Segment Information (Tables)

6 Months Ended

Jun. 30, 2019

Segment Reporting [Abstract]

Financial Data By Reportable Segment

Financial data by reportable segment for the three and six months ended June 30, 2019 and 2018 is as follows:

	Commercial & Specialty Business		Government Business		Other			Eliminations			Total
Three Months Ended June 30, 2019
Operating revenue - unaffiliated	$	9,417	$	15,538	$	222		$	—		$	25,177
Operating revenue - affiliated	—		—		572			(572		)	—
Operating gain (loss)	983		478		(28		)	—			1,433
Three Months Ended June 30, 2018
Operating revenue - unaffiliated	$	9,055	$	13,619	$	41		$	—		$	22,715
Operating revenue - affiliated	—		—		309			(309		)	—
Operating gain (loss)	1,048		532		(21		)	—			1,559
Six Months Ended June 30, 2019
Operating revenue - unaffiliated	$	18,809	$	30,464	$	292		$	—		$	49,565
Operating revenue - affiliated	—		—		1,050			(1,050		)	—
Operating gain (loss)	2,581		855		(63		)	—			3,373
Six Months Ended June 30, 2018
Operating revenue - unaffiliated	$	18,006	$	26,972	$	79		$	—		$	45,057
Operating revenue - affiliated	—		—		631			(631		)	—
Operating gain (loss)	2,450		1,021		(44		)	—			3,427

Major Product Revenue by Segment

The major product revenues for each of the reportable segments for the three and six months ended June 30, 2019 and 2018 are as follows:

	Three Months Ended   June 30						Six Months Ended   June 30
	2019			2018			2019			2018
Commercial & Specialty Business
Managed care products	$	7,646		$	7,362		$	15,264		$	14,641
Managed care services	1,353			1,304			2,719			2,581
Dental/Vision products and services	327			304			650			608
Other	91			85			176			176
Total Commercial & Specialty Business	9,417			9,055			18,809			18,006
Government Business
Managed care products	15,444			13,510			30,264			26,750
Managed care services	94			109			200			222
Total Government Business	15,538			13,619			30,464			26,972
Other
Other	794			350			1,342			710
Eliminations
Eliminations	(572		)	(309		)	(1,050		)	(631		)
Total product revenues	$	25,177		$	22,715		$	49,565		$	45,057

Reconciliation Of Reportable Segments Operating Revenues To Total Revenues Reported In The Consolidated Statements Of Income

A reconciliation of reportable segments’ operating revenue to the amounts of total revenues included in our consolidated statements of income for the three and six months ended June 30, 2019 and 2018 is as follows:

	Three Months Ended   June 30						Six Months Ended   June 30
	2019			2018			2019			2018
Reportable segments’ operating revenue	$	25,177		$	22,715		$	49,565		$	45,057
Net investment income	285			229			495			458
Net realized gains (losses) on financial instruments	11			4			89			(22		)
Other-than-temporary impairment losses recognized in income	(7		)	(4		)	(17		)	(12		)
Total revenues	$	25,466		$	22,944		$	50,132		$	45,481

Reconciliation Of Reportable Segments Operating Gain To Income Before Income Tax Expense Included In The Consolidated Statements Of Income

A reconciliation of reportable segments’ operating gain to income before income tax expense included in our consolidated statements of income for the three and six months ended June 30, 2019 and 2018 is as follows:

	Three Months Ended   June 30						Six Months Ended   June 30
	2019			2018			2019			2018
Reportable segments’ operating gain	$	1,433		$	1,559		$	3,373		$	3,427
Net investment income	285			229			495			458
Net realized gains (losses) on financial instruments	11			4			89			(22		)
Other-than-temporary impairment losses recognized in income	(7		)	(4		)	(17		)	(12		)
Interest expense	(184		)	(192		)	(371		)	(376		)
Amortization of other intangible assets	(85		)	(93		)	(172		)	(173		)
Gain (loss) on extinguishment of debt	—			1			1			(18		)
Income before income tax expense	$	1,453		$	1,504		$	3,398		$	3,284