Ryerson Holding (RYI) 10-Q 7 Nov 17 2017 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2017	Nov. 03, 2017
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q3
Trading Symbol	RYI
Entity Registrant Name	RYERSON HOLDING CORPORATION
Entity Central Index Key	1,481,582
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		37,208,581

Condensed Consolidated Statemen

Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Statement Of Income And Comprehensive Income [Abstract]
Net sales	$ 864.2	$ 735.1	$ 2,554.1	$ 2,177.5
Cost of materials sold	719.2	589.7	2,108.1	1,721.5
Gross profit	145	145.4	446	456
Warehousing, delivery, selling, general and administrative	119.2	109.1	353.2	331.5
Restructuring and other charges		2.5		2.5
Operating profit	25.8	33.8	92.8	122
Other income and (expense), net	(1.4)	(0.2)	(2)	(13.2)
Interest and other expense on debt	(23.2)	(23.6)	(67.8)	(67.5)
Income before income taxes	1.2	10	23	41.3
Provision (benefit) for income taxes	(0.7)	1.6	5.3	14
Net income	1.9	8.4	17.7	27.3
Less: Net income attributable to noncontrolling interest	0.2	0.2	0.6
Net income attributable to Ryerson Holding Corporation	1.7	8.2	17.1	27.3
Comprehensive income	7.8	6.9	33.4	34.7
Less: Comprehensive income attributable to noncontrolling interest	0.2	0.1	0.9
Comprehensive income attributable to Ryerson Holding Corporation	$ 7.6	$ 6.8	$ 32.5	$ 34.7
Basic and diluted earnings per share	$ 0.05	$ 0.23	$ 0.46	$ 0.82

Condensed Consolidated Stateme3

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Operating activities:
Net income	$ 17.7	$ 27.3
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	34.1	31.8
Stock-based compensation	1.5	1
Deferred income taxes	6.9	13.4
Provision for allowances, claims and doubtful accounts	0.5	2.1
Loss on retirement of debt		7.2
Other-than-temporary impairment charge on available-for-sale investments	0.2	2.8
Restructuring and other charges		2.5
Premium and fees paid related to debt modification		(15.6)
Non-cash (gain) loss from derivatives	1.9	(8.2)
Other items	(0.7)	(0.2)
Change in operating assets and liabilities:
Receivables	(91.5)	(54.9)
Inventories	(117.5)	(67.3)
Other assets	(4.2)	13.9
Accounts payable	66.3	38.2
Accrued liabilities	22.6	17.9
Accrued taxes payable/receivable	(2.5)	1.3
Deferred employee benefit costs	(28.6)	(36.1)
Net adjustments	(111)	(50.2)
Net cash used in operating activities	(93.3)	(22.9)
Investing activities:
Acquisitions, net of cash acquired	(49.2)
(Increase) Decrease in restricted cash	(0.3)	0.2
Capital expenditures	(15.8)	(19.7)
Proceeds from sale of property, plant and equipment	3.7	3.2
Net cash used in investing activities	(61.6)	(16.3)
Financing activities:
Net proceeds from issuance of common stock		71.5
Long-term debt issued		650
Repayment of debt	(0.1)	(689)
Net proceeds of short-term borrowings	73.4	3.2
Net increase in book overdrafts	60.3	20.1
Long-term debt issuance costs		(5.2)
Principal payments on capital lease obligations	(12)	(3.9)
Contributions from non-controlling interest		0.3
Proceeds from sale leaseback transactions	22.4
Net cash provided by financing activities	144	47
Net increase (decrease) in cash and cash equivalents	(10.9)	7.8
Effect of exchange rate changes on cash and cash equivalents	3.8	2.2
Net change in cash and cash equivalents	(7.1)	10
Cash and cash equivalents—beginning of period	80.7	63.2
Cash and cash equivalents—end of period	73.6	73.2
Cash paid during the period for:
Interest paid to third parties	44.6	49.2
Income taxes, net	1.5	1.4
Noncash investing activities:
Asset additions under capital leases and sale-leasebacks	$ 34.6	$ 2.1

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 73.6	$ 80.7
Restricted cash	1.3	1
Receivables less provision for allowances, claims and doubtful accounts	425.4	326
Inventories	691.7	563.4
Prepaid expenses and other current assets	30.7	26.7
Total current assets	1,222.7	997.8
Property, plant, and equipment, at cost	727.6	668.7
Less: Accumulated depreciation	309.7	280.5
Property, plant and equipment, net	417.9	388.2
Deferred income taxes	8.6	24.4
Other intangible assets	48.5	40.8
Goodwill	115.3	103.2
Deferred charges and other assets	4.3	4.3
Total assets	1,817.3	1,558.7
Current liabilities:
Accounts payable	362.5	230.4
Salaries, wages and commissions	38	36.8
Other accrued liabilities	62	37.7
Short-term debt	20.2	19.2
Current portion of deferred employee benefits	8.3	8.3
Total current liabilities	491	332.4
Long-term debt	1,021.4	944.3
Deferred employee benefits	261.1	298.8
Other noncurrent liabilities	58.2	32.5
Total liabilities	1,831.7	1,608
Commitments and contingencies
Ryerson Holding Corporation stockholders’ equity (deficit):
Preferred stock, value
Common stock, value	0.4	0.4
Capital in excess of par value	376.9	375.4
Accumulated deficit	(95.1)	(112.2)
Treasury stock at cost - Common stock, value	(6.6)	(6.6)
Accumulated other comprehensive loss	(292.4)	(307.8)
Total Ryerson Holding Corporation stockholders’ equity (deficit)	(16.8)	(50.8)
Noncontrolling interest	2.4	1.5
Total equity (deficit)	(14.4)	(49.3)
Total liabilities and equity	$ 1,817.3	$ 1,558.7

Condensed Consolidated Balance5

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Statement Of Financial Position [Abstract]
Receivables, provision for allowances, claims and doubtful accounts	$ 5.6	$ 4.6
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	7,000,000	7,000,000
Preferred stock, shares issued	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	37,421,081	37,345,117
Treasury stock at cost - Common stock, shares	212,500	212,500

Financial Statements

Financial Statements	9 Months Ended
	Sep. 30, 2017
Accounting Policies [Abstract]
Financial Statements	NOTE 1: FINANCIAL STATEMENTS Ryerson Holding Corporation (“Ryerson Holding”), a Delaware corporation, is the parent company of Joseph T. Ryerson & Son, Inc. (“JT Ryerson”), a Delaware corporation. Affiliates of Platinum Equity, LLC (“Platinum”) own approximately 21,037,500 shares of our common stock, which is approximately 57% of our issued and outstanding common stock. We are a metals service center, with operations in the United States through JT Ryerson, in Canada through our indirect wholly-owned subsidiary Ryerson Canada, Inc., a Canadian corporation (“Ryerson Canada”) and in Mexico through our indirect wholly-owned subsidiary Ryerson Metals de Mexico, S. de R.L. de C.V., a Mexican corporation (“Ryerson Mexico”). In addition to our North American operations, we conduct materials distribution operations in China through Ryerson China Limited (“Ryerson China”). Unless the context indicates otherwise, Ryerson Holding, JT Ryerson, Ryerson Canada, Ryerson China, and Ryerson Mexico together with their subsidiaries, are collectively referred to herein as “Ryerson,” “we,” “us,” “our,” or the “Company.” The following table shows our percentage of sales by major product lines for the three and nine months ended September 30, 2017 and 2016, respectively: Three Months Ended Nine Months Ended September 30, September 30, Product Line 2017 2016 2017 2016 Carbon Steel Flat 29 % 29 % 28 % 27 % Carbon Steel Plate 10 9 10 9 Carbon Steel Long 12 13 12 14 Stainless Steel Flat 17 17 18 16 Stainless Steel Plate 4 4 4 4 Stainless Steel Long 4 3 4 4 Aluminum Flat 16 16 15 16 Aluminum Plate 3 3 3 3 Aluminum Long 4 4 4 5 Other 1 2 2 2 Total 100 % 100 % 100 % 100 % Results of operations for any interim period are not necessarily indicative of results of any other periods or for the year. The condensed consolidated financial statements as of September 30, 2017 and for the three-month and nine-month periods ended September 30, 2017 and 2016 are unaudited, but in the opinion of management include all adjustments, consisting of normal recurring adjustments, necessary for a fair presentation of results for such periods. The year-end condensed consolidated balance sheet data contained in this report was derived from audited financial statements, but does not include all disclosures required by accounting principles generally accepted in the United States of America. These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes contained in the Company’s Annual Report on Form 10-K for the year ended December 31, 2016.

