percentage		0.25%
Fixed charge fee		1
Revolving Credit Facility | 2015 ABL Facility | Maximum
Debt Instrument [Line Items]
Commitment fee percentage		0.375%
Revolving Credit Facility | 2015 ABL Facility | LIBOR | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate		1.50%
Revolving Credit Facility | 2015 ABL Facility | LIBOR | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate		2.00%
Revolving Credit Facility | 2015 ABL Facility | Eurodollar | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate		0.50%
Revolving Credit Facility | 2015 ABL Facility | Eurodollar | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate		1.00%
Revolving Credit Facility | 2015 ABL Facility | EURIBOR | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate		1.50%
Revolving Credit Facility | 2015 ABL Facility | EURIBOR | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate		2.00%
Revolving Credit Facility | 2015 ABL Facility | Sterling LIBOR | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate		1.50%
Revolving Credit Facility | 2015 ABL Facility | Sterling LIBOR | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate		2.00%
Swingline Loan | 2015 ABL Facility
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 45,000,000
Letter of Credit | 2015 ABL Facility
Debt Instrument [Line Items]
Maximum borrowing capacity		125,000,000
Senior Notes
Debt Instrument [Line Items]
Payments on the Senior Notes	$ 125,000,000
Senior notes			10,000,000
Senior Notes | 7 5/8% Senior Notes
Debt Instrument [Line Items]
Face amount							$ 500,000,000
Payments on the Senior Notes	65,100,000
Total long-term debt			434,900,000
Senior notes			432,000,000		495,500,000
Senior Notes | 7 7/8% Senior Notes
Debt Instrument [Line Items]
Face amount						$ 500,000,000
Payments on the Senior Notes	$ 59,900,000
Total long-term debt			440,100,000
Senior notes			435,200,000		$ 493,600,000
Subsidiaries | United States | Revolving Credit Facility | 2015 ABL Facility
Debt Instrument [Line Items]
Maximum borrowing capacity		600,000,000
Aleris Switzerland GmbH | Aleris Switzerland | Revolving Credit Facility | 2015 ABL Facility
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 300,000,000
Other Income (Expense)
Debt Instrument [Line Items]
Losses on extinguishment of debt			$ 1,500,000

Commitments And Contingencies (

Commitments And Contingencies (Details) $ in Millions	9 Months Ended
	Sep. 30, 2015USD ($)Foreign_CountriesStatesSite	Dec. 31, 2014USD ($)
Loss Contingencies [Line Items]
Number of Superfund sites with operations and maintenance | Site	2
Number of states in which company performs environmental remediation | States	4
Number of foreign countries with environmental remediations | Foreign_Countries	1
Number of Sites with Environmental Remediations | Site	7
Portion of environmental liabilities indemnified by Corus Group Ltd.	$ 13.5	$ 15
Asset retirement obligations	$ 4.9	4.6
Estimated time frame of disbursements	10 years
Other Long-Term Liabilities and Accrued Liabilities
Loss Contingencies [Line Items]
Reserves for environmental remediation liabilities	$ 26.1	$ 24.4

Stockholders' Equity and Rede34

Stockholders' Equity and Redeemable Noncontrolling Interest (Schedule of Stockholders' Equity) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Increase (Decrease) in Stockholders' Equity Disclosure [Roll Forward]
Aleris Corporation equity at beginning of period			$ 292.6
Noncontrolling interest at beginning of period			0.7
Total Equity at beginning of period			293.3
Net income attributable to Aleris Corporation	$ (25.4)	$ 26.5	61.4	$ (8.6)
Net income (loss)	(25.4)	$ 26.7	61.5	$ (7.7)
Other comprehensive loss			(12.7)
Stock-based compensation activity			3.2
Conversion of Aleris International preferred stock to common stock			5.6
Other			(0.8)
Aleris Corporation equity at end of period	350.1		350.1
Noncontrolling interest at end of period	0		0
Total Equity at end of period	350.1		350.1
Aleris Corporation
Increase (Decrease) in Stockholders' Equity Disclosure [Roll Forward]
Aleris Corporation equity at beginning of period			292.6
Net income attributable to Aleris Corporation			61.4
Other comprehensive loss			(12.7)
Stock-based compensation activity			3.2
Conversion of Aleris International preferred stock to common stock			5.6
Other			0
Aleris Corporation equity at end of period	350.1		350.1
Noncontrolling Interest
Increase (Decrease) in Stockholders' Equity Disclosure [Roll Forward]
Noncontrolling interest at beginning of period			0.7
Net income attributable to noncontrolling interest			0.1
Other comprehensive loss			0
Stock-based compensation activity			0
Conversion of Aleris International preferred stock to common stock			0
Other			(0.8)
Noncontrolling interest at end of period	0		0
Redeemable Noncontrolling Interest
Increase (Decrease) in Stockholders' Equity Disclosure [Roll Forward]
Redeemable noncontrolling interest at beginning of period			5.7
Net Income (Loss) Attributable to Redeemable Noncontrolling Interest			0
Other comprehensive loss			0
Stock-based compensation activity			0
Conversion of Aleris International preferred stock to common stock			(5.6)
Other			(0.1)
Redeemable noncontrolling interest at end of period	$ 0		$ 0

Stockholders' Equity and Rede35

Stockholders' Equity and Redeemable Noncontrolling Interest (Changes in the Number of Outstanding Common Stock) (Details)	9 Months Ended
	Sep. 30, 2015shares
Outstanding Shares of Common Stock [Roll Forward]
Balance at January 1, 2015	31,281,513
Issuance upon conversion of Aleris International preferred stock	304,549
Balance at September 30, 2015	31,695,210
Stock Options
Outstanding Shares of Common Stock [Roll Forward]
Issuance associated with units exercised or vested	29,624
Restricted Stock
Outstanding Shares of Common Stock [Roll Forward]
Issuance associated with units exercised or vested	79,524

