Dividend payment threshold of percentage of cumulative net income.

No definition available.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph e
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

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- Definition

Face (par) amount of the original debt instrument that was repurchased.

+ References

No definition available.

+ Details

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- Definition

The cash outflow for the extinguishment of long-term borrowing, with the highest claim on the assets of the entity in case of bankruptcy or liquidation, before its maturity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585

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- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 50
-Section 40
-Paragraph 4
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- Details

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- Details

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Long-Term Debt - 2022 Notes - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	May 24, 2016
Debt Instrument [Line Items]
Gain (loss) on retirement of debt	$ 0.8	$ (0.2)
2022 Notes [Member]
Debt Instrument [Line Items]
Debt Instrument Percentage			11.00%
Principal amount of debt instrument repurchased	54.6	11.6
Debt instruments senior notes retired	53.8	11.8
2022 Notes [Member] \| Other Income and (Expense), Net [Member]
Debt Instrument [Line Items]
Gain (loss) on retirement of debt	$ 0.8	$ (0.2)
2022 Notes [Member] \| Joseph T. Ryerson [Member]
Debt Instrument [Line Items]
Maximum percentage of dividend of cumulative net income	50.00%
2022 Notes [Member] \| Redeemable Prior to May 15, 2020 [Member]
Debt Instrument [Line Items]
Redemption price as a percentage of principal amount	105.50%
2022 Notes [Member] \| Redeemable in twelve months beginning May 15, 2020 [Member]
Debt Instrument [Line Items]
Redemption price as a percentage of principal amount	102.75%
2022 Notes [Member] \| Redeemable May 15, 2021 and thereafter [Member]
Debt Instrument [Line Items]
Redemption price as a percentage of principal amount	100.00%