Ryerson Holding (RYI) 10-Q 28 Oct 20 2020 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2020	Oct. 23, 2020
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Sep. 30, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q3
Entity Registrant Name	RYERSON HOLDING CORPORATION
Entity Central Index Key	0001481582
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		38,117,397
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity File Number	001-34735
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	26-1251524
Entity Address, Address Line One	227 W. Monroe St.
Entity Address, Address Line Two	27th Floor
Entity Address, City or Town	Chicago
Entity Address, State or Province	IL
Entity Address, Postal Zip Code	60606
City Area Code	312
Local Phone Number	292-5000
Title of 12(b) Security	Common Stock, $0.01 par value, 100,000,000 shares authorized
Trading Symbol	RYI
Security Exchange Name	NYSE

Condensed Consolidated Statemen

Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement Of Income And Comprehensive Income [Abstract]
Net sales	$ 831.5	$ 1,104.4	$ 2,613.6	$ 3,540.1
Cost of materials sold	675.6	900	2,146.4	2,892.6
Gross profit	155.9	204.4	467.2	647.5
Warehousing, delivery, selling, general, and administrative	125.4	165.6	405.2	493.9
Gain on insurance settlement		(1.5)		(1.5)
Restructuring and other charges	0.2	0.3	2.2	1.7
Operating profit	30.3	40	59.8	153.4
Other income and (expense), net	0.5	(0.3)	1.3	(1.3)
Pension settlement charge due to annuitization	(52.5)		(52.5)
Loss on debt extinguishment	(17.1)		(17.1)
Interest and other expense on debt	(20.2)	(23.2)	(61.2)	(71)
Income (loss) before income taxes	(59)	16.5	(69.7)	81.1
Provision (benefit) for income taxes	(19.3)	6.3	(20.9)	24.8
Net income (loss)	(39.7)	10.2	(48.8)	56.3
Less: Net income attributable to noncontrolling interest	0.2	0.1	0.3	0.3
Net income (loss) attributable to Ryerson Holding Corporation	(39.9)	10.1	(49.1)	56
Comprehensive income (loss)	(32.4)	9.2	(48.1)	59.8
Less: Comprehensive income attributable to noncontrolling interest	0.2		0.2	0.3
Comprehensive income (loss) attributable to Ryerson Holding Corporation	$ (32.6)	$ 9.2	$ (48.3)	$ 59.5
Basic earnings (loss) per share	$ (1.05)	$ 0.27	$ (1.29)	$ 1.49
Diluted earnings (loss) per share	$ (1.05)	$ 0.27	$ (1.29)	$ 1.48

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Operating activities:
Net income (loss)	$ (48.8)	$ 56.3
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	40.5	44.3
Stock-based compensation	1.4	2.4
Deferred income taxes	(10.9)	41.4
Provision for allowances, claims, and doubtful accounts	(1.1)	2.5
Restructuring and other charges	2.2	1.7
Gain on insurance settlement		(1.5)
Pension settlement charge	54.3	0.2
Loss on retirement of debt	16.2	0.2
Non-cash (gain) loss from derivatives	(5)	8.2
Other items		0.8
Change in operating assets and liabilities:
Receivables	28.4	12.4
Inventories	169	(5.1)
Other assets	13.5	4.3
Accounts payable	55.8	(1.6)
Accrued liabilities	(8.5)	(3.8)
Accrued taxes payable/receivable	(1.6)	(8.3)
Deferred employee benefit costs	(8.7)	(23.9)
Net adjustments	345.5	74.2
Net cash provided by operating activities	296.7	130.5
Investing activities:
Capital expenditures	(17.9)	(32.5)
Proceeds from sale of property, plant, and equipment	0.1	8.8
Proceeds from insurance settlement		1.8
Net cash used in investing activities	(17.8)	(21.9)
Financing activities:
Long term debt issued	500
Repayment of debt	(602.8)	(12.3)
Net repayments of short-term borrowings	(73.5)	(107.4)
Bond issuance costs	(10.6)
Net increase (decrease) in book overdrafts	(16.2)	12.6
Principal payments on finance lease obligations	(9.9)	(9.8)
Contingent payment related to acquisition		(1.3)
Proceeds from sale-leaseback transactions		8.3
Dividends paid to non-controlling interest	(0.2)
Net cash used in financing activities	(213.2)	(109.9)
Net increase (decrease) in cash, cash equivalents, and restricted cash	65.7	(1.3)
Effect of exchange rate changes on cash, cash equivalents, and restricted cash	(2.6)	(0.1)
Net change in cash, cash equivalents, and restricted cash	63.1	(1.4)
Cash, cash equivalents, and restricted cash—beginning of period	59.8	24.3
Cash, cash equivalents, and restricted cash—end of period	122.9	22.9
Cash paid during the period for:
Interest paid to third parties, net	57.8	51.1
Income taxes, net	(7.1)	(7.2)
Noncash investing activities:
Asset additions under adoption of accounting principal ASC 842		82.3
Asset additions under operating leases	0.9	12.5
Asset additions under finance leases and sale-leasebacks	$ 1.4	1.2
Asset additions under financing arrangements		2.2
Noncash financing activities:
Short term debt converted to finance lease		$ 7.6

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 121.8	$ 11
Restricted cash	1.1	48.8
Receivables less provisions of $1.9 in 2020 and $3.5 2019	396.5	425.1
Inventories	572.6	742.9
Prepaid expenses and other current assets	46.3	52.2
Total current assets	1,138.3	1,280
Property, plant, and equipment, at cost	814.6	806.5
Less: Accumulated depreciation	392.9	366.8
Property, plant, and equipment, net	421.7	439.7
Operating lease assets	112.3	128.2
Other intangible assets	44.9	50.6
Goodwill	120.3	120.3
Deferred charges and other assets	2.6	2.7
Total assets	1,840.1	2,021.5
Current liabilities:
Accounts payable	351.1	311.5
Salaries, wages, and commissions	36	35.3
Other accrued liabilities	54.7	68
Short-term debt	9.1	49.2
Current portion of operating lease liabilities	20.9	20.9
Current portion of deferred employee benefits	7	7
Total current liabilities	478.8	491.9
Long-term debt	804.9	932.6
Deferred employee benefits	249.7	217.5
Noncurrent operating lease liabilities	97.1	112.8
Deferred income taxes	56.6	65.2
Other noncurrent liabilities	21.3	22.9
Total liabilities	1,708.4	1,842.9
Commitments and contingencies
Ryerson Holding Corporation stockholders’ equity:
Preferred stock, value
Common stock, $0.01 par value; 100,000,000 shares authorized; 38,329,897 and 37,996,261 shares issued at 2020 and 2019, respectively	0.4	0.4
Capital in excess of par value	382.6	381.2
Retained earnings	50.5	99.6
Treasury stock at cost - Common stock, value	(6.6)	(6.6)
Accumulated other comprehensive loss	(301.2)	(302)
Total Ryerson Holding Corporation stockholders’ equity	125.7	172.6
Noncontrolling interest	6	6
Total equity	131.7	178.6
Total liabilities and equity	$ 1,840.1	$ 2,021.5

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Statement Of Financial Position [Abstract]
Receivables, provisions	$ 1.9	$ 3.5
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	38,329,897	37,996,261
Treasury stock at cost - Common stock, shares	212,500	212,500

Financial Statements

Financial Statements	9 Months Ended
	Sep. 30, 2020
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 55% of our issued and outstanding common stock. We are a leading value-added processor and distributor of industrial metals 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 processing and distribution operations in China through an indirect wholly-owned subsidiary, Ryerson China Limited (“Ryerson China”), a Chinese limited liability company. 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.” Results of operations for any interim period are not necessarily indicative of results of any future periods or for the year. The condensed consolidated financial statements as of September 30, 2020 and for the three-month and nine-month periods ended September 30, 2020 and 2019 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, 2019. Risks and Uncertainties The Condensed Consolidated Financial Statements presented herein reflect estimates and assumptions made by management at September 30, 2020 and for the three and nine month periods ended September 30, 2020. The novel coronavirus (“COVID-19”) continues to spread throughout the United States and other countries across the world, and the duration and severity of the effects of the COVID-19 pandemic are currently unknown. It is possible that the COVID-19 pandemic could impact future accounting estimates and assumptions which could materially impact our results in future periods. Such estimates and assumptions affect, among other things, the Company’s goodwill, long-lived assets, inventory valuation, assessment of the annual effective tax rate, valuation of deferred income taxes and income tax contingencies, and the allowance for doubtful accounts.

Recent Accounting Pronouncement

Recent Accounting Pronouncements	9 Months Ended
	Sep. 30, 2020
New Accounting Pronouncements And Changes In Accounting Principles [Abstract]
Recent Accounting Pronouncements	NO TE 2: RECENT ACCOUNTING PRONOUNCEMENTS Impact of Recently Issued Accounting Standards—Adopted In June 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016-13, “ Financial Instruments – Credit Losses: Measurement of Credit Losses on Financial Instruments. ” The standard and subsequently issued amendments require 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 update is effective for interim and annual reporting periods beginning after December 15, 2019. In August 2018, the FASB issued ASU 2018-15, “ Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract. license fees and implementation costs that are capitalized for hosting arrangements that are service contracts are classified as prepaid assets on the Company’s Condensed Consolidated Balance Sheet and the amortization of these costs are presented in warehousing, delivery, selling, general, and administrative expense on the Condensed Consolidated Statement of Comprehensive Income. In March 2020, the FASB issued ASU 2020-04, “Reference Rate Reform (Topic 848).” The amendments in this update provide optional expedients and exceptions for applying Generally Accepted Accounting Principles (“GAAP”) to contracts, hedging relationships, and other transactions affected by reference rate reform if certain criteria are met. The amendments apply only to contracts, hedging relationships, and other transactions that reference LIBOR or another reference rate expected to be discontinued because of reference rate reform. The expedients and exceptions provided by the amendments do not apply to contract modifications made and hedging relationships entered into or evaluated after December 31, 2022, except for hedging relationships existing as of December 31, 2022, that an entity has elected certain optional expedients for and that are retained through the end of the hedging relationship. The amendments in this update are effective for all entities as of March 12, 2020 through December 31, 2022. We adopted this guidance as of March 12, 2020 and there was no impact to our financial statements as no in-scope contract modifications occurred. Impact of Recently Issued Accounting Standards—Not Yet Adopted In December 2019, the FASB issued ASU 2019-12, “Income Taxes – Simplifying the Accounting for Income Taxes.”

Cash, Cash Equivalents, and Res

Cash, Cash Equivalents, and Restricted Cash	9 Months Ended
	Sep. 30, 2020
Cash And Cash Equivalents [Abstract]
Cash, Cash Equivalents, and Restricted Cash	NOTE 3: CASH, CASH EQUIVALENTS, AND RESTRICTED CASH The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the Condensed Consolidated Balance Sheets that sum to the total of the beginning and ending cash balances shown in the Condensed Consolidated Statements of Cash Flows: September 30, December 31, 2020 2019 (In millions) Cash and cash equivalents $ 121.8 $ 11.0 Restricted cash 1.1 48.8 Total cash, cash equivalents, and restricted cash $ 122.9 $ 59.8 As part of the indenture for our $650 million senior secured notes due in 2022 (the “2022 Notes”), which was satisfied and discharged on July 22, 2020, proceeds from the sale of property, plant, and equipment that was collateral under such indenture were deposited into a restricted cash account. The cash could have been withdrawn from this restricted account upon meeting certain requirements, to fund activities such as debt repayment and future capital expenditures. In December 2019, we signed and closed a sale-leaseback transaction for a group of service center properties, resulting in net proceeds of $61.5 million of which $47.6 million was deposited into the restricted cash account. The balance in the restricted account for property, plant, and equipment sales was zero at September 30, 2020 compared to $47.6 million at December 31, 2019 as funds were released during the first nine months of 2020 to repurchase and redeem our 2022 Notes (see Note 7) as well as fund capital expenditures. We also had $1.1 million and $1.2 million of cash restricted for the purposes of covering letters of credit that can be presented for potential insurance claims at September 30, 2020 and December 31, 2019, respectively.

Inventories

Inventories	9 Months Ended
	Sep. 30, 2020
Inventory Disclosure [Abstract]
Inventories	NOTE 4: 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, 2020 and December 31, 2019 as follows: September 30, December 31, 2020 2019 (In millions) In process and finished products $ 572.6 $ 742.9 If current cost had been used to value inventories, such inventories would have been $74 million The Company has consignment inventory at certain customer locations, which totaled $4.7 million and $5.6 million at September 30, 2020 and December 31, 2019, respectively.

Leases

Leases	9 Months Ended
	Sep. 30, 2020
Leases [Abstract]
Leases	NOTE 5: LEASES The Company leases various assets including real estate, trucks, trailers, mobile equipment, processing equipment, and IT equipment. The Company has noncancelable operating leases expiring at various times through 2032 and finance leases expiring at various times through 2027. The following table summarizes the location and amount of lease assets and lease liabilities reported in our Condensed Consolidated Balance Sheet as of September 30, 2020 and December 31, 2019: September 30, December 31, Leases Balance Sheet Location 2020 2019 (In millions) Assets Operating lease assets Operating lease assets $ 112.3 $ 128.2 Finance lease assets Property, plant, and equipment, net (a) 50.0 54.2 Total lease assets $ 162.3 $ 182.4 Liabilities Current Operating Current portion of operating lease liabilities $ 20.9 $ 20.9 Finance Other accrued liabilities 9.6 12.4 Noncurrent Operating Noncurrent operating lease liabilities 97.1 112.8 Finance Other noncurrent liabilities 14.7 18.7 Total lease liabilities $ 142.3 $ 164.8 (a) Finance lease assets were recorded net of accumulated amortization of $23.5 million and $19.0 million as of September 30, 2020 and December 31, 2019, respectively. The following table summarizes the location and amount of lease expense reported in our Condensed Consolidated Statements of Comprehensive Income for the three and nine month periods ended September 30, 2020 and 2019: Three Months Ended September 30, Nine Months Ended September 30, Lease Expense Location of Lease Expense Recognized in Income 2020 2019 2020 2019 (In millions) Operating lease expense Warehousing, delivery, selling, general, and administrative $ 6.1 $ 5.5 $ 18.0 $ 16.6 Finance lease expense Amortization of lease assets Warehousing, delivery, selling, general, and administrative 2.2 1.7 5.6 5.1 Interest on lease liabilities Interest and other expense on debt 0.3 0.4 1.0 1.3 Variable lease expense Warehousing, delivery, selling, general, and administrative 0.7 0.8 2.3 2.2 Short-term lease expense Warehousing, delivery, selling, general, and administrative 0.5 0.2 1.8 1.3 Total lease expense $ 9.8 $ 8.6 $ 28.7 $ 26.5 The following table presents maturity analysis of lease liabilities at September 30, 2020: Maturity of Lease Liabilities Operating Leases (a) Finance Leases (In millions) 2020 $ 6.4 $ 3.4 2021 23.8 9.5 2022 20.1 6.0 2023 16.7 3.6 2024 15.5 2.9 After 2024 51.1 0.5 Total lease payments 133.6 25.9 Less: Interest (b) (15.6 ) (1.6 ) Present value of lease liabilities (c) $ 118.0 $ 24.3 (a) There were no operating leases with options to extend lease terms that are reasonably certain of being exercised or operating leases signed but not yet commenced. (b) Calculated using the discount rate for each lease. (c) Includes the current portion of $20.9 million for operating leases and $9.6 million for finance leases. The following table shows the weighted-average remaining lease term and discount rate for operating and finance leases, respectively, at September 30, 2020 and December 31, 2019: September 30, December 31, Lease Term and Discount Rate 2020 2019 Weighted-average remaining lease term (years) Operating leases 7.5 7.9 Finance leases 2.7 2.8 Weighted-average discount rate Operating leases 3.4 % 3.6 % Finance leases 4.6 % 4.8 % Information reported in our Condensed Consolidated Statement of Cash Flows for the nine months ended September 30, 2020 and 2019 is summarized below: Nine Months Ended September 30, Other Information 2020 2019 (In millions) Cash paid for amounts included in the measurement of lease liabilities Operating cash flows from operating leases $ 18.9 $ 15.3 Operating cash flows from finance leases 1.0 1.3 Financing cash flows from finance leases 9.9 9.8 Assets obtained in exchange for lease obligations: Adoption of accounting principal ASC 842 — 82.3 Operating leases 0.9 12.5 Finance leases 1.4 1.2

