Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 2,343	$ 4,042
Investment securities	10,026	9,557
Receivables, less allowance for doubtful accounts of $79 in 2018 and $96 in 2017	1,015	854
Other current assets	3,564	2,949
Total current assets	16,948	17,402
Property and equipment, net	1,735	1,584
Long-term investment securities	411	2,745
Equity method investment in Kindred at Home	1,047	0
Goodwill	3,897	3,281
Other long-term assets	1,375	2,166
Total assets	25,413	27,178
Current liabilities:
Benefits payable	4,862	4,668
Trade accounts payable and accrued expenses	3,067	4,069
Book overdraft	171	141
Unearned revenues	283	378
Short-term debt	1,694	150
Total current liabilities	10,077	9,406
Long-term debt	4,375	4,770
Future policy benefits payable	219	2,923
Other long-term liabilities	581	237
Total liabilities	15,252	17,336
Commitments and contingencies (Note 16)
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 December 31, 2018 and 198,572,458 shares issued at December 31, 2017	33	33
Capital in excess of par value	2,535	2,445
Retained earnings	15,072	13,670
Accumulated other comprehensive (loss) income	(159)	19
Treasury stock, at cost, 63,028,169 shares at December 31, 2018 and 60,893,762 shares at December 31, 2017	(7,320)	(6,325)
Total stockholders’ equity	10,161	9,842
Total liabilities and stockholders’ equity	$ 25,413	$ 27,178