Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 1,529	$ 1,390	$ 4,887	$ (175)
Other comprehensive income (loss), net of tax:
Net unrealized investment gains	136	0	721	0
Foreign currency translation adjustments	153	(8)	157	(34)
Net cash flow hedges	(23)	(4)	(30)	335
Other comprehensive income (loss)	266	(12)	848	301
Comprehensive income	1,795	1,378	5,735	126
Comprehensive loss attributable to noncontrolling interests	1	0	0	0
Comprehensive income attributable to CVS Health	$ 1,796	$ 1,378	$ 5,735	$ 126

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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