Price per share or per unit of warrants or rights outstanding.

No definition available.

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Period Type:	instant

- Definition

Amount of maximum borrowing capacity of related party promissory note.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Definition

The maximum amount which a potential loan could have repaid through issuance of warrants.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Definition

The contractual monthly amount to be paid for support services.

+ References

No definition available.

+ Details

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

- Definition

Represents the formation cost paid by the related party on behalf of the company.

+ References

No definition available.

+ Details

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Namespace Prefix:	osiun_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Portion of the carrying amount as of the balance sheet date of obligations due all related parties that is payable after one year or beyond the normal operating cycle if longer.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
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+ Details

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

- Definition

The amount for notes payable (written promise to pay), due to related parties.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
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- Definition

Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

+ References

+ Details

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

- 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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- Details

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RELATED PARTY TRANSACTIONS - Additional Information (Details) - USD ($)	3 Months Ended	9 Months Ended	11 Months Ended
	Sep. 30, 2021	Sep. 30, 2021	Sep. 30, 2021	May 18, 2021	Dec. 31, 2020	Dec. 05, 2020
Related Party Transaction [Line Items]
Price of warrant				$ 1.00
Administrative Services Agreement
Related Party Transaction [Line Items]
Expenses per month		$ 10,000
Expenses incurred and paid	$ 30,000	40,000
Promissory Note - Related Party
Related Party Transaction [Line Items]
Maximum borrowing capacity of related party promissory note						$ 300,000
Outstanding balance of related party note	0	0	$ 0		$ 0
Advances from Related Party
Related Party Transaction [Line Items]
Formation cost			105,161
Amount due to sponsor	0	0	0		2,069
Related Party Loans
Related Party Transaction [Line Items]
Loan conversion agreement warrant	$ 1,500,000	$ 1,500,000	$ 1,500,000
Price of warrant	$ 10.00	$ 10.00	$ 10.00
Working Capital Loans
Related Party Transaction [Line Items]
Outstanding balance of related party note	$ 0	$ 0	$ 0		$ 0