Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 8,368	$ 4,327	$ 7,989
Other comprehensive income (loss), net of tax:
Net unrealized investment gains (losses)	1,090	(2,317)	(556)
Change in discount rate on insurance reserves	(67)	870	255
Foreign currency translation adjustments	0	0	(7)
Net cash flow hedges	5	17	(26)
Pension and other postretirement benefits	(61)	(168)	20
Other comprehensive income (loss)	967	(1,598)	(314)
Comprehensive income	9,335	2,729	7,675
Comprehensive (income) loss attributable to noncontrolling interests	(24)	(16)	12
Comprehensive income attributable to CVS Health	$ 9,311	$ 2,713	$ 7,687