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	9 Months Ended
	Sep. 30, 2020
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	NOTE 6: GOODWILL AND OTHER INTANGIBLE ASSETS Goodwill, which represents the excess of cost over the fair value of net assets acquired, amounted to $120.3 million Intangibles – Goodwill and Other, Due to the COVID-19 pandemic and its effect on our demand levels and stock price, as well as the overall economy, we performed a quantitative impairment test of goodwill as of May 31, 2020. It was determined that no impairment existed. Other intangible assets with finite useful lives continue to be amortized over their useful lives. 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. Our Critical Accounting Policies and Estimates for goodwill and intangibles assets are disclosed in Note 1 to the Consolidated Financial Statements and in Management's Discussion and Analysis of our Annual Report on Form 10-K for the fiscal year ended December 31, 2019. We continue to monitor the significant global economic uncertainty as a result of the COVID-19 pandemic to assess the outlook for demand for our products and the impact on our business and our overall financial performance. A lack of further recovery or a deterioration in current market conditions, a trend of weaker than expected financial performance in our business, or a lack of further recovery or a decline in the Company’s market capitalization, among other factors, could result in an impairment charge in future periods which could have a material adverse effect on our financial statements.

Long-Term Debt

Long-Term Debt	9 Months Ended
	Sep. 30, 2020
Debt Disclosure [Abstract]
Long-Term Debt	NOTE 7: LONG-TERM DEBT Long-term debt consisted of the following at September 30, 2020 and December 31, 2019: September 30, December 31, 2020 2019 (In millions) Ryerson Credit Facility $ 310.0 $ 377.7 8.50% Senior Secured Notes due 2028 500.0 — 11.00% Senior Secured Notes due 2022 — 587.9 Foreign debt 7.4 13.2 Other debt 8.2 9.5 Unamortized debt issuance costs and discounts (11.6 ) (6.5 ) Total debt 814.0 981.8 Less: Ryerson Credit Facility - "first in, last out" subfacility — 34.3 Less: Short-term foreign debt 7.4 13.2 Less: Other short-term debt 1.7 1.7 Total long-term debt $ 804.9 $ 932.6 Ryerson Credit Facility On November 16, 2016, Ryerson entered into an amendment with respect to its $1.0 billion revolving credit facility (as amended, the “Old Credit Facility”), to reduce the total facility size from $1.0 billion 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. The Old Credit Facility was amended a second time on June 28, 2018, to increase the facility size from $750 million to $1.0 billion (the “Ryerson Credit Facility”). On September 23, 2019, a third amendment was entered into to supplement the facility and add a U.S. “first-in, last-out” sub-facility of $67.9 million (the “FILO Facility”). The FILO facility is equal in subordination with the other borrowings under the Ryerson Credit Facility and matured as of June 30, 2020. The FILO facility supplemented our borrowing capacity by providing additional collateral on eligible accounts receivable and inventory. The aggregate facility size of $1.0 billion remains unchanged. At September 30, 2020 , Ryerson had $310.0 million of outstanding borrowings, $11 million of letters of credit issued, and $237 million available under The Ryerson Credit Facility has an allocation of $940 million to the Company’s subsidiaries in the United States and an allocation of $60 million to Ryerson Holding’s Canadian subsidiary that is a borrower. Amounts outstanding under the Ryerson Canadian subsidiary that is a borrower, (A) a rate determined by reference to the Canadian base rate (the greatest of the Federal Funds Rate plus 0.50 %, Bank of America-Canada Branch’s “base rate” for commercial loans in U.S. Dollars made at its “base rate”, and the 30 day LIBOR rate plus 1.00 %), (B) the prime rate (the greater of Bank of America-Canada Branch’s “prime rate” for commercial loans made by it in Canada in Canadian Dollars and the one-month Canadian bankers’ acceptance rate plus 1.00 %), or (C) the bankers’ acceptance rate. The spread over the base rate and prime rate is between 0.25 % and 0.50 % and the spread over the LIBOR for the bankers’ acceptances is between 1.25 % and 1.50 %, depending on the amount available to be borrowed under the Ryerson Credit Facility. Amounts outstanding under the FILO Facility b ore interest at the same rates as listed above for U.S. borrowings, however the spread over the base rate wa s between 1.25 % and 1.50 % and the spread over the LIBOR rate wa s between 2.25 % and 2.50 %, depending on the amount available to be borrowed under the Ryerson Credit Facility. Ryerson also pays commitment fees on amounts not borrowed at a rate of 0.23 %. Overdue amounts and all amounts owed during the existence of a default bear interest at 2 % above the rate otherwise applicable thereto. We attempt to minimize interest rate risk exposure through the utilization of interest rate swaps, which are derivative financial instruments. In June 2019, we entered into an interest rate swap to fix interest on $60 million of our floating rate debt under the Ryerson Credit Facility at a rate of 1.729% through June 2022. In November 2019, we entered into another interest rate swap to fix interest on $100 million of our floating rate debt under the Ryerson Credit Facility at a rate of 1.539% through November 2022. Both of 3.2 Borrowings under the Ryerson The Ryerson Ryerson Ryerson The Ryerson Ryerson Ryerson The lenders under the Ryerson Ryerson Net repayments of short-term borrowings that are reflected in the Condensed Consolidated Statements of Cash Flows represent borrowings under the Ryerson 2022 and 2028 Notes On May 24, 2016, JT Ryerson issued the 2022 Notes that bore interest at a rate of 11.00% per annum. The 2022 Notes and the related guarantees were 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 certain other assets and proceeds thereof, which were secured pursuant to a second-priority security interest), subject to certain exceptions and customary permitted liens. During the first nine months of 2019, a principal amount of $11.6 million of the 2022 Notes were repurchased for $11.8 million and retired, resulting in the recognition of a $0.2 million loss within other income and (expense), net on the Condensed Consolidated Statement of Comprehensive Income. During the first six months of 2020, a principal amount of $57.6 million of the 2022 Notes were repurchased for $56.7 million and retired, resulting in the recognition of a $0.9 million gain within other income and (expense), net on the Condensed Consolidated Statement of Comprehensive Income. On July 22, 2020, JT Ryerson distributed an irrevocable notice of redemption to the holders of its 2022 Notes. The redemption of the remaining $530.3 million of JT Ryerson’s outstanding 2022 Notes occurred on August 21, 2020. On July 22, 2020, JT Ryerson satisfied and discharged the indenture governing the 2022 Notes. On July 22, 2020, JT Ryerson issued $500 million in aggregate principle amount of its 8.50% senior secured notes due 2028 (the “2028 Notes”). The 2028 Notes bear interest at a rate of 8.50% per annum. The 2028 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 net proceeds from the issuance of the 2028 Notes, along with available cash, were used to (i) redeem all of the 2022 Notes and (ii) pay related transaction fees, expenses, and premiums. The Company applied the provisions of ASC 470-50, “Modifications and Extinguishments” in accounting for the issuance of the 2028 Notes and redemption of the 2022 Notes. It was determined that while the issuance was private, the terms of the issuance were similar to a public debt issuance due to the facts that (i) no single investor or small group of investors The 2028 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 certain other assets, and proceeds thereof, which are secured pursuant to a second-priority security interest), subject to certain exceptions and customary permitted liens. The 2028 Notes will be redeemable, in whole or in part, at any time on or after August 1, 2023 at certain redemption prices. The redemption price for the 2028 Notes if redeemed during the twelve months beginning (i) August 1, 2023 is 104.250%, (ii) August 1, 2024 is 102.125%, and (iii) August 1, 2025 and thereafter is 100.000%. All redemption amounts also include accrued and unpaid interest, if any, to, but not including, the redemption date. JT Ryerson may also redeem some or all of the 2028 Notes before August 1, 2023 at a redemption price of 100.000% of the principal amount, plus accrued and unpaid interest, if any, to, but not including, the redemption date, plus a “make-whole” premium. In addition, JT Ryerson may redeem up to 40% of the outstanding 2028 Notes before August 1, 2023 with the net cash proceeds from certain equity offerings at a price equal to 108.500% of the principal amount of the Notes, plus accrued but unpaid interest, if any, to, but not including, the redemption date. Furthermore, JT Ryerson may redeem the 2028 Notes at any time and from time to time prior to August 1, 2023 in an aggregate principal amount equal to up to 10% of the original aggregate principal amount of the 2028 Notes during each twelve month period commencing on July 22, 2020 at a redemption price of 103.000%, plus accrued and unpaid interest, if any, to, but not including, the redemption date. JT Ryerson may also redeem the 2028 Notes at any time prior to August 1, 2022 in an aggregate principal amount equal to $100.0 million on a one-time basis from the net cash proceeds received from the sale of real property, at a redemption price of 104.000% plus accrued and unpaid interest, if any, to, but not including, the redemption date. In addition, JT Ryerson may be required to make an offer to purchase the 2028 Notes upon the sale of certain assets or upon a change of control. The 2028 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. On September 30, 2020, JT Ryerson delivered to the holders of its 2028 Notes a notice of partial redemption of $50 million aggregate principal amount of the 2028 Notes. The partial redemption is scheduled to occur on October 30, 2020 at a redemption price in cash of 103.000% of the principal amount of the notes to be redeemed, plus accrued and unpaid interest to, but not including, the redemption date. JT Ryerson expects to fund the redemption using available cash on hand. Upon completion of the partial redemption, $450 million of the aggregate principal amount of the 2028 Notes will remain outstanding. Foreign Debt At September 30, 2020, Ryerson China’s foreign borrowings were $7.4 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, 2019, Ryerson China’s foreign borrowings were $13.2 million rate of 4.3% Availability under the foreign credit lines was $39 million and $32 million at September 30, 2020 and December 31, 2019, respectively. Letters of credit issued by our foreign subsidiaries were $4 million and $3 million at September 30, 2020 and December 31, 2019, respectively.