Accumulated Other Comprehensi36

Accumulated Other Comprehensive Loss (Details) $ in Millions	9 Months Ended
	Sep. 30, 2015USD ($)
Accumulated Other Comprehensive Income [Roll Forward]
Balance at January 1, 2015	$ (160.9)
Current period currency translation adjustments	(61.8)
Reclassification into earnings due to the sale of businesses	45.2
Amortization of net actuarial losses, net of tax	3.9
Balance at September 30, 2015	(173.6)
Reclassification into earnings due to the sale of businesses	(45.2)
Currency translation
Accumulated Other Comprehensive Income [Roll Forward]
Balance at January 1, 2015	(47.2)
Current period currency translation adjustments	(66.5)
Reclassification into earnings due to the sale of businesses	16.4
Amortization of net actuarial losses, net of tax	0
Balance at September 30, 2015	(97.3)
Reclassification into earnings due to the sale of businesses	(16.4)
Pension and other postretirement
Accumulated Other Comprehensive Income [Roll Forward]
Balance at January 1, 2015	(113.7)
Current period currency translation adjustments	4.7
Reclassification into earnings due to the sale of businesses	28.8
Amortization of net actuarial losses, net of tax	3.9
Balance at September 30, 2015	(76.3)
Reclassification into earnings due to the sale of businesses	(28.8)
Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income [Roll Forward]
Reclassification into earnings due to the sale of businesses	45.2
Reclassification into earnings due to the sale of businesses	(45.2)
Amortization of net actuarial losses	(4.6)
Deferred tax benefit on pension and other postretirement liability adjustments	0.7
Losses reclassified into earnings, net of tax	$ (49.1)

Segment Information (Schedule o

Segment Information (Schedule of Revenues and Segment Income) (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015USD ($)	Sep. 30, 2014USD ($)	Sep. 30, 2015USD ($)Operating_Segment	Sep. 30, 2014USD ($)
Segment Reporting Information [Line Items]
Number of operating segments | Operating_Segment			3
Revenue for Reportable Segments
Revenues	$ 760.7	$ 809	$ 2,280.8	$ 2,149.3
Segment income	72.1	64.5	191.3	186.4
External Customers
Revenue for Reportable Segments
Revenues	760.7	809	2,280.8	2,149.3
Operating segments | North America
Revenue for Reportable Segments
Revenues	405.8	468	1,225.9	1,148.4
Segment income	36.4	26.4	93	75.8
Operating segments | Europe
Revenue for Reportable Segments
Revenues	340.1	362.3	1,024.6	1,069.3
Segment income	35.1	38.1	99.5	110.6
Operating segments | Asia Pacific
Revenue for Reportable Segments
Revenues	24.5	15.6	69.2	36.8
Segment income	0.6	0	(1.2)	0
Operating segments | External Customers | North America
Revenue for Reportable Segments
Revenues	405.6	466.7	1,225	1,146
Operating segments | External Customers | Europe
Revenue for Reportable Segments
Revenues	331.4	328.4	991.3	972.8
Operating segments | External Customers | Asia Pacific
Revenue for Reportable Segments
Revenues	23.7	13.9	64.5	30.5
Operating segments | Intra-entity Eliminations | North America
Revenue for Reportable Segments
Revenues	0.2	1.3	0.9	2.4
Operating segments | Intra-entity Eliminations | Europe
Revenue for Reportable Segments
Revenues	8.7	33.9	33.3	96.5
Operating segments | Intra-entity Eliminations | Asia Pacific
Revenue for Reportable Segments
Revenues	0.8	1.7	4.7	6.3
Intra-entity Eliminations
Revenue for Reportable Segments
Revenues	(9.7)	(36.9)	(38.9)	(105.2)
Intra-entity Eliminations | Intra-entity Eliminations
Revenue for Reportable Segments
Revenues	$ 0	$ 0	$ 0	$ 0

Segment Information (Reconcilia

Segment Information (Reconciliation of Segment Income to Consolidated Statements of Comprehensive Loss) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Segment Reporting Information [Line Items]
Loss from continuing operations attributable to Aleris Corporation	$ (25.4)	$ 26.5	$ 61.4	$ (8.6)
Depreciation and amortization			(92.9)	(112.2)
Restructuring charges	(1)	(0.6)	(8.7)	(1.5)
Interest expense, net	(23.6)	(27.3)	(74.7)	(80.4)
Unallocated (losses) gains on derivative financial instruments	(2)	(10)	(2.4)	(11.7)
(Loss) income from continuing operations before income taxes	(22)	5.2	(69.5)	(40.9)
Operating segments
Segment Reporting Information [Line Items]
Loss from continuing operations attributable to Aleris Corporation	72.1	64.5	191.3	186.4
Operating segments | Unallocated Amounts
Segment Reporting Information [Line Items]
Depreciation and amortization	(27.7)	(33.6)	(92.9)	(87.8)
Other corporate general and administrative expenses	(8)	(16.5)	(41.1)	(49.1)
Restructuring charges	(1)	(0.6)	(8.7)	(1.5)
Interest expense, net	(23.6)	(27.3)	(74.7)	(80.4)
Unallocated (losses) gains on derivative financial instruments	(21.5)	13.7	(26)	4
Unallocated currency exchange (losses) gains	(4.8)	8.5	3.4	7.7
Start-up costs	(6.8)	(3.5)	(14.6)	(19.8)
Other expense, net	$ (0.7)	$ 0	$ (6.2)	$ (0.4)

Segment Information (Reconcil39

Segment Information (Reconciliation of Reportable Segment Assets) (Details) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	$ 2,337.3	$ 2,861.9
Operating segments | North America
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	828.8	790.9
Operating segments | Europe
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	675.5	701.9
Operating segments | Asia Pacific
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	410.3	433.3
Operating segments | Discontinued Operations
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	0	655.4
Operating segments | Unallocated Amounts
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	$ 422.7	$ 280.4

Stock-Based Compensation (Detai

Stock-Based Compensation (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Life of award (in years)			10 years
Award vesting period (in years)			4 years
Stock options granted (in shares)			69,400
Stock options forfeited (in shares)			596,872
Stock-based compensation expense	$ (1.5)	$ 2.8	$ 3.9	$ 11
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock units granted (in shares)			49,676
Restricted stock units forfeited (in shares)			141,671

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Income Tax Disclosure [Abstract]
Effective tax rate (percent)	4.60%	(60.30%)	23.00%	6.90%
Unrecognized tax benefits	$ 2.5		$ 2.5
Accrued interest related to uncertain tax positions	$ 0.4		$ 0.4

