Common Stock, Capital Shares Reserved For Future Issuance, Value

No definition available.

Name:	obdc_CommonStockCapitalSharesReservedForFutureIssuanceValue
Namespace Prefix:	obdc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Sale of Stock, Maximum Offering Amount

+ References

No definition available.

+ Details

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Namespace Prefix:	obdc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount authorized for purchase of share under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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+ Details

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

- Definition

Number of shares of equity interest issued or issuable by acquirer as part of consideration transferred in business combination.

+ References

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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Face amount or stated value per share of common stock.

+ References

+ Details

Name:	us-gaap_CommonStockParOrStatedValuePerShare
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

+ References

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+ Details

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Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- 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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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The cash outflow to reacquire common stock during the period.

+ References

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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Period share may be purchased under authorized share repurchase plan, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, repurchase of stock and unit of ownership.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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Period Type:	duration

- Details

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- Details

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- Details

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Balance Type:
Period Type:

- Details

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Period Type:

Net Assets - Narrative (Details) - USD ($)			3 Months Ended		10 Months Ended
Net Assets - Narrative (Details) - USD ($)	Feb. 17, 2026	Jan. 13, 2025	Mar. 31, 2026	Mar. 31, 2025	Feb. 17, 2026	Dec. 31, 2025	Nov. 04, 2025
Equity, Class of Treasury Stock [Line Items]
Common stock, shares authorized (in shares)			1,000,000,000			1,000,000,000
Common stock, par value (in usd per share)			$ 0.01			$ 0.01
Repurchases of common stock			$ 35,190,000	$ 0
Repurchase Program 2025
Equity, Class of Treasury Stock [Line Items]
Stock repurchase program, authorized amount							$ 200,000,000.0
Stock repurchased during period (in shares)				0	11,599,738
Repurchases of common stock					$ 148,200,000
2026 Stock Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Stock repurchase program, authorized amount	$ 300,000,000.0				$ 300,000,000.0
Repurchase program term	18 months
At The Market Offerings
Equity, Class of Treasury Stock [Line Items]
Maximum offering amount			750,000,000.0
Sale of stock, value of shares available for issuance			$ 746,900,000
Merger Agreement
Equity, Class of Treasury Stock [Line Items]
Common stock, par value (in usd per share)		$ 0.01
Aggregate of shares in company (in shares)		120,630,330