Employee Benefits

Employee Benefits	9 Months Ended
	Sep. 30, 2020
Compensation And Retirement Disclosure [Abstract]
Employee Benefits	NOTE 8: EMPLOYEE BENEFITS The following tables summarize the components of net periodic benefit cost (credit) for the three and nine month periods ended September 30, 2020 and 2019 for the Ryerson pension plans and postretirement benefit plans other than pension: Three Months Ended September 30, Pension Benefits Other Benefits 2020 2019 2020 2019 (In millions) Components of net periodic benefit cost (credit) Service cost $ 0.8 $ 0.8 $ 0.1 $ 0.1 Interest cost 5.3 7.3 0.4 0.7 Expected return on assets (8.2 ) (9.2 ) — — Settlement expense 53.2 — — — Recognized actuarial (gain) loss 4.2 3.8 (1.7 ) (2.0 ) Amortization of prior service cost (credit) — 0.1 (0.5 ) (0.8 ) Net periodic benefit cost (credit) $ 55.3 $ 2.8 $ (1.7 ) $ (2.0 ) Nine Months Ended September 30, Pension Benefits Other Benefits 2020 2019 2020 2019 (In millions) Components of net periodic benefit cost (credit) Service cost $ 2.5 $ 2.5 $ 0.4 $ 0.4 Interest cost 15.7 21.9 1.3 1.9 Expected return on assets (24.4 ) (27.4 ) — — Settlement expense 54.3 0.2 — — Recognized actuarial (gain) loss 12.7 11.2 (5.2 ) (5.8 ) Amortization of prior service cost (credit) 0.1 0.1 (1.6 ) (2.3 ) Net periodic benefit cost (credit) $ 60.9 $ 8.5 $ (5.1 ) $ (5.8 ) Components of net periodic benefit cost (credit), excluding service cost, are included in Other income and (expense), net in our Condensed Consolidated Statement of Comprehensive Income. Effective September 28, 2020, the Ryerson Pension Plan purchased $95.2 million of annuities on behalf of a portion of plan participants which, due to the size of the transaction, resulted in settlement accounting. The pension plan was remeasured as of September 30, 2020. The remeasurement resulted in a settlement loss of $52.5 million which was recorded within Other income and (expense), net in the Condensed Consolidated Statement of Comprehensive Income as of September 30, 2020. As a result of the remeasurement, the discount rate decreased from 3.15% to 2.59% and the expected long-term rate of return on pension assets decreased from 5.75% to 5.25%. The Company contributed $7 million to the pension plan funds through the nine months ended September 30, 2020. The Company has elected to defer the remaining expected 2020 U.S. contributions of $12 million until January 1, 2021, as permitted under The Coronavirus Aid, Relief, and Economic Security Act (“The CARES Act”) that was passed in March 2020.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2020
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	NOTE 9: COMMITMENTS AND CONTINGENCIES In October 2011, the United States Environmental Protection Agency (the “EPA”) named JT Ryerson as one of more than 100 businesses that may be a potentially responsible party (“PRP”) for the Portland Harbor Superfund Site (the “PHS Site”). On January 6, 2017, the EPA issued an initial 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. In a change from its prior stance, at a meeting on December 4, 2018, the EPA indicated that it expected PRPs to submit a plan during 2019 to start remediation of the river and harbor per the original ROD within the next two to three years . The EPA also indicated that it expected allocation of amounts among the parties to be determined in the same two to three-year time frame. The EPA invited certain PRPs to a May 2, 2019 meeting to discuss starting the remedial design process. The EPA did not include JT Ryerson in those meetings. On December 9, 2019, a PRP group met with Administrator Wheeler, the head of the EPA, to discuss updating the ROD as recent testing indicates that the levels of contamination have “drastically improved” and, thus, remediation should be much less drastic than that in the current ROD. Administrator Wheeler directed regional EPA staff to again review the ROD before moving forward with any enforcement action. On March 3, 2020, the regional EPA issued a letter to the PRP group, essentially rejecting the request but noting that new data would be used for fine-tuning the implementation of the remedy and to that extent could result in less active remediation. The EPA indicated in a January 2, 2020 “progress update” letter that it is negotiating with certain parties to perform remedial design work at five unspecified areas which comprise 52% of the overall acreage subject to remediation. In late March, the EPA issued a Unilateral Administrative Order for Remedial Design to Schnitzer Steel, ordering it to develop a remedial design plan for the river area which includes the area where our former facilities were. In the meantime, Schnitzer has filed a petition for relief from the remedy required by the ROD. The EPA has stated that it is willing to consider de minimis settlements, which JT Ryerson is trying to pursue; however, the EPA has not begun meeting with any of the smaller parties who have requested de minimis or de micromis status, stating that it does not have sufficient information to determine whether any parties meet such criteria and does not intend to begin those considerations until after the remedial design work is completed. It has met with selected parties that we believe to be larger targets. JT Ryerson has not been invited to meet with the EPA. As a result of the ongoing negotiations and filings over the ROD and the EPA’s decision not to meet with smaller parties, we cannot determine how allocations will be made and whether a de minimus settlement can be reached with the EPA. 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, 2020 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, 2020
Investments All Other Investments [Abstract]
Derivatives and Fair Value Measurements	NOTE 10: DERIVATIVES AND FAIR VALUE MEASUREMENTS Derivatives The Company may use derivatives to partially offset its business exposure to commodity price, foreign currency, and interest rate fluctuations and their related impact on expected future cash flows and certain existing assets and liabilities. However, the Company may choose not to hedge certain exposures for a variety of reasons including, but not limited to, Company policy, accounting considerations, or the prohibitive economic cost of hedging particular exposures. There can be no assurance the hedges will offset more than a portion of the financial impact resulting from movements in commodity pricing, foreign currency exchange, or interest rates. 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 variability in cash flows in our Canada, Mexico, and China operations when a payment currency is different from our functional currency. From time to time, we may enter into fixed price sales contracts with our customers for certain of our inventory components. We may enter into metal commodity futures and options contracts to reduce volatility in the price of these metals. We may also enter into fixed price natural gas contracts and diesel fuel derivative contracts to manage the price risk of forecasted purchases of natural gas and diesel fuel. We have two receive variable, pay fixed, interest rate swaps to manage the exposure to variable interest rates of the Ryerson Credit Facility. In June 2019, we entered into a forward agreement for $60 million of “pay fixed” interest at 1.729% through June 2022 and in November 2019, we entered into a forward agreement for $100 million of “pay fixed” interest at 1.539% through November 2022. 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 swaps as of September 30, 2020 was a net liability of $4.6 million. The Company currently does not account for its commodity 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 swaps as cash flow hedges of floating-rate borrowings with changes in fair value being recorded in accumulated other comprehensive income. The Company has made an accounting policy election to offset the fair value of derivative liabilities with related cash collateral. As of September 30, 2020 and December 31, 2019, the Company offset zero and $2.7 million, respectively, 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, 2020 and December 31, 2019: Asset Derivatives Liability Derivatives Balance Sheet Location September 30, 2020 December 31, 2019 Balance Sheet Location September 30, 2020 December 31, 2019 Derivatives not designated as hedging instruments under ASC 815 (In millions) Metal commodity contracts Prepaid expenses and other current assets $ 1.5 $ 5.0 Other accrued liabilities $ 0.8 $ 9.4 (a) Crude oil contracts Prepaid expenses and other current assets — 0.1 Other accrued liabilities — — Derivatives designated as hedging instruments under ASC 815 Interest rate swaps Deferred charges and other assets — — Other noncurrent liabilities 4.6 0.2 Total derivatives $ 1.5 $ 5.1 $ 5.4 $ 9.6 (a) (a) The offsetting cash collateral balance of $2.7 million held by the derivative counterparty brought the net metal commodity contract liability to $6.7 million and the net total derivative liability balance to $6.9 million as of December 31, 2019. The following table presents the volume of the Company’s activity in derivative instruments as of September 30, 2020 and December 31, 2019: Notional Amount Derivative Instruments At September 30, 2020 At December 31, 2019 Unit of Measurement Hot roll coil swap contracts 28,502 47,155 Tons Aluminum swap contracts 14,478 23,949 Tons Nickel swap contracts 67 3,164 Tons Iron ore swap contracts — 420,000 Tons Crude oil swap contracts — 38,000 Barrels Foreign currency exchange contracts 1.6 million 2.0 million U.S. dollars Interest rate swaps 160 million 310 million U.S. dollars 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, 2020 and 2019: 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 2020 2019 2020 2019 Metal commodity contracts Cost of materials sold $ 2.0 $ (4.9 ) $ 1.3 $ (12.9 ) Crude oil commodity contracts Warehousing, delivery, selling, general, and administrative — — — 0.7 Foreign exchange contracts Other income and (expense), net (0.1 ) — — (0.1 ) Total $ 1.9 $ (4.9 ) $ 1.3 $ (12.3 ) 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, 2020 and 2019: 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 2020 2019 2020 2019 (In millions) Interest rate swaps Interest and other expense on debt $ (0.5 ) $ 0.3 $ (1.1 ) $ 0.9 As of September 30, 2020, 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 $2.3 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, 2020: At September 30, 2020 Level 1 Level 2 Level 3 (In millions) Assets Derivatives: Derivatives not designated as hedging instruments under ASC 815: Metal commodity contracts $ — $ 1.5 $ — Liabilities Derivatives: Derivatives not designated as hedging instruments under ASC 815: Metal commodity contracts $ — $ 0.8 $ — Derivatives designated as hedging instruments under ASC 815: Interest rate swaps — 4.6 — Total derivatives $ — $ 5.4 $ — 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, 2019 : At December 31, 2019 Level 1 Level 2 Level 3 (In millions) Assets Derivatives: Derivatives not designated as hedging instruments under ASC 815: Metal commodity contracts $ — $ 5.0 $ — Foreign exchange contracts — 0.1 — Total derivatives $ — $ 5.1 $ — Liabilities Derivatives: Derivatives not designated as hedging instruments under ASC 815: Metal commodity contracts $ — $ 9.4 (a) $ — Derivatives designated as hedging instruments under ASC 815: Interest rate swaps — 0.2 — Total derivatives $ — $ 9.6 (a) $ — (a) The offsetting cash collateral balance of $2.7 million held by the derivative counterparty brought the net metal commodity contract liability to $6.7 million and the net total derivative liability balance to $6.9 million. 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 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 on the valuation date. The Company also has commodity derivatives to lock in hot roll coil, crude oil, iron ore, and aluminum prices for varying time periods. The fair value of hot roll coil, crude oil, 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 (hot roll coil and crude oil), the Singapore Exchange, and the London Metals Exchange, respectively, for the commodity on the valuation date. In addition, the Company has numerous foreign exchange contracts to hedge variability in cash flows when a payment currency is different from our functional currency. 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 length, but in general, contracts are between 1 to 12 months The carrying and estimated fair values of our financial instruments at September 30, 2020 and December 31, 2019 were as follows: At September 30, 2020 At December 31, 2019 Carrying Amount Fair Value Carrying Amount Fair Value (In millions) Cash and cash equivalents $ 121.8 $ 121.8 $ 11.0 $ 11.0 Restricted cash 1.1 1.1 48.8 48.8 Receivables less provisions 396.5 396.5 425.1 425.1 Accounts payable 351.1 351.1 311.5 311.5 Long-term debt, including current portion 814.0 840.8 981.8 1,014.4 The estimated fair value of the Company’s cash and cash equivalents, restricted cash, receivables less provisions, 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).

Stockholders' Equity (Deficit),

Stockholders' Equity (Deficit), Accumulated Other Comprehensive Income (Loss) and Noncontrolling Interest	9 Months Ended
	Sep. 30, 2020
Equity [Abstract]
Stockholders' Equity (Deficit), Accumulated Other Comprehensive Income (Loss) and Noncontrolling Interest	NOTE 11: STOCKHOLDERS’ EQUITY (DEFICIT), ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS), AND NONCONTROLLING INTEREST The following table details changes in Ryerson Holding Corporation Stockholders’ Equity (Deficit) accounts for each quarterly period of the nine months ended September 30, 2020: Accumulated Other Comprehensive Income (Loss) Common Stock Treasury Stock Capital in Excess of Par Value Retained Earnings Foreign Currency Translation Benefit Plan Liabilities Cash Flow Hedge- Interest Rate Swap 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, 2020 37,996 $ 0.4 213 $ (6.6 ) $ 381.2 $ 99.6 $ (48.6 ) $ (253.1 ) $ (0.3 ) $ 6.0 $ 178.6 Net income — — — — — 16.4 — — — — 16.4 Foreign currency translation — — — — — — (8.5 ) — — — (8.5 ) Changes in defined benefit pension and other post-retirement benefit plans, net of tax of $0.6 — — — — — — — 1.8 — — 1.8 Stock-based compensation expense — — — — 0.6 — — — — — 0.6 Cash flow hedge - interest rate swap, net of tax of $1.2 — — — — — — — — (3.5 ) — (3.5 ) Balance at March 31, 2020 37,996 0.4 213 (6.6 ) 381.8 116.0 (57.1 ) (251.3 ) (3.8 ) 6.0 185.4 Net income (loss) — — — — — (25.6 ) — — — 0.1 (25.5 ) Foreign currency translation — — — — — — 1.7 — — (0.1 ) 1.6 Changes in defined benefit pension and other post-retirement benefit plans, net of tax of $0.7 — — — — — — — 2.0 — — 2.0 Stock-based compensation expense 334 — — — 0.4 — — — — — 0.4 Dividends paid to noncontrolling interest — — — — — — — — — (0.2 ) (0.2 ) Balance at June 30, 2020 38,330 0.4 213 (6.6 ) 382.2 90.4 (55.4 ) (249.3 ) (3.8 ) 5.8 163.7 Net income (loss) — — — — — (39.9 ) — — — 0.2 (39.7 ) Foreign currency translation — — — — — — 1.2 — — — 1.2 Changes in defined benefit pension and other post-retirement benefit plans, net of tax of $2.0 — — — — — — — 5.8 — — 5.8 Stock-based compensation expense — — — — 0.4 — — — — — 0.4 Cash flow hedge - interest rate swap, net of tax of $0.1 — — — — — — — — 0.3 — 0.3 Balance at September 30, 2020 38,330 $ 0.4 213 $ (6.6 ) $ 382.6 $ 50.5 $ (54.2 ) $ (243.5 ) $ (3.5 ) $ 6.0 $ 131.7 The following table details changes in Ryerson Holding Corporation Stockholders’ Equity (Deficit) accounts for each quarterly period of the nine months ended September 30, 2019 : Accumulated Other Comprehensive Income (Loss) Common Stock Treasury Stock Capital in Excess of Par Value Retained Earnings Foreign Currency Translation Benefit Plan Liabilities Cash Flow Hedge- Interest Rate Swap 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, 2019 37,656 $ 0.4 213 $ (6.6 ) $ 381.0 $ 14.2 $ (52.8 ) $ (264.0 ) $ 1.0 $ 2.7 $ 75.9 Net income — — — — — 29.5 — — — 0.1 29.6 Foreign currency translation — — — — — — 2.9 — — 0.1 3.0 Changes in defined benefit pension and other post-retirement benefit plans, net of tax of $0.3 — — — — — — — 0.9 — — 0.9 Adoption of accounting principal ASC 842, net of tax of $1.1 — — — — — 3.0 — — — — 3.0 Stock-based compensation expense 10 — — — 0.8 — — — — — 0.8 Cash flow hedge - interest rate swap, net of tax of $0.1 — — — — — — — — (0.4 ) — (0.4 ) Balance at March 31, 2019 37,666 0.4 213 (6.6 ) 381.8 46.7 (49.9 ) (263.1 ) 0.6 2.9 112.8 Net income — — — — — 16.4 — — — 0.1 16.5 Foreign currency translation — — — — — — 0.8 — — — 0.8 Changes in defined benefit pension and other post-retirement benefit plans, net of tax of $0.3 — — — — — — — 0.8 — — 0.8 Stock-based compensation expense 330 — — — 0.8 — — — — — 0.8 Purchase of subsidiary shares from noncontrolling interest — — — — (2.9 ) — — — — 2.9 — Cash flow hedge - interest rate swap, net of tax of $0.3 — — — — — — — — (0.6 ) — (0.6 ) Balance at June 30, 2019 37,996 0.4 213 (6.6 ) 379.7 63.1 (49.1 ) (262.3 ) — 5.9 131.1 Net income — — — — — 10.1 — — — 0.1 10.2 Foreign currency translation — — — — — — (1.3 ) — — (0.1 ) (1.4 ) Changes in defined benefit pension and other post-retirement benefit plans, net of tax of $0.3 — — — — — — — 0.8 — — 0.8 Stock-based compensation expense — — — — 0.8 — — — — — 0.8 Cash flow hedge - interest rate swap, net of tax of $0.2 — — — — — — — — (0.4 ) — (0.4 ) Balance at September 30, 2019 37,996 $ 0.4 213 $ (6.6 ) $ 380.5 $ 73.2 $ (50.4 ) $ (261.5 ) $ (0.4 ) $ 5.9 $ 141.1 The following table details changes in accumulated other comprehensive income (loss), net of tax, for the nine months ended September 30, 2020: Changes in Accumulated Other Comprehensive Income (Loss) by Component, net of tax Foreign Currency Translation Benefit Plan Liabilities Cash Flow Hedge - Interest Rate Swap (In millions) Balance at January 1, 2020 $ (48.6 ) $ (253.1 ) $ (0.3 ) Other comprehensive income (loss) before reclassifications (5.6 ) (35.1 ) (4.0 ) Amounts reclassified from accumulated other comprehensive income into net income — 44.7 0.8 Net current-period other comprehensive income (loss) (5.6 ) 9.6 (3.2 ) Balance at September 30, 2020 $ (54.2 ) $ (243.5 ) $ (3.5 ) The following table details the reclassifications out of accumulated other comprehensive income (loss) for the three and nine month periods ended September 30, 2020: 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 Consolidated Details about Accumulated Other September 30, 2020 Statements of Comprehensive Income (Loss) Components (In millions) Operations / Consolidated Balance Sheets Amortization of defined benefit pension and other post-retirement benefit plan items Actuarial loss $ 2.5 $ 7.5 Other income and (expense), net Pension settlement 53.2 54.3 Other income and (expense), net Prior service credits (0.5 ) (1.5 ) Other income and (expense), net Total before tax 55.2 60.3 Tax benefit (14.3 ) (15.6 ) Net of tax $ 40.9 $ 44.7 Cash flow hedge - interest rate swap Realized swap interest $ 0.5 $ 1.1 Interest and other expense on debt Tax benefit (0.1 ) (0.3 ) Net of tax $ 0.4 $ 0.8 The following table details the reclassifications out of accumulated other comprehensive income (loss) for the three and nine month periods ended September 30, 2019: 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 Consolidated Details about Accumulated Other September 30, 2019 Statements of Comprehensive Income (Loss) Components (In millions) Operations / Consolidated Balance Sheets Foreign Currency Translation Foreign currency translation gain $ — $ 0.2 Other income and (expense), net Tax provision — — Net of tax $ — $ 0.2 Cash flow hedge - interest rate swap Realized swap interest $ (0.4 ) $ (1.0 ) Interest and other expense on debt Tax provision 0.2 0.3 Net of tax $ (0.2 ) $ (0.7 ) Amortization of defined benefit pension and other post-retirement benefit plan items Actuarial loss $ 1.8 $ 5.4 Other income and (expense), net Pension settlement — 0.2 Other income and (expense), net Prior service credits (0.7 ) (2.2 ) Other income and (expense), net Total before tax 1.1 3.4 Tax benefit (0.3 ) (0.9 ) Net of tax $ 0.8 $ 2.5

