Debt instrument repurchase amount, authorized.

No definition available.

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Namespace Prefix:	ryi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Principal amount debt can be redeemed.

+ References

No definition available.

+ Details

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- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770

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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=123599511&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

Date the declared dividend will be paid, in YYYY-MM-DD format.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=123431023&loc=d3e4304-108586

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Period Type:	duration

- Definition

Date the dividend to be paid was declared, in YYYY-MM-DD format.

+ References

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Period Type:	duration

- Definition

Date the holder must own the stock to be entitled to the dividend, in YYYY-MM-DD format.

+ 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
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-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
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-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3291-108585

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Balance Type:	credit
Period Type:	duration

- 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
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-Section 40
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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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Balance Type:	na
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- Definition

Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.8)
-URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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Subsequent Events - Additional Information (Detail) - USD ($)		1 Months Ended	3 Months Ended
	May 04, 2022	Apr. 30, 2022	Mar. 31, 2022
2028 Notes [Member]
Subsequent Event [Line Items]
Principal amount of debt instrument repurchased			$ 63,100,000
Cash outflow to retire debt			68,400,000
Debt issuance cost written off			1,000,000.0
Principal Amount Debt Can Be Redeemed			$ 50,000,000
Redemption price as a percentage of principal amount			103.00%
Subsequent Event [Member]
Subsequent Event [Line Items]
Quarterly Cash Dividends Per Share Declared	$ 0.125
Subsequent Event [Member] \| Common Stock [Member]
Subsequent Event [Line Items]
Dividends Payable, Date declared	May 04, 2022
Dividend Payable, Date to be paid	Jun. 16, 2022
Dividends Payable, Date of Record	Jun. 02, 2022
Subsequent Event [Member] \| Other Income and (Expense), Net [Member]
Subsequent Event [Line Items]
Gain (loss) on retirement of debt		$ (1,300,000)
Subsequent Event [Member] \| Interest Expense [Member]
Subsequent Event [Line Items]
Debt issuance cost written off		200,000
Subsequent Event [Member] \| 2028 Notes [Member]
Subsequent Event [Line Items]
Principal amount of debt instrument repurchased		15,200,000
Cash outflow to retire debt		$ 16,500,000
Subsequent Event [Member] \| 2028 Notes [Member] \| Bond Repurchase Program [Member] \| Maximum [Member]
Subsequent Event [Line Items]
Debt instrument repurchase amount, authorized	$ 172,000,000.0