NET LOSS PER SHARE - Schedule of Net Loss Per share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Earnings Per Share [Abstract]
Loss from continuing operations, net noncontrolling interests and accrued preferred stock dividends	$ (112,236)	$ (187,057)
Loss from discontinued operations	(74,669)	(17,115)
Net loss attributable to Bright Health Group, Inc. common shareholders	$ (186,905)	$ (204,172)
Weighted-average number of shares outstanding used to compute net loss per share attributable to common stockholders, basic (in shares)	631,534	628,765
Weighted-average number of shares outstanding used to compute net loss per share attributable to common stockholders, diluted (in shares)	631,534	628,765
Continuing operations, basic (in dollars per share)	$ (0.18)	$ (0.30)
Continuing operations, diluted (in dollars per share)	(0.18)	(0.30)
Discontinued operations, basic (in dollars per share)	(0.12)	(0.02)
Discontinued operations, diluted (in dollars per share)	(0.12)	(0.02)
Net loss per share attributable to common stockholders, basic (in dollars per share)	(0.30)	(0.32)
Net loss per share attributable to common stockholders, diluted (in dollars per share)	$ (0.30)	$ (0.32)