Related Party Transactions - Narrative (Details) - USD ($)		3 Months Ended						12 Months Ended	21 Months Ended
	Sep. 25, 2023	Mar. 31, 2024	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Dec. 31, 2023	Mar. 31, 2024
Related Party Transaction [Line Items]
Management fee expense		$ 3,767,000			$ 0
Management fee offset		3,767,000			0
Accrued performance participation allocation		12,412,000						$ 8,335,000	$ 12,412,000
Performance participation allocation		4,077,000			0
Accrued shareholder servicing fees and distribution fees		66,976,000						51,440,000	66,976,000
Less: Expenses reimbursed by Manager		$ (1,923,000)			(2,963,000)
Recoupment period (in years)		3 years
Due from Manager		$ 1,923,000						$ 16,549,000	$ 1,923,000
Other Receivable, after Allowance for Credit Loss, Related Party, Type [Extensible Enumeration]		Manager						Manager	Manager
Due to Manager		$ 3,539,000						$ 19,174,000	$ 3,539,000
Accounts Payable, Related Party, Type [Extensible Enumeration]		Manager						Manager	Manager
Class U, Class D, Class R-D And Class R-S Shares | Distribution Fees and Servicing Fees
Related Party Transaction [Line Items]
Accrued shareholder servicing fees and distribution fees		$ 66,976,000						$ 51,440,000	$ 66,976,000
Class H Shares | Total Return
Related Party Transaction [Line Items]
Related party transaction rate (as a percent)		12.50%
Class H Shares | Catch-Up Rate
Related Party Transaction [Line Items]
Related party transaction rate (as a percent)		100.00%
Class H Shares | Performance Participation Allocation, Excess Profits Percentage
Related Party Transaction [Line Items]
Related party transaction rate (as a percent)		100.00%
Class H Shares | Performance Participation Allocation, Remaining Excess Profits Percentage
Related Party Transaction [Line Items]
Related party transaction rate (as a percent)		12.50%
Class H Shares | Performance Participation Allocation, Percentage of Remaining Excess Profits
Related Party Transaction [Line Items]
Related party transaction rate (as a percent)		12.50%
Affiliated Entity
Related Party Transaction [Line Items]
Initial offering period (in months)	60 months
Minimum aggregate subscriptions required	$ 100,000,000
Minimum aggregate subscription, purchase period (in months)	12 months
Management fee expense		$ 3,767,000
Management fee offset		3,767,000
Net management fee		0
Management fee, credits		3,158,000						6,533,000	3,158,000
Less: Expenses reimbursed by Manager		$ (1,923,000)	$ (3,906,000)	$ (1,771,000)	$ (2,963,000)	$ (1,797,000)	$ (3,638,000)	$ (2,474,000)	$ (18,472,000)
Affiliated Entity | Management Fee Rate Attributable to Class D, I and S Shares
Related Party Transaction [Line Items]
Related party transaction rate (as a percent)	1.25%
Affiliated Entity | Management Fee Rate Attributable to Class U, R-D, R-S and R Shares Following Acceptance of Initial Subscription of Shares
Related Party Transaction [Line Items]
Related party transaction rate (as a percent)	1.00%
Affiliated Entity | Management Fee Percentage Attributable to Class U, R-D, R-S and R Shares Thereafter
Related Party Transaction [Line Items]
Related party transaction rate (as a percent)	1.25%
Manager | Expense Limitation and Reimbursement Agreement
Related Party Transaction [Line Items]
Agreement term (in years)		3 years
Manager | Expense Limitation and Reimbursement Agreement | Maximum
Related Party Transaction [Line Items]
Related party transaction rate (as a percent)		0.60%
KKR Capital Markets LLC | Affiliated Entity | Class S, Class R-S And Class U Shares | Distribution Fees and Servicing Fees
Related Party Transaction [Line Items]
Related party transaction rate (as a percent)		0.85%
KKR Capital Markets LLC | Affiliated Entity | Class S, Class R-S And Class U Shares | Distribution Fee
Related Party Transaction [Line Items]
Related party transaction rate (as a percent)		0.60%
KKR Capital Markets LLC | Affiliated Entity | Class S, Class R-S And Class U Shares | Servicing Fee
Related Party Transaction [Line Items]
Related party transaction rate (as a percent)		0.25%
KKR Capital Markets LLC | Affiliated Entity | Class D and R-D Shares | Servicing Fee
Related Party Transaction [Line Items]
Related party transaction rate (as a percent)		0.25%