Recent Accounting Pronouncement

Recent Accounting Pronouncements	9 Months Ended
	Sep. 30, 2017
New Accounting Pronouncements And Changes In Accounting Principles [Abstract]
Recent Accounting Pronouncements	NOTE 2: RECENT ACCOUNTING PRONOUNCEMENTS Impact of Recently Issued Accounting Standards—Adopted In March 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standard Update (“ASU”) 2016-07, “ Investments – Equity Method and Joint Ventures: Simplifying the Transition to the Equity Method of Accounting .” The amendment eliminates the retroactive adjustments to an investment upon it qualifying for the equity method of accounting as a result of an increase in the level of ownership interest or degree of influence by the investor. ASU 2016-07 requires that the equity method investor add the cost of acquiring the additional interest in the investee to the current basis of the investor's previously held interest and adopt the equity method of accounting as of the date the investment qualifies for equity method accounting. The update was effective for interim and annual reporting periods beginning after December 15, 2016. We adopted this guidance for our fiscal year beginning January 1, 2017. The adoption of this guidance did not have an impact on our consolidated financial statements. In January 2017, the FASB issued ASU 2017-01, “ Clarifying the Definition of a Business In January 2017, the FASB issued ASU 2017-04, “ Simplifying the Test for Goodwill Impairment In August 2017, the FASB issued ASU 2017-12, “ Targeted Improvements to Accounting for Hedging Activities Impact of Recently Issued Accounting Standards—Not Yet Adopted In May 2014, the FASB issued ASU 2014-09, “ Revenue from Contracts with Customers, Revenue from Contracts with Customers Revenue Recognition. We have established a project management team to analyze the impact of the new standard. The team is evaluating our different revenue streams and reviewing representative contracts with customers to identify if there are differences that would result from the application of the new standard as compared to our current accounting policies and practices. Under the new standard, the Company expects to recognize revenue on an over time basis for a subset of revenues associated with custom fabricated products instead of upon delivery of the fabricated product to the customer. The Company has not yet completed the process of quantifying the effects on our consolidated financial statements of the changes that may result from adoption. The Company is implementing new business processes and internal controls in order to recognize revenue in accordance with the new standard. We believe our implementation of the new standard is progressing in a timely manner to allow for proper recognition, presentation, and disclosure upon adoption. In January 2016, the FASB issued ASU 2016-01, " Financial Instruments – Overall: Recognition and Measurement of Financial Assets and Financial Liabilities. he amendments should be applied by means of a cumulative-effect adjustment to the balance sheet as of the beginning of the fiscal year of adoption. The amendments related to equity securities without readily determinable fair values (including disclosure requirements) should be applied prospectively to equity investments that exist as of the date of adoption. Early adoption is permitted. We will adopt this guidance for our fiscal year beginning January 1, 2018. We do not expect the adoption of this guidance to have a material impact on our consolidated financial statements. Our available-for-sale investment as of September 30, 2017 has a fair value of $0.1 million. In February 2016, the FASB issued ASU 2016-02, “ Leases ” codified in ASC 842, “ Leases. ” The guidance requires lessees to recognize assets and liabilities on the balance sheet for the rights and obligations created by all leases with terms of more than 12 months. The amendment also will require disclosures designed to give financial statement users information on the amount, timing, and uncertainty of cash flows arising from leases. These disclosures include qualitative and quantitative information. The update is effective for interim and annual reporting periods beginning after December 15, 2018. Entities are required to use a modified retrospective approach for leases that exist or are entered into after the beginning of the earliest comparative period in the financial statements, and have the option to use certain relief. Full retrospective application is prohibited. Early adoption is permitted. We will adopt this guidance for our fiscal year beginning January 1, 2019. The Company is working to gather lists of all leases and is in the process of implementing a lease software to be used for lease tracking, reporting and disclosures. We are still assessing the impact of adoption on our consolidated financial statements. In June 2016, the FASB issued ASU 2016-13, “ Financial Instruments – Credit Losses: Measurement of Credit Losses on Financial Instruments. ” The amendment requires financial assets measured at amortized cost basis to be presented at the net amount expected to be collected, thus eliminating the probable initial recognition threshold and instead reflecting the current estimate of all expected credit losses. The amendment also requires that credit losses relating to available-for-sale debt securities be recorded through an allowance for credit losses rather than a write-down, thus enabling the ability to record reversals of credit losses in current period net income. The update is effective for interim and annual reporting periods beginning after December 15, 2019. Early adoption is permitted . In August 2016, the FASB issued ASU 2016-15, “ Statement of Cash Flows – Classification of Certain Cash Receipts and Certain Cash Payments. ” The amendments address the diversity in practice in how certain cash receipts and cash payments are presented and classified in the statement of cash flows. The update is effective for interim and annual reporting periods beginning after December 15, 2017. Early adoption is permitted. The adoption of this guidance is not expected to have a material impact on our consolidated financial statements In October 2016, the FASB issued ASU 2016-16, “Income Taxes – Intra-Entity Transfers of Assets Other Than Inventory . ” The adoption of this guidance is not expected to have a material impact on our consolidated financial statements . In November 2016, the FASB issued ASU 2016-18 “Statement of Cash Flows – Restricted Cash. The amendments should be applied using a retrospective transition method to each period presented. The adoption of this guidance is not expected to have a material impact on our consolidated financial statements . In March 2017, the FASB issued ASU 2017-07, “ Compensation – Retirement Benefits: Improving the Presentation of Net Periodic Pension Cost and Net Periodic Post Retirement Benefit Cost . In May 2017, the FASB issued ASU 2017-09, “ Compensation – Stock Compensation: Scope of Modification Accounting

Inventories

Inventories	9 Months Ended
	Sep. 30, 2017
Inventory Disclosure [Abstract]
Inventories	NOTE 3: INVENTORIES The Company primarily uses the last-in, first-out (LIFO) method of valuing inventory. Interim LIFO calculations are based on actual inventory levels. Inventories, at stated LIFO value, were classified at September 30, 2017 and December 31, 2016 as follows: September 30, December 31, 2017 2016 (In millions) In process and finished products $ 691.7 $ 563.4 If current cost had been used to value inventories, such inventories would have been $79 million Inventories are stated at the lower of cost or market value. We record amounts required, if any, to reduce the carrying value of inventory to its lower of cost or market as a charge to cost of materials sold. The lower of cost or market n at September 30, 2017 and December 31, 2016, respectively. The Company has consignment inventory at certain customer locations, which totaled $11.2 million and $11.1 million at September 30, 2017 and December 31, 2016, respectively.

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	9 Months Ended
	Sep. 30, 2017
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	NOTE 4: GOODWILL AND OTHER INTANGIBLE ASSETS Goodwill, which represents the excess of cost over the fair value of net assets acquired, amounted to $115.3 million and $103.2 million Intangibles – Goodwill and Other, October 1, 2016, and it Other intangible assets with finite useful lives continue to be amortized over their useful lives. During the first nine months of 2017 we recognized $12.2 million in intangibles related to the acquisitions discussed in Note 5: Acquisitions. We review the recoverability of our long-lived assets whenever events or changes in circumstances indicate the carrying amount of such assets may not be recoverable.

Acquisitions

Acquisitions	9 Months Ended
	Sep. 30, 2017
Business Combinations [Abstract]
Acquisitions	NOTE 5: ACQUISITIONS On January 19, 2017, Ryerson Holding acquired The Laserflex Corporation (“Laserflex”), a privately-owned metal fabricator specializing in laser fabrication metal processing and welding with locations in Columbus, Ohio and Wellford, South Carolina. The acquisition is not material to our consolidated financial statements. On February 15, 2017, Ryerson Holding acquired Guy Metals, Inc. (“Guy Metals”), . The acquisition is not material to our consolidated financial statements.

Long-Term Debt

Long-Term Debt	9 Months Ended
	Sep. 30, 2017
Debt Disclosure [Abstract]
Long-Term Debt	NOTE 6: LONG-TERM DEBT Long-term debt consisted of the following at September 30, 2017 and December 31, 2016: September 30, December 31, 2017 2016 (In millions) Ryerson Credit Facility $ 385.1 $ 312.0 11.00% Senior Secured Notes due 2022 650.0 650.0 Foreign debt 19.5 19.2 Other debt 1.7 — Unamortized debt issuance costs and discounts (14.7 ) (17.7 ) Total debt 1,041.6 963.5 Less: Short-term foreign debt 19.5 19.2 Less: Other short-term debt 0.7 — Total long-term debt $ 1,021.4 $ 944.3 Ryerson Credit Facility O n November 16, 2016, Ryerson entered into an amendment with respect to its $1.0 billion revolving credit facility (as amended, the “Ryerson Credit Facility”), to reduce the total facility size from $1.0 billion (the “Old Credit Facility”) to $750 million, reduce the interest rate on outstanding borrowings by 25 basis points, reduce commitment fees on amounts not borrowed by 2.5 basis points, and to extend the maturity date to November 16, 2021. At September 30, 2017 , Ryerson had $385.1 million of outstanding borrowings, $15 million of letters of credit issued and $291 million available under The Ryerson Credit Facility has an allocation of $660 million to the Company’s subsidiaries in the United States and an allocation of $90 million to Ryerson Holding’s Canadian subsidiary that is a borrower. Amounts outstanding under the Ryerson Ryerson We attempt to minimize interest rate risk exposure through the utilization of interest rate swaps, which are derivative financial instruments. During March 2017, we entered into an interest rate swap to fix interest on $150 million of our floating rate debt under the Ryerson Credit Facility at a rate of 1.658% through March 2020. The swap has reset dates and critical terms that match our existing debt and the anticipated critical terms of future debt. The weighted average interest rate on the outstanding borrowings under the Ryerson Credit Facility including the interest rate swap was 2.7 percent and 2.2 percent at September 30, 2017 and December 31, 2016, respectively. Borrowings under the Ryerson The Ryerson Ryerson Ryerson The Ryerson Ryerson Ryerson The lenders under the Ryerson Ryerson Net proceeds of short-term borrowings that are reflected in the Consolidated Statements of Cash Flows represent borrowings under the Ryerson 2022 Notes On May 24, 2016, JT Ryerson issued $650 million in aggregate principal amount of the 2022 Notes (the “2022 Notes”). The 2022 Notes bear interest at a rate of 11.00% per annum. The 2022 Notes are fully and unconditionally guaranteed on a senior secured basis by all of our existing and future domestic subsidiaries that are co-borrowers or that have guarantee obligations under the Ryerson Credit Facility. The 2022 Notes and the related guarantees are secured by a first-priority security interest in substantially all of JT Ryerson’s and each guarantor’s present and future assets located in the United States (other than receivables, inventory, cash, deposit accounts and related general intangibles, certain other assets and proceeds thereof), subject to certain exceptions and customary permitted liens. The 2022 Notes and the related guarantees are also secured on a second-priority basis by a lien on the assets that secure JT Ryerson’s and the Company’s obligations under the Ryerson Credit Facility. The 2022 Notes will be redeemable, in whole or in part, at any time on or after May 15, 2019 at certain redemption prices. The redemption price for the 2022 Notes if redeemed during the twelve months beginning (i) May 15, 2019 is 105.50%, (ii) May 15, 2020 is 102.75%, and (iii) May 15, 2021 and thereafter is 100.00%. JT Ryerson may redeem some or all of the 2022 Notes before May 15, 2019 at a redemption price of 100.00% of the principal amount, plus accrued and unpaid interest, if any, to the redemption date, plus a “make-whole” premium. In addition, JT Ryerson may redeem up to 35% of the 2022 Notes before May 15, 2019 with respect to the 2022 Notes with the net cash proceeds from certain equity offerings at a price equal to 111.00%, with respect to the 2022 Notes, of the principal amount thereof, plus any accrued and unpaid interest, if any. JT Ryerson may be required to make an offer to purchase the 2022 Notes upon the sale of assets or upon a change of control. The 2022 Notes contain customary covenants that, among other things, limit, subject to certain exceptions, our ability, and the ability of our restricted subsidiaries, to incur additional indebtedness, pay dividends on our capital stock or repurchase our capital stock, make investments, sell assets, engage in acquisitions, mergers or consolidations or create liens or use assets as security in other transactions. Subject to certain exceptions, JT Ryerson may only pay dividends to Ryerson Holding to the extent of 50% of future net income, once prior losses are offset. The net proceeds from the issuance of the 2022 Notes, along with borrowings under the Ryerson Credit Facility, were used to (i) repurchase and/or redeem in full the $569.9 million balance of JT Ryerson’s 9% Senior Secured Notes due 2017 (the “2017 Notes”), plus accrued and unpaid interest thereon up to, but not including, the repayment date, (ii) repurchase $95 million of the 11.25% Senior Secured Notes due 2018 (the “2018 Notes”), and (iii) pay related fees, expenses and premiums. The Company applied the provisions of ASC 470-50, “ Modifications and Extinguishments” During the first nine months of 2016, a principal amount of $27.0 million of the 2018 Notes were repurchased for $18.2 million and retired, resulting in the recognition of an $8.8 million gain within other income and (expense), net on the Condensed Consolidated Statement of Comprehensive Income. Including the $16.0 million loss on the redemption of the $569.9 million balance of the 2017 Notes and repurchase of $95.0 million of the 2018 Notes, the Company recognized a total net loss of $7.2 million within other income and (expense), net on the Condensed Consolidated Statement of Comprehensive Income during the first nine months of 2016. Foreign Debt At September 30, 2017, Ryerson China’s foreign borrowings were $19.5 million, which were owed to banks in Asia at a weighted average interest rate of 3.9% per annum and secured by inventory and property, plant and equipment. At December 31, 2016, Ryerson China’s foreign borrowings were $19.2 million rate of 4.4% Availability under the foreign credit lines was $26 million at September 30, 2017 and December 31, 2016. Letters of credit issued by our foreign subsidiaries were $6 million at September 30, 2017 and December 31, 2016.

