Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 3,378	$ 4,673
Investment securities	13,471	12,554
Receivables, less allowance for doubtful accounts of $78 in 2021 and $72 in 2020	2,438	1,138
Other current assets	6,503	5,276
Total current assets	25,790	23,641
Property and equipment, net	2,690	2,371
Long-term investment securities	1,182	1,212
Equity method investments	1,240	1,170
Goodwill	4,914	4,447
Other long-term assets	2,254	2,128
Total assets	38,070	34,969
Current liabilities:
Benefits payable	8,485	8,143
Trade accounts payable and accrued expenses	4,898	4,013
Book overdraft	236	320
Unearned revenues	323	318
Short-term debt	1,109	600
Total current liabilities	15,051	13,394
Long-term debt	6,063	6,060
Other long-term liabilities	2,113	1,787
Total liabilities	23,227	21,241
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 June 30, 2021 and December 31, 2020	33	33
Capital in excess of par value	3,018	2,705
Retained earnings	21,751	20,517
Accumulated other comprehensive income	216	391
Treasury stock, at cost, 70,144,078 shares at June 30, 2021 and 69,787,614 shares at December 31, 2020	(10,175)	(9,918)
Total stockholders’ equity	14,843	13,728
Total liabilities and stockholders’ equity	$ 38,070	$ 34,969