Revenue Recognition

Revenue Recognition	9 Months Ended
	Sep. 30, 2020
Revenue Recognition [Abstract]
Revenue Recognition	NOTE 12: REVENUE RECOGNITION We are a leading value-added processor and distributor of industrial metals with operations in the United States, Canada, Mexico, and China. We purchase large quantities of metal products from primary producers and sell these materials in smaller quantities to a wide variety of metals-consuming industries. More than 75% of the metals products sold are processed by us by bending, beveling, blanking, blasting, burning, cutting-to-length, drilling, embossing, flattening, forming, grinding, laser cutting, machining, notching, painting, perforating, polishing, punching, rolling, sawing, scribing, shearing, slitting, stamping, tapping, threading, welding, or other techniques to process materials to a specified thickness, length, width, shape, and surface quality pursuant to specific customer orders. Disaggregated Revenue We have one operating and reportable segment, metals service centers. The Company derives substantially all of its sales from the distribution of metals. The following table shows the Company’s percentage of sales by major product line: Three Months Ended Nine Months Ended September 30, September 30, Product Line 2020 2019 2020 2019 Carbon Steel Flat 28 % 26 % 26 % 25 % Carbon Steel Plate 8 11 9 11 Carbon Steel Long 13 15 15 16 Stainless Steel Flat 16 15 16 15 Stainless Steel Plate 4 4 5 4 Stainless Steel Long 5 4 5 4 Aluminum Flat 16 16 14 16 Aluminum Plate 3 2 3 2 Aluminum Long 5 5 5 5 Other 2 2 2 2 Total 100 % 100 % 100 % 100 % A significant majority of the Company’s sales are attributable to its U.S. operations. The only operations attributed to foreign countries relate to the Company’s subsidiaries in Canada, China, and Mexico. The following table summarizes consolidated financial information of our operations by geographic location based on where sales originated: Three Months Ended September 30, Nine Months Ended September 30, 2020 2019 2020 2019 Net Sales (In millions) United States 737.9 $ 1,000.8 $ 2,337.7 $ 3,216.6 Foreign countries 93.6 103.6 275.9 323.5 Total $ 831.5 $ 1,104.4 $ 2,613.6 $ 3,540.1 Revenue is recognized either at a point in time or over time based on if the contract has an enforceable right to payment and the type of product that is being sold to the customer, with products that are determined to have no alternative use being recognized over time. The following table summarizes revenues by the type of item sold: Three Months Ended September 30, Nine Months Ended September 30, Timing of Revenue Recognition 2020 2019 2020 2019 Revenue on products with an alternative use 89 % 88 % 88 % 88 % Revenue on products with no alternative use 11 12 12 12 Total 100 % 100 % 100 % 100 % Contract Balances A receivable is recognized in the period in which an invoice is issued, which is generally when the product is delivered to the customer. Payment terms on invoiced amounts are typically 30 days from the invoice date. We do not have any contracts with significant financing components. Receivables, which are included in accounts receivables within the Condensed Consolidated Balance Sheet, from contracts with customers were $398.4 million and $428.6 million as of September 30, 2020 and December 31, 2019, respectively. Contract assets, which consist primarily of revenues recognized over time that have not yet been invoiced and estimates of the value of inventory that will be received in conjunction with product returns , are reported in prepaid expenses and other current assets within the Condensed Consolidated Balance Sheets. Contract liabilities, which consist primarily of accruals associated with amounts that will be paid to customers for volume rebates, cash discounts, sales returns and allowances, estimates of shipping and handling costs associated with performance obligations recorded over time, and bill and hold transactions are reported in other accrued liabilities within the Condensed Consolidated Balance Sheets. Significant changes in the contract assets and the contract liabilities balances during the period are as follows: Contract Assets Contract Liabilities (In millions) Beginning Balance at January 1, 2020 $ 13.5 $ 10.5 Contract liability satisfied during the period — (9.8 ) Contract liability incurred during the period — 8.3 Net change in contract assets and liabilities for products with no alternative use during the period (1.4 ) — Changes to reserves (0.5 ) (2.1 ) Ending Balance at September 30, 2020 $ 11.6 $ 6.9 The Company’s performance obligations are typically short-term in nature. As a result, the Company has elected the practical expedient that provides an exemption of the disclosure requirements regarding information about remaining performance obligations on contracts that have original expected durations of one year or less.

Provision for Credit Losses

Provision for Credit Losses	9 Months Ended
	Sep. 30, 2020
Credit Loss [Abstract]
Provision for Credit Losses	NOTE 13: PROVISION FOR CREDIT LOSSES The Company adopted ASU 2016-13 as of January 1, 2020. Results for all reporting periods follow the guidance under ASC 326 “Financial Instruments – Credit Losses” with periods beginning after January 1, 2020 conforming to ASU 2016-13 while prior period amounts continue to be reported in accordance with previously applicable GAAP. Total adjustments as a result of adopting the new guidance were immaterial to the financial statements. Provisions for allowances and claims on accounts receivables and contract assets are based upon historical rates, expected trends, and estimates of potential returns, allowances, customer discounts, and incentives. The Company considers all available information when assessing the adequacy of the provision for allowances, claims, and doubtful accounts. The Company performs ongoing credit evaluations of customers and sets credit limits based upon review of the customers’ current credit information, payment history, and the current economic and industry environments. The Company’s credit loss reserve consists of two parts: a) a provision for estimated credit losses based on historical experience and b) a reserve for specific customer collection issues that the Company has identified. Estimation of credit losses requires adjusting historical loss experience for current economic conditions and judgments about the probable effects of economic conditions on certain customers. We have reviewed recent events and circumstances due to the COVID-19 pandemic in relation to our provision for credit losses and have not made any material adjustments as of September 30, 2020. The following table provides a reconciliation of the provision for credit losses reported within the Consolidated Balance Sheets as of September 30, 2020: Changes in Provision for Expected Credit Losses (In millions) Balance at January 1, 2020 $ 3.5 Current period provision (0.3 ) Write-offs charged against allowance (1.4 ) Recoveries against allowance 0.2 Effect of foreign exchange rates (0.1 ) Balance at September 30, 2020 $ 1.9

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2020
Income Tax Disclosure [Abstract]
Income Taxes	NOTE 14: INCOME TAXES For the three months ended September 30, 2020, the Company recorded an income tax benefit of 19.3 In accordance with ASC 740, “Income Taxes,” the Company calculates its quarterly tax provision based on an estimated effective tax rate for the year, applies it to the results of each interim period and then adjusts that amount by certain discrete items. Due to volatility in macro-economic conditions associated with the COVID-19 pandemic, we may experience fluctuations in our forecasted earnings before income taxes as a result of events which cannot be predicted. As such, the Company's effective tax rate could be subject to unusual volatility as forecasted earnings before income taxes change. On March 27, 2020, President Trump signed into law the CARES Act, which, along with earlier issued IRS guidance, provides for deferral of certain taxes. The Company currently plans to defer the timing of estimated federal tax payments and payroll taxes as permitted by the CARES Act. Additionally, the Company did take advantage of accelerated Alternative Minimum Tax refunds as provided for in the CARES Act and received a refund of $12 million in the third quarter of 2020. As required by ASC 740, the Company assesses the realizability of its deferred tax assets. The Company records a valuation allowance when, based upon the evaluation of all available evidence, it is more-likely-than-not that all or a portion of the deferred tax assets will not be realized. In making 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 $13.7 million at September 30, 2020 and December 31, 2019. The U.S. Tax Cuts and Jobs Act (the “Act”) subjects a U.S. shareholder to tax on global intangible low-taxed income (“GILTI”) earned by certain foreign subsidiaries. The FASB Staff Q&A, Topic 740, No. 5, Accounting for Global Intangible Low-Taxed Income, states that an entity can make an accounting policy election to either recognize deferred taxes for temporary basis differences expected to reverse as GILTI in future years or provide for the tax expense related to GILTI in the year the tax is incurred. After considering the two options, the Company has elected to provide for the tax expense related to GILTI in the year the tax will occur. For the three-month and nine-month periods ended September 30, 2020, we have included a tax benefit of $2.0 million and $0.5 million, respectively, related to GILTI as part of our tax provision. For the three-month and nine-month periods ended September 30, 2019, we have included a $0.9 million tax benefit and a $1.9 million income tax expense, respectively, related to GILTI as part of our tax provision. The Company accounts for uncertain income tax positions in accordance with ASC 740. We anticipate that certain statutes of limitation will close within the next twelve months resulting in the reduction of the reserve for uncertain tax benefits related to various intercompany transactions. In the second quarter of 2020 we released $1.9 million of reserves bringing the unrecognized tax benefits balance from $4.4 million at December 31, 2019 to $2.5 million at September 30, 2020. We do not believe future release amounts will be material.

Earnings (Loss) Per Share

Earnings (Loss) Per Share	9 Months Ended
	Sep. 30, 2020
Earnings Per Share [Abstract]
Earnings (Loss) Per Share	NOTE 15: EARNINGS (LOSS) PER SHARE Basic earnings (loss) per share attributable to Ryerson Holding’s common stock is determined based on earnings (loss) for the period divided by the weighted average number of common shares outstanding during the period. Diluted earnings (loss) 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. The weighted average number of shares excluded as they would have had an antidilutive effect were 250,356 and 259,244 for the three and nine-month periods ended September 30, 2020, respectively. The following table sets forth the calculation of basic and diluted earnings (loss) per share: Three Months Ended September 30, Nine Months Ended September 30, Basic and diluted earnings (loss) per share 2020 2019 2020 2019 (In millions, except share and per share data) Numerator: Net income (loss) attributable to Ryerson Holding Corporation $ (39.9 ) $ 10.1 $ (49.1 ) $ 56.0 Denominator: Weighted average shares outstanding 38,117,397 37,783,761 37,994,139 37,668,629 Dilutive effect of stock-based awards — 182,090 — 240,814 Weighted average shares outstanding adjusted for dilutive securities 38,117,397 37,965,851 37,994,139 37,909,443 Earnings (loss) per share Basic $ (1.05 ) $ 0.27 $ (1.29 ) $ 1.49 Diluted $ (1.05 ) $ 0.27 $ (1.29 ) $ 1.48

Summary of Accounting and Finan

Summary of Accounting and Financial Policies (Policies)	9 Months Ended
	Sep. 30, 2020
Accounting Policies [Abstract]
Recent Accounting Pronouncements	Impact of Recently Issued Accounting Standards—Adopted In June 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016-13, “ Financial Instruments – Credit Losses: Measurement of Credit Losses on Financial Instruments. ” The standard and subsequently issued amendments require 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 update is effective for interim and annual reporting periods beginning after December 15, 2019. In August 2018, the FASB issued ASU 2018-15, “ Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract. license fees and implementation costs that are capitalized for hosting arrangements that are service contracts are classified as prepaid assets on the Company’s Condensed Consolidated Balance Sheet and the amortization of these costs are presented in warehousing, delivery, selling, general, and administrative expense on the Condensed Consolidated Statement of Comprehensive Income. In March 2020, the FASB issued ASU 2020-04, “Reference Rate Reform (Topic 848).” The amendments in this update provide optional expedients and exceptions for applying Generally Accepted Accounting Principles (“GAAP”) to contracts, hedging relationships, and other transactions affected by reference rate reform if certain criteria are met. The amendments apply only to contracts, hedging relationships, and other transactions that reference LIBOR or another reference rate expected to be discontinued because of reference rate reform. The expedients and exceptions provided by the amendments do not apply to contract modifications made and hedging relationships entered into or evaluated after December 31, 2022, except for hedging relationships existing as of December 31, 2022, that an entity has elected certain optional expedients for and that are retained through the end of the hedging relationship. The amendments in this update are effective for all entities as of March 12, 2020 through December 31, 2022. We adopted this guidance as of March 12, 2020 and there was no impact to our financial statements as no in-scope contract modifications occurred. Impact of Recently Issued Accounting Standards—Not Yet Adopted In December 2019, the FASB issued ASU 2019-12, “Income Taxes – Simplifying the Accounting for Income Taxes.”

Cash, Cash Equivalents, and R_2

Cash, Cash Equivalents, and Restricted Cash (Tables)	9 Months Ended
	Sep. 30, 2020
Cash And Cash Equivalents [Abstract]
Reconciliation of Cash, Cash Equivalents, and Restricted Cash	The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the Condensed Consolidated Balance Sheets that sum to the total of the beginning and ending cash balances shown in the Condensed Consolidated Statements of Cash Flows: September 30, December 31, 2020 2019 (In millions) Cash and cash equivalents $ 121.8 $ 11.0 Restricted cash 1.1 48.8 Total cash, cash equivalents, and restricted cash $ 122.9 $ 59.8

Inventories (Tables)

Inventories (Tables)	9 Months Ended
	Sep. 30, 2020
Inventory Disclosure [Abstract]
Schedule of Inventories	Inventories, at stated LIFO value, were classified at September 30, 2020 and December 31, 2019 as follows: September 30, December 31, 2020 2019 (In millions) In process and finished products $ 572.6 $ 742.9

Leases (Tables)

Leases (Tables)	9 Months Ended
	Sep. 30, 2020
Leases [Abstract]
Summary of Location and Amount of Lease Assets and Lease Liabilities	The following table summarizes the location and amount of lease assets and lease liabilities reported in our Condensed Consolidated Balance Sheet as of September 30, 2020 and December 31, 2019: September 30, December 31, Leases Balance Sheet Location 2020 2019 (In millions) Assets Operating lease assets Operating lease assets $ 112.3 $ 128.2 Finance lease assets Property, plant, and equipment, net (a) 50.0 54.2 Total lease assets $ 162.3 $ 182.4 Liabilities Current Operating Current portion of operating lease liabilities $ 20.9 $ 20.9 Finance Other accrued liabilities 9.6 12.4 Noncurrent Operating Noncurrent operating lease liabilities 97.1 112.8 Finance Other noncurrent liabilities 14.7 18.7 Total lease liabilities $ 142.3 $ 164.8 (a) Finance lease assets were recorded net of accumulated amortization of $23.5 million and $19.0 million as of September 30, 2020 and December 31, 2019, respectively.
Summary of Location and Amount of Lease Expense	The following table summarizes the location and amount of lease expense reported in our Condensed Consolidated Statements of Comprehensive Income for the three and nine month periods ended September 30, 2020 and 2019: Three Months Ended September 30, Nine Months Ended September 30, Lease Expense Location of Lease Expense Recognized in Income 2020 2019 2020 2019 (In millions) Operating lease expense Warehousing, delivery, selling, general, and administrative $ 6.1 $ 5.5 $ 18.0 $ 16.6 Finance lease expense Amortization of lease assets Warehousing, delivery, selling, general, and administrative 2.2 1.7 5.6 5.1 Interest on lease liabilities Interest and other expense on debt 0.3 0.4 1.0 1.3 Variable lease expense Warehousing, delivery, selling, general, and administrative 0.7 0.8 2.3 2.2 Short-term lease expense Warehousing, delivery, selling, general, and administrative 0.5 0.2 1.8 1.3 Total lease expense $ 9.8 $ 8.6 $ 28.7 $ 26.5
Schedule of Maturity Analysis of Lease Liabilities	The following table presents maturity analysis of lease liabilities at September 30, 2020: Maturity of Lease Liabilities Operating Leases (a) Finance Leases (In millions) 2020 $ 6.4 $ 3.4 2021 23.8 9.5 2022 20.1 6.0 2023 16.7 3.6 2024 15.5 2.9 After 2024 51.1 0.5 Total lease payments 133.6 25.9 Less: Interest (b) (15.6 ) (1.6 ) Present value of lease liabilities (c) $ 118.0 $ 24.3 (a) There were no operating leases with options to extend lease terms that are reasonably certain of being exercised or operating leases signed but not yet commenced. (b) Calculated using the discount rate for each lease. (c) Includes the current portion of $20.9 million for operating leases and $9.6 million for finance leases.
Schedule of Weighted-Average Remaining Lease Term and Discount Rate for Operating and Finance Leases	The following table shows the weighted-average remaining lease term and discount rate for operating and finance leases, respectively, at September 30, 2020 and December 31, 2019: September 30, December 31, Lease Term and Discount Rate 2020 2019 Weighted-average remaining lease term (years) Operating leases 7.5 7.9 Finance leases 2.7 2.8 Weighted-average discount rate Operating leases 3.4 % 3.6 % Finance leases 4.6 % 4.8 %
Schedule of Information Reported in Condensed Consolidated Statement of Cash Flows	Information reported in our Condensed Consolidated Statement of Cash Flows for the nine months ended September 30, 2020 and 2019 is summarized below: Nine Months Ended September 30, Other Information 2020 2019 (In millions) Cash paid for amounts included in the measurement of lease liabilities Operating cash flows from operating leases $ 18.9 $ 15.3 Operating cash flows from finance leases 1.0 1.3 Financing cash flows from finance leases 9.9 9.8 Assets obtained in exchange for lease obligations: Adoption of accounting principal ASC 842 — 82.3 Operating leases 0.9 12.5 Finance leases 1.4 1.2

