Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Cash flows from operating activities:
Cash receipts from customers	$ 90,809	$ 84,997
Cash paid for inventory, prescriptions dispensed and health services rendered	(48,433)	(44,824)
Insurance benefits paid	(28,477)	(24,894)
Cash paid to other suppliers and employees	(8,690)	(9,677)
Interest and investment income received	497	407
Interest paid	(1,012)	(1,043)
Income taxes paid	(138)	(63)
Net cash provided by operating activities	4,556	4,903
Cash flows from investing activities:
Proceeds from sales and maturities of investments	3,534	2,153
Purchases of investments	(3,552)	(3,545)
Purchases of property and equipment	(743)	(705)
Acquisitions (net of cash and restricted cash acquired)	(20)	(25)
Other	19	28
Net cash used in investing activities	(762)	(2,094)
Cash flows from financing activities:
Commercial paper borrowings (repayments), net	(859)	2,519
Repayments of long-term debt	(743)	(18)
Repurchase of common stock	0	(3,027)
Dividends paid	(840)	(840)
Proceeds from exercise of stock options	144	203
Payments for taxes related to net share settlement of equity awards	(11)	(31)
Other	(23)	(33)
Net cash used in financing activities	(2,332)	(1,227)
Net increase in cash, cash equivalents and restricted cash	1,462	1,582
Cash, cash equivalents and restricted cash at the beginning of the period	8,884	8,525
Cash, cash equivalents and restricted cash at the end of the period	10,346	10,107
Reconciliation of net income to net cash provided by operating activities:
Net income	1,782	1,124
Adjustments required to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	1,154	1,138
Stock-based compensation	126	137
Loss on sale of subsidiary	236	0
Deferred income taxes and other items	(169)	(217)
Change in operating assets and liabilities, net of effects from acquisitions:
Accounts receivable, net	(3,053)	3,008
Inventories	722	1,660
Other assets	(1,101)	(2,836)
Accounts payable and pharmacy claims and discounts payable	2,619	(1,410)
Health care costs payable and other insurance liabilities	364	2,253
Other liabilities	1,876	46
Net cash provided by operating activities	$ 4,556	$ 4,903