Consolidated Statements of Mezzanine and Members’ Equity - USD ($) $ in Thousands	Total	Capital Unit, Class A	Capital Unit, Class A-1	Capital Unit, Class B	Common Class A	Class B Common Stock	Common Stock Common Class A	Common Stock Class B Common Stock	Common Units Capital Unit, Class A	Common Units Capital Unit, Class A-1	Common Units Capital Unit, Class B	Common Units Capital Unit, Class B-1	Additional Paid in Capital	AOCI	Noncontrolling Interest	Retained Earnings (Deficit)
Beginning balance (in units) at Dec. 31, 2020									19,495,000	1,843,000	3,218,000
Beginning balance at Dec. 31, 2020	$ 59,629								$ 7,725	$ 28,500	$ 60					$ 23,344
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss attributable to Legacy AON Stockholders prior to the reverse recapitalization	(105)															(105)
Equity based compensation (in shares)											1,485,000
Equity based compensation	20										$ 20
Other comprehensive income (loss)	0
Ending balance (in units) at Dec. 31, 2021									19,495,000	1,843,000	4,703,000
Ending balance at Dec. 31, 2021	59,544								$ 7,725	$ 28,500	$ 80					23,239
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss attributable to Legacy AON Stockholders prior to the reverse recapitalization	2,589															2,589
Other comprehensive income (loss)	(117)													$ (117)
Ending balance (in units) at Dec. 31, 2022		19,495,376	1,842,520	4,703,628					19,495,000	1,843,000	4,703,000
Ending balance at Dec. 31, 2022	$ 62,016								$ 7,725	$ 28,500	$ 80			(117)		25,828
Redeemable Preferred Stock
Issuance of Class C Units, net of offering costs (in shares)	6,500,000
Issuance of Class C Units, net of offering costs	$ 62,897
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Class A and A-1 preferred returns	(8,174)															(8,174)
Issuance of additional Class A-1 Units pursuant to the Anti-Dilution Feature (in shares)										1,157,000
Issuance of additional Class A-1 Units pursuant to the Anti-Dilution Feature	9,725									$ 9,725
Tax distributions	(1,306)															(1,306)
Capital contribution from noncontrolling interest member	134														$ 134
Accumulated Other Comprehensive Income	179													179
Net loss attributable to Legacy AON Stockholders prior to the reverse recapitalization	(27,081)														(26)	(27,055)
Equity based compensation (in shares)											911,000	1,047,000
Equity based compensation	$ 4,874										$ 10	$ 4,864
Ending Balance (in shares) at Dec. 31, 2023	6,652,000
Ending Balance at Dec. 31, 2023	$ 64,986
Increase (Decrease) In Noncontrolling Interest [Roll Forward]
Net loss after the reverse recapitalization	(30,800)
Ending Balance at Dec. 31, 2023	167,025
Beginning balance (in units) at Dec. 31, 2022		19,495,376	1,842,520	4,703,628					19,495,000	1,843,000	4,703,000
Beginning balance at Dec. 31, 2022	62,016								$ 7,725	$ 28,500	$ 80			(117)		25,828
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other comprehensive income (loss)	510
Fair value adjustment to redeemable noncontrolling interest													$ (17,600)			(143,100)
Ending balance (in shares) at Dec. 31, 2023					9,517,816	25,109,551	6,678,000	25,110,000		0
Ending balance (in units) at Dec. 31, 2023		0	0	0							0
Ending balance at Dec. 31, 2023	$ (161,298)						$ 1	$ 3					0	81	429	(161,812)
Redeemable Preferred Stock
Reverse Recapitalization, net (in shares)	152,000
Reverse Recapitalization, net	$ 2,089
Ending Balance (in shares) at Dec. 31, 2023	6,652,000
Ending Balance at Dec. 31, 2023	$ 64,986
Increase (Decrease) In Noncontrolling Interest [Roll Forward]
Reverse Recapitalization, net	36,872
Other comprehensive income	268
Net loss after the reverse recapitalization	(30,848)
Fair value adjustment to redeemable noncontrolling interest	160,733
Ending Balance at Dec. 31, 2023	167,025
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Equity based compensation	2												0			2
743(b) tax adjustment	(254)												0			(254)
Reverse Recapitalization, net (in shares)							6,693,000	25,110,000	(19,495,000)	(3,000,000)	(5,614,000)	(1,047,000)
Reverse Recapitalization, net	(35,430)						$ 1	$ 3	$ (7,725)	$ (38,225)	$ (90)	$ (4,864)	17,601	(42)		(2,089)
Other comprehensive income (loss)	61													61
Repurchases of Class A Common Stock (in shares)							(15,000)
Repurchases of Class A Common Stock	(89)												0			(89)
Net loss after the reverse recapitalization	(5,222)														321	(5,543)
Fair value adjustment to redeemable noncontrolling interest	(160,733)												(17,601)			(143,132)
Ending balance (in shares) at Dec. 31, 2023					9,517,816	25,109,551	6,678,000	25,110,000		0
Ending balance (in units) at Dec. 31, 2023		0	0	0							0
Ending balance at Dec. 31, 2023	$ (161,298)						$ 1	$ 3					$ 0	$ 81	$ 429	$ (161,812)