Consolidated Statements of Earnings (USD $) In Millions, except Share data in Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013
Revenues:
Net premiums, principally supplemental health insurance	$ 4,854		$ 5,184
Net investment income	827		833
Realized investment gains (losses):
Other-than-temporary impairment losses realized	(3)	[1]	(55)	[1]
Sales and redemptions	41		119
Derivative and other gains (losses)	(84)		92
Total realized investment gains (losses)	(46)		156
Other income	5		35
Total revenues	5,640		6,208
Benefits and expenses:
Benefits and claims, net	3,220		3,521
Acquisition and operating expenses:
Amortization of deferred policy acquisition costs	294		283
Insurance commissions	366		392
Insurance expenses	534		534
Interest expense	80		71
Other operating expenses	42		46
Total acquisition and operating expenses	1,316		1,326
Total benefits and expenses	4,536		4,847
Earnings before income taxes	1,104		1,361
Income taxes	372		469
Net earnings	$ 732		$ 892
Net earnings per share:
Basic (in dollars per share)	$ 1.61		$ 1.91
Diluted (in dollars per share)	$ 1.60		$ 1.90
Weighted-average outstanding common shares used in computing earnings per share (In thousands):
Basic (in shares)	454,731		466,462
Diluted (in shares)	457,699		469,124
Cash dividends per share	$ 0.37		$ 0.35

[1] Includes $0 and $1 for the three-month periods ended March 31, 2014 and 2013, respectively, for impairments due to severity and duration of decline in fair value and $3 and $54 for the three-month periods ended March 31, 2014 and 2013, respectively, from change in intent to sell securities