Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 4,054	$ 2,343
Investment securities	10,972	10,026
Receivables, less allowance for doubtful accounts of $69 in 2019 and $79 in 2018	1,056	1,015
Other current assets	3,806	3,564
Total current assets	19,888	16,948
Property and equipment, net	1,955	1,735
Long-term investment securities	406	411
Goodwill	3,928	3,897
Equity method investment in Kindred at Home	1,063	1,047
Other long-term assets	1,834	1,375
Total assets	29,074	25,413
Current liabilities:
Benefits payable	6,004	4,862
Trade accounts payable and accrued expenses	3,754	3,067
Book overdraft	225	171
Unearned revenues	247	283
Short-term debt	699	1,694
Total current liabilities	10,929	10,077
Long-term debt	4,967	4,375
Future policy benefits payable	206	219
Other long-term liabilities	935	581
Total liabilities	17,037	15,252
Commitments and contingencies (Note 17)
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; 198,629,992 shares issued at December 31, 2019 and 198,594,841 shares issued at December 31, 2018	33	33
Capital in excess of par value	2,820	2,535
Retained earnings	17,483	15,072
Accumulated other comprehensive income (loss)	156	(159)
Treasury stock, at cost, 66,524,771 shares at December 31, 2019 and 63,028,169 shares at December 31, 2018	(8,455)	(7,320)
Total stockholders’ equity	12,037	10,161
Total liabilities and stockholders’ equity	$ 29,074	$ 25,413