Employee Benefits

Employee Benefits	9 Months Ended
	Sep. 30, 2017
Compensation And Retirement Disclosure [Abstract]
Employee Benefits	NOTE 7: EMPLOYEE BENEFITS The following table summarizes the components of net periodic benefit (credit) cost for the three and nine month periods ended September 30, 2017 and 2016 for the Ryerson pension plans and postretirement benefits other than pension: Three Months Ended September 30, Pension Benefits Other Benefits 2017 2016 2017 2016 (In millions) Components of net periodic benefit (credit) cost Interest cost $ 6 $ 8 $ 1 $ 1 Expected return on assets (10 ) (12 ) — — Recognized actuarial (gain) loss 4 3 (2 ) (2 ) Amortization of prior service credit — — (1 ) (1 ) Net periodic benefit credit $ — $ (1 ) $ (2 ) $ (2 ) Nine Months Ended September 30, Pension Benefits Other Benefits 2017 2016 2017 2016 (In millions) Components of net periodic benefit (credit) cost Service cost $ 1 $ 1 $ — $ — Interest cost 19 22 2 2 Expected return on assets (31 ) (34 ) — — Recognized actuarial (gain) loss 11 9 (6 ) (6 ) Amortization of prior service credit — — (2 ) (2 ) Net periodic benefit credit $ — $ (2 ) $ (6 ) $ (6 ) Effective May 19, 2017, the Company froze the benefits accrued under a portion of its defined benefit pension plan for certain wage employees. The freeze impacted a significant number of active accruing participants, therefore, curtailment accounting was required and the pension plan was remeasured as of May 31, 2017. The remeasurement resulted in a curtailment loss of $0.1 million, which was recorded within warehousing, delivery, selling, general and administrative expense within the condensed Consolidated Statement of Comprehensive Income. As a result of the remeasurement, the discount rate decreased from 4.14% to 3.86% and the expected long-term rate of return on pension assets increased from 6.75% to 6.95% due to improved expectations of returns on pension assets. See our Annual Report on form 10-K for further information on these assumptions. The Company has contributed $16 million to the pension plan fund through the nine months ended September 30, 2017 and anticipates that it will have a minimum required pension contribution funding of approximately $5 million for the remaining three months of 2017.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2017
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	NOTE 8: COMMITMENTS AND CONTINGENCIES In October 2011, the United States Environmental Protection Agency (the “EPA”) named us as one of more than 100 businesses that may be a potentially responsible party for the Portland Harbor Superfund Site (the “PHS Site”). On January 6, 2017, the EPA issued its Record of Decision (“ROD”) regarding the site. The ROD includes a combination of dredging, capping and enhanced natural recovery that would take approximately thirteen years to construct plus additional time for monitored natural recovery, at an estimated present value cost of $1.05 billion. The EPA has not yet allocated responsibility for the contamination among the potentially responsible parties, including JT Ryerson. We do not currently have sufficient information available to us to determine whether the ROD will be executed as currently stated, whether and to what extent JT Ryerson may be held responsible for any of the identified contamination, and how much (if any) of the final plan’s costs might ultimately be allocated to JT Ryerson. Therefore, management cannot predict the ultimate outcome of this matter or estimate a range of potential loss at this time. There are various other claims and pending actions against the Company. The amount of liability, if any, for those claims and actions at September 30, 2017 is not determinable but, in the opinion of management, such liability, if any, will not have a material adverse effect on the Company’s financial position, results of operations or cash flows. We maintain liability insurance coverage to assist in protecting our assets from losses arising from or related to activities associated with business operations.

Derivatives and Fair Value Meas

Derivatives and Fair Value Measurements	9 Months Ended
	Sep. 30, 2017
Investments All Other Investments [Abstract]
Derivatives and Fair Value Measurements	NOTE 9: DERIVATIVES AND FAIR VALUE MEASUREMENTS Derivatives The Company is exposed to certain risks relating to its ongoing business operations. The primary risks managed by using derivative instruments are interest rate risk, foreign currency risk, and commodity price risk. Interest rate swaps are entered into to manage interest rate risk associated with the Company’s floating-rate borrowings. We use foreign currency exchange contracts to hedge our Canadian subsidiaries’ variability in cash flows from the forecasted payment of currencies other than the functional currency. From time to time, we may enter into fixed price sales contracts with our customers for certain of our inventory components, and in these instances, we may enter into metal commodity futures and options contracts to reduce volatility in the price of metals. We may also enter into natural gas and diesel fuel price swaps to manage the price risk of forecasted purchases of natural gas and diesel fuel. We have a receive variable, pay fixed, interest rate swap to manage the exposure to variable interest rates of the Ryerson Credit Facility. In March 2017, we entered into a forward agreement for $150 million of “pay fixed” interest at 1.658%, “receive variable” interest rate swap to manage the risk of increasing variable interest rates. The interest rate reset dates and critical terms match the terms of our existing debt and anticipated critical terms of future debt under the Ryerson Credit Facility. The fair value of the interest rate swap as of September 30, 2017 was zero. The Company currently does not account for its commodity contracts and foreign exchange derivative contracts as hedges but rather marks them to market with a corresponding offset to current earnings. The Company accounts for its interest rate swap as a cash flow hedge of floating-rate borrowings with changes in fair value being recorded in accumulated other comprehensive income. The Company regularly reviews the creditworthiness of its derivative counterparties and does not expect to incur a significant loss from the failure of any counterparties to perform under any agreements. The following table summarizes the location and fair value amount of our derivative instruments reported in our Condensed Consolidated Balance Sheets as of September 30, 2017 and December 31, 2016: Asset Derivatives Liability Derivatives Balance Sheet Location September 30, 2017 December 31, 2016 Balance Sheet Location September 30, 2017 December 31, 2016 (In millions) Derivatives not designated as hedging instruments under ASC 815 Foreign exchange contracts Prepaid expenses and other current assets $ — $ — Other accrued liabilities $ 0.1 $ — Metal commodity contracts Prepaid expenses and other current assets 2.2 2.0 Other accrued liabilities 2.3 0.2 Total derivatives $ 2.2 $ 2.0 $ 2.4 $ 0.2 As of September 30, 2017 and December 31, 2016, the Company’s foreign currency exchange contracts had a U.S. dollar notional amount of $2.1 million and $2.3 million tons has The following table summarizes the location and amount of gains and losses on derivatives not designated as hedging instruments reported in our Condensed Consolidated Statements of Comprehensive Income for the three and nine months ended September 30, 2017 and 2016: Amount of Gain/(Loss) Recognized in Income on Derivatives Derivatives not designated as hedging instruments Location of Gain/(Loss) Recognized in Income Three Months Ended September 30, Nine Months Ended September 30, under ASC 815 on Derivatives 2017 2016 2017 2016 (In millions) Metal commodity contracts Cost of materials sold $ 0.8 $ 1.7 $ 2.6 $ 9.0 Diesel fuel commodity contracts Warehousing, delivery, selling, general and administrative — — — 0.1 Foreign exchange contracts Other income and (expense), net — — (0.1 ) (0.1 ) Total $ 0.8 $ 1.7 $ 2.5 $ 9.0 The following table summarizes the location and amount of gains and losses on derivatives designated as hedging instruments reported in our Condensed Consolidated Statements of Comprehensive Income for the three and nine months ended September 30, 2017 and 2016: Amount of Gain/(Loss) Reclassified from Accumulated Other Comprehensive Income into Income Derivatives designated as hedging instruments Location of Gain/(Loss) Recognized in Income Three Months Ended September 30, Nine Months Ended September 30, under ASC 815 on Derivatives 2017 2016 2017 2016 (In millions) Interest Rate Swaps Interest and other expense on debt $ (0.1 ) $ — $ (0.5 ) $ — As of September 30, 2017, the portion of the interest rate swap fair value that would be reclassified into earnings during the next 12 months as interest expense is approximately $0.3 million. Fair Value Measurements To increase consistency and comparability in fair value measurements, ASC 820 establishes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value into three levels as follows: 1. Level 1 – quoted prices (unadjusted) in active markets for identical assets or liabilities that the Company has the ability to access as of the reporting date. 2. Level 2 – inputs other than quoted prices included within Level 1 that are directly observable for the asset or liability or indirectly observable through corroboration with observable market data. 3. Level 3 – unobservable inputs, such as internally-developed pricing models for the asset or liability due to little or no market activity for the asset or liability. The following table presents assets and liabilities measured and recorded at fair value on our Condensed Consolidated Balance Sheet on a recurring basis and their level within the fair value hierarchy as of September 30, 2017: At September 30, 2017 Level 1 Level 2 Level 3 (In millions) Assets Prepaid and other current assets: Common stock—available-for-sale investment $ 0.1 $ — $ — Derivatives: Derivatives not designated as hedging instruments under ASC 815: Metal commodity contracts $ — $ 2.2 $ — Liabilities Derivatives: Derivatives not designated as hedging instruments under ASC 815: Foreign Exchange Contracts $ — $ 0.1 $ — Metal commodity contracts — 2.3 — Total derivatives liabilities $ — $ 2.4 $ — The following table presents assets and liabilities measured and recorded at fair value on our Condensed Consolidated Balance Sheet on a recurring basis and their level within the fair value hierarchy as of December 31, 2016: At December 31, 2016 Level 1 Level 2 Level 3 (In millions) Assets Prepaid and other current assets: Common stock – available-for-sale investment $ 0.4 $ — $ — Derivatives: Derivatives not designated as hedging instruments under ASC 815: Metal commodity contracts $ — $ 2.0 $ — Liabilities Derivatives: Derivatives not designated as hedging instruments under ASC 815: Metal commodity contracts $ — $ 0.2 $ — The fair value of each derivative contract is determined using Level 2 inputs and the market approach valuation technique, as described in ASC 820. The Company has various commodity derivatives to lock in nickel and zinc prices for varying time periods. The fair value of these derivatives is determined based on the spot price each individual contract was purchased at and compared with the one-month daily average actual spot price on the London Metals Exchange for nickel and zinc on the valuation date. The Company also has commodity derivatives to lock in hot roll coil, iron ore, and aluminum prices for varying time periods. The fair value of hot roll coil, iron ore, and aluminum derivatives is determined based on the spot price each individual contract was purchased at and compared with the one-month daily average actual spot price on the Chicago Mercantile Exchange, the Singapore Exchange, and the London Metals Exchange, respectively, for the commodity on the valuation date. The Company has various commodity derivatives to lock in diesel prices for varying time periods. The fair value of these derivatives is determined based on the spot price each individual contract was purchased at and compared with the one-month daily average actual spot price of the Platts Index for Gulf Coast Ultra Low Sulfur Diesel on the valuation date. In addition, the Company has numerous foreign exchange contracts to hedge our Canadian subsidiaries’ variability in cash flows from the forecasted payment of currencies other than the functional currency, the Canadian dollar. The Company defines the fair value of foreign exchange contracts as the amount of the difference between the contracted and current market value at the end of the period. The Company estimates the current market value of foreign exchange contracts by obtaining month-end market quotes of foreign exchange rates and forward rates for contracts with similar terms. The Company uses the exchange rates provided by Reuters. Each commodity and foreign exchange contract term varies in the number of months, but in general contracts are between 3 to 12 months The carrying and estimated fair values of our financial instruments at September 30, 2017 and December 31, 2016 were as follows: At September 30, 2017 At December 31, 2016 Carrying Amount Fair Value Carrying Amount Fair Value (In millions) Cash and cash equivalents $ 73.6 $ 73.6 $ 80.7 $ 80.7 Restricted cash 1.3 1.3 1.0 1.0 Receivables less provision for allowances, claims and doubtful accounts 425.4 425.4 326.0 326.0 Accounts payable 362.5 362.5 230.4 230.4 Long-term debt, including current portion 1,041.6 1,120.7 963.5 1,034.2 The estimated fair value of the Company’s cash and cash equivalents, receivables less provision for allowances, claims and doubtful accounts and accounts payable approximate their carrying amounts due to the short-term nature of these financial instruments. The estimated fair value of the Company’s long-term debt and the current portions thereof is determined by using quoted market prices of Company debt securities (Level 2 inputs). Assets Held for Sale The Company had zero and $3.6 million of assets held for sale, classified within “prepaid expenses and other current assets,” as of September 30, 2017 and December 31, 2016, respectively. The fair values less costs to sell of long-lived assets held for sale are assessed each reporting period that they remain classified as held for sale. Any increase or decrease in the held for sale long-lived asset’s fair value less cost to sell is reported as an adjustment to its carrying amount, except that the adjusted carrying amount cannot exceed the carrying amount of the long-lived asset at the time it was initially classified as held for sale. The fair values of each property were determined based on appraisals obtained from a third-party, pending sales contracts, or recent listing agreements with third-party brokerage firms (Level 2 inputs). The following table presents those assets that were measured and recorded at fair value on our Condensed Consolidated Balance Sheet on a non-recurring basis and their level within the fair value hierarchy at December 31, 2016: At December 31, 2016 Level 1 Level 2 Level 3 (In millions) Assets Prepaid expenses and other current assets – assets held for sale $ — $ 3.6 $ — Available-For-Sale Investments The Company has classified investments made during 2010 and 2012 as available-for-sale at the time of their purchase. Investments classified as available-for-sale are recorded at fair value with the related unrealized gains and losses included in accumulated other comprehensive income. Management evaluates investments in an unrealized loss position on whether an other-than-temporary impairment has occurred on a periodic basis. Factors considered by management in assessing whether an other-than-temporary impairment has occurred include: the nature of the investment; whether the decline in fair value is attributable to specific adverse conditions affecting the investment; the financial condition of the investee; the severity and the duration of the impairment; and whether we intend to sell the investment or will be required to sell the investment before recovery of its amortized cost basis. When it is determined that an other-than-temporary impairment has occurred, the investment is written down to its market value at the end of the period in which it is determined that an other-than-temporary decline has occurred. During the second quarter of 2017 the financial condition of the investee declined, therefore, management determined that an other-than-temporary impairment occurred and thus recognized a $0.2 million impairment charge within other income and (expense), net in the second quarter of 2017. As of September 30, 2017, the investment has been in an unrealized loss position from its adjusted cost basis for three months. Management does not currently intend to sell the investment before recovery of its adjusted cost basis. Realized gains and losses are recorded within the Condensed Consolidated Statement of Comprehensive Income upon sale of the security and are based on specific identification. The Company’s available-for-sale securities as of September 30, 2017 can be summarized as follows: At September 30, 2017 Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (In millions) Common stock $ 0.2 $ — $ (0.1 ) $ 0.1 The Company’s available-for-sale securities as of December 31, 2016 can be summarized as follows: At December 31, 2016 Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (In millions) Common stock $ 0.4 $ — $ — $ 0.4 There is no maturity date for these investments and there have been no sales