Employee Benefit Plans (Details

Employee Benefit Plans (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Defined Benefit Plan Disclosure [Line Items]
Amortization of net actuarial losses (gains)			$ (3.9)
U.S. Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 1	$ 0.8	2.9	$ 2.3
Interest cost	1.8	1.8	5.3	5.4
Amortization of net actuarial losses (gains)	0.5	0	1.4	0
Amortization of prior service cost	0	0	0.2	0
Expected return on plan assets	(2.7)	(2.6)	(8.1)	(7.8)
Net periodic benefit expense	0.6	0	1.7	(0.1)
European Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	0.7	1	2.5	2.9
Interest cost	0.7	1.9	2.4	5.8
Amortization of net actuarial losses (gains)	0.7	0.3	2.6	1
Expected return on plan assets	0	0	0	(0.1)
Net periodic benefit expense	2.1	3.2	7.5	9.6
Other Postretirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	0	0.1	0.1
Interest cost	0.4	0.5	1.3	1.3
Amortization of net actuarial losses (gains)	0.1	(0.1)	0.4	(0.3)
Net periodic benefit expense	0.5	0.4	1.8	1.1
Discontinued Operations | European Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit expense	0	(1.5)	(1.2)	(4.6)
Continuing Operations | European Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit expense	$ 2.1	$ 1.7	$ 6.3	$ 5

Derivative And Other Financia43

Derivative And Other Financial Instruments (Narratives) (Details) T in Millions, BTU in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2015EUR (€)BTUgalT	Dec. 31, 2014EUR (€)BTUgalT	Sep. 30, 2015USD ($)BTUgalT	Dec. 31, 2014USD ($)BTUgalT
Derivative [Line Items]
Cash collateral posted | $			$ 3,700,000	$ 0
Metal
Derivative [Line Items]
Maximum settlement period of derivatives (in months)	3 months
Tons of metal in forward contracts with the right to buy (in tons)	0.2	0.2	0.2	0.2
Tons of metal in forward contracts with the right to sell (in tons)	0.2	0.2	0.2	0.2
Energy Related Derivative
Derivative [Line Items]
British thermal units in forward buy contracts (in British thermal units) | BTU	0.3	3.5	0.3	3.5
British thermal units in forward sell contracts (in British thermal units) | BTU	0.8		0.8
Gallons in diesel swap contracts (in gallons) | gal	300,000	0	300,000	0
Currency
Derivative [Line Items]
Euros in forward contracts | €	€ 32,900,000	€ 0
Convertible Notes Payable
Derivative [Line Items]
Risk-free interest rate (percent)	1.30%	1.70%
Expected equity volatility rate (percent)	45.00%	45.00%
Zhenjiang term loans
Derivative [Line Items]
Maximum period for variable interest rate paid (in months)	6 months

Derivative And Other Financia44

Derivative And Other Financial Instruments (Schedule of Derivative Instruments) (Details) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Asset
Fair value	$ 12.9	$ 28.6
Effect of counterparty netting	(11.2)	(19.6)
Effect of cash collateral	0	0
Net derivatives as classified in the balance sheet	1.7	9
Liability
Fair value	(32.4)	(24.8)
Effect of counterparty netting	11.2	19.6
Effect of cash collateral	3.7	0
Net derivatives as classified in the balance sheet	(17.5)	(5.2)
Metal
Asset
Fair value	12.7	28.6
Liability
Fair value	(31.5)	(21.4)
Energy Related Derivative
Asset
Fair value	0	0
Liability
Fair value	(0.6)	(3.4)
Currency
Asset
Fair value	0.2	0
Liability
Fair value	$ (0.3)	$ 0

Derivative And Other Financia45

Derivative And Other Financial Instruments (Schedule of Derivative Instruments in Balance Sheet by Contract Type) (Details) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Derivatives, Fair Value [Line Items]
Prepaid expenses and other current assets	$ 32.3	$ 44.9
Other long-term assets	91.4	72.4
Total Asset Derivatives	1.7	9
Accrued liabilities	229.8	183.3
Other long-term liabilities	70	49.2
Total Liability Derivatives	17.5	5.2
Metal
Derivatives, Fair Value [Line Items]
Prepaid expenses and other current assets	1.7	8.7
Other long-term assets	0	0.3
Accrued liabilities	13.9	0.5
Other long-term liabilities	2.9	1.3
Energy Related Derivative
Derivatives, Fair Value [Line Items]
Accrued liabilities	0.6	3.4
Currency
Derivatives, Fair Value [Line Items]
Accrued liabilities	$ 0.1	$ 0

Derivative And Other Financia46

Derivative And Other Financial Instruments (Schedule of Realized (Gains) Losses on Derivatives) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Metal
Derivative Instruments, Loss [Line Items]
Realized (gains) losses on derivative financial instruments	$ (20)	$ 23.5	$ (25.9)	$ 16.9
Energy Related Derivative
Derivative Instruments, Loss [Line Items]
Realized (gains) losses on derivative financial instruments	0.6	0.2	2.4	(1.2)
Currency
Derivative Instruments, Loss [Line Items]
Realized (gains) losses on derivative financial instruments	$ 0.1	$ 0	$ 0.2	$ 0

Derivative And Other Financia47

Derivative And Other Financial Instruments (Schedule of Fair Value for Assets and Liabilities Measured on Recurring Basis) (Details) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Carrying Amount | Quoted prices in active markets for identical assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	$ 164.8	$ 28.6
Carrying Amount | Significant other observable inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Lines of credit	0	224
Carrying Amount | Significant unobservable inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Receivables held in escrow	24.3
Exchangeable notes	44.3	44.2
Carrying Amount | 7 5/8% Senior Notes | Quoted prices in active markets for identical assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Senior notes	432	495.5
Carrying Amount | 7 7/8% Senior Notes | Quoted prices in active markets for identical assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Senior notes	435.2	493.6
Carrying Amount | Zhenjiang term loans | Significant unobservable inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Zhenjiang term loans	185.7	191.5
Carrying Amount | Zhenjiang revolver | Significant unobservable inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Lines of credit	26.1	24.2
Fair Value | Quoted prices in active markets for identical assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	164.8	28.6
Fair Value | Significant other observable inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Lines of credit	0	224
Fair Value | Significant unobservable inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Receivables held in escrow	24.3
Exchangeable notes	63.3	63.3
Fair Value | 7 5/8% Senior Notes | Quoted prices in active markets for identical assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Senior notes	421.9	508
Fair Value | 7 7/8% Senior Notes | Quoted prices in active markets for identical assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Senior notes	424.7	497.5
Fair Value | Zhenjiang term loans | Significant unobservable inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Zhenjiang term loans	186.5	192.4
Fair Value | Zhenjiang revolver | Significant unobservable inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Lines of credit	$ 26.3	$ 24.4