Long-Term Debt (Tables)

Long-Term Debt (Tables)	9 Months Ended
	Sep. 30, 2020
Debt Disclosure [Abstract]
Long-Term Debt	Long-term debt consisted of the following at September 30, 2020 and December 31, 2019: September 30, December 31, 2020 2019 (In millions) Ryerson Credit Facility $ 310.0 $ 377.7 8.50% Senior Secured Notes due 2028 500.0 — 11.00% Senior Secured Notes due 2022 — 587.9 Foreign debt 7.4 13.2 Other debt 8.2 9.5 Unamortized debt issuance costs and discounts (11.6 ) (6.5 ) Total debt 814.0 981.8 Less: Ryerson Credit Facility - "first in, last out" subfacility — 34.3 Less: Short-term foreign debt 7.4 13.2 Less: Other short-term debt 1.7 1.7 Total long-term debt $ 804.9 $ 932.6

Employee Benefits (Tables)

Employee Benefits (Tables)	9 Months Ended
	Sep. 30, 2020
Compensation And Retirement Disclosure [Abstract]
Components of Net Periodic Benefit Cost (Credit)	The following tables summarize the components of net periodic benefit cost (credit) for the three and nine month periods ended September 30, 2020 and 2019 for the Ryerson pension plans and postretirement benefit plans other than pension: Three Months Ended September 30, Pension Benefits Other Benefits 2020 2019 2020 2019 (In millions) Components of net periodic benefit cost (credit) Service cost $ 0.8 $ 0.8 $ 0.1 $ 0.1 Interest cost 5.3 7.3 0.4 0.7 Expected return on assets (8.2 ) (9.2 ) — — Settlement expense 53.2 — — — Recognized actuarial (gain) loss 4.2 3.8 (1.7 ) (2.0 ) Amortization of prior service cost (credit) — 0.1 (0.5 ) (0.8 ) Net periodic benefit cost (credit) $ 55.3 $ 2.8 $ (1.7 ) $ (2.0 ) Nine Months Ended September 30, Pension Benefits Other Benefits 2020 2019 2020 2019 (In millions) Components of net periodic benefit cost (credit) Service cost $ 2.5 $ 2.5 $ 0.4 $ 0.4 Interest cost 15.7 21.9 1.3 1.9 Expected return on assets (24.4 ) (27.4 ) — — Settlement expense 54.3 0.2 — — Recognized actuarial (gain) loss 12.7 11.2 (5.2 ) (5.8 ) Amortization of prior service cost (credit) 0.1 0.1 (1.6 ) (2.3 ) Net periodic benefit cost (credit) $ 60.9 $ 8.5 $ (5.1 ) $ (5.8 )

Derivatives and Fair Value Me_2

Derivatives and Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2020
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, 2020 and December 31, 2019: Asset Derivatives Liability Derivatives Balance Sheet Location September 30, 2020 December 31, 2019 Balance Sheet Location September 30, 2020 December 31, 2019 Derivatives not designated as hedging instruments under ASC 815 (In millions) Metal commodity contracts Prepaid expenses and other current assets $ 1.5 $ 5.0 Other accrued liabilities $ 0.8 $ 9.4 (a) Crude oil contracts Prepaid expenses and other current assets — 0.1 Other accrued liabilities — — Derivatives designated as hedging instruments under ASC 815 Interest rate swaps Deferred charges and other assets — — Other noncurrent liabilities 4.6 0.2 Total derivatives $ 1.5 $ 5.1 $ 5.4 $ 9.6 (a) (a) The offsetting cash collateral balance of $2.7 million held by the derivative counterparty brought the net metal commodity contract liability to $6.7 million and the net total derivative liability balance to $6.9 million as of December 31, 2019.
Volume of Company 's Activity in Derivative Instruments	The following table presents the volume of the Company’s activity in derivative instruments as of September 30, 2020 and December 31, 2019: Notional Amount Derivative Instruments At September 30, 2020 At December 31, 2019 Unit of Measurement Hot roll coil swap contracts 28,502 47,155 Tons Aluminum swap contracts 14,478 23,949 Tons Nickel swap contracts 67 3,164 Tons Iron ore swap contracts — 420,000 Tons Crude oil swap contracts — 38,000 Barrels Foreign currency exchange contracts 1.6 million 2.0 million U.S. dollars Interest rate swaps 160 million 310 million U.S. dollars
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, 2020 and 2019: 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 2020 2019 2020 2019 Metal commodity contracts Cost of materials sold $ 2.0 $ (4.9 ) $ 1.3 $ (12.9 ) Crude oil commodity contracts Warehousing, delivery, selling, general, and administrative — — — 0.7 Foreign exchange contracts Other income and (expense), net (0.1 ) — — (0.1 ) Total $ 1.9 $ (4.9 ) $ 1.3 $ (12.3 )
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, 2020 and 2019: 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 2020 2019 2020 2019 (In millions) Interest rate swaps Interest and other expense on debt $ (0.5 ) $ 0.3 $ (1.1 ) $ 0.9
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, 2020: At September 30, 2020 Level 1 Level 2 Level 3 (In millions) Assets Derivatives: Derivatives not designated as hedging instruments under ASC 815: Metal commodity contracts $ — $ 1.5 $ — Liabilities Derivatives: Derivatives not designated as hedging instruments under ASC 815: Metal commodity contracts $ — $ 0.8 $ — Derivatives designated as hedging instruments under ASC 815: Interest rate swaps — 4.6 — Total derivatives $ — $ 5.4 $ — 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, 2019 : At December 31, 2019 Level 1 Level 2 Level 3 (In millions) Assets Derivatives: Derivatives not designated as hedging instruments under ASC 815: Metal commodity contracts $ — $ 5.0 $ — Foreign exchange contracts — 0.1 — Total derivatives $ — $ 5.1 $ — Liabilities Derivatives: Derivatives not designated as hedging instruments under ASC 815: Metal commodity contracts $ — $ 9.4 (a) $ — Derivatives designated as hedging instruments under ASC 815: Interest rate swaps — 0.2 — Total derivatives $ — $ 9.6 (a) $ — (a) The offsetting cash collateral balance of $2.7 million held by the derivative counterparty brought the net metal commodity contract liability to $6.7 million and the net total derivative liability balance to $6.9 million.
Carrying and Estimated Fair Values of Financial Instruments	The carrying and estimated fair values of our financial instruments at September 30, 2020 and December 31, 2019 were as follows: At September 30, 2020 At December 31, 2019 Carrying Amount Fair Value Carrying Amount Fair Value (In millions) Cash and cash equivalents $ 121.8 $ 121.8 $ 11.0 $ 11.0 Restricted cash 1.1 1.1 48.8 48.8 Receivables less provisions 396.5 396.5 425.1 425.1 Accounts payable 351.1 351.1 311.5 311.5 Long-term debt, including current portion 814.0 840.8 981.8 1,014.4

Stockholders' Equity (Deficit_2

Stockholders' Equity (Deficit), Accumulated Other Comprehensive Income (Loss) and Noncontrolling Interest (Tables)	9 Months Ended
	Sep. 30, 2020
Equity [Abstract]
Change in Stockholders' Equity (Deficit), Accumulated Other Comprehensive Income (Loss) and Noncontrolling Interest	The following table details changes in Ryerson Holding Corporation Stockholders’ Equity (Deficit) accounts for each quarterly period of the nine months ended September 30, 2020: Accumulated Other Comprehensive Income (Loss) Common Stock Treasury Stock Capital in Excess of Par Value Retained Earnings Foreign Currency Translation Benefit Plan Liabilities Cash Flow Hedge- Interest Rate Swap 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, 2020 37,996 $ 0.4 213 $ (6.6 ) $ 381.2 $ 99.6 $ (48.6 ) $ (253.1 ) $ (0.3 ) $ 6.0 $ 178.6 Net income — — — — — 16.4 — — — — 16.4 Foreign currency translation — — — — — — (8.5 ) — — — (8.5 ) Changes in defined benefit pension and other post-retirement benefit plans, net of tax of $0.6 — — — — — — — 1.8 — — 1.8 Stock-based compensation expense — — — — 0.6 — — — — — 0.6 Cash flow hedge - interest rate swap, net of tax of $1.2 — — — — — — — — (3.5 ) — (3.5 ) Balance at March 31, 2020 37,996 0.4 213 (6.6 ) 381.8 116.0 (57.1 ) (251.3 ) (3.8 ) 6.0 185.4 Net income (loss) — — — — — (25.6 ) — — — 0.1 (25.5 ) Foreign currency translation — — — — — — 1.7 — — (0.1 ) 1.6 Changes in defined benefit pension and other post-retirement benefit plans, net of tax of $0.7 — — — — — — — 2.0 — — 2.0 Stock-based compensation expense 334 — — — 0.4 — — — — — 0.4 Dividends paid to noncontrolling interest — — — — — — — — — (0.2 ) (0.2 ) Balance at June 30, 2020 38,330 0.4 213 (6.6 ) 382.2 90.4 (55.4 ) (249.3 ) (3.8 ) 5.8 163.7 Net income (loss) — — — — — (39.9 ) — — — 0.2 (39.7 ) Foreign currency translation — — — — — — 1.2 — — — 1.2 Changes in defined benefit pension and other post-retirement benefit plans, net of tax of $2.0 — — — — — — — 5.8 — — 5.8 Stock-based compensation expense — — — — 0.4 — — — — — 0.4 Cash flow hedge - interest rate swap, net of tax of $0.1 — — — — — — — — 0.3 — 0.3 Balance at September 30, 2020 38,330 $ 0.4 213 $ (6.6 ) $ 382.6 $ 50.5 $ (54.2 ) $ (243.5 ) $ (3.5 ) $ 6.0 $ 131.7 The following table details changes in Ryerson Holding Corporation Stockholders’ Equity (Deficit) accounts for each quarterly period of the nine months ended September 30, 2019 : Accumulated Other Comprehensive Income (Loss) Common Stock Treasury Stock Capital in Excess of Par Value Retained Earnings Foreign Currency Translation Benefit Plan Liabilities Cash Flow Hedge- Interest Rate Swap 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, 2019 37,656 $ 0.4 213 $ (6.6 ) $ 381.0 $ 14.2 $ (52.8 ) $ (264.0 ) $ 1.0 $ 2.7 $ 75.9 Net income — — — — — 29.5 — — — 0.1 29.6 Foreign currency translation — — — — — — 2.9 — — 0.1 3.0 Changes in defined benefit pension and other post-retirement benefit plans, net of tax of $0.3 — — — — — — — 0.9 — — 0.9 Adoption of accounting principal ASC 842, net of tax of $1.1 — — — — — 3.0 — — — — 3.0 Stock-based compensation expense 10 — — — 0.8 — — — — — 0.8 Cash flow hedge - interest rate swap, net of tax of $0.1 — — — — — — — — (0.4 ) — (0.4 ) Balance at March 31, 2019 37,666 0.4 213 (6.6 ) 381.8 46.7 (49.9 ) (263.1 ) 0.6 2.9 112.8 Net income — — — — — 16.4 — — — 0.1 16.5 Foreign currency translation — — — — — — 0.8 — — — 0.8 Changes in defined benefit pension and other post-retirement benefit plans, net of tax of $0.3 — — — — — — — 0.8 — — 0.8 Stock-based compensation expense 330 — — — 0.8 — — — — — 0.8 Purchase of subsidiary shares from noncontrolling interest — — — — (2.9 ) — — — — 2.9 — Cash flow hedge - interest rate swap, net of tax of $0.3 — — — — — — — — (0.6 ) — (0.6 ) Balance at June 30, 2019 37,996 0.4 213 (6.6 ) 379.7 63.1 (49.1 ) (262.3 ) — 5.9 131.1 Net income — — — — — 10.1 — — — 0.1 10.2 Foreign currency translation — — — — — — (1.3 ) — — (0.1 ) (1.4 ) Changes in defined benefit pension and other post-retirement benefit plans, net of tax of $0.3 — — — — — — — 0.8 — — 0.8 Stock-based compensation expense — — — — 0.8 — — — — — 0.8 Cash flow hedge - interest rate swap, net of tax of $0.2 — — — — — — — — (0.4 ) — (0.4 ) Balance at September 30, 2019 37,996 $ 0.4 213 $ (6.6 ) $ 380.5 $ 73.2 $ (50.4 ) $ (261.5 ) $ (0.4 ) $ 5.9 $ 141.1
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, 2020: Changes in Accumulated Other Comprehensive Income (Loss) by Component, net of tax Foreign Currency Translation Benefit Plan Liabilities Cash Flow Hedge - Interest Rate Swap (In millions) Balance at January 1, 2020 $ (48.6 ) $ (253.1 ) $ (0.3 ) Other comprehensive income (loss) before reclassifications (5.6 ) (35.1 ) (4.0 ) Amounts reclassified from accumulated other comprehensive income into net income — 44.7 0.8 Net current-period other comprehensive income (loss) (5.6 ) 9.6 (3.2 ) Balance at September 30, 2020 $ (54.2 ) $ (243.5 ) $ (3.5 )
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, 2020: 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 Consolidated Details about Accumulated Other September 30, 2020 Statements of Comprehensive Income (Loss) Components (In millions) Operations / Consolidated Balance Sheets Amortization of defined benefit pension and other post-retirement benefit plan items Actuarial loss $ 2.5 $ 7.5 Other income and (expense), net Pension settlement 53.2 54.3 Other income and (expense), net Prior service credits (0.5 ) (1.5 ) Other income and (expense), net Total before tax 55.2 60.3 Tax benefit (14.3 ) (15.6 ) Net of tax $ 40.9 $ 44.7 Cash flow hedge - interest rate swap Realized swap interest $ 0.5 $ 1.1 Interest and other expense on debt Tax benefit (0.1 ) (0.3 ) Net of tax $ 0.4 $ 0.8 The following table details the reclassifications out of accumulated other comprehensive income (loss) for the three and nine month periods ended September 30, 2019: 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 Consolidated Details about Accumulated Other September 30, 2019 Statements of Comprehensive Income (Loss) Components (In millions) Operations / Consolidated Balance Sheets Foreign Currency Translation Foreign currency translation gain $ — $ 0.2 Other income and (expense), net Tax provision — — Net of tax $ — $ 0.2 Cash flow hedge - interest rate swap Realized swap interest $ (0.4 ) $ (1.0 ) Interest and other expense on debt Tax provision 0.2 0.3 Net of tax $ (0.2 ) $ (0.7 ) Amortization of defined benefit pension and other post-retirement benefit plan items Actuarial loss $ 1.8 $ 5.4 Other income and (expense), net Pension settlement — 0.2 Other income and (expense), net Prior service credits (0.7 ) (2.2 ) Other income and (expense), net Total before tax 1.1 3.4 Tax benefit (0.3 ) (0.9 ) Net of tax $ 0.8 $ 2.5

