Segments - Schedule of Segment Reporting, By Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Revenues [Abstract]
Total revenue	$ 6,324,339	$ 5,966,072	$ 5,409,483
Expenses:
Salaries and benefits	2,657,700	2,534,756	2,384,062
Supplies	1,082,908	1,033,122	993,405
Professional fees	1,192,645	1,097,119	980,270
Net income attributable to Ardent Health, Inc.	135,811	210,343	53,904
Reportable Segment
Revenues [Abstract]
Total revenue	6,324,339	5,966,072	5,409,483
Expenses:
Salaries and benefits	2,566,366	2,432,567	2,253,706
Contract labor	91,334	102,189	130,356
Supplies	1,082,908	1,033,122	993,405
Professional fees	455,348	399,303	350,799
Contract services	737,297	697,816	629,471
Other segment items	1,255,275	1,090,732	997,842
Net income attributable to Ardent Health, Inc.	$ 135,811	$ 210,343	$ 53,904