Consolidated Statements of Operations - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Investment Income
Payment-in-kind interest	$ 6,745,453	$ 4,764,325	$ 2,277,990
Total investment income	173,125,161	149,032,181	93,359,262
Expenses:
Interest and borrowing expenses	79,873,478	66,672,590	32,923,711
Management fees	20,213,153	16,898,965	14,216,401
Income-based incentive fee	13,311,149	11,850,031	6,693,257
Professional fees	2,273,397	2,242,058	1,747,189
Administration and custodian fees	1,323,509	1,231,987	935,080
Insurance expenses	461,618	327,680	630,994
Collateral management fees	0	0	588,476
Directors' fees	244,625	279,500	200,000
Transfer agent fees	140,303	143,797	122,244
Capital gain incentive fees	0	0	(1,283,044)
Other expenses	1,680,331	1,462,061	1,219,394
Total expenses	119,521,563	101,108,669	57,993,702
Reimbursement payments to Adviser (See Note 3: Expense Support and Conditional Reimbursement Agreement)	0	0	259,263
Waived collateral management fees	0	0	(588,476)
Waived management fees	0	0	(283,566)
Net expenses	119,521,563	101,108,669	57,380,923
Net investment income before taxes	53,603,598	47,923,512	35,978,339
Income tax expense, including excise tax	359,038	523,389	1,181,087
Net investment income after tax	53,244,560	47,400,123	34,797,252
Net realized and change in unrealized gains (losses) on investment transactions:
Net realized gain (loss) on investments	1,850,609	(3,392,982)	6,174,089
Net change in unrealized Appreciation (Depreciation)	12,171,818	5,293,903	(30,414,638)
Net realized and change in unrealized gains (losses) on investment transactions	14,022,427	1,900,921	(24,240,549)
Net increase in net assets resulting from operations	67,266,987	49,301,044	10,556,703
Less: Net increase (decrease) in net assets resulting from operations related to Non-Controlling Interest in ABPCIC Equity Holdings, LLC	1,734	4,345	5,033
Net increase in net assets resulting from operations related to AB Private Credit Investors Corporation	$ 67,265,253	$ 49,296,699	$ 10,551,670
Net investment income per share (basic and diluted):
Net investment income per share (basic and diluted):	$ 0.9	$ 0.91	$ 0.81
Earnings per share, Basic	1.14	0.94	0.25
Earnings per share, Diluted	$ 1.14	$ 0.94	$ 0.25
Weighted average shares outstanding, Basic	59,099,675	52,318,840	42,791,547
Weighted average shares outstanding, Diluted	59,099,675	52,318,840	42,791,547
Non-controlled or non-affiliated investments [Member]
Investment Income
Interest income, net of amortization/accretion	$ 165,590,867	$ 143,183,230	$ 90,611,073
Payment-in-kind interest	6,745,453	4,764,325	2,277,990
Dividend income	788,841	1,084,626	251,076
Net realized and change in unrealized gains (losses) on investment transactions:
Net realized gain (loss) on investments	1,850,609	(3,700,122)	2,272,511
Net change in unrealized Appreciation (Depreciation)	11,791,070	5,458,755	(29,951,973)
Non Controlled Affiliated Investments [Member]
Net realized and change in unrealized gains (losses) on investment transactions:
Net change in unrealized Appreciation (Depreciation)	380,748	8,985	0
Controlled affiliated investments [Member]
Investment Income
Interest income, net of amortization/accretion	0	0	219,123
Net realized and change in unrealized gains (losses) on investment transactions:
Net realized gain (loss) on investments	0	307,140	3,901,578
Net change in unrealized Appreciation (Depreciation)	$ 0	$ (173,837)	$ (462,665)