Stock-Based Compensation - Schedule of Share Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Number of Stock Options
Outstanding at beginning of period (in shares)	854,076
Options granted (in shares)	219,672
Existing Angion Options outstanding (in shares)	351,656
Options exercised (in shares)	(16,349)
Forfeited (unvested) (in shares)	(103,131)
Outstanding at end of period (in shares)	1,305,924	854,076
Options vested and exercisable (in shares)	871,564
Weighted Average Exercise Price
Outstanding at beginning of period (in dollars per share)	$ 5.24
Options granted (in dollars per share)	9.68
Existing Angion Options outstanding (in dollars per share)	61.99
Options exercised (in dollars per share)	7.74
Forfeited (unvested) (in dollars per share)	5.83
Outstanding at end of period (in dollars per share)	21.27	$ 5.24
Options vested and exercisable (in dollars per share)	$ 41.91
Stock Option Activity, Additional Disclosures
Options outstanding, weighted average remaining contractual life (in years)	7 years 5 months 4 days	7 years 8 months 19 days
Options vested and exercisable, weighted average remaining contractual life (in years)	5 years 3 months
Options outstanding, total intrinsic value	$ 2,510,341
Options vested and exercisable, total intrinsic value	$ 860,479