Discontinued Operations (Narrat

Discontinued Operations (Narratives) (Details) € in Millions, $ in Millions	Mar. 01, 2015EUR (€)	Mar. 01, 2015USD ($)	Feb. 27, 2015USD ($)shares	Sep. 30, 2015USD ($)	Apr. 30, 2015USD ($)	Sep. 30, 2015USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Amount invoiced						$ 8.4
Recycling and Specification Alloys Businesses
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from divestiture of businesses			$ 496.2
Cash placed in escrow			$ 5
Preferred stock placed in escrow | shares			25,000
Proceeds from purchase price adjustment				$ 3	$ 57.3
Transaction costs						16.4
Preferred stock, fair value			$ 19.3
Extrusions
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from divestiture of businesses	€ 29.6	$ 33.5
Proceeds from purchase price adjustment	€ 4.4	$ 4.9
Transaction costs						5.1
Recycling and Specification Alloys and Extrusions Businesses
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sales of disposed entities						51.8
Purchases of disposed entities						$ 15.1

Discontinued Operations (Balanc

Discontinued Operations (Balance Sheet) (Details) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash and cash equivalents	$ 0		$ 12.3
Inventories	0	$ 225.2
Total Current Assets	0	385.6
Total Long-Term Assets	0	269.8
Total Current Liabilities	0	195.9
Total Long-Term Liabilities	$ 0	156.4
Recycling and Specification Alloys and Extrusions Businesses
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash and cash equivalents		7.4
Accounts receivable, net		143.7
Inventories		225.2
Other assets		9.3
Total Current Assets		385.6
Property, plant and equipment, net		251.6
Other long-term assets		29.4
Loss recognized on classification as held for sale		(11.2)
Total Long-Term Assets		269.8
Accounts payable		139.6
Accrued and other liabilities		46.2
Current portion of long-term debt		10.1
Total Current Liabilities		195.9
Accrued pension benefits		117.5
Other long-term liabilities		38.9
Total Long-Term Liabilities		$ 156.4

Discontinued Operations (Statem

Discontinued Operations (Statement of Operations) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net (loss) gain on sale of discontinued operations			$ 196.9	$ 0
(Loss) income from discontinued operations, net of tax	$ (4.4)	$ 18.2	115	30.5
Recycling and Specification Alloys and Extrusions Businesses
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues	0	468.5	287.7	1,408.5
Cost of sales	0	433.3	270	1,319
Selling, general and administrative expenses	0	14.6	8.7	43.2
Other operating expense (income), net	0	1.1	(2.6)	3.5
Operating income from discontinued operations	0	19.5	11.6	42.8
Net (loss) gain on sale of discontinued operations	(0.4)	0	196.9	0
Other income, net	0	0	0	0.3
(Loss) income from discontinued operations before income taxes	(0.4)	19.5	208.5	42.5
Provision for income taxes	4	1.3	93.5	12
(Loss) income from discontinued operations, net of tax	$ (4.4)	$ 18.2	$ 115	$ 30.5

Discontinued Operations (Stat51

Discontinued Operations (Statement of Cash Flows) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net gain on sale of discontinued operations			$ 196.9	$ 0
Recycling and Specification Alloys and Extrusions Businesses
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Depreciation			0	24.4
Payments for property, plant and equipment			15.5	25.4
Net gain on sale of discontinued operations	$ (0.4)	$ 0	$ 196.9	$ 0