Stockholders' Equity (Deficit),

Stockholders' Equity (Deficit), Accumulated Other Comprehensive Income (Loss) and Redeemable Noncontrolling Interest	9 Months Ended
	Sep. 30, 2017
Equity [Abstract]
Stockholders' Equity (Deficit), Accumulated Other Comprehensive Income (Loss) and Redeemable Noncontrolling Interest	NOTE 10: STOCKHOLDERS’ EQUITY (DEFICIT), ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) AND REDEEMABLE NONCONTROLLING INTEREST The following table details changes in these accounts: Ryerson Holding Corporation Stockholders' Equity (Deficit) Accumulated Other Comprehensive Income (Loss) Common Stock Treasury Stock Capital in Excess of Par Value Accumulated Deficit Foreign Currency Translation Benefit Plan Liabilities Unrealized Gain (Loss) on Available- For-Sale Investments Non-controlling Interest Total Equity Shares Dollars Shares Dollars Dollars Dollars Dollars Dollars Dollars Dollars Dollars (In millions, except shares in thousands) Balance at January 1, 2017 37,345 $ 0.4 213 $ (6.6 ) $ 375.4 $ (112.2 ) $ (50.2 ) $ (258.7 ) $ 1.1 $ 1.5 $ (49.3 ) Net income — — — — — 17.1 — — — 0.6 17.7 Foreign currency translation — — — — — — 5.5 — — 0.3 5.8 Gain on intra-entity foreign currency transactions — — — — — — 3.6 — — — 3.6 Changes in defined benefit pension and other post-retirement benefit plans, net of tax of $3.9 — — — — — — — 6.4 — — 6.4 Unrealized loss on available-for-sale investment, net of tax of $0.1 — — — — — — — — (0.2 ) — (0.2 ) Other than temporary impairment, net of tax of $0.1 — — — — — — — — 0.1 — 0.1 Stock-based compensation expense 76 — — — 1.5 — — — — — 1.5 Balance at September 30, 2017 37,421 $ 0.4 213 $ (6.6 ) $ 376.9 $ (95.1 ) $ (41.1 ) $ (252.3 ) $ 1.0 $ 2.4 $ (14.4 ) The following table details changes in accumulated other comprehensive income (loss), net of tax, for the nine months ended September 30, 2017: Changes in Accumulated Other Comprehensive Income (Loss) by Component Foreign Currency Translation Benefit Plan Liabilities Available- For-Sale Investments Cash Flow Hedge - Interest Rate Swap (In millions) Balance at January 1, 2017 $ (50.2 ) $ (258.7 ) $ 1.1 $ — Other comprehensive income (loss) before reclassifications 9.1 7.8 (0.2 ) (0.3 ) Amounts reclassified from accumulated other comprehensive income (loss) — (1.4 ) 0.1 0.3 Net current-period other comprehensive income (loss) 9.1 6.4 (0.1 ) — Balance at September 30, 2017 $ (41.1 ) $ (252.3 ) $ 1.0 $ — The following table details the reclassifications out of accumulated other comprehensive income (loss) for the three and nine month periods ended September 30, 2017: Reclassifications Out of Accumulated Other Comprehensive Income (Loss) Amount reclassified from Accumulated Other Comprehensive Income (Loss) Three Months Ended Nine Months Ended Affected line item in the Condensed Details about Accumulated Other September 30, 2017 Consolidated Statements of Comprehensive Income (Loss) Components (In millions) Comprehensive Income Other-than-temporary impairment Other-than-temporary impairment charge $ — $ 0.2 Other income and (expense), net Tax benefit — (0.1 ) Net of tax $ — $ 0.1 Cash flow hedge - interest rate swap Realized swap interest loss $ 0.1 $ 0.5 Interest and other expense on debt Tax benefit (0.1 ) (0.2 ) Net of tax $ — $ 0.3 Amortization of defined benefit pension and other post- retirement benefit plan items Actuarial (gain) loss $ 1.9 $ (0.2 ) Warehousing, delivery, selling, general and administrative Prior service credits (0.8 ) (2.3 ) Warehousing, delivery, selling, general and administrative Total before tax 1.1 (2.5 ) Tax provision (benefit) (0.3 ) 1.1 Net of tax $ 0.8 $ (1.4 ) The following table details the reclassifications out of accumulated other comprehensive income (loss) for the three and nine month periods ended September 30, 2016: Reclassifications Out of Accumulated Other Comprehensive Income (Loss) Amount reclassified from Accumulated Other Comprehensive Income (Loss) Three Months Ended Nine Months Ended Affected line item in the Condensed Details about Accumulated Other September 30, 2016 Consolidated Statements of Comprehensive Income (Loss) Components (In millions) Comprehensive Income Other-than-temporary impairment Other-than-temporary impairment charge $ — $ 2.8 Other income and (expense), net Tax benefit — (1.1 ) Net of tax $ — $ 1.7 Amortization of defined benefit pension and other post- retirement benefit plan items Actuarial loss $ 1.1 $ 3.4 Warehousing, delivery, selling, general and administrative Prior service credits (0.7 ) (2.2 ) Warehousing, delivery, selling, general and administrative Total before tax 0.4 1.2 Tax benefit (0.1 ) (0.4 ) Net of tax $ 0.3 $ 0.8

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2017
Income Tax Disclosure [Abstract]
Income Taxes	NOTE 11: INCOME TAXES For the three months ended September 30, 2017, the Company recorded an income tax benefit of For the nine months ended September 30, 2017, the Company recorded income tax expense of $5.3 million compared to $14.0 million in the prior year. The $5.3 million tax expense for the nine months ended September 30, 2017 primarily represents taxes at federal and local statutory rates where the Company operates, but generally excludes any tax benefit for losses in jurisdictions with historical losses . In accordance with ASC 740, “ Income Taxes this determination, we analyze, among other things, our recent history of earnings, the nature and timing of reversing book-tax temporary differences, tax planning strategies and future income. The Company maintains a valuation allowance on certain foreign and U.S. federal and state deferred tax assets until such time as in management’s judgment, considering all available positive and negative evidence, the Company determines that these deferred tax assets are more likely than not realizable. The valuation allowance is reviewed quarterly and will be maintained until sufficient positive evidence exists to support the reversal of some or all of the valuation allowance. The valuation allowance was $19.5 million and $20.0 million at September 30, 2017 and December 31, 2016, respectively.

