Debt Instrument, Credit Adjustment Spread

No definition available.

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Namespace Prefix:	gcred_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Line of Credit Facility, Accordion Feature, Increase Limit

+ References

No definition available.

+ Details

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

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

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Balance Type:	credit
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.

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

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Borrowings - SMBC Credit Facility - Narrative (Details) - USD ($)	Apr. 23, 2026	Apr. 22, 2026	Sep. 06, 2023	Jun. 30, 2026	Sep. 30, 2025
Debt Instrument [Line Items]
Debt				$ 5,170,226,000	$ 4,699,707,000
Revolving Credit Facility \| SMBC Credit Facility \| Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 3,127,500,000	$ 2,602,500,000		3,127,500,000
Total commitments under the facility	$ 4,500,000,000	$ 3,000,000,000
Debt instrument, basis spread on variable rate	1.75%	1.875%
Credit adjustment spread	0.10%
Commitment fee percentage on unused portion			0.35%
Debt				975,061,000	1,297,041,000
Revolving Credit Facility \| SMBC Credit Facility \| Line of Credit \| SONIA
Debt Instrument [Line Items]
Credit adjustment spread			0.0326%
Revolving Credit Facility \| SMBC Credit Facility \| Line of Credit \| CORRA, One Month Tenor Term Benchmark Loan
Debt Instrument [Line Items]
Credit adjustment spread			0.29547%
Revolving Credit Facility \| SMBC Credit Facility \| Line of Credit \| CORRA, Three Month Tenor Term Benchmark Loan
Debt Instrument [Line Items]
Credit adjustment spread			0.32138%
Revolving Credit Facility \| SMBC Credit Facility \| Line of Credit \| Bank Bill Swap Rate
Debt Instrument [Line Items]
Credit adjustment spread			0.20%
Revolving Credit Facility \| SMBC Credit Facility \| Line of Credit \| Minimum \| Base Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			0.75%
Revolving Credit Facility \| SMBC Credit Facility \| Line of Credit \| Maximum \| Base Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			1.75%
Secured Debt \| SMBC Credit Facility \| Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity				102,500,000
Letter of Credit \| SMBC Credit Facility \| Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity			$ 50,000,000
Debt				$ 0	$ 0