Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 4,778	$ 2,343
Investment securities	9,991	10,026
Receivables, less allowance for doubtful accounts of $73 in 2019 and $79 in 2018	904	1,015
Other current assets	4,487	3,564
Total current assets	20,160	16,948
Property and equipment, net	1,796	1,735
Long-term investment securities	411	411
Equity method investment in Kindred at Home	1,056	1,047
Goodwill	3,922	3,897
Other long-term assets	1,568	1,375
Total assets	28,913	25,413
Current liabilities:
Benefits payable	5,842	4,862
Trade accounts payable and accrued expenses	3,832	3,067
Book overdraft	204	171
Unearned revenues	312	283
Short-term debt	1,349	1,694
Total current liabilities	11,539	10,077
Long-term debt	4,377	4,375
Future policy benefits payable	214	219
Other long-term liabilities	911	581
Total liabilities	17,041	15,252
Commitments and contingencies (Note 14)
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; 198,627,992 shares issued at June 30, 2019 and 198,594,841 shares issued at December 31, 2018	33	33
Capital in excess of par value	2,763	2,535
Retained earnings	16,429	15,072
Accumulated other comprehensive income (loss)	112	(159)
Treasury stock, at cost, 63,538,702 shares at June 30, 2019 and 63,028,169 shares at December 31, 2018	(7,465)	(7,320)
Total stockholders’ equity	11,872	10,161
Total liabilities and stockholders’ equity	$ 28,913	$ 25,413