Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 3,877	$ 2,343
Investment securities	9,876	10,026
Receivables, less allowance for doubtful accounts of $78 in 2019 and $79 in 2018	1,955	1,015
Other current assets	3,965	3,564
Total current assets	19,673	16,948
Property and equipment, net	1,754	1,735
Long-term investment securities	422	411
Equity method investment in Kindred at Home	1,048	1,047
Goodwill	3,897	3,897
Other long-term assets	1,555	1,375
Total assets	28,349	25,413
Current liabilities:
Benefits payable	6,024	4,862
Trade accounts payable and accrued expenses	3,719	3,067
Book overdraft	154	171
Unearned revenues	312	283
Short-term debt	1,718	1,694
Total current liabilities	11,927	10,077
Long-term debt	4,376	4,375
Future policy benefits payable	213	219
Other long-term liabilities	992	581
Total liabilities	17,508	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; 198,594,841 shares issued at March 31, 2019 and 198,594,841 shares issued at December 31, 2018	33	33
Capital in excess of par value	2,722	2,535
Retained earnings	15,563	15,072
Accumulated other comprehensive loss	(10)	(159)
Treasury stock, at cost, 63,559,823 shares at March 31, 2019 and 63,028,169 shares at December 31, 2018	(7,467)	(7,320)
Total stockholders’ equity	10,841	10,161
Total liabilities and stockholders’ equity	$ 28,349	$ 25,413