Condensed Consolidating Finan52

Condensed Consolidating Financial Statements (Condensed Balance Sheet) (Details) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014
Current Assets
Cash and cash equivalents	$ 164.8	$ 28.6	$ 25.5
Accounts receivable, net	298.4	271
Inventories	500.1	627.9
Deferred income taxes	28.1	28.1
Prepaid expenses and other current assets	32.3	44.9
Intercompany receivables	0	0
Assets of discontinued operations - current	0	385.6
Total Current Assets	1,023.7	1,386.1
Property, plant and equipment, net	1,036.1	942.9
Intangible assets, net	39.4	44
Deferred income taxes	146.7	146.7
Other long-term assets	91.4	72.4
Intercompany receivables	0	0
Investments in subsidiaries	0	0
Assets of discontinued operations - long-term	0	269.8
Total Assets	2,337.3	2,861.9
Current Liabilities
Accounts payable	280.2	268.2
Accrued liabilities	229.8	183.3
Deferred income taxes	6.2	6.2
Current portion of long-term debt	13.5	3.3
Intercompany payables	0	0
Liabilities of discontinued operations - current	0	195.9
Total Current Liabilities	529.7	656.9
Long-term debt	1,115	1,474.9
Deferred income taxes	63.9	0.4
Accrued pension benefits	164	178.7
Accrued postretirement benefits	44.6	46.4
Other long-term liabilities	70	49.2
Intercompany payables	0	0
Liabilities of discontinued operations - long-term	0	156.4
Total Long-Term Liabilities	1,457.5	1,906
Redeemable noncontrolling interest	0	5.7
Total equity	350.1	292.6
Noncontrolling interest	0	0.7
Total Liabilities and Equity	2,337.3	2,861.9
Aleris Corporation (Parent)
Current Assets
Cash and cash equivalents	0	0	0
Accounts receivable, net	0	0
Inventories	0	0
Deferred income taxes	0	0
Prepaid expenses and other current assets	0	0
Intercompany receivables	0	0
Assets of discontinued operations - current		0
Total Current Assets	0	0
Property, plant and equipment, net	0	0
Intangible assets, net	0	0
Deferred income taxes	0	0
Other long-term assets	0	0
Intercompany receivables	5.2	0
Investments in subsidiaries	349.8	296.9
Assets of discontinued operations - long-term		0
Total Assets	355	296.9
Current Liabilities
Accounts payable	0	0
Accrued liabilities	0	0
Deferred income taxes	0	0
Current portion of long-term debt	0	0
Intercompany payables	0	0
Liabilities of discontinued operations - current		0
Total Current Liabilities	0	0
Long-term debt	0	0
Deferred income taxes	0	0
Accrued pension benefits	0	0
Accrued postretirement benefits	0	0
Other long-term liabilities	0	0
Intercompany payables	4.8	4.3
Liabilities of discontinued operations - long-term		0
Total Long-Term Liabilities	4.8	4.3
Redeemable noncontrolling interest		0
Total equity	350.2	292.6
Noncontrolling interest		0
Total Liabilities and Equity	355	296.9
Aleris International, Inc.
Current Assets
Cash and cash equivalents	44.8	0	2.3
Accounts receivable, net	2.6	0
Inventories	0	0
Deferred income taxes	0	0
Prepaid expenses and other current assets	3	0.6
Intercompany receivables	385.4	86.4
Assets of discontinued operations - current		0
Total Current Assets	435.8	87
Property, plant and equipment, net	0	0
Intangible assets, net	0	0
Deferred income taxes	0	0
Other long-term assets	18.5	8.3
Intercompany receivables	4.8	4.3
Investments in subsidiaries	1,204.7	1,566.4
Assets of discontinued operations - long-term		0
Total Assets	1,663.8	1,666
Current Liabilities
Accounts payable	3.7	10.4
Accrued liabilities	20.9	32.7
Deferred income taxes	0	0
Current portion of long-term debt	0	0
Intercompany payables	377.6	62.9
Liabilities of discontinued operations - current		0
Total Current Liabilities	402.2	106
Long-term debt	911.5	1,257.4
Deferred income taxes	0	0
Accrued pension benefits	0	0
Accrued postretirement benefits	0	0
Other long-term liabilities	0	0
Intercompany payables	0	0
Liabilities of discontinued operations - long-term		0
Total Long-Term Liabilities	911.5	1,257.4
Redeemable noncontrolling interest		5.7
Total equity	350.1	296.9
Noncontrolling interest		0
Total Liabilities and Equity	1,663.8	1,666
Guarantors
Current Assets
Cash and cash equivalents	0	0	0.4
Accounts receivable, net	124.5	122.8
Inventories	184.1	272.6
Deferred income taxes	19.5	19.5
Prepaid expenses and other current assets	17.1	14.8
Intercompany receivables	262.1	65.4
Assets of discontinued operations - current		131.1
Total Current Assets	607.3	626.2
Property, plant and equipment, net	483.3	336.6
Intangible assets, net	23.5	28.1
Deferred income taxes	15.8	15.8
Other long-term assets	6.4	7
Intercompany receivables	0	0
Investments in subsidiaries	2.7	10.4
Assets of discontinued operations - long-term		107.5
Total Assets	1,139	1,131.6
Current Liabilities
Accounts payable	137.6	131.2
Accrued liabilities	105.9	73.1
Deferred income taxes	0	0
Current portion of long-term debt	0.4	0.3
Intercompany payables	258.8	89.7
Liabilities of discontinued operations - current		71.1
Total Current Liabilities	502.7	365.4
Long-term debt	0	0.2
Deferred income taxes	54.8	0
Accrued pension benefits	50.5	57.4
Accrued postretirement benefits	44.6	46.4
Other long-term liabilities	36.4	14.8
Intercompany payables	0	0
Liabilities of discontinued operations - long-term		18.9
Total Long-Term Liabilities	186.3	137.7
Redeemable noncontrolling interest		0
Total equity	450	628.5
Noncontrolling interest		0
Total Liabilities and Equity	1,139	1,131.6
Non-Guarantors
Current Assets
Cash and cash equivalents	121.5	28.6	22.8
Accounts receivable, net	171.3	148.2
Inventories	316	355.3
Deferred income taxes	8.6	8.6
Prepaid expenses and other current assets	12.2	29.5
Intercompany receivables	17.5	27.6
Assets of discontinued operations - current		254.5
Total Current Assets	647.1	852.3
Property, plant and equipment, net	552.8	606.3
Intangible assets, net	15.9	15.9
Deferred income taxes	130.9	130.9
Other long-term assets	66.5	57.1
Intercompany receivables	0	0
Investments in subsidiaries	0	0
Assets of discontinued operations - long-term		162.3
Total Assets	1,413.2	1,824.8
Current Liabilities
Accounts payable	140.4	126.6
Accrued liabilities	103	77.5
Deferred income taxes	6.2	6.2
Current portion of long-term debt	13.1	3
Intercompany payables	33.8	26.8
Liabilities of discontinued operations - current		124.8
Total Current Liabilities	296.5	364.9
Long-term debt	203.5	217.3
Deferred income taxes	9.1	0.4
Accrued pension benefits	113.5	121.3
Accrued postretirement benefits	0	0
Other long-term liabilities	33.6	34.4
Intercompany payables	0	0
Liabilities of discontinued operations - long-term		137.5
Total Long-Term Liabilities	359.7	510.9
Redeemable noncontrolling interest		0
Total equity	757	948.3
Noncontrolling interest		0.7
Total Liabilities and Equity	1,413.2	1,824.8
Eliminations
Current Assets
Cash and cash equivalents	(1.5)	0	$ 0
Accounts receivable, net	0	0
Inventories	0	0
Deferred income taxes	0	0
Prepaid expenses and other current assets	0	0
Intercompany receivables	(665)	(179.4)
Assets of discontinued operations - current		0
Total Current Assets	(666.5)	(179.4)
Property, plant and equipment, net	0	0
Intangible assets, net	0	0
Deferred income taxes	0	0
Other long-term assets	0	0
Intercompany receivables	(10)	(4.3)
Investments in subsidiaries	(1,557.2)	(1,873.7)
Assets of discontinued operations - long-term		0
Total Assets	(2,233.7)	(2,057.4)
Current Liabilities
Accounts payable	(1.5)	0
Accrued liabilities	0	0
Deferred income taxes	0	0
Current portion of long-term debt	0	0
Intercompany payables	(670.2)	(179.4)
Liabilities of discontinued operations - current		0
Total Current Liabilities	(671.7)	(179.4)
Long-term debt	0	0
Deferred income taxes	0	0
Accrued pension benefits	0	0
Accrued postretirement benefits	0	0
Other long-term liabilities	0	0
Intercompany payables	(4.8)	(4.3)
Liabilities of discontinued operations - long-term		0
Total Long-Term Liabilities	(4.8)	(4.3)
Redeemable noncontrolling interest		0
Total equity	(1,557.2)	(1,873.7)
Noncontrolling interest		0
Total Liabilities and Equity	$ (2,233.7)	$ (2,057.4)

