Consolidated Statements of Cash Flows - USD ($) $ in Millions		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020
Cash Flows from Operating Activities
Net income		$ 4,282	$ 4,347
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization		2,180	2,089
Realized investment (gains) losses, net		(128)	18
Deferred income tax (benefit)		(104)	(340)
Debt extinguishment costs		141	199
Net changes in assets and liabilities, net of non-operating effects:
Accounts receivable		(4,039)	(2,810)
Inventories		145	5
Deferred policy acquisition costs		(182)	(244)
Reinsurance recoverable and Other assets		(281)	(468)
Insurance liabilities		863	740
Pharmacy and other service costs payable		1,357	2,084
Accounts payable and Accrued expenses and other liabilities		(1,411)	(32)
Other, net		93	468
NET CASH PROVIDED BY OPERATING ACTIVITIES		2,916	6,056
Proceeds from investments sold:
Debt securities and equity securities		1,052	2,038
Investment maturities and repayments:
Debt securities and equity securities		1,265	1,097
Commercial mortgage loans		127	14
Other sales, maturities and repayments (primarily short-term and other long-term investments)		1,261	1,086
Investments purchased or originated:
Debt securities and equity securities		(2,742)	(3,317)
Commercial mortgage loans		(233)	(55)
Other (primarily short-term and other long-term investments)		(1,768)	(1,434)
Property and equipment purchases, net		(850)	(775)
Acquisitions, net of cash acquired		(1,836)	(135)
Divestiture, net of cash sold		(61)	0
Other, net		51	37
NET CASH (USED IN) INVESTING ACTIVITIES		(3,734)	(1,444)
Cash Flows from Financing Activities
Deposits and interest credited to contractholder deposit funds		132	769
Withdrawals and benefit payments from contractholder deposit funds		(139)	(736)
Net change in short-term debt		1,633	592
Net proceeds on issuance of term loan		0	1,398
Payments for debt extinguishment		(136)	(212)
Repayment of long-term debt		(4,578)	(6,897)
Net proceeds on issuance of long-term debt		4,260	3,465
Repurchase of common stock		(6,321)	(2,352)
Issuance of common stock		301	239
Common stock dividend paid		(1,017)	(15)
Other, net		24	(63)
NET CASH (USED IN) FINANCING ACTIVITIES		(5,841)	(3,812)
Effect of foreign currency rate changes on cash, cash equivalents and restricted cash		(46)	(7)
Net (decrease) increase in cash, cash equivalents and restricted cash		(6,705)	793
Cash, cash equivalents and restricted cash January 1,	[1]	10,245	5,411
Cash, cash equivalents and restricted cash, September 30,		3,540	6,204
Cash reclassified to assets of business held for sale		0	(798)
Cash, cash equivalents, and restricted cash December 31, per Consolidated Balance Sheets	[2]	3,540	5,406
Supplemental Disclosure of Cash Information:
Income taxes paid, net of refunds		1,916	1,408
Interest paid		$ 950	$ 1,112

[1] Includes $743 million reported in Assets of business held for sale as of January 1, 2020.

[2] Restricted cash and cash equivalents were reported in other long-term investments as of September 30, 2021, December 31, 2020 and September 30, 2020. Restricted cash and cash equivalents were reported in other long-term investments and other assets as of December 31, 2019.