Revenue Recognition (Tables)

Revenue Recognition (Tables)	9 Months Ended
	Sep. 30, 2020
Revenue Recognition [Abstract]
Summary of Disaggregated Revenue	The Company derives substantially all of its sales from the distribution of metals. The following table shows the Company’s percentage of sales by major product line: Three Months Ended Nine Months Ended September 30, September 30, Product Line 2020 2019 2020 2019 Carbon Steel Flat 28 % 26 % 26 % 25 % Carbon Steel Plate 8 11 9 11 Carbon Steel Long 13 15 15 16 Stainless Steel Flat 16 15 16 15 Stainless Steel Plate 4 4 5 4 Stainless Steel Long 5 4 5 4 Aluminum Flat 16 16 14 16 Aluminum Plate 3 2 3 2 Aluminum Long 5 5 5 5 Other 2 2 2 2 Total 100 % 100 % 100 % 100 % A significant majority of the Company’s sales are attributable to its U.S. operations. The only operations attributed to foreign countries relate to the Company’s subsidiaries in Canada, China, and Mexico. The following table summarizes consolidated financial information of our operations by geographic location based on where sales originated: Three Months Ended September 30, Nine Months Ended September 30, 2020 2019 2020 2019 Net Sales (In millions) United States 737.9 $ 1,000.8 $ 2,337.7 $ 3,216.6 Foreign countries 93.6 103.6 275.9 323.5 Total $ 831.5 $ 1,104.4 $ 2,613.6 $ 3,540.1 Revenue is recognized either at a point in time or over time based on if the contract has an enforceable right to payment and the type of product that is being sold to the customer, with products that are determined to have no alternative use being recognized over time. The following table summarizes revenues by the type of item sold: Three Months Ended September 30, Nine Months Ended September 30, Timing of Revenue Recognition 2020 2019 2020 2019 Revenue on products with an alternative use 89 % 88 % 88 % 88 % Revenue on products with no alternative use 11 12 12 12 Total 100 % 100 % 100 % 100 %
Summary of Significant Changes in Contract Assets and Contract Liabilities Balances	Significant changes in the contract assets and the contract liabilities balances during the period are as follows: Contract Assets Contract Liabilities (In millions) Beginning Balance at January 1, 2020 $ 13.5 $ 10.5 Contract liability satisfied during the period — (9.8 ) Contract liability incurred during the period — 8.3 Net change in contract assets and liabilities for products with no alternative use during the period (1.4 ) — Changes to reserves (0.5 ) (2.1 ) Ending Balance at September 30, 2020 $ 11.6 $ 6.9

Provision for Credit Losses (Ta

Provision for Credit Losses (Tables)	9 Months Ended
	Sep. 30, 2020
Credit Loss [Abstract]
Schedule of Reconciliation of Provision for Credit Losses	The following table provides a reconciliation of the provision for credit losses reported within the Consolidated Balance Sheets as of September 30, 2020: Changes in Provision for Expected Credit Losses (In millions) Balance at January 1, 2020 $ 3.5 Current period provision (0.3 ) Write-offs charged against allowance (1.4 ) Recoveries against allowance 0.2 Effect of foreign exchange rates (0.1 ) Balance at September 30, 2020 $ 1.9

Earnings (Loss) Per Share (Tabl

Earnings (Loss) Per Share (Tables)	9 Months Ended
	Sep. 30, 2020
Earnings Per Share [Abstract]
Calculation of Basic and Diluted Earnings (Loss) Per Share	The following table sets forth the calculation of basic and diluted earnings (loss) per share: Three Months Ended September 30, Nine Months Ended September 30, Basic and diluted earnings (loss) per share 2020 2019 2020 2019 (In millions, except share and per share data) Numerator: Net income (loss) attributable to Ryerson Holding Corporation $ (39.9 ) $ 10.1 $ (49.1 ) $ 56.0 Denominator: Weighted average shares outstanding 38,117,397 37,783,761 37,994,139 37,668,629 Dilutive effect of stock-based awards — 182,090 — 240,814 Weighted average shares outstanding adjusted for dilutive securities 38,117,397 37,965,851 37,994,139 37,909,443 Earnings (loss) per share Basic $ (1.05 ) $ 0.27 $ (1.29 ) $ 1.49 Diluted $ (1.05 ) $ 0.27 $ (1.29 ) $ 1.48

Financial Statements - Addition

Financial Statements - Additional Information (Detail)	Sep. 30, 2020shares
Accounting Policies [Abstract]
Parent company shares owned by affiliates	21,037,500
Parent company percentage owned by affiliates	55.00%

Cash, Cash Equivalents, and R_3

Cash, Cash Equivalents, and Restricted Cash - Reconciliation of Cash, Cash Equivalents, and Restricted Cash (Detail) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Cash And Cash Equivalents [Abstract]
Cash and cash equivalents	$ 121.8	$ 11
Restricted cash	1.1	48.8
Total cash, cash equivalents, and restricted cash	$ 122.9	$ 59.8

Cash, Cash Equivalents, and R_4

Cash, Cash Equivalents, and Restricted Cash - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Sep. 30, 2020	Jul. 22, 2020
Restricted Cash And Cash Equivalents Items [Line Items]
Net proceeds from sale leaseback transaction	$ 61.5
Restricted cash	48.8	$ 1.1
Property Plant and Equipment [Member]
Restricted Cash And Cash Equivalents Items [Line Items]
Restricted cash	47.6	0
Senior Secured Notes Due in 2022 [Member]
Restricted Cash And Cash Equivalents Items [Line Items]
Debt instrument, face amount			$ 650
Letter Of Credit [Member]
Restricted Cash And Cash Equivalents Items [Line Items]
Restricted cash	$ 1.2	$ 1.1

Inventories - Schedule of Inven

Inventories - Schedule of Inventories (Detail) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Inventory Disclosure [Abstract]
In process and finished products	$ 572.6	$ 742.9

Inventories - Additional Inform

Inventories - Additional Information (Detail) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Inventory Disclosure [Abstract]
Amount by which inventory stated at last-in first-out (LIFO) is less than (in excess of) inventory stated at current cost	$ 74	$ 51
Inventories accounted under the LIFO method	91.00%	91.00%
Consignment inventory	$ 4.7	$ 5.6

Leases - Additional Information

Leases - Additional Information (Detail) - Maximum [Member]	9 Months Ended
	Sep. 30, 2020
Lessee Lease Description [Line Items]
Noncancelable operating leases expire period	2032
Finance leases expire period	2027

Leases - Summary of Location an

Leases - Summary of Location and Amount of Lease Assets and Lease Liabilities (Detail) - USD ($) $ in Millions		Sep. 30, 2020	Dec. 31, 2019
Assets
Operating lease assets		$ 112.3	$ 128.2
Finance lease assets		$ 50	$ 54.2
Finance lease, Right-of-use asset, Statement of financial position [Extensible List]	[1]	us-gaap:PropertyPlantAndEquipmentNet	us-gaap:PropertyPlantAndEquipmentNet
Total lease assets		$ 162.3	$ 182.4
Liabilities
Operating lease liabilities, current		20.9	20.9
Finance lease liabilities, current		$ 9.6	$ 12.4
Finance lease, Liability, Current, Statement of financial position [Extensible List]		us-gaap:OtherAccruedLiabilitiesCurrent	us-gaap:OtherAccruedLiabilitiesCurrent
Operating lease liabilities, noncurrent		$ 97.1	$ 112.8
Finance lease liabilities, noncurrent		$ 14.7	$ 18.7
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]		us-gaap:OtherLiabilitiesNoncurrent	us-gaap:OtherLiabilitiesNoncurrent
Total lease liabilities		$ 142.3	$ 164.8
[1]	Finance lease assets were recorded net of accumulated amortization of $23.5 million and $19.0 million as of September 30, 2020 and December 31, 2019, respectively.

Leases - Summary of Location _2

Leases - Summary of Location and Amount of Lease Assets and Lease Liabilities (Parenthetical) (Detail) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Lessee Lease Description [Line Items]
Accumulated amortization	$ 392.9	$ 366.8
Finance Lease [Member]
Lessee Lease Description [Line Items]
Accumulated amortization	$ 23.5	$ 19

Leases - Summary of Location _3

Leases - Summary of Location and Amount of Lease Expense (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Lease Expense
Total lease expense	$ 9.8	$ 8.6	$ 28.7	$ 26.5
Warehousing, Delivery, Selling, General, and Administrative [Member]
Lease Expense
Operating lease expense	6.1	5.5	18	16.6
Finance lease expense
Amortization of lease assets	2.2	1.7	5.6	5.1
Variable lease expense	0.7	0.8	2.3	2.2
Short-term lease expense	0.5	0.2	1.8	1.3
Interest and Other Expense on Debt [Member]
Finance lease expense
Interest on lease liabilities	$ 0.3	$ 0.4	$ 1	$ 1.3

Leases - Schedule of Maturity A

Leases - Schedule of Maturity Analysis of Lease Liabilities (Detail) $ in Millions	Sep. 30, 2020USD ($)
Operating Leases
2020	$ 6.4	[1]
2021	23.8	[1]
2022	20.1	[1]
2023	16.7	[1]
2024	15.5	[1]
After 2024	51.1	[1]
Total lease payments	133.6	[1]
Less: Interest	(15.6)	[1],[2]
Present value of lease liabilities	118	[1],[3]
Finance Leases
2020	3.4
2021	9.5
2022	6
2023	3.6
2024	2.9
After 2024	0.5
Total lease payments	25.9
Less: Interest	(1.6)	[2]
Present value of lease liabilities	$ 24.3	[3]
[1]	There were no operating leases with options to extend lease terms that are reasonably certain of being exercised or operating leases signed but not yet commenced.
[2]	Calculated using the discount rate for each lease.
[3]	Includes the current portion of $20.9 million for operating leases and $9.6 million for finance leases.

Leases - Schedule of Maturity_2

Leases - Schedule of Maturity Analysis of Lease Liabilities (Parenthetical) (Detail) - USD ($)	Sep. 30, 2020	Dec. 31, 2019
Leases [Abstract]
Operating leases with options to extend lease terms that are reasonably certain of being exercised	$ 0
Legally binding minimum lease payments for leases signed but not yet commenced	0
Operating leases, current portion	20,900,000	$ 20,900,000
Finance leases, current portion	$ 9,600,000	$ 12,400,000

Leases - Schedule of Weighted-A

Leases - Schedule of Weighted-Average Remaining Lease Term and Discount Rate for Operating and Finance Leases (Detail)	Sep. 30, 2020	Dec. 31, 2019
Leases [Abstract]
Operating leases, Weighted-average remaining lease term	7 years 6 months	7 years 10 months 24 days
Finance leases, Weighted-average remaining lease term	2 years 8 months 12 days	2 years 9 months 18 days
Operating leases, Weighted-average discount rate	3.40%	3.60%
Finance leases, Weighted-average discount rate	4.60%	4.80%

Leases - Schedule of Informatio

Leases - Schedule of Information Reported in Condensed Consolidated Statement of Cash Flows (Detail) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	$ 18.9	$ 15.3
Operating cash flows from finance leases	1	1.3
Financing cash flows from finance leases	9.9	9.8
Assets obtained in exchange for lease obligations:
Adoption of accounting principal ASC 842		82.3
Operating leases	0.9	12.5
Finance leases	$ 1.4	1.2
ASU 2016-02 [Member]
Assets obtained in exchange for lease obligations:
Adoption of accounting principal ASC 842		$ 82.3

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($)	9 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill	$ 120,300,000	$ 120,300,000
Impairment charge	$ 0
Off schedule goodwill impairment test date	May 31, 2020

Long-Term Debt - Long-Term Debt

Long-Term Debt - Long-Term Debt (Detail) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Foreign debt	$ 7.4	$ 13.2
Other debt	8.2	9.5
Unamortized debt issuance costs and discounts	(11.6)	(6.5)
Total debt	814	981.8
Less: Other short-term debt	1.7	1.7
Total long-term debt	804.9	932.6
2022 Notes [Member]
Debt Instrument [Line Items]
Senior secured notes		587.9
2028 Notes [Member]
Debt Instrument [Line Items]
Senior secured notes	500
Ryerson Credit Facility [Member]
Debt Instrument [Line Items]
Ryerson Credit Facility	$ 310	377.7
Ryerson Credit Facility [Member] | FILO Facility [Member]
Debt Instrument [Line Items]
Less: Ryerson Credit Facility - "first in, last out" subfacility		$ 34.3

