Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 4,864	$ 3,394
Investment securities	13,092	13,192
Receivables, less allowance for doubtful accounts of $69 in 2022 and $83 in 2021	3,174	1,814
Other current assets	5,710	6,493
Total current assets	26,840	24,893
Property and equipment, net	3,189	3,073
Long-term investment securities	392	780
Equity method investments	138	141
Goodwill	11,139	11,092
Other long-term assets	4,610	4,379
Total assets	46,308	44,358
Current liabilities:
Benefits payable	9,378	8,289
Trade accounts payable and accrued expenses	5,859	4,509
Book overdraft	317	326
Unearned revenues	288	254
Short-term debt	1,690	1,953
Total current liabilities	17,532	15,331
Long-term debt	11,285	10,541
Other long-term liabilities	2,149	2,383
Total liabilities	30,966	28,255
Stockholders’ equity:
Preferred stock, $1 par; 10,000,000 shares authorized; none issued	0	0
Common stock, $0.16 2/3 par; 300,000,000 shares authorized; 198,648,742 shares issued at March 31, 2022 and December 31, 2021	33	33
Capital in excess of par value	3,103	3,082
Retained earnings	23,915	23,086
Accumulated other comprehensive (loss) income	(572)	42
Treasury stock, at cost, 72,155,340 shares at March 31, 2022 and 69,846,758 shares at December 31, 2021	(11,160)	(10,163)
Noncontrolling interests	23	23
Total stockholders’ equity	15,342	16,103
Total liabilities and stockholders’ equity	$ 46,308	$ 44,358