Earnings Per Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2017
Earnings Per Share [Abstract]
Earnings Per Share	NOTE 12: EARNINGS PER SHARE Basic earnings per share attributable to Ryerson Holding’s common stock is determined based on earnings for the period divided by the weighted average number of common shares outstanding during the period. Diluted earnings per share attributable to Ryerson Holding’s common stock considers the effect of potential common shares, unless inclusion of the potential common shares would have an antidilutive effect. Stock-based awards with a grant price greater than the average market price of our common stock are excluded from the calculation of diluted earnings per share because the impact would The following table sets forth the calculation of basic and diluted earnings per share: Three Months Ended September 30, Nine Months Ended September 30, Basic and diluted earnings per share 2017 2016 2017 2016 (In millions, except share and per share data) Numerator: Net income attributable to Ryerson Holding Corporation $ 1.7 $ 8.2 $ 17.1 $ 27.3 Denominator: Weighted average shares outstanding 37,190,927 35,804,069 37,165,552 33,343,503 Dilutive effect of stock-based awards 103,781 161,615 125,041 92,009 Weighted average shares outstanding adjusted for dilutive securities 37,294,708 35,965,684 37,290,593 33,435,512 Earnings per share Basic and diluted $ 0.05 $ 0.23 $ 0.46 $ 0.82

Summary of Accounting and Finan

Summary of Accounting and Financial Policies (Policies)	9 Months Ended
	Sep. 30, 2017
Accounting Policies [Abstract]
Income Taxes	In accordance with ASC 740, “ Income Taxes this determination, we analyze, among other things, our recent history of earnings, the nature and timing of reversing book-tax temporary differences, tax planning strategies and future income. The Company maintains a valuation allowance on certain foreign and U.S. federal and state deferred tax assets until such time as in management’s judgment, considering all available positive and negative evidence, the Company determines that these deferred tax assets are more likely than not realizable. The valuation allowance is reviewed quarterly and will be maintained until sufficient positive evidence exists to support the reversal of some or all of the valuation allowance. The valuation allowance was $19.5 million and $20.0 million at September 30, 2017 and December 31, 2016, respectively.

Financial Statements (Tables)

Financial Statements (Tables)	9 Months Ended
	Sep. 30, 2017
Segment Reporting [Abstract]
Percentage of Sales by Major Product Lines	The following table shows our percentage of sales by major product lines for the three and nine months ended September 30, 2017 and 2016, respectively: Three Months Ended Nine Months Ended September 30, September 30, Product Line 2017 2016 2017 2016 Carbon Steel Flat 29 % 29 % 28 % 27 % Carbon Steel Plate 10 9 10 9 Carbon Steel Long 12 13 12 14 Stainless Steel Flat 17 17 18 16 Stainless Steel Plate 4 4 4 4 Stainless Steel Long 4 3 4 4 Aluminum Flat 16 16 15 16 Aluminum Plate 3 3 3 3 Aluminum Long 4 4 4 5 Other 1 2 2 2 Total 100 % 100 % 100 % 100 %

Inventories (Tables)

Inventories (Tables)	9 Months Ended
	Sep. 30, 2017
Inventory Disclosure [Abstract]
Schedule of Inventories	Inventories, at stated LIFO value, were classified at September 30, 2017 and December 31, 2016 as follows: September 30, December 31, 2017 2016 (In millions) In process and finished products $ 691.7 $ 563.4

Long-Term Debt (Tables)

Long-Term Debt (Tables)	9 Months Ended
	Sep. 30, 2017
Debt Disclosure [Abstract]
Long-Term Debt	Long-term debt consisted of the following at September 30, 2017 and December 31, 2016: September 30, December 31, 2017 2016 (In millions) Ryerson Credit Facility $ 385.1 $ 312.0 11.00% Senior Secured Notes due 2022 650.0 650.0 Foreign debt 19.5 19.2 Other debt 1.7 — Unamortized debt issuance costs and discounts (14.7 ) (17.7 ) Total debt 1,041.6 963.5 Less: Short-term foreign debt 19.5 19.2 Less: Other short-term debt 0.7 — Total long-term debt $ 1,021.4 $ 944.3

Employee Benefits (Tables)

Employee Benefits (Tables)	9 Months Ended
	Sep. 30, 2017
Compensation And Retirement Disclosure [Abstract]
Components of Net Periodic Benefit (Credit) Cost	The following table summarizes the components of net periodic benefit (credit) cost for the three and nine month periods ended September 30, 2017 and 2016 for the Ryerson pension plans and postretirement benefits other than pension: Three Months Ended September 30, Pension Benefits Other Benefits 2017 2016 2017 2016 (In millions) Components of net periodic benefit (credit) cost Interest cost $ 6 $ 8 $ 1 $ 1 Expected return on assets (10 ) (12 ) — — Recognized actuarial (gain) loss 4 3 (2 ) (2 ) Amortization of prior service credit — — (1 ) (1 ) Net periodic benefit credit $ — $ (1 ) $ (2 ) $ (2 ) Nine Months Ended September 30, Pension Benefits Other Benefits 2017 2016 2017 2016 (In millions) Components of net periodic benefit (credit) cost Service cost $ 1 $ 1 $ — $ — Interest cost 19 22 2 2 Expected return on assets (31 ) (34 ) — — Recognized actuarial (gain) loss 11 9 (6 ) (6 ) Amortization of prior service credit — — (2 ) (2 ) Net periodic benefit credit $ — $ (2 ) $ (6 ) $ (6 )

Derivatives and Fair Value Me23

Derivatives and Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2017
Investments All Other Investments [Abstract]
Location and Fair Value Amount of Derivative Instruments	The following table summarizes the location and fair value amount of our derivative instruments reported in our Condensed Consolidated Balance Sheets as of September 30, 2017 and December 31, 2016: Asset Derivatives Liability Derivatives Balance Sheet Location September 30, 2017 December 31, 2016 Balance Sheet Location September 30, 2017 December 31, 2016 (In millions) Derivatives not designated as hedging instruments under ASC 815 Foreign exchange contracts Prepaid expenses and other current assets $ — $ — Other accrued liabilities $ 0.1 $ — Metal commodity contracts Prepaid expenses and other current assets 2.2 2.0 Other accrued liabilities 2.3 0.2 Total derivatives $ 2.2 $ 2.0 $ 2.4 $ 0.2
Location and Amount of Gains and Losses on Derivatives Not Designated as Hedging Instruments Reported in Condensed Consolidated Statements of Comprehensive Income	The following table summarizes the location and amount of gains and losses on derivatives not designated as hedging instruments reported in our Condensed Consolidated Statements of Comprehensive Income for the three and nine months ended September 30, 2017 and 2016: Amount of Gain/(Loss) Recognized in Income on Derivatives Derivatives not designated as hedging instruments Location of Gain/(Loss) Recognized in Income Three Months Ended September 30, Nine Months Ended September 30, under ASC 815 on Derivatives 2017 2016 2017 2016 (In millions) Metal commodity contracts Cost of materials sold $ 0.8 $ 1.7 $ 2.6 $ 9.0 Diesel fuel commodity contracts Warehousing, delivery, selling, general and administrative — — — 0.1 Foreign exchange contracts Other income and (expense), net — — (0.1 ) (0.1 ) Total $ 0.8 $ 1.7 $ 2.5 $ 9.0
Location and Amount of Gains and Losses on Derivatives Designated as Hedging Instruments Reported in Condensed Consolidated Statements of Comprehensive Income	The following table summarizes the location and amount of gains and losses on derivatives designated as hedging instruments reported in our Condensed Consolidated Statements of Comprehensive Income for the three and nine months ended September 30, 2017 and 2016: Amount of Gain/(Loss) Reclassified from Accumulated Other Comprehensive Income into Income Derivatives designated as hedging instruments Location of Gain/(Loss) Recognized in Income Three Months Ended September 30, Nine Months Ended September 30, under ASC 815 on Derivatives 2017 2016 2017 2016 (In millions) Interest Rate Swaps Interest and other expense on debt $ (0.1 ) $ — $ (0.5 ) $ —
Assets and Liabilities Measured and Recorded at Fair Value	The following table presents assets and liabilities measured and recorded at fair value on our Condensed Consolidated Balance Sheet on a recurring basis and their level within the fair value hierarchy as of September 30, 2017: At September 30, 2017 Level 1 Level 2 Level 3 (In millions) Assets Prepaid and other current assets: Common stock—available-for-sale investment $ 0.1 $ — $ — Derivatives: Derivatives not designated as hedging instruments under ASC 815: Metal commodity contracts $ — $ 2.2 $ — Liabilities Derivatives: Derivatives not designated as hedging instruments under ASC 815: Foreign Exchange Contracts $ — $ 0.1 $ — Metal commodity contracts — 2.3 — Total derivatives liabilities $ — $ 2.4 $ — The following table presents assets and liabilities measured and recorded at fair value on our Condensed Consolidated Balance Sheet on a recurring basis and their level within the fair value hierarchy as of December 31, 2016: At December 31, 2016 Level 1 Level 2 Level 3 (In millions) Assets Prepaid and other current assets: Common stock – available-for-sale investment $ 0.4 $ — $ — Derivatives: Derivatives not designated as hedging instruments under ASC 815: Metal commodity contracts $ — $ 2.0 $ — Liabilities Derivatives: Derivatives not designated as hedging instruments under ASC 815: Metal commodity contracts $ — $ 0.2 $ —
Carrying and Estimated Fair Values of Financial Instruments	The carrying and estimated fair values of our financial instruments at September 30, 2017 and December 31, 2016 were as follows: At September 30, 2017 At December 31, 2016 Carrying Amount Fair Value Carrying Amount Fair Value (In millions) Cash and cash equivalents $ 73.6 $ 73.6 $ 80.7 $ 80.7 Restricted cash 1.3 1.3 1.0 1.0 Receivables less provision for allowances, claims and doubtful accounts 425.4 425.4 326.0 326.0 Accounts payable 362.5 362.5 230.4 230.4 Long-term debt, including current portion 1,041.6 1,120.7 963.5 1,034.2
Assets and Liabilities Measured and Recorded at Fair Value on Non-Recurring Basis	The following table presents those assets that were measured and recorded at fair value on our Condensed Consolidated Balance Sheet on a non-recurring basis and their level within the fair value hierarchy at December 31, 2016: At December 31, 2016 Level 1 Level 2 Level 3 (In millions) Assets Prepaid expenses and other current assets – assets held for sale $ — $ 3.6 $ —
Available-for-sale Securities	The Company’s available-for-sale securities as of September 30, 2017 can be summarized as follows: At September 30, 2017 Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (In millions) Common stock $ 0.2 $ — $ (0.1 ) $ 0.1 The Company’s available-for-sale securities as of December 31, 2016 can be summarized as follows: At December 31, 2016 Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (In millions) Common stock $ 0.4 $ — $ — $ 0.4