Long-Term Debt - Ryerson Credit

Long-Term Debt - Ryerson Credit Facility - Additional Information (Detail) - USD ($)	Nov. 16, 2016	Nov. 30, 2019	Jun. 30, 2019	Sep. 30, 2020	Dec. 31, 2019	Sep. 23, 2019	Jun. 28, 2018
Ryerson Credit Facility [Member]
Debt Instrument [Line Items]
Revolving credit facility maximum borrowing capacity				$ 1,000,000,000			$ 1,000,000,000
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				$ 310,000,000	$ 377,700,000
Letters of credit				11,000,000	11,000,000
Available credit facility				$ 237,000,000	$ 348,000,000
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, the Canadian borrower) 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, the Canadian borrower). 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			2019-06
Hedged debt amount			$ 60,000,000
Derivative fixed interest rate		1.539%	1.729%
Derivative maturity period			2022-06
Ryerson Credit Facility [Member] | Second Interest Rate Swap [Member]
Debt Instrument [Line Items]
Interest rate swap agreement date		2019-11
Hedged debt amount		$ 100,000,000
Derivative fixed interest rate		1.539%	1.729%
Derivative maturity period		2022-11
Ryerson Credit Facility [Member] | All Interest Rate Swap [Member]
Debt Instrument [Line Items]
Weighted average interest rate				2.20%	3.20%
Ryerson Credit Facility [Member] | Federal Funds Rate [Member]
Debt Instrument [Line Items]
Spread over base interest rate				0.50%
Ryerson Credit Facility [Member] | Prime Rate and One Month LIBOR Rate [Member]
Debt Instrument [Line Items]
Spread over base interest rate				1.00%
Ryerson Credit Facility [Member] | 30 Day LIBOR Rate [Member]
Debt Instrument [Line Items]
Spread over base interest rate				1.00%
Ryerson Credit Facility [Member] | One Month Canadian Bankers Acceptance Rate [Member]
Debt Instrument [Line Items]
Spread over base interest rate				1.00%
Ryerson Credit Facility [Member] | US Subsidiaries [Member]
Debt Instrument [Line Items]
Revolving credit facility maximum borrowing capacity				$ 940,000,000
Ryerson Credit Facility [Member] | Canadian Subsidiaries [Member]
Debt Instrument [Line Items]
Revolving credit facility maximum borrowing capacity				$ 60,000,000
Ryerson Credit Facility [Member] | Canadian Subsidiaries [Member] | Federal Funds Rate [Member]
Debt Instrument [Line Items]
Spread over base interest rate				0.50%
Ryerson Credit Facility [Member] | Minimum [Member] | Base Rate and Canadian Prime Rate [Member]
Debt Instrument [Line Items]
Spread over base interest rate				0.25%
Ryerson Credit Facility [Member] | Minimum [Member] | LIBOR and Banker's Acceptance Rate [Member]
Debt Instrument [Line Items]
Spread over base interest rate				1.25%
Ryerson Credit Facility [Member] | Maximum [Member] | Base Rate and Canadian Prime Rate [Member]
Debt Instrument [Line Items]
Spread over base interest rate				0.50%
Ryerson Credit Facility [Member] | Maximum [Member] | LIBOR and Banker's Acceptance Rate [Member]
Debt Instrument [Line Items]
Spread over base interest rate				1.50%
Old Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Revolving credit facility maximum borrowing capacity	$ 1,000,000,000
Amended Old Credit Facility [Member]
Debt Instrument [Line Items]
Revolving credit facility maximum borrowing capacity	$ 750,000,000
FILO Facility [Member] | Ryerson Credit Facility [Member]
Debt Instrument [Line Items]
Revolving credit facility maximum borrowing capacity						$ 67,900,000
Credit facility maturity date				Jun. 30, 2020
Outstanding borrowings					$ 34,300,000
FILO Facility [Member] | Ryerson Credit Facility [Member] | Minimum [Member] | Base Rate [Member]
Debt Instrument [Line Items]
Spread over base interest rate				1.25%
FILO Facility [Member] | Ryerson Credit Facility [Member] | Minimum [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Spread over base interest rate				2.25%
FILO Facility [Member] | Ryerson Credit Facility [Member] | Maximum [Member] | Base Rate [Member]
Debt Instrument [Line Items]
Spread over base interest rate				1.50%
FILO Facility [Member] | Ryerson Credit Facility [Member] | Maximum [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Spread over base interest rate				2.50%

Long-Term Debt - 2022 Notes - A

Long-Term Debt - 2022 Notes - Additional Information (Detail) - 2022 Notes [Member] - USD ($) $ in Millions	Aug. 21, 2020	Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2019	May 24, 2016
Debt Instrument [Line Items]
Debt Instrument Percentage					11.00%
Principal amount of debt instrument repurchased			$ 57.6	$ 11.6
Debt instruments senior notes retired			56.7	11.8
Gross amount of debt extinguished	$ 530.3
Other Income and (Expense), Net [Member]
Debt Instrument [Line Items]
Gain (loss) on retirement of debt		$ (17.1)	$ 0.9	$ (0.2)

Long-Term Debt - 2028 Notes - A

Long-Term Debt - 2028 Notes - Additional Information (Detail) - USD ($) $ in Millions	Oct. 30, 2020	Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2020	Sep. 30, 2019	Jul. 22, 2020	May 24, 2016
2028 Notes [Member]
Debt Instrument [Line Items]
Debt instrument, face amount						$ 500
Debt Instrument Percentage						8.50%
2028 Notes [Member] | Scenario Forecast [Member] | Announced Redemption [Member]
Debt Instrument [Line Items]
Redemption price as a percentage of principal amount	103.00%
Debt instrument redemption amount partial	$ 50
Debt instrument, redemption period, end date	Oct. 30, 2020
Debt instrument redemption amount outstanding	$ 450
2028 Notes [Member] | Redeemable in twelve months beginning August 1, 2023 [Member]
Debt Instrument [Line Items]
Redemption price as a percentage of principal amount				104.25%
2028 Notes [Member] | Redeemable in twelve months beginning August 1, 2024 [Member]
Debt Instrument [Line Items]
Redemption price as a percentage of principal amount				102.125%
2028 Notes [Member] | Redeemable in twelve months beginning August 1, 2025 and thereafter [Member]
Debt Instrument [Line Items]
Redemption price as a percentage of principal amount				100.00%
2028 Notes [Member] | Redeemable before August 1, 2023 [Member]
Debt Instrument [Line Items]
Redemption price as a percentage of principal amount				100.00%
2028 Notes [Member] | Redeemable before August 1, 2023 with the net cash proceeds from certain equity offerings [Member]
Debt Instrument [Line Items]
Redemption price as a percentage of principal amount				108.50%
Percentage of principal amount debt can be redeemed				40.00%
2028 Notes [Member] | Redeemable each twelve months commencing on July 22, 2020 and prior to August 1, 2023 [Member]
Debt Instrument [Line Items]
Redemption price as a percentage of principal amount				103.00%
Percentage of principal amount debt can be redeemed				10.00%
2028 Notes [Member] | Redeemable one time prior to August 1, 2022 from the net cash proceeds received from the sale of real property [Member]
Debt Instrument [Line Items]
Redemption price as a percentage of principal amount				104.00%
Principal amount debt can be redeemed				$ 100
2022 Notes [Member]
Debt Instrument [Line Items]
Debt Instrument Percentage							11.00%
2022 Notes [Member] | Other Income and (Expense), Net [Member]
Debt Instrument [Line Items]
(Gain) loss on retirement of debt		$ 17.1	$ (0.9)		$ 0.2

Long-Term Debt - Foreign Debt -

Long-Term Debt - Foreign Debt - Additional Information (Detail) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Foreign debt	$ 7.4	$ 13.2
Foreign Debt [Member]
Debt Instrument [Line Items]
Available credit facility	39	32
Letters of credit issued by our foreign subsidiaries	4	3
Foreign Debt [Member] | Owed to Banks [Member] | Ryerson China [Member]
Debt Instrument [Line Items]
Foreign debt	$ 7.4	$ 13.2
Weighted average interest rate	3.90%	4.30%

Employee Benefits - Components

Employee Benefits - Components of Net Periodic Benefit Cost (Credit) (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Settlement expense			$ 54.3	$ 0.2
Pension Benefits [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	$ 0.8	$ 0.8	2.5	2.5
Interest cost	5.3	7.3	15.7	21.9
Expected return on assets	(8.2)	(9.2)	(24.4)	(27.4)
Settlement expense	53.2		54.3	0.2
Recognized actuarial (gain) loss	4.2	3.8	12.7	11.2
Amortization of prior service cost (credit)		0.1	0.1	0.1
Net periodic benefit cost (credit)	55.3	2.8	60.9	8.5
Other Benefits [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	0.1	0.1	0.4	0.4
Interest cost	0.4	0.7	1.3	1.9
Recognized actuarial (gain) loss	(1.7)	(2)	(5.2)	(5.8)
Amortization of prior service cost (credit)	(0.5)	(0.8)	(1.6)	(2.3)
Net periodic benefit cost (credit)	$ (1.7)	$ (2)	$ (5.1)	$ (5.8)

Employee Benefits - Additional

Employee Benefits - Additional Information (Detail) - USD ($) $ in Millions	Sep. 30, 2020	Sep. 28, 2020	Sep. 30, 2020	Sep. 30, 2020
Compensation And Retirement Disclosure [Abstract]
Payment price for purchased annuities on behalf of participants		$ 95.2
Pension settlement charge due to annuitization	$ 52.5		$ 52.5	$ 52.5
Discount rate	2.59%			3.15%
Expected long-term rate of return on pension assets	5.25%			5.75%
Contribution to the pension plan fund				$ 7
Pension contributions deferred until next fiscal year	$ 12		$ 12	$ 12

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) $ in Millions	Jan. 02, 2020Area	Sep. 30, 2020USD ($)
Loss Contingencies [Line Items]
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
Remediation plan description		the EPA indicated that it expected PRPs to submit a plan during 2019 to start remediation of the river and harbor per the original ROD within the next two to three years. The EPA also indicated that it expected allocation of amounts among the parties to be determined in the same two to three-year time frame.
Number of areas to perform remedial design work | Area	5
Percentage of acreage on remediation	52.00%
Minimum [Member]
Loss Contingencies [Line Items]
Remediation plan due date		2 years
Remediation plan allocation of amount due date		2 years
Maximum [Member]
Loss Contingencies [Line Items]
Remediation plan due date		3 years
Remediation plan allocation of amount due date		3 years

Derivatives and Fair Value Me_3

Derivatives and Fair Value Measurements - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2020USD ($)DerivativeInstrument	Dec. 31, 2019USD ($)	Nov. 30, 2019USD ($)	Jun. 30, 2019USD ($)
Derivatives Fair Value [Line Items]
Fair value of interest rate swaps	$ 4,600,000
Derivative liabilities, offset against cash collateral	$ 0	$ 2,700,000
Minimum [Member]
Derivatives Fair Value [Line Items]
General term for commodity and exchange contracts	1 month
Maximum [Member]
Derivatives Fair Value [Line Items]
General term for commodity and exchange contracts	12 months
Interest Rate Swap [Member]
Derivatives Fair Value [Line Items]
Derivative notional amount	$ 160,000,000	$ 310,000,000
Derivative gain (loss) to be reclassified into interest income during next 12 months	$ 2,300,000
Ryerson Credit Facility [Member]
Derivatives Fair Value [Line Items]
Number of derivative instruments | DerivativeInstrument	2
Ryerson Credit Facility [Member] | Interest Rate Swap [Member]
Derivatives Fair Value [Line Items]
Derivative notional amount			$ 100,000,000
Derivative fixed interest rate			1.539%	1.729%
Ryerson Credit Facility [Member] | Second Interest Rate Swaps [Member]
Derivatives Fair Value [Line Items]
Derivative notional amount				$ 60,000,000
Derivative fixed interest rate			1.539%	1.729%

Derivatives and Fair Value Me_4

Derivatives and Fair Value Measurements - Location and Fair Value Amount of Derivative Instruments (Detail) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Derivatives Fair Value [Line Items]
Asset Derivatives, Fair Value	$ 1.5	$ 5.1
Liability Derivatives, Fair Value	5.4	9.6	[1]
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	1.5	5
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	0.8	9.4	[1]
Derivatives Not Designated as Hedging Instruments under ASC 815 [Member] | Crude Oil Contracts [Member] | Prepaid Expenses and Other Current Assets [Member]
Derivatives Fair Value [Line Items]
Asset Derivatives, Fair Value		0.1
Derivatives designated as hedging instruments under ASC 815 [Member] | Interest Rate Swap [Member] | Other Noncurrent Liabilities [Member]
Derivatives Fair Value [Line Items]
Liability Derivatives, Fair Value	$ 4.6	$ 0.2
[1]	The offsetting cash collateral balance of $2.7 million held by the derivative counterparty brought the net metal commodity contract liability to $6.7 million and the net total derivative liability balance to $6.9 million as of December 31, 2019.

Derivatives and Fair Value Me_5

Derivatives and Fair Value Measurements - Location and Fair Value Amount of Derivative Instruments (Parenthetical) (Detail) $ in Millions	Dec. 31, 2019USD ($)
Derivative Liability Net of Cash Collateral [Member]
Derivatives Fair Value [Line Items]
Derivative liability balance	$ 6.9
Derivatives Not Designated as Hedging Instruments under ASC 815 [Member] | Metal Commodity Contracts [Member] | Other Accrued Liabilities [Member] | Derivative Counterparty [Member]
Derivatives Fair Value [Line Items]
Derivative liabilities, offsetting cash collateral	2.7
Derivative liability balance	$ 6.7

Derivatives and Fair Value Me_6

Derivatives and Fair Value Measurements - Volume of Company 's Activity in Derivative Instruments (Detail) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2020USD ($)T	Dec. 31, 2019USD ($)Tbbl
Hot Roll Coil Swap Contracts [Member]
Derivatives Fair Value [Line Items]
Derivative Instruments, Notional Value	28,502	47,155
Aluminum Swap Contracts [Member]
Derivatives Fair Value [Line Items]
Derivative Instruments, Notional Value	14,478	23,949
Nickel Swap Contracts [Member]
Derivatives Fair Value [Line Items]
Derivative Instruments, Notional Value	67	3,164
Iron Ore Swap Contracts [Member]
Derivatives Fair Value [Line Items]
Derivative Instruments, Notional Value		420,000
Crude Oil Swap Contracts [Member]
Derivatives Fair Value [Line Items]
Derivative Instruments, Notional Value | bbl		38,000
Foreign Exchange Contracts [Member]
Derivatives Fair Value [Line Items]
Derivative notional amount | $	$ 1.6	$ 2
Interest Rate Swap [Member]
Derivatives Fair Value [Line Items]
Derivative notional amount | $	$ 160	$ 310

Derivatives and Fair Value Me_7

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, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Derivative Instruments Gain Loss [Line Items]
Amount of Gain/(Loss) Recognized in Income on Derivatives			$ 5	$ (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	$ 1.9	$ (4.9)	1.3	(12.3)
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	2	$ (4.9)	$ 1.3	(12.9)
Derivatives Not Designated as Hedging Instruments under ASC 815 [Member] | Crude oil 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				0.7
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 and Fair Value Me_8

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, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Derivatives designated as hedging instruments under ASC 815 [Member] | Interest Rate Swap [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	$ (0.5)	$ 0.3	$ (1.1)	$ 0.9

Derivatives and Fair Value Me_9

Derivatives and Fair Value Measurements - Assets and Liabilities Measured and Recorded at Fair Value (Detail) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Asset Derivatives, Fair Value	$ 1.5	$ 5.1
Liability Derivatives, Fair Value	5.4	9.6	[1]
Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Asset Derivatives, Fair Value		5.1
Liability Derivatives, Fair Value	5.4	9.6	[2]
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]
Asset Derivatives, Fair Value	1.5	5
Liability Derivatives, Fair Value	0.8	9.4	[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]
Asset Derivatives, Fair Value		0.1
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Derivatives designated as hedging instruments under ASC 815 [Member] | Interest Rate Swap [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Liability Derivatives, Fair Value	$ 4.6	$ 0.2
[1]	The offsetting cash collateral balance of $2.7 million held by the derivative counterparty brought the net metal commodity contract liability to $6.7 million and the net total derivative liability balance to $6.9 million as of December 31, 2019.
[2]	The offsetting cash collateral balance of $2.7 million held by the derivative counterparty brought the net metal commodity contract liability to $6.7 million and the net total derivative liability balance to $6.9 million.

