Condensed Consolidated Statements of Comprehensive Loss - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss)	$ 30	$ (35)
Other comprehensive loss, net of income taxes:
Net change in fair value of available-for-sale debt securities, net of tax	(8)	(3)
Other comprehensive loss	(8)	(3)
Comprehensive income (loss)	22	(38)
Less: Comprehensive income attributable to noncontrolling interests	31	29
Comprehensive loss attributable to Community Health Systems, Inc. stockholders	$ (9)	$ (67)