Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Changes in Accumulated Other Comprehensive Income (Loss) by Component
Balance at beginning of period	$ 75,382	$ 75,730
Other comprehensive income (loss)	(205)	179
Balance at end of period	77,637	77,110
Gains expected to be reclassified	16
AOCI Including Portion Attributable to Noncontrolling Interest
Changes in Accumulated Other Comprehensive Income (Loss) by Component
Balance at beginning of period	406	(120)
Balance at end of period	201	59
Net unrealized investment gains (losses):
Changes in Accumulated Other Comprehensive Income (Loss) by Component
Balance at beginning of period	206	(399)
Other comprehensive income (loss) before reclassifications, net of tax	(254)	187
Amounts reclassified from accumulated other comprehensive income (loss), net of tax	10	29
Other comprehensive income (loss)	(244)	216
Balance at end of period	(38)	(183)
Other comprehensive income (loss) before reclassifications, pretax	(328)	188
Amounts reclassified from accumulated other comprehensive income (loss), pretax	13	32
Change in discount rate on long-duration insurance reserves:
Changes in Accumulated Other Comprehensive Income (Loss) by Component
Balance at beginning of period	215	265
Other comprehensive income (loss) before reclassifications, net of tax	43	(33)
Other comprehensive income (loss)	43	(33)
Balance at end of period	258	232
Other comprehensive income (loss) before reclassifications, pretax	54	(41)
Foreign currency translation adjustments:
Changes in Accumulated Other Comprehensive Income (Loss) by Component
Balance at beginning of period	7	(4)
Other comprehensive income (loss)	0	0
Balance at end of period	7	(4)
Net cash flow hedges:
Changes in Accumulated Other Comprehensive Income (Loss) by Component
Balance at beginning of period	216	229
Amounts reclassified from accumulated other comprehensive income (loss), net of tax	(4)	(4)
Other comprehensive income (loss)	(4)	(4)
Balance at end of period	212	225
Amounts reclassified from accumulated other comprehensive income (loss), pretax	(5)	(6)
Pension and other postretirement benefits:
Changes in Accumulated Other Comprehensive Income (Loss) by Component
Balance at beginning of period	(238)	(211)
Other comprehensive income (loss)	0	0
Balance at end of period	$ (238)	$ (211)

CVS HEALTH Corp 10-Q