NET LOSS PER SHARE - Schedule of Net Loss Per share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Earnings Per Share [Abstract]
Loss from continuing operations, net noncontrolling interests and accrued preferred stock dividends		$ (68,070)	$ (107,559)	$ (139,432)	$ (252,680)
Loss from discontinued operations		(56,935)	(176,568)	(172,478)	(235,619)
Net loss attributable to Bright Health Group, Inc. common shareholders		$ (125,005)	$ (284,127)	$ (311,910)	$ (488,299)
Weighted-average number of shares outstanding used to compute net loss per share attributable to common stockholders, basic (in shares)	[1]	7,962	7,865	7,928	7,862
Weighted-average number of shares outstanding used to compute net loss per share attributable to common stockholders, diluted (in shares)	[1]	7,962	7,865	7,928	7,862
Basic and diluted loss per share attributable to Bright Health Group, Inc. common shareholders
Continuing operations, basic (in dollars per share)		$ (8.55)	$ (13.68)	$ (17.59)	$ (32.14)
Continuing operations, diluted (in dollars per share)		(8.55)	(13.68)	(17.59)	(32.14)
Discontinued operations, basic (in dollars per share)		(7.15)	(22.45)	(21.76)	(29.97)
Discontinued operations, diluted (in dollars per share)		(7.15)	(22.45)	(21.76)	(29.97)
Net loss per share attributable to common stockholders, basic (in dollars per share)		(15.70)	(36.13)	(39.35)	(62.11)
Net loss per share attributable to common stockholders, diluted (in dollars per share)		$ (15.70)	$ (36.13)	$ (39.35)	$ (62.11)

[1] *Shares have been retroactively adjusted to reflect the decreased number of shares resulting from a 1 for 80 reverse stock split