Stockholders' Equity (Deficit24

Stockholders' Equity (Deficit), Accumulated Other Comprehensive Income (Loss) and Redeemable Noncontrolling Interest (Tables)	9 Months Ended
	Sep. 30, 2017
Equity [Abstract]
Change in Stockholders' Equity (Deficit), Accumulated Other Comprehensive Income (Loss) and Redeemable Noncontrolling Interest	The following table details changes in these accounts: Ryerson Holding Corporation Stockholders' Equity (Deficit) Accumulated Other Comprehensive Income (Loss) Common Stock Treasury Stock Capital in Excess of Par Value Accumulated Deficit Foreign Currency Translation Benefit Plan Liabilities Unrealized Gain (Loss) on Available- For-Sale Investments Non-controlling Interest Total Equity Shares Dollars Shares Dollars Dollars Dollars Dollars Dollars Dollars Dollars Dollars (In millions, except shares in thousands) Balance at January 1, 2017 37,345 $ 0.4 213 $ (6.6 ) $ 375.4 $ (112.2 ) $ (50.2 ) $ (258.7 ) $ 1.1 $ 1.5 $ (49.3 ) Net income — — — — — 17.1 — — — 0.6 17.7 Foreign currency translation — — — — — — 5.5 — — 0.3 5.8 Gain on intra-entity foreign currency transactions — — — — — — 3.6 — — — 3.6 Changes in defined benefit pension and other post-retirement benefit plans, net of tax of $3.9 — — — — — — — 6.4 — — 6.4 Unrealized loss on available-for-sale investment, net of tax of $0.1 — — — — — — — — (0.2 ) — (0.2 ) Other than temporary impairment, net of tax of $0.1 — — — — — — — — 0.1 — 0.1 Stock-based compensation expense 76 — — — 1.5 — — — — — 1.5 Balance at September 30, 2017 37,421 $ 0.4 213 $ (6.6 ) $ 376.9 $ (95.1 ) $ (41.1 ) $ (252.3 ) $ 1.0 $ 2.4 $ (14.4 )
Changes in Accumulated Other Comprehensive Income/(Loss) Net of Tax by Component	The following table details changes in accumulated other comprehensive income (loss), net of tax, for the nine months ended September 30, 2017: Changes in Accumulated Other Comprehensive Income (Loss) by Component Foreign Currency Translation Benefit Plan Liabilities Available- For-Sale Investments Cash Flow Hedge - Interest Rate Swap (In millions) Balance at January 1, 2017 $ (50.2 ) $ (258.7 ) $ 1.1 $ — Other comprehensive income (loss) before reclassifications 9.1 7.8 (0.2 ) (0.3 ) Amounts reclassified from accumulated other comprehensive income (loss) — (1.4 ) 0.1 0.3 Net current-period other comprehensive income (loss) 9.1 6.4 (0.1 ) — Balance at September 30, 2017 $ (41.1 ) $ (252.3 ) $ 1.0 $ —
Reclassifications Out of Accumulated Other Comprehensive Income (Loss)	The following table details the reclassifications out of accumulated other comprehensive income (loss) for the three and nine month periods ended September 30, 2017: Reclassifications Out of Accumulated Other Comprehensive Income (Loss) Amount reclassified from Accumulated Other Comprehensive Income (Loss) Three Months Ended Nine Months Ended Affected line item in the Condensed Details about Accumulated Other September 30, 2017 Consolidated Statements of Comprehensive Income (Loss) Components (In millions) Comprehensive Income Other-than-temporary impairment Other-than-temporary impairment charge $ — $ 0.2 Other income and (expense), net Tax benefit — (0.1 ) Net of tax $ — $ 0.1 Cash flow hedge - interest rate swap Realized swap interest loss $ 0.1 $ 0.5 Interest and other expense on debt Tax benefit (0.1 ) (0.2 ) Net of tax $ — $ 0.3 Amortization of defined benefit pension and other post- retirement benefit plan items Actuarial (gain) loss $ 1.9 $ (0.2 ) Warehousing, delivery, selling, general and administrative Prior service credits (0.8 ) (2.3 ) Warehousing, delivery, selling, general and administrative Total before tax 1.1 (2.5 ) Tax provision (benefit) (0.3 ) 1.1 Net of tax $ 0.8 $ (1.4 ) The following table details the reclassifications out of accumulated other comprehensive income (loss) for the three and nine month periods ended September 30, 2016: Reclassifications Out of Accumulated Other Comprehensive Income (Loss) Amount reclassified from Accumulated Other Comprehensive Income (Loss) Three Months Ended Nine Months Ended Affected line item in the Condensed Details about Accumulated Other September 30, 2016 Consolidated Statements of Comprehensive Income (Loss) Components (In millions) Comprehensive Income Other-than-temporary impairment Other-than-temporary impairment charge $ — $ 2.8 Other income and (expense), net Tax benefit — (1.1 ) Net of tax $ — $ 1.7 Amortization of defined benefit pension and other post- retirement benefit plan items Actuarial loss $ 1.1 $ 3.4 Warehousing, delivery, selling, general and administrative Prior service credits (0.7 ) (2.2 ) Warehousing, delivery, selling, general and administrative Total before tax 0.4 1.2 Tax benefit (0.1 ) (0.4 ) Net of tax $ 0.3 $ 0.8

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2017
Earnings Per Share [Abstract]
Calculation of Basic and Diluted Earnings Per Share	The following table sets forth the calculation of basic and diluted earnings per share: Three Months Ended September 30, Nine Months Ended September 30, Basic and diluted earnings per share 2017 2016 2017 2016 (In millions, except share and per share data) Numerator: Net income attributable to Ryerson Holding Corporation $ 1.7 $ 8.2 $ 17.1 $ 27.3 Denominator: Weighted average shares outstanding 37,190,927 35,804,069 37,165,552 33,343,503 Dilutive effect of stock-based awards 103,781 161,615 125,041 92,009 Weighted average shares outstanding adjusted for dilutive securities 37,294,708 35,965,684 37,290,593 33,435,512 Earnings per share Basic and diluted $ 0.05 $ 0.23 $ 0.46 $ 0.82

Financial Statements - Addition

Financial Statements - Additional Information (Detail)	Sep. 30, 2017shares
Accounting Policies [Abstract]
Parent company shares owned by affiliates	21,037,500
Parent company percentage owned by affiliates	57.00%

Financial Statements - Percenta

Financial Statements - Percentage of Sales by Major Product Line (Detail) - Product Concentration Risk - Sales Revenue Product Line	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Revenue from External Customer [Line Items]
Concentration risk percentage	100.00%	100.00%	100.00%	100.00%
Carbon Steel Flat [Member]
Revenue from External Customer [Line Items]
Concentration risk percentage	29.00%	29.00%	28.00%	27.00%
Carbon Steel Plate [Member]
Revenue from External Customer [Line Items]
Concentration risk percentage	10.00%	9.00%	10.00%	9.00%
Carbon Steel Long [Member]
Revenue from External Customer [Line Items]
Concentration risk percentage	12.00%	13.00%	12.00%	14.00%
Stainless Steel Flat [Member]
Revenue from External Customer [Line Items]
Concentration risk percentage	17.00%	17.00%	18.00%	16.00%
Stainless Steel Plate [Member]
Revenue from External Customer [Line Items]
Concentration risk percentage	4.00%	4.00%	4.00%	4.00%
Stainless Steel Long [Member]
Revenue from External Customer [Line Items]
Concentration risk percentage	4.00%	3.00%	4.00%	4.00%
Aluminum Flat [Member]
Revenue from External Customer [Line Items]
Concentration risk percentage	16.00%	16.00%	15.00%	16.00%
Aluminum Plate [Member]
Revenue from External Customer [Line Items]
Concentration risk percentage	3.00%	3.00%	3.00%	3.00%
Aluminum Long [Member]
Revenue from External Customer [Line Items]
Concentration risk percentage	4.00%	4.00%	4.00%	5.00%
Other [Member]
Revenue from External Customer [Line Items]
Concentration risk percentage	1.00%	2.00%	2.00%	2.00%

Recent Accounting Pronounceme28

Recent Accounting Pronouncements - Additional Information (Detail) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Common Stock [Member]
Recent Accounting Pronouncements [Line Items]
Available for sale investment	$ 0.1	$ 0.4

Inventories - Schedule of Inven

Inventories - Schedule of Inventories (Detail) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Inventory Disclosure [Abstract]
In process and finished products	$ 691.7	$ 563.4

Inventories - Additional Inform

Inventories - Additional Information (Detail) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Inventory Disclosure [Abstract]
Amount by which current cost used to value inventories is lower than LIFO valued inventories	$ 79	$ 115
Inventories accounted under the LIFO method	89.00%	90.00%
Lower of cost or market reserve	$ 0	$ 23.9
Consignment inventory	$ 11.2	$ 11.1

Goodwill and Other Intangible31

Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill	$ 115,300,000	$ 103,200,000
Impairment charge		$ 0
Goodwill recognized from business acquisitions	12,100,000
Intangibles assets recognized from business acquisitions	$ 12,200,000

Acquisitions - Additional Infor

Acquisitions - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2017
The Laserflex Corporation [Member]
Business Acquisition [Line Items]
Effective date of acquisition	Jan. 19, 2017
Description of business acquisition	On January 19, 2017, Ryerson Holding acquired The Laserflex Corporation (“Laserflex”), a privately-owned metal fabricator specializing in laser fabrication metal processing and welding with locations in Columbus, Ohio and Wellford, South Carolina.
Guy Metals, Inc [Member]
Business Acquisition [Line Items]
Effective date of acquisition	Feb. 15, 2017
Description of business acquisition	On February 15, 2017, Ryerson Holding acquired Guy Metals, Inc. (“Guy Metals”), a privately-owned metal service center company located in Hammond, Wisconsin.

Long-Term Debt - Long-Term Debt

Long-Term Debt - Long-Term Debt (Detail) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Foreign debt	$ 19.5	$ 19.2
Other debt	1.7
Unamortized debt issuance costs and discounts	(14.7)	(17.7)
Total debt	1,041.6	963.5
Less: Other short-term debt	0.7
Total long-term debt	1,021.4	944.3
2022 Notes [Member]
Debt Instrument [Line Items]
Senior Notes	650	650
Ryerson Credit Facility [Member]
Debt Instrument [Line Items]
Ryerson Credit Facility	$ 385.1	$ 312