Condensed Consolidating Finan53

Condensed Consolidating Financial Statements (Condensed Income Statement) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Condensed Financial Statements, Captions [Line Items]
Revenues	$ 760.7	$ 809	$ 2,280.8	$ 2,149.3
Cost of sales	702.8	724.4	2,109	1,953.7
Gross profit	57.9	84.6	171.8	195.6
Selling, general and administrative expenses	44.9	53.6	158.7	155.9
Restructuring charges	1	0.6	8.7	1.5
(Gains) losses on derivative financial instruments	2	10	2.4	11.7
Other operating expense, net	0.6	0.1	1.9	0.1
Operating income	9.4	20.3	0.1	26.4
Interest expense, net	23.6	27.3	74.7	80.4
Other (income) expense, net	7.8	(12.2)	(5.1)	(13.1)
Equity in net loss of affiliates	0	0	0	0
(Loss) income from continuing operations before income taxes	(22)	5.2	(69.5)	(40.9)
(Benefit from) provision for income taxes	(1)	(3.3)	(16)	(2.7)
(Loss) income from continuing operations	(21)	8.5	(53.5)	(38.2)
Income (loss) from discontinued operations, net of tax	(4.4)	18.2	115	30.5
Net (loss) income	(25.4)	26.7	61.5	(7.7)
Net income from discontinued operations attributable to noncontrolling interest	0	0.2	0.1	0.9
Net (loss) income attributable to Aleris Corporation	(25.4)	26.5	61.4	(8.6)
Comprehensive (loss) income	(19.7)	(26.9)	48.8	(66.9)
Comprehensive income attributable to noncontrolling interest	0	0.2	0.1	0.9
Comprehensive (loss) income attributable to Aleris Corporation	(19.7)	(27.1)	48.7	(67.8)
Aleris Corporation (Parent)
Condensed Financial Statements, Captions [Line Items]
Revenues	0	0	0	0
Cost of sales	0	0	0	0
Gross profit	0	0	0	0
Selling, general and administrative expenses	$ 0	0	0	0
Restructuring charges		0	0	0
(Gains) losses on derivative financial instruments	$ 0	0	0	0
Other operating expense, net	0	0	0	0
Operating income	$ 0	0	0	0
Interest expense, net		0	0	0
Other (income) expense, net	$ 0	0	0	0
Equity in net loss of affiliates	25.4	(26.4)	(61.4)	8.6
(Loss) income from continuing operations before income taxes	(25.4)	26.4	61.4	(8.6)
(Benefit from) provision for income taxes	0	0	0	0
(Loss) income from continuing operations	(25.4)	26.4	61.4	(8.6)
Income (loss) from discontinued operations, net of tax	0	0	0	0
Net (loss) income	(25.4)	26.4	61.4	(8.6)
Net income from discontinued operations attributable to noncontrolling interest	0	0	0	0
Net (loss) income attributable to Aleris Corporation	(25.4)	26.4	61.4	(8.6)
Comprehensive (loss) income	(19.7)	(27.1)	48.7	(67.8)
Comprehensive income attributable to noncontrolling interest	0	0	0	0
Comprehensive (loss) income attributable to Aleris Corporation	(19.7)	(27.1)	48.7	(67.8)
Aleris International, Inc.
Condensed Financial Statements, Captions [Line Items]
Revenues	0	0	0	0
Cost of sales	0	0	0	0
Gross profit	0	0	0	0
Selling, general and administrative expenses	$ 0.8	0	6.2	0.2
Restructuring charges		0	0	0
(Gains) losses on derivative financial instruments	$ 0	0	0	0
Other operating expense, net	0	0	0	0
Operating income	(0.8)	0	(6.2)	(0.2)
Interest expense, net	0	0	0	0
Other (income) expense, net	(3.1)	0	(5)	0
Equity in net loss of affiliates	30.3	(26.4)	115	8.4
(Loss) income from continuing operations before income taxes	(28)	26.4	(116.2)	(8.6)
(Benefit from) provision for income taxes	0	0	0	0
(Loss) income from continuing operations	(28)	26.4	(116.2)	(8.6)
Income (loss) from discontinued operations, net of tax	2.6	0	177.6	0
Net (loss) income	(25.4)	26.4	61.4	(8.6)
Net income from discontinued operations attributable to noncontrolling interest	0	0	0	0
Net (loss) income attributable to Aleris Corporation	(25.4)	26.4	61.4	(8.6)
Comprehensive (loss) income	(19.6)	(27.1)	48.8	(67.8)
Comprehensive income attributable to noncontrolling interest	0	0	0	0
Comprehensive (loss) income attributable to Aleris Corporation	(19.6)	(27.1)	48.8	(67.8)
Guarantors
Condensed Financial Statements, Captions [Line Items]
Revenues	405.9	466.9	1,223.8	1,151.2
Cost of sales	383	437.7	1,151.1	1,082.8
Gross profit	22.9	29.2	72.7	68.4
Selling, general and administrative expenses	23	29.7	75.5	86.5
Restructuring charges	0.2	0.2	3.9	0.6
(Gains) losses on derivative financial instruments	1	1.7	(3.5)	0.2
Other operating expense, net	0.1	0.1	1.2	0.4
Operating income	(1.4)	(2.5)	(4.4)	(19.3)
Interest expense, net	19.4	23.3	61.6	68.7
Other (income) expense, net	3.6	(2)	3.7	(7.3)
Equity in net loss of affiliates	0.3	(0.2)	(1.3)	(1)
(Loss) income from continuing operations before income taxes	(24.7)	(23.6)	(68.4)	(79.7)
(Benefit from) provision for income taxes	(4.4)	0	(28.3)	0
(Loss) income from continuing operations	(20.3)	(23.6)	(40.1)	(79.7)
Income (loss) from discontinued operations, net of tax	(3.6)	12	(100.7)	23
Net (loss) income	(23.9)	(11.6)	(140.8)	(56.7)
Net income from discontinued operations attributable to noncontrolling interest	0	0	0	0
Net (loss) income attributable to Aleris Corporation	(23.9)	(11.6)	(140.8)	(56.7)
Comprehensive (loss) income	(22.9)	(11.2)	(141.6)	(56.9)
Comprehensive income attributable to noncontrolling interest	0	0	0	0
Comprehensive (loss) income attributable to Aleris Corporation	(22.9)	(11.2)	(141.6)	(56.9)
Non-Guarantors
Condensed Financial Statements, Captions [Line Items]
Revenues	362.4	371.8	1,074	1,062.7
Cost of sales	327.4	316.4	974.9	935.5
Gross profit	35	55.4	99.1	127.2
Selling, general and administrative expenses	21.1	23.9	77	69.2
Restructuring charges	0.8	0.4	4.8	0.9
(Gains) losses on derivative financial instruments	1	8.3	5.9	11.5
Other operating expense, net	0.5	0	0.7	(0.3)
Operating income	11.6	22.8	10.7	45.9
Interest expense, net	4.2	4	13.1	11.7
Other (income) expense, net	7.3	(10.2)	(3.8)	(5.8)
Equity in net loss of affiliates	0	0	0	0
(Loss) income from continuing operations before income taxes	0.1	29	1.4	40
(Benefit from) provision for income taxes	3.4	(3.3)	12.3	(2.7)
(Loss) income from continuing operations	(3.3)	32.3	(10.9)	42.7
Income (loss) from discontinued operations, net of tax	(3.4)	6.2	38.1	7.5
Net (loss) income	(6.7)	38.5	27.2	50.2
Net income from discontinued operations attributable to noncontrolling interest	0	0.2	0.1	0.9
Net (loss) income attributable to Aleris Corporation	(6.7)	38.3	27.1	49.3
Comprehensive (loss) income	(1.9)	(14.7)	15.5	(8.5)
Comprehensive income attributable to noncontrolling interest	0	0.2	0.1	0.9
Comprehensive (loss) income attributable to Aleris Corporation	(1.9)	(14.9)	15.4	(9.4)
Eliminations
Condensed Financial Statements, Captions [Line Items]
Revenues	(7.6)	(29.7)	(17)	(64.6)
Cost of sales	(7.6)	(29.7)	(17)	(64.6)
Gross profit	0	0	0	0
Selling, general and administrative expenses	$ 0	0	0	0
Restructuring charges		0	0	0
(Gains) losses on derivative financial instruments	$ 0	0	0	0
Other operating expense, net	0	0	0	0
Operating income	0	0	0	0
Interest expense, net	0	0	0	0
Other (income) expense, net	0	0	0	0
Equity in net loss of affiliates	(56)	53	(52.3)	(16)
(Loss) income from continuing operations before income taxes	56	(53)	52.3	16
(Benefit from) provision for income taxes	0	0	0	0
(Loss) income from continuing operations	56	(53)	52.3	16
Income (loss) from discontinued operations, net of tax	0	0	0	0
Net (loss) income	56	(53)	52.3	16
Net income from discontinued operations attributable to noncontrolling interest	0	0	0	0
Net (loss) income attributable to Aleris Corporation	56	(53)	52.3	16
Comprehensive (loss) income	44.4	53.2	77.4	134.1
Comprehensive income attributable to noncontrolling interest	0	0	0	0
Comprehensive (loss) income attributable to Aleris Corporation	$ 44.4	$ 53.2	$ 77.4	$ 134.1

