Condensed Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) shares in Millions, $ in Millions		Total	Total CVS Health Shareholders’ Equity	Common Shares	Treasury Stock		Common Stock and Capital Surplus	[2]	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interests
Shares outstanding, balance at beginning of period (in shares) at Dec. 31, 2020				1,733	(423)	[1]
Balance at beginning of period at Dec. 31, 2020		$ 69,701	$ 69,389		$ (28,178)	[1]	$ 46,513		$ 49,640	$ 1,414	$ 312
Shareholders' Equity [Roll Forward]
Net income		2,224	2,223						2,223		1
Other comprehensive loss		(392)	(392)							(392)
Stock option activity, stock awards and other (in shares)				2
Stock option activity, stock awards and other		214	214				214
ESPP issuances, net of purchase of treasury shares (in shares)	[1]				1
ESPP issuances, net of purchase of treasury shares		76	76		$ 76	[1]
Common stock dividends		(660)	(660)						(660)
Other increases (decreases) in noncontrolling interests		1									1
Shares outstanding, balance at end of period (in shares) at Mar. 31, 2021				1,735	(422)	[1]
Balance at end of period at Mar. 31, 2021		71,164	70,850		$ (28,102)	[1]	46,727		51,203	1,022	314
Shares outstanding, balance at beginning of period (in shares) at Dec. 31, 2021				1,744	(422)	[1]
Balance at beginning of period at Dec. 31, 2021		75,381	75,075		$ (28,173)	[1]	47,377		54,906	965	306
Shareholders' Equity [Roll Forward]
Net income		2,313	2,312						2,312		1
Other comprehensive loss		(1,155)	(1,155)							(1,155)
Stock option activity, stock awards and other (in shares)				3
Stock option activity, stock awards and other		300	300				300
Purchases of treasury shares, net of ESPP issuances (in shares)	[1]				(19)
Purchase of treasury shares, net of ESPP issuances		(1,972)	(1,972)		$ (1,972)	[1]
Common stock dividends		(730)	(730)						(730)
Other increases (decreases) in noncontrolling interests		3									3
Shares outstanding, balance at end of period (in shares) at Mar. 31, 2022				1,747	(441)	[1]
Balance at end of period at Mar. 31, 2022		$ 74,140	$ 73,830		$ (30,145)	[1]	$ 47,677		$ 56,488	$ (190)	$ 310

[1] Treasury shares include 1 million shares held in trust and treasury stock includes $29 million related to shares held in trust as of March 31, 2022 and 2021 and December 31, 2021 and 2020.

[2] Common stock and capital surplus includes the par value of common stock of $17 million as of March 31, 2022 and 2021 and December 31, 2021 and 2020.