Long-Term Debt - Ryerson Credit

Long-Term Debt - Ryerson Credit Facility - Additional Information (Detail) - USD ($)	Nov. 16, 2016	Sep. 30, 2017	Mar. 31, 2017	Dec. 31, 2016
Ryerson Credit Facility [Member]
Debt Instrument [Line Items]
Revolving credit facility maximum borrowing capacity	$ 750,000,000,000
Credit facility maturity date		Nov. 16, 2021
Reduction in interest rate on outstanding borrowing	0.25%
Reduction in commitment fees on amounts not borrowed	0.025%
Outstanding borrowings		$ 385,100,000		$ 312,000,000
Letters of credit		15,000,000		16,000,000
Available credit facility		$ 291,000,000		$ 225,000,000
Line of credit facility, description of collateral		Total credit availability is limited by the amount of eligible accounts receivable, inventory, and qualified cash pledged as collateral under the agreement insofar as Ryerson is subject to a borrowing base comprised of the aggregate of these three amounts, less applicable reserves. Eligible accounts receivable, at any date of determination, is comprised of the aggregate value of all accounts directly created by a borrower (and in the case of Canadian accounts, a Canadian guarantor) in the ordinary course of business arising out of the sale of goods or the rendering of services, each of which has been invoiced, with such receivables adjusted to exclude various ineligible accounts, including, among other things, those to which a borrower (or guarantor, as applicable) does not have sole and absolute title and accounts arising out of a sale to an employee, officer, director, or affiliate of a borrower (or guarantor, as applicable). Eligible inventory, at any date of determination, is comprised of the net orderly liquidation value of all inventory owned by a borrower (and in the case of Canadian accounts, a Canadian guarantor). Qualified cash consists of cash in an eligible deposit account that is subject to customary restrictions and liens in favor of the lenders.
Default bear interest rate		2.00%
Commitment fees on amounts not borrowed		0.23%
Ryerson Credit Facility [Member] | Interest Rate Swap [Member]
Debt Instrument [Line Items]
Interest rate swap agreement date		Mar. 31, 2017
Floating rate debt			$ 150,000,000
Derivative fixed interest rate		1.658%	1.658%
Derivative maturity period		2020-03
Weighted average interest rate		2.70%		2.20%
Ryerson Credit Facility [Member] | Federal Funds Rate [Member]
Debt Instrument [Line Items]
Percentage of spread over amount available to be borrowed		0.50%
Ryerson Credit Facility [Member] | Prime Rate and One Month LIBOR Rate [Member]
Debt Instrument [Line Items]
Percentage of spread over amount available to be borrowed		1.00%
Ryerson Credit Facility [Member] | 30 Day LIBOR Rate [Member]
Debt Instrument [Line Items]
Percentage of spread over amount available to be borrowed		1.00%
Ryerson Credit Facility [Member] | One Month Canadian Bankers Acceptance Rate [Member]
Debt Instrument [Line Items]
Percentage of spread over amount available to be borrowed		1.00%
Ryerson Credit Facility [Member] | US Subsidiaries [Member]
Debt Instrument [Line Items]
Revolving credit facility maximum borrowing capacity		$ 660,000,000
Ryerson Credit Facility [Member] | Canadian Subsidiaries [Member]
Debt Instrument [Line Items]
Revolving credit facility maximum borrowing capacity		$ 90,000,000
Ryerson Credit Facility [Member] | Canadian Subsidiaries [Member] | Federal Funds Rate [Member]
Debt Instrument [Line Items]
Percentage of spread over amount available to be borrowed		0.50%
Ryerson Credit Facility [Member] | Minimum [Member] | Base Rate and Canadian Prime Rate [Member]
Debt Instrument [Line Items]
Percentage of spread over amount available to be borrowed		0.25%
Ryerson Credit Facility [Member] | Minimum [Member] | LIBOR and Banker's Acceptance Rate [Member]
Debt Instrument [Line Items]
Percentage of spread over amount available to be borrowed		1.25%
Ryerson Credit Facility [Member] | Maximum [Member] | Base Rate and Canadian Prime Rate [Member]
Debt Instrument [Line Items]
Percentage of spread over amount available to be borrowed		0.50%
Ryerson Credit Facility [Member] | Maximum [Member] | LIBOR and Banker's Acceptance Rate [Member]
Debt Instrument [Line Items]
Percentage of spread over amount available to be borrowed		1.50%
Old Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Revolving credit facility maximum borrowing capacity	$ 1,000,000,000

Long-Term Debt - 2022 Notes - A

Long-Term Debt - 2022 Notes - Additional Information (Detail) - USD ($)	May 24, 2016	Sep. 30, 2017	Sep. 30, 2016
Debt Instrument [Line Items]
Gain (loss) on retirement of debt			$ (7,200,000)
2022 Notes [Member]
Debt Instrument [Line Items]
Aggregate amount of senior notes issued	$ 650,000,000
Debt Instrument Percentage	11.00%
2022 Notes [Member] | Joseph T. Ryerson [Member]
Debt Instrument [Line Items]
Maximum percentage of dividend of future net income		50.00%
2022 Notes [Member] | Redeemable in twelve months beginning May 15, 2019 [Member]
Debt Instrument [Line Items]
Redemption price as a percentage of principal amount		105.50%
2022 Notes [Member] | Redeemable in twelve months beginning May 15, 2020 [Member]
Debt Instrument [Line Items]
Redemption price as a percentage of principal amount		102.75%
2022 Notes [Member] | Redeemable in twelve months beginning May 15, 2021 and thereafter [Member]
Debt Instrument [Line Items]
Redemption price as a percentage of principal amount		100.00%
2022 Notes [Member] | Redeemable before May 15, 2019 [Member]
Debt Instrument [Line Items]
Redemption price as a percentage of principal amount		100.00%
Optional redemption price as a percentage of principal amount		111.00%
2022 Notes [Member] | Redeemable before May 15, 2019 [Member] | Maximum [Member]
Debt Instrument [Line Items]
Optional redemption amount prior to redemption date		35.00%
2017 Notes [Member]
Debt Instrument [Line Items]
Debt Instrument Percentage		9.00%
Principal amount of debt instrument repurchased	$ 569,900,000
2018 Notes [Member]
Debt Instrument [Line Items]
Debt Instrument Percentage		11.25%
Principal amount of debt instrument repurchased	95,000,000		27,000,000
Debt instruments senior notes retired			18,200,000
2018 Notes [Member] | Other Income and (Expense), Net [Member]
Debt Instrument [Line Items]
Gain (loss) on retirement of debt	$ (16,000,000)		$ 8,800,000

Long-Term Debt - Foreign Debt -

Long-Term Debt - Foreign Debt - Additional Information (Detail) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Foreign debt	$ 19.5	$ 19.2
Foreign Debt [Member]
Debt Instrument [Line Items]
Available credit facility	26	26
Letters of credit issued by our foreign subsidiaries	6	6
Foreign Debt [Member] | Owed to Banks [Member] | Ryerson China [Member]
Debt Instrument [Line Items]
Foreign debt	$ 19.5	$ 19.2
Weighted average interest rate	3.90%	4.40%

Employee Benefits - Components

Employee Benefits - Components of Net Periodic Benefit (Credit) Cost (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Pension Benefits [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost			$ 1	$ 1
Interest cost	$ 6	$ 8	19	22
Expected return on assets	(10)	(12)	(31)	(34)
Recognized actuarial (gain) loss	4	3	11	9
Net periodic benefit credit		(1)		(2)
Other Benefits [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Interest cost	1	1	2	2
Recognized actuarial (gain) loss	(2)	(2)	(6)	(6)
Amortization of prior service credit	(1)	(1)	(2)	(2)
Net periodic benefit credit	$ (2)	$ (2)	$ (6)	$ (6)

Employee Benefits - Additional

Employee Benefits - Additional Information (Detail) - USD ($) $ in Millions	5 Months Ended	9 Months Ended
	May 31, 2017	Sep. 30, 2017
Compensation And Retirement Disclosure [Abstract]
Curtailment loss		$ 0.1
Re measurement of discount rate	4.14%	3.86%
Defined benefit plan expected return on plan assets percentage	6.75%	6.95%
Contribution to the pension plan fund		$ 16
Anticipated minimum required pension contribution funding for the remainder of fiscal period		$ 5

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Millions	Jan. 06, 2017	Sep. 30, 2017
Commitments And Contingencies Disclosure [Abstract]
Record of decision description		The ROD includes a combination of dredging, capping and enhanced natural recovery that would take approximately thirteen years to construct plus additional time for monitored natural recovery
Estimated present value cost for construction and recovery	$ 1,050

Derivatives and Fair Value Me40

Derivatives and Fair Value Measurements - Additional Information (Detail)	3 Months Ended	9 Months Ended		12 Months Ended
	Jun. 30, 2017USD ($)	Sep. 30, 2017USD ($)Tgal	Sep. 30, 2016USD ($)	Dec. 31, 2016USD ($)Tgal	Mar. 31, 2017
Derivatives Fair Value [Line Items]
Prepaid expenses and other current assets - assets held for sale		$ 0		$ 3,600,000
Other-than-temporary impairment charge on available-for-sale investments	$ 200,000	200,000	$ 2,800,000
Proceeds from sale of investments		$ 0
Minimum [Member]
Derivatives Fair Value [Line Items]
General contract term for exchange contracts		3 months
Maximum [Member]
Derivatives Fair Value [Line Items]
General contract term for exchange contracts		12 months
Interest Rate Swap [Member]
Derivatives Fair Value [Line Items]
Fair value of interest rate swaps		$ 0
Derivative gain (loss) to be reclassified into interest expenses during next 12 months		300,000
Interest Rate Swap [Member] | Ryerson Credit Facility [Member]
Derivatives Fair Value [Line Items]
Derivative notional amount		$ 150,000,000
Derivative fixed interest rate		1.658%			1.658%
Foreign Exchange Forward [Member]
Derivatives Fair Value [Line Items]
Derivative notional amount		$ 2,100,000		$ 2,300,000
Nickel Swap Contracts [Member]
Derivatives Fair Value [Line Items]
Commodity notional value | T		517		296
Hot Roll Steel Coil Swap [Member]
Derivatives Fair Value [Line Items]
Commodity notional value | T		8,503		11,998
Aluminum Swap Contracts [Member]
Derivatives Fair Value [Line Items]
Commodity notional value | T		15,717		8,466
Diesel Fuel Swap Contracts [Member]
Derivatives Fair Value [Line Items]
Commodity notional value | gal		0		39,000
Zinc Contracts [Member]
Derivatives Fair Value [Line Items]
Commodity notional value | T		3,402		0
Ryerson Credit Facility Hedged by Interest Rate Swap [Member]
Derivatives Fair Value [Line Items]
Derivative notional amount		$ 150,000,000

Derivatives and Fair Value Me41

Derivatives and Fair Value Measurements - Location and Fair Value Amount of Derivative Instruments (Detail) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Derivatives Fair Value [Line Items]
Asset Derivatives, Fair Value	$ 2.2	$ 2
Liability Derivatives, Fair Value	2.4	0.2
Derivatives Not Designated as Hedging Instruments under ASC 815 [Member] | Metal Commodity Contracts [Member] | Prepaid Expenses and Other Current Assets [Member]
Derivatives Fair Value [Line Items]
Asset Derivatives, Fair Value	2.2	2
Derivatives Not Designated as Hedging Instruments under ASC 815 [Member] | Metal Commodity Contracts [Member] | Other Accrued Liabilities [Member]
Derivatives Fair Value [Line Items]
Liability Derivatives, Fair Value	2.3	$ 0.2
Derivatives Not Designated as Hedging Instruments under ASC 815 [Member] | Foreign Exchange Contracts [Member] | Other Accrued Liabilities [Member]
Derivatives Fair Value [Line Items]
Liability Derivatives, Fair Value	$ 0.1

