Consolidated Statements Of Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenues
Premiums	$ 26,392	$ 23,793	$ 77,001	$ 70,137
Product revenue	2,598	1,116	7,485	1,260
Administrative fees and other revenue	1,659	1,535	4,789	4,612
Total operating revenue	30,649	26,444	89,275	76,009
Net investment income	280	242	591	737
Net realized gains (losses) on financial instruments	247	1	241	90
Impairment losses on investments:
Total impairment recoveries (losses) on investments	(24)	(14)	(119)	(36)
Portion of impairment losses recognized in other comprehensive income	6	1	55	6
Impairment recoveries (losses) recognized in income	(18)	(13)	(64)	(30)
Total revenues	31,158	26,674	90,043	76,806
Expenses
Benefit expense	22,921	20,753	63,957	60,403
Cost of products sold	2,222	745	6,431	843
Selling, general and administrative expense	5,305	3,418	13,132	9,862
Interest expense	198	185	593	556
Amortization of other intangible assets	93	84	269	256
Loss (gain) on extinguishment of debt	30	0	34	(1)
Total expenses	30,769	25,185	84,416	71,919
Income before income tax expense	389	1,489	5,627	4,887
Income tax expense	167	306	1,606	1,014
Net income	$ 222	$ 1,183	$ 4,021	$ 3,873
Net income per share
Basic net income per share	$ 0.88	$ 4.64	$ 15.96	$ 15.11
Diluted net income per share	0.87	4.55	15.75	14.83
Dividends per share	$ 0.95	$ 0.80	$ 2.85	$ 2.40