Interest rate hedge gain loss to be reclassified during next twelve months net.

No definition available.

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- Definition

Fixed interest rate related to the interest rate derivative.

+ References

No definition available.

+ Details

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- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5579245-113959

+ Details

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- Definition

The number of derivative instruments of a particular group held by the entity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5579245-113959

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5580258-113959

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Period Type:	instant

- Definition

Period the derivative contract is outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ 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.

+ Details

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- Definition

Fair value as of the balance sheet date of the embedded derivative or group of embedded derivatives classified as an asset.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5624163-113959

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Fair value as of the balance sheet date of interest rate derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as liabilities.

+ References

No definition available.

+ Details

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- Details

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Derivatives and Fair Value Measurements - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($) DerivativeInstrument	Dec. 31, 2020 USD ($)	Nov. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)
Derivatives Fair Value [Line Items]
Fair value of interest rate swaps	$ 1.4
2028 Notes Embedded Derivative Fair Value		$ 2.3
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
Second Interest Rate Swap [Member]
Derivatives Fair Value [Line Items]
Derivative notional amount	$ 160.0	$ 160.0
Derivative gain (loss) to be reclassified into interest income during next 12 months	$ 1.9
Ryerson Credit Facility [Member]
Derivatives Fair Value [Line Items]
Number of derivative instruments \| DerivativeInstrument	2
Ryerson Credit Facility [Member] \| Second Interest Rate Swaps [Member]
Derivatives Fair Value [Line Items]
Derivative notional amount				$ 60.0
Derivative fixed interest rate				1.729%
Ryerson Credit Facility [Member] \| Third Interest Rate Swaps [Member]
Derivatives Fair Value [Line Items]
Derivative notional amount			$ 100.0
Derivative fixed interest rate		1.539%	1.539%
Ryerson Credit Facility [Member] \| Second Interest Rate Swap [Member]
Derivatives Fair Value [Line Items]
Derivative fixed interest rate				1.729%