Derivatives and Fair Value M_10

Derivatives and Fair Value Measurements - Assets and Liabilities Measured and Recorded at Fair Value (Parenthetical) (Detail) - Fair Value, Measurements, Recurring [Member] - Level 2 [Member] - Derivative Counterparty [Member] $ in Millions	Dec. 31, 2019USD ($)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative liability balance	$ 6.9
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]
Derivative liabilities, offsetting cash collateral	2.7
Derivative liability balance	$ 6.7

Derivatives and Fair Value M_11

Derivatives and Fair Value Measurements - Carrying and Estimated Fair Values Financial Instruments (Detail) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Carrying Amount [Member]
Derivatives Fair Value [Line Items]
Cash and cash equivalents	$ 121.8	$ 11
Restricted cash	1.1	48.8
Receivables less provisions	396.5	425.1
Accounts payable	351.1	311.5
Long-term debt, including current portion	814	981.8
Fair Value [Member]
Derivatives Fair Value [Line Items]
Cash and cash equivalents	121.8	11
Restricted cash	1.1	48.8
Receivables less provisions	396.5	425.1
Accounts payable	351.1	311.5
Long-term debt, including current portion	$ 840.8	$ 1,014.4

Stockholders' Equity (Deficit_3

Stockholders' Equity (Deficit), Accumulated Other Comprehensive Income (Loss) and Noncontrolling Interest - Change in Stockholders' Equity (Deficit) (Detail) - USD ($) $ in Millions	3 Months Ended						9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019
Beginning Balance	$ 163.7	$ 185.4	$ 178.6	$ 131.1	$ 112.8	$ 75.9	$ 178.6	$ 75.9
Beginning Balance, shares			37,996,261				37,996,261
Beginning Balance Treasury Stock, shares			212,500				212,500
Net income	(39.7)	(25.5)	$ 16.4	10.2	16.5	29.6	$ (48.8)	56.3
Foreign currency translation	1.2	1.6	(8.5)	(1.4)	0.8	3
Changes in defined benefit pension and other post-retirement benefit plans, net of tax of $0.6, $0.7, $2.0 and $0.3	5.8	2	1.8	0.8	0.8	0.9
Stock-based compensation expense	0.4	0.4	0.6	0.8	0.8	0.8
Dividends paid to noncontrolling interest		0.2					0.2
Cash flow hedge - interest rate swap, net of tax of $1.2, $0.1, $0.3 and $0.2	0.3		(3.5)	(0.4)	(0.6)	(0.4)
Ending Balance	$ 131.7	163.7	185.4	141.1	131.1	112.8	$ 131.7	141.1
Ending Balance, shares	38,329,897						38,329,897
Ending Balance Treasury Stock, shares	212,500						212,500
ASU 2016-02 [Member]
Adoption of accounting principal						3
Common Stock [Member]
Beginning Balance	$ 0.4	$ 0.4	$ 0.4	$ 0.4	$ 0.4	$ 0.4	$ 0.4	$ 0.4
Beginning Balance, shares	38,330,000	37,996,000	37,996,000	37,996,000	37,666,000	37,656,000	37,996,000	37,656,000
Stock-based compensation expense, shares		334,000			330,000	10,000
Ending Balance	$ 0.4	$ 0.4	$ 0.4	$ 0.4	$ 0.4	$ 0.4	$ 0.4	$ 0.4
Ending Balance, shares	38,330,000	38,330,000	37,996,000	37,996,000	37,996,000	37,666,000	38,330,000	37,996,000
Treasury Stock [Member]
Beginning Balance	$ (6.6)	$ (6.6)	$ (6.6)	$ (6.6)	$ (6.6)	$ (6.6)	$ (6.6)	$ (6.6)
Beginning Balance Treasury Stock, shares	213,000	213,000	213,000	213,000	213,000	213,000	213,000	213,000
Ending Balance	$ (6.6)	$ (6.6)	$ (6.6)	$ (6.6)	$ (6.6)	$ (6.6)	$ (6.6)	$ (6.6)
Ending Balance Treasury Stock, shares	213,000	213,000	213,000	213,000	213,000	213,000	213,000	213,000
Capital in Excess of Par Value [Member]
Beginning Balance	$ 382.2	$ 381.8	$ 381.2	$ 379.7	$ 381.8	$ 381	$ 381.2	$ 381
Stock-based compensation expense	0.4	0.4	0.6	0.8	0.8	0.8
Purchase of subsidiary shares from noncontrolling interest					(2.9)
Ending Balance	382.6	382.2	381.8	380.5	379.7	381.8	382.6	380.5
Retained Earnings (Accumulated Deficit) [Member]
Beginning Balance	90.4	116	99.6	63.1	46.7	14.2	99.6	14.2
Net income	(39.9)	(25.6)	16.4	10.1	16.4	29.5
Ending Balance	50.5	90.4	116	73.2	63.1	46.7	50.5	73.2
Retained Earnings (Accumulated Deficit) [Member] | ASU 2016-02 [Member]
Adoption of accounting principal						3
Foreign Currency Translation [Member]
Beginning Balance	(55.4)	(57.1)	(48.6)	(49.1)	(49.9)	(52.8)	(48.6)	(52.8)
Foreign currency translation	1.2	1.7	(8.5)	(1.3)	0.8	2.9
Ending Balance	(54.2)	(55.4)	(57.1)	(50.4)	(49.1)	(49.9)	(54.2)	(50.4)
Benefit Plan Liabilities [Member]
Beginning Balance	(249.3)	(251.3)	(253.1)	(262.3)	(263.1)	(264)	(253.1)	(264)
Changes in defined benefit pension and other post-retirement benefit plans, net of tax of $0.6, $0.7, $2.0 and $0.3	5.8	2	1.8	0.8	0.8	0.9
Ending Balance	(243.5)	(249.3)	(251.3)	(261.5)	(262.3)	(263.1)	(243.5)	(261.5)
Cash Flow Hedge - Interest Rate Swap [Member]
Beginning Balance	(3.8)	(3.8)	(0.3)		0.6	1	(0.3)	1
Cash flow hedge - interest rate swap, net of tax of $1.2, $0.1, $0.3 and $0.2	0.3		(3.5)	(0.4)	(0.6)	(0.4)
Ending Balance	(3.5)	(3.8)	(3.8)	(0.4)		0.6	(3.5)	(0.4)
Non-controlling Interest [Member]
Beginning Balance	5.8	6	6	5.9	2.9	2.7	6	2.7
Net income	0.2	0.1		0.1	0.1	0.1
Foreign currency translation		(0.1)		(0.1)		0.1
Dividends paid to noncontrolling interest		0.2
Purchase of subsidiary shares from noncontrolling interest					2.9
Ending Balance	$ 6	$ 5.8	$ 6	$ 5.9	$ 5.9	$ 2.9	$ 6	$ 5.9

Stockholders' Equity (Deficit_4

Stockholders' Equity (Deficit), Accumulated Other Comprehensive Income (Loss) and Noncontrolling Interest - Change in Stockholders' Equity (Deficit) (Parenthetical) (Detail) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Changes in defined benefit pension and other post-retirement benefit plans, tax	$ 2	$ 0.7	$ 0.6	$ 0.3	$ 0.3	$ 0.3
Changes in interest rate swap, tax	$ 0.1		$ 1.2	$ 0.2	$ 0.3	0.1
ASU 2016-02 [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Changes due to adoption of ASC						$ 1.1

Stockholders' Equity (Deficit_5

Stockholders' Equity (Deficit), Accumulated Other Comprehensive Income (Loss) and Noncontrolling Interest - Changes in Accumulated Other Comprehensive Income/(Loss) Net of Tax by Component (Detail) $ in Millions	9 Months Ended
	Sep. 30, 2020USD ($)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss) net of tax, beginning balance	$ (302)
Accumulated other comprehensive income (loss) net of tax, ending balance	(301.2)
Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss) net of tax, beginning balance	(48.6)
Other comprehensive income (loss) before reclassifications	(5.6)
Net current-period other comprehensive income (loss)	(5.6)
Accumulated other comprehensive income (loss) net of tax, ending balance	(54.2)
Benefit Plan Liabilities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss) net of tax, beginning balance	(253.1)
Other comprehensive income (loss) before reclassifications	(35.1)
Amounts reclassified from accumulated other comprehensive income into net income	44.7
Net current-period other comprehensive income (loss)	9.6
Accumulated other comprehensive income (loss) net of tax, ending balance	(243.5)
Cash Flow Hedge - Interest Rate Swap [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss) net of tax, beginning balance	(0.3)
Other comprehensive income (loss) before reclassifications	(4)
Amounts reclassified from accumulated other comprehensive income into net income	0.8
Net current-period other comprehensive income (loss)	(3.2)
Accumulated other comprehensive income (loss) net of tax, ending balance	$ (3.5)

Stockholders' Equity (Deficit_6

Stockholders' Equity (Deficit), Accumulated Other Comprehensive Income (Loss) and Noncontrolling Interest - Reclassifications Out of Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Amortization of Defined Benefit Pension and Other Post-retirement Benefit Plan Items, Actuarial Loss [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Reclassifications out of AOCI	$ 2.5	$ 1.8	$ 7.5	$ 5.4
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	(0.5)	(0.7)	(1.5)	(2.2)
Amortization of Defined Benefit Pension and Other Post-retirement Benefit Plan Items, Pension Settlement [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Reclassifications out of AOCI	53.2		54.3	0.2
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	55.2	1.1	60.3	3.4
Tax benefit	(14.3)	(0.3)	(15.6)	(0.9)
Net of tax	40.9	0.8	44.7	2.5
Cash Flow Hedge - Interest Rate Swap [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Net of tax			(0.8)
Realized swap interest	0.5	(0.4)	1.1	(1)
Tax benefit	(0.1)	0.2	(0.3)	0.3
Net of tax	$ 0.4	$ (0.2)	$ 0.8	(0.7)
Accumulated Foreign Currency Adjustment [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Reclassifications out of AOCI				0.2
Net of tax				$ 0.2

Revenue Recognition - Additiona

Revenue Recognition - Additional Information (Detail) $ in Millions	9 Months Ended
	Sep. 30, 2020USD ($)Segment	Dec. 31, 2019USD ($)
Revenue Initial Application Period Cumulative Effect Transition [Line Items]
Number of operating segments	1
Number of reportable segments	1
Payment terms on invoiced amounts	30 days
Accounts receivables from contracts with customers | $	$ 398.4	$ 428.6
Minimum [Member]
Revenue Initial Application Period Cumulative Effect Transition [Line Items]
Percentage of revenue from product sales	75.00%

Revenue Recognition - Percentag

Revenue Recognition - Percentage of Sales by Major Product Lines (Detail)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Product Line
Percentage of sales by major product lines	100.00%	100.00%	100.00%	100.00%
Carbon Steel Flat [Member]
Product Line
Percentage of sales by major product lines	28.00%	26.00%	26.00%	25.00%
Carbon Steel Plate [Member]
Product Line
Percentage of sales by major product lines	8.00%	11.00%	9.00%	11.00%
Carbon Steel Long [Member]
Product Line
Percentage of sales by major product lines	13.00%	15.00%	15.00%	16.00%
Stainless Steel Flat [Member]
Product Line
Percentage of sales by major product lines	16.00%	15.00%	16.00%	15.00%
Stainless Steel Plate [Member]
Product Line
Percentage of sales by major product lines	4.00%	4.00%	5.00%	4.00%
Stainless Steel Long [Member]
Product Line
Percentage of sales by major product lines	5.00%	4.00%	5.00%	4.00%
Aluminum Flat [Member]
Product Line
Percentage of sales by major product lines	16.00%	16.00%	14.00%	16.00%
Aluminum Plate [Member]
Product Line
Percentage of sales by major product lines	3.00%	2.00%	3.00%	2.00%
Aluminum Long [Member]
Product Line
Percentage of sales by major product lines	5.00%	5.00%	5.00%	5.00%
Other [Member]
Product Line
Percentage of sales by major product lines	2.00%	2.00%	2.00%	2.00%

Revenue Recognition - Summary o

Revenue Recognition - Summary of Consolidated Financial Information of our Operations by Geographic Location (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation Of Revenue [Line Items]
Net sales	$ 831.5	$ 1,104.4	$ 2,613.6	$ 3,540.1
United States [Member]
Disaggregation Of Revenue [Line Items]
Net sales	737.9	1,000.8	2,337.7	3,216.6
Foreign Countries [Member]
Disaggregation Of Revenue [Line Items]
Net sales	$ 93.6	$ 103.6	$ 275.9	$ 323.5

Revenue Recognition - Summary_2

Revenue Recognition - Summary of Revenues by Type of Item Sold (Detail)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation Of Revenue [Line Items]
Total	100.00%	100.00%	100.00%	100.00%
Revenue Recognized Point In Time
Disaggregation Of Revenue [Line Items]
Revenue on products with an alternative use	89.00%	88.00%	88.00%	88.00%
Revenue Recognized Over Time
Disaggregation Of Revenue [Line Items]
Revenue on products with no alternative use	11.00%	12.00%	12.00%	12.00%

Revenue Recognition - Summary_3

Revenue Recognition - Summary of Significant Changes in Contract Assets and Contract Liabilities Balances (Detail) $ in Millions	9 Months Ended
	Sep. 30, 2020USD ($)
Changes in the Contract Assets
Beginning Balance	$ 13.5
Net change in contract assets for products with no alternative use during the period	(1.4)
Changes to reserves	(0.5)
Ending Balance	11.6
Changes in the Contract Liabilities
Beginning Balance	10.5
Contract liability satisfied during the period	(9.8)
Contract liability incurred during the period	8.3
Changes to reserves	(2.1)
Ending Balance	$ 6.9

Revenue Recognition - Additio_2

Revenue Recognition - Additional Information 1 (Detail)	Sep. 30, 2020
Maximum [Member] | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2020-10-01
Revenue Initial Application Period Cumulative Effect Transition [Line Items]
Performance obligations on contracts have expected duration	1 year

Provision for Credit Losses - S

Provision for Credit Losses - Schedule of Reconciliation of Provision for Credit Losses (Detail) $ in Millions	9 Months Ended
	Sep. 30, 2020USD ($)
Credit Loss [Abstract]
Balance at January 1, 2020	$ 3.5
Current period provision	(0.3)
Write-offs charged against allowance	(1.4)
Recoveries against allowance	0.2
Effect of foreign exchange rates	(0.1)
Balance at September 30, 2020	$ 1.9

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Income Tax [Line Items]
Provision for income taxes	$ (19.3)	$ 6.3	$ (20.9)	$ 24.8
Alternative minimum tax refunds received	12
Valuation allowance	13.7		13.7		$ 13.7
Reserves released for unrecognized tax benefits			(1.9)
Unrecognized tax benefits balance	2.5		2.5		$ 4.4
GILTI [Member]
Income Tax [Line Items]
Provision for income taxes	$ 2	$ 0.9	$ 0.5	$ 1.9

Earnings (Loss) Per Share - Add

Earnings (Loss) Per Share - Additional Information (Detail) - shares	3 Months Ended	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2020
Earnings Per Share [Abstract]
Weighted average number of shares excluded from computation of earnings per share	250,356	259,244

Earnings (Loss) Per Share - Cal

Earnings (Loss) 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, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Numerator:
Net income (loss) attributable to Ryerson Holding Corporation	$ (39.9)	$ 10.1	$ (49.1)	$ 56
Denominator:
Weighted average shares outstanding	38,117,397	37,783,761	37,994,139	37,668,629
Dilutive effect of stock-based awards		182,090		240,814
Weighted average shares outstanding adjusted for dilutive securities	38,117,397	37,965,851	37,994,139	37,909,443
Earnings (loss) per share
Basic	$ (1.05)	$ 0.27	$ (1.29)	$ 1.49
Diluted	$ (1.05)	$ 0.27	$ (1.29)	$ 1.48