Condensed Consolidating Finan54

Condensed Consolidating Financial Statements (Condensed Cash Flow Statement) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Condensed Financial Statements, Captions [Line Items]
Net cash provided (used) by operating activities	$ 71.4	$ (36.7)
Investing activities
Payments for property, plant and equipment	(175.1)	(109)
Purchase of a business	0	(107.4)
Proceeds from the sale of businesses, net of cash transferred	587.1	0
Disbursements of intercompany loans	0	0
Repayments from intercompany loans	0	0
Equity contributions in subsidiaries	0	0
Return of investment in subsidiaries	0
Other	0.2	8.1
Net cash provided (used) by investing activities	412.2	(208.3)
Financing activities
Proceeds from the ABL facilities	151	337
Payments on the ABL facilities	(375)	(129)
Payments on the Senior Notes	(125)	0
Proceeds from Zhenjiang term loans	0
Proceeds from the Zhenjiang revolver	8.5	19.8
Payments on the Zhenjiang revolver	(5.6)	0
Net proceeds from (payments on) other long-term debt	(0.4)	0.4
Debt issuance costs	(4.4)	0
Dividends paid	0	0
Proceeds from intercompany loans	0	0
Repayments on intercompany loans	0	0
Proceeds from intercompany equity contributions	0	0
Other	(1.1)	(1.8)
Net cash (used) provided by financing activities	(352)	226.4
Effect of exchange rate differences on cash and cash equivalents	(2.8)	(3.7)
Net increase in cash and cash equivalents	128.8	(22.3)
Cash and cash equivalents at beginning of the period	36	60.1
Cash and cash equivalents at end of period	164.8	37.8
Cash and cash equivalents included within assets of discontinued operations - current	0	(12.3)
Cash and cash equivalents of continuing operations	164.8	25.5
Aleris Corporation (Parent)
Condensed Financial Statements, Captions [Line Items]
Net cash provided (used) by operating activities	0.6	1
Investing activities
Payments for property, plant and equipment	0	0
Purchase of a business		0
Proceeds from the sale of businesses, net of cash transferred	0
Disbursements of intercompany loans	0	0
Repayments from intercompany loans	0	0
Equity contributions in subsidiaries	0	0
Return of investment in subsidiaries	0
Other	0	0
Net cash provided (used) by investing activities	0	0
Financing activities
Proceeds from the ABL facilities	0	0
Payments on the ABL facilities	0	0
Payments on the Senior Notes	$ 0
Proceeds from Zhenjiang term loans
Proceeds from the Zhenjiang revolver	$ 0	0
Payments on the Zhenjiang revolver	0
Net proceeds from (payments on) other long-term debt	0	0
Debt issuance costs	0
Dividends paid	0	0
Proceeds from intercompany loans	0	0
Repayments on intercompany loans	0	0
Proceeds from intercompany equity contributions	0	0
Other	(0.6)	(1)
Net cash (used) provided by financing activities	(0.6)	(1)
Effect of exchange rate differences on cash and cash equivalents	0	0
Net increase in cash and cash equivalents	0	0
Cash and cash equivalents at beginning of the period	0	0
Cash and cash equivalents at end of period		0
Cash and cash equivalents included within assets of discontinued operations - current		0
Cash and cash equivalents of continuing operations	0	0
Aleris International, Inc.
Condensed Financial Statements, Captions [Line Items]
Net cash provided (used) by operating activities	76.1	(140.3)
Investing activities
Payments for property, plant and equipment	0	0
Purchase of a business		0
Proceeds from the sale of businesses, net of cash transferred	319.4
Disbursements of intercompany loans	(46.7)	(15)
Repayments from intercompany loans	31.1	15
Equity contributions in subsidiaries	(137.5)	(107.4)
Return of investment in subsidiaries	171.3
Other	(1.1)	0
Net cash provided (used) by investing activities	336.5	(107.4)
Financing activities
Proceeds from the ABL facilities	111	322
Payments on the ABL facilities	(335)	(114)
Payments on the Senior Notes	$ (125)
Proceeds from Zhenjiang term loans
Proceeds from the Zhenjiang revolver	$ 0	0
Payments on the Zhenjiang revolver	0
Net proceeds from (payments on) other long-term debt	0.1	0
Debt issuance costs	(4.4)
Dividends paid	0	0
Proceeds from intercompany loans	20.3	82
Repayments on intercompany loans	$ (34.3)	(45)
Proceeds from intercompany equity contributions		0
Other	$ (0.5)	(0.6)
Net cash (used) provided by financing activities	(367.8)	244.4
Effect of exchange rate differences on cash and cash equivalents	0	0
Net increase in cash and cash equivalents	44.8	(3.3)
Cash and cash equivalents at beginning of the period	0	3.7
Cash and cash equivalents at end of period		0.4
Cash and cash equivalents included within assets of discontinued operations - current		1.9