Derivatives and Fair Value Me42

Derivatives and Fair Value Measurements - Location and Amount of Gains and Losses on Derivatives Not Designated as Hedging Instruments Reported in Condensed Consolidated Statements of Comprehensive Income (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Derivative Instruments Gain Loss [Line Items]
Amount of Gain/(Loss) Recognized in Income on Derivatives			$ (1.9)	$ 8.2
Derivatives Not Designated as Hedging Instruments under ASC 815 [Member]
Derivative Instruments Gain Loss [Line Items]
Amount of Gain/(Loss) Recognized in Income on Derivatives	$ 0.8	$ 1.7	2.5	9
Derivatives Not Designated as Hedging Instruments under ASC 815 [Member] | Metal Commodity Contracts [Member] | Cost of Materials Sold [Member]
Derivative Instruments Gain Loss [Line Items]
Amount of Gain/(Loss) Recognized in Income on Derivatives	$ 0.8	$ 1.7	2.6	9
Derivatives Not Designated as Hedging Instruments under ASC 815 [Member] | Foreign Exchange Contracts [Member] | Other Income and (Expense), Net [Member]
Derivative Instruments Gain Loss [Line Items]
Amount of Gain/(Loss) Recognized in Income on Derivatives			$ (0.1)	(0.1)
Derivatives Not Designated as Hedging Instruments under ASC 815 [Member] | Diesel Fuel Commodity Contracts [Member] | Warehousing Delivery Selling General and Administrative [Member]
Derivative Instruments Gain Loss [Line Items]
Amount of Gain/(Loss) Recognized in Income on Derivatives				$ 0.1

Derivatives and Fair Value Me43

Derivatives and Fair Value Measurements - Location and Amount of Gains and Losses on Derivatives Designated as Hedging Instruments Reported in Condensed Consolidated Statements of Comprehensive Income (Detail) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2017
Derivatives designated as hedging instruments under ASC 815 [Member] | Interest Rate Swaps [Member] | Interest and Other Expense on Debt [Member]
Derivative Instruments Gain Loss [Line Items]
Amount of Gain/(Loss) Reclassified from Accumulated Other Comprehensive Income into Income	$ (0.1)	$ (0.5)

Derivatives and Fair Value Me44

Derivatives and Fair Value Measurements - Assets and Liabilities Measured and Recorded at Fair Value (Detail) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivatives, assets	$ 2.2	$ 2
Derivatives, liabilities	2.4	0.2
Derivatives Not Designated as Hedging Instruments under ASC 815 [Member] | Prepaid and Other Current Assets [Member] | Metal Commodity Contracts [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivatives, assets	2.2	2
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Common Stock [Member] | Prepaid and Other Current Assets [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available for sale investment	0.1	0.4
Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivatives, liabilities	2.4
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Derivatives Not Designated as Hedging Instruments under ASC 815 [Member] | Metal Commodity Contracts [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivatives, assets	2.2	2
Derivatives, liabilities	2.3	$ 0.2
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Derivatives Not Designated as Hedging Instruments under ASC 815 [Member] | Foreign Exchange Contracts [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivatives, liabilities	$ 0.1

Derivatives and Fair Value Me45

Derivatives and Fair Value Measurements - Carrying and Estimated Fair Values Financial Instruments (Detail) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Carrying Amount [Member]
Derivatives Fair Value [Line Items]
Cash and cash equivalents	$ 73.6	$ 80.7
Restricted cash	1.3	1
Receivables less provision for allowances, claims and doubtful accounts	425.4	326
Accounts payable	362.5	230.4
Long-term debt, including current portion	1,041.6	963.5
Fair Value [Member]
Derivatives Fair Value [Line Items]
Cash and cash equivalents	73.6	80.7
Restricted cash	1.3	1
Receivables less provision for allowances, claims and doubtful accounts	425.4	326
Accounts payable	362.5	230.4
Long-term debt, including current portion	$ 1,120.7	$ 1,034.2

Derivatives and Fair Value Me46

Derivatives and Fair Value Measurements - Assets and Liabilities Measured and Recorded at Fair Value on Non Recurring Basis (Detail) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Prepaid expenses and other current assets – assets held for sale	$ 0	$ 3.6
Level 2 [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Prepaid expenses and other current assets – assets held for sale		$ 3.6

Derivatives and Fair Value Me47

Derivatives and Fair Value Measurements - Available-for-Sale Securities (Detail) - Common Stock [Member] - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Schedule Of Available For Sale Securities [Line Items]
Cost	$ 0.2	$ 0.4
Gross Unrealized Losses	(0.1)
Fair Value	$ 0.1	$ 0.4

Stockholders' Equity (Deficit48

Stockholders' Equity (Deficit), Accumulated Other Comprehensive Income (Loss) and Redeemable Noncontrolling Interest - Change in Stockholders' Equity (Deficit) (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Beginning Balance			$ (49.3)
Beginning Balance, shares			37,345,117
Net income	$ 1.9	$ 8.4	$ 17.7	$ 27.3
Foreign currency translation			5.8
Gain on intra-entity foreign currency transactions			3.6
Changes in defined benefit pension and other post-retirement benefit plans, net of tax			6.4
Unrealized loss on available-for-sale investment, net of tax			(0.2)
Other than temporary impairment, net of tax			0.1
Stock-based compensation expense			1.5
Ending Balance	$ (14.4)		$ (14.4)
Ending Balance, shares	37,421,081		37,421,081
Common Stock [Member]
Beginning Balance			$ 0.4
Beginning Balance, shares			37,345,000
Stock-based compensation expense, shares			76,000
Ending Balance	$ 0.4		$ 0.4
Ending Balance, shares	37,421,000		37,421,000
Treasury Stock [Member]
Beginning Balance			$ (6.6)
Beginning Balance, shares			213,000
Ending Balance	$ (6.6)		$ (6.6)
Ending Balance, shares	213,000		213,000
Capital in Excess of Par Value [Member]
Beginning Balance			$ 375.4
Stock-based compensation expense			1.5
Ending Balance	$ 376.9		376.9
Accumulated Deficit [Member]
Beginning Balance			(112.2)
Net income			17.1
Ending Balance	(95.1)		(95.1)
Foreign Currency Translation [Member]
Beginning Balance			(50.2)
Foreign currency translation			5.5
Gain on intra-entity foreign currency transactions			3.6
Ending Balance	(41.1)		(41.1)
Benefit Plan Liabilities [Member]
Beginning Balance			(258.7)
Changes in defined benefit pension and other post-retirement benefit plans, net of tax			6.4
Ending Balance	(252.3)		(252.3)
Unrealized Gain (Loss) on Available- For-Sale Investments [Member]
Beginning Balance			1.1
Unrealized loss on available-for-sale investment, net of tax			(0.2)
Other than temporary impairment, net of tax			0.1
Ending Balance	1		1
Non-controlling Interest [Member]
Beginning Balance			1.5
Net income			0.6
Foreign currency translation			0.3
Ending Balance	$ 2.4		$ 2.4

Stockholders' Equity (Deficit49

Stockholders' Equity (Deficit), Accumulated Other Comprehensive Income (Loss) and Redeemable Noncontrolling Interest - Change in Stockholders' Equity (Deficit) (Parenthetical) (Detail) $ in Millions	9 Months Ended
	Sep. 30, 2017USD ($)
Equity [Abstract]
Changes in defined benefit pension and other post-retirement benefit plans, tax	$ 3.9
Unrealized loss on available-for-sale investment, tax	0.1
Other than temporary impairment, tax	$ 0.1

Stockholders' Equity (Deficit50

Stockholders' Equity (Deficit), Accumulated Other Comprehensive Income (Loss) and Redeemable Noncontrolling Interest - Changes in Accumulated Other Comprehensive Income/(Loss) Net of Tax by Component (Detail) $ in Millions	9 Months Ended
	Sep. 30, 2017USD ($)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	$ (49.3)
Ending Balance	(14.4)
Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(50.2)
Other comprehensive income (loss) before reclassifications	9.1
Net current-period other comprehensive income (loss)	9.1
Ending Balance	(41.1)
Benefit Plan Liabilities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(258.7)
Other comprehensive income (loss) before reclassifications	7.8
Amounts reclassified from accumulated other comprehensive income (loss)	(1.4)
Net current-period other comprehensive income (loss)	6.4
Ending Balance	(252.3)
Available-For-Sale Investments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	1.1
Other comprehensive income (loss) before reclassifications	(0.2)
Amounts reclassified from accumulated other comprehensive income (loss)	0.1
Net current-period other comprehensive income (loss)	(0.1)
Ending Balance	1
Cash Flow Hedge - Interest Rate Swap [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss) before reclassifications	(0.3)
Amounts reclassified from accumulated other comprehensive income (loss)	$ 0.3

Stockholders' Equity (Deficit51

Stockholders' Equity (Deficit), Accumulated Other Comprehensive Income (Loss) and Redeemable Noncontrolling Interest - Reclassifications Out of Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Other income and (expense), net	$ 1.4	$ 0.2	$ 2	$ 13.2
Tax benefit	(0.7)	1.6	5.3	14
Net of tax	(1.9)	(8.4)	(17.7)	(27.3)
Other-than-temporary Impairment [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Other income and (expense), net			0.2	2.8
Tax benefit			(0.1)	(1.1)
Net of tax			0.1	1.7
Amortization of Defined Benefit Pension and Other Post-retirement Benefit Plan Items, Prior Service Credits [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Reclassifications out of AOCI	(0.8)	(0.7)	(2.3)	(2.2)
Amortization of Defined Benefit Pension and Other Post-retirement Benefit Plan Items [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Reclassifications out of AOCI	1.1	0.4	(2.5)	1.2
Tax provision (benefit)	(0.3)	(0.1)	1.1	(0.4)
Net of tax	0.8	0.3	(1.4)	0.8
Cash Flow Hedge - Interest Rate Swap [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Realized swap interest loss	0.1		0.5
Tax benefit	(0.1)		(0.2)
Net of tax			0.3
Net of tax			0.3
Amortization of Defined Benefit Pension and Other Post-retirement Benefit Plan Items, Actuarial Gain/Loss [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Reclassifications out of AOCI	$ 1.9	$ 1.1	$ (0.2)	$ 3.4

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Provision (benefit) for income taxes	$ (0.7)	$ 1.6	$ 5.3	$ 14
Valuation allowance	$ 19.5		$ 19.5		$ 20

Earnings Per Share - Additional

Earnings Per Share - Additional Information (Detail) - shares	3 Months Ended	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2017
Earnings Per Share [Abstract]
Weighted average number of shares excluded from computation of earnings per share	145,833	96,808

Earnings Per Share - Calculatio

Earnings Per Share - Calculation of Basic and Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Numerator:
Net income attributable to Ryerson Holding Corporation	$ 1.7	$ 8.2	$ 17.1	$ 27.3
Denominator:
Weighted average shares outstanding	37,190,927	35,804,069	37,165,552	33,343,503
Dilutive effect of stock-based awards	103,781	161,615	125,041	92,009
Weighted average shares outstanding adjusted for dilutive securities	37,294,708	35,965,684	37,290,593	33,435,512
Earnings per share
Basic and diluted earnings per share	$ 0.05	$ 0.23	$ 0.46	$ 0.82