Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Condensed Consolidated Statements of Comprehensive Income
Net income (loss)	$ 1,390	$ 1,285	$ (175)	$ 3,336
Other comprehensive income (loss):
Foreign currency translation adjustments, net of tax	(8)	8	(34)	6
Net cash flow hedges, net of tax	(4)		335	1
Pension and other postretirement benefits, net of tax		151		151
Total other comprehensive income (loss)	(12)	159	301	158
Comprehensive income	1,378	1,444	126	3,494
Comprehensive income attributable to noncontrolling interest				(1)
Comprehensive income attributable to CVS Health	$ 1,378	$ 1,444	$ 126	$ 3,493