Consolidated Statements of Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenues
Premiums	$ 104,109	$ 94,173	$ 85,421
Product Revenue	10,384	2,760	0
Administrative fees and other revenue	6,315	6,208	5,920
Total operating revenue	120,808	103,141	91,341
Net investment income	877	1,005	970
Net realized gains (losses) on financial instruments	182	67	(206)
Total revenues	121,867	104,213	92,105
Expenses
Benefit expense	88,045	81,786	71,895
Cost of products sold	8,953	1,992	0
Selling, general and administrative expense	17,450	13,364	14,020
Interest expense	784	746	753
Amortization of other intangible assets	361	338	358
Loss on extinguishment of debt	36	2	11
Total expenses	115,629	98,228	87,037
Income before income tax expense	6,238	5,985	5,068
Income tax expense	1,666	1,178	1,318
Net income	$ 4,572	$ 4,807	$ 3,750
Net income per share
Basic net income per share	$ 18.23	$ 18.81	$ 14.53
Diluted net income per share	17.98	18.47	14.19
Dividends per share	$ 3.80	$ 3.20	$ 3.00