Cash and cash equivalents of continuing operations	44.8	2.3
Guarantors
Condensed Financial Statements, Captions [Line Items]
Net cash provided (used) by operating activities	162.7	47
Investing activities
Payments for property, plant and equipment	(133.5)	(47.3)
Purchase of a business		(77.8)
Proceeds from the sale of businesses, net of cash transferred	4.2
Disbursements of intercompany loans	(0.2)	(10.8)
Repayments from intercompany loans	3.8	12
Equity contributions in subsidiaries	(1.1)	0
Return of investment in subsidiaries	0.6
Other	(0.1)	1.7
Net cash provided (used) by investing activities	(126.3)	(122.2)
Financing activities
Proceeds from the ABL facilities	0	0
Payments on the ABL facilities	0	0
Payments on the Senior Notes	$ 0
Proceeds from Zhenjiang term loans
Proceeds from the Zhenjiang revolver	$ 0	0
Payments on the Zhenjiang revolver	0
Net proceeds from (payments on) other long-term debt	(0.3)	(0.4)
Debt issuance costs	0
Dividends paid	(173.5)	0
Proceeds from intercompany loans	0	5
Repayments on intercompany loans	0	(5)
Proceeds from intercompany equity contributions	137.4	77.8
Other	0	0
Net cash (used) provided by financing activities	(36.4)	77.4
Effect of exchange rate differences on cash and cash equivalents	0	0
Net increase in cash and cash equivalents	0	2.2
Cash and cash equivalents at beginning of the period	0	0
Cash and cash equivalents at end of period		2.2
Cash and cash equivalents included within assets of discontinued operations - current		(1.8)
Cash and cash equivalents of continuing operations	0	0.4
Non-Guarantors
Condensed Financial Statements, Captions [Line Items]
Net cash provided (used) by operating activities	43.4	53.8
Investing activities
Payments for property, plant and equipment	(41.6)	(61.7)
Purchase of a business		(29.6)
Proceeds from the sale of businesses, net of cash transferred	263.5
Disbursements of intercompany loans	(20.3)	(87)
Repayments from intercompany loans	$ 34.3	50
Equity contributions in subsidiaries		0
Return of investment in subsidiaries
Other	$ 1.4	6.4
Net cash provided (used) by investing activities	237.3	(121.9)
Financing activities
Proceeds from the ABL facilities	40	15
Payments on the ABL facilities	(40)	(15)
Payments on the Senior Notes	$ 0
Proceeds from Zhenjiang term loans
Proceeds from the Zhenjiang revolver	$ 8.5	19.8
Payments on the Zhenjiang revolver	(5.6)
Net proceeds from (payments on) other long-term debt	(0.2)	0.8
Debt issuance costs	0
Dividends paid	(208.3)	(0.7)
Proceeds from intercompany loans	46.9	25.8
Repayments on intercompany loans	(34.9)	(27)
Proceeds from intercompany equity contributions	1.2	29.6
Other	0	(0.2)
Net cash (used) provided by financing activities	(192.4)	48.1
Effect of exchange rate differences on cash and cash equivalents	(2.8)	(3.7)
Net increase in cash and cash equivalents	85.5	(23.7)
Cash and cash equivalents at beginning of the period	36	58.9
Cash and cash equivalents at end of period		35.2
Cash and cash equivalents included within assets of discontinued operations - current		(12.4)
Cash and cash equivalents of continuing operations	121.5	22.8
Eliminations
Condensed Financial Statements, Captions [Line Items]
Net cash provided (used) by operating activities	(211.4)	1.8
Investing activities
Payments for property, plant and equipment	0	0
Purchase of a business		0
Proceeds from the sale of businesses, net of cash transferred	0
Disbursements of intercompany loans	67.2	112.8
Repayments from intercompany loans	(69.2)	(77)
Equity contributions in subsidiaries	138.6	107.4
Return of investment in subsidiaries	(171.9)
Other	0	0
Net cash provided (used) by investing activities	(35.3)	143.2
Financing activities
Proceeds from the ABL facilities	0	0
Payments on the ABL facilities	0	0
Payments on the Senior Notes	$ 0
Proceeds from Zhenjiang term loans
Proceeds from the Zhenjiang revolver	$ 0	0
Payments on the Zhenjiang revolver	0
Net proceeds from (payments on) other long-term debt	0	0
Debt issuance costs	0
Dividends paid	381.8	0.7
Proceeds from intercompany loans	(67.2)	(112.8)
Repayments on intercompany loans	69.2	77
Proceeds from intercompany equity contributions	(138.6)	(107.4)
Other	0	0
Net cash (used) provided by financing activities	245.2	(142.5)
Effect of exchange rate differences on cash and cash equivalents	0	0
Net increase in cash and cash equivalents	(1.5)	2.5
Cash and cash equivalents at beginning of the period	0	(2.5)
Cash and cash equivalents at end of period		0
Cash and cash equivalents included within assets of discontinued operations - current		0
Cash and cash equivalents of continuing operations	$ (1.5)	$ 0