Segment Information (Tables)

12 Months Ended

Dec. 31, 2012

Segment Information [Table] [Abstract]

Health Care Segment Financial Data Table [Text Block]

(In millions)	2012		2011		2010
Global Health Care
Premiums and fees:
Medical:
Guaranteed cost (1)	$	4,256	$	4,176	$	3,929
Experience-rated (2)		2,022		1,934		1,823
Stop loss		1,672		1,451		1,287
International health care		1,648		1,344		976
Dental		1,005		894		804
Medicare		4,969		489		1,470
Medicaid		207		-		-
Medicare Part D		1,421		685		615
Other		677		600		543
Total medical		17,877		11,573		11,447
Fees (3)		3,096		2,870		2,687
Total premiums and fees		20,973		14,443		14,134
Mail order pharmacy revenues		1,623		1,447		1,420
Other revenues		225		236		269
Net investment income		259		263		230
Segment revenues	$	23,080	$	16,389	$	16,053
Depreciation and amortization	$	500	$	297	$	255
Income taxes	$	793	$	616	$	520
Segment earnings	$	1,418	$	1,105	$	940
(1) Excludes the international health care business.
(2) Includes minimum premium business that has a risk profile similar to experience-rated funding arrangements. The risk portion of minimum premium revenue is reported in experience-rated medical premium whereas the self funding portion of minimum premium revenue is reported in fees. Also includes certain non-participating cases for which special customer level reporting of experience is required.
(3) Includes fees related to the international health care business. Fees related to Medicare Part D of $61 million in 2011 and $57 million in 2010 have been reclassified to premiums to conform to current presentation.

Other Segments Financial Data Table [Text Block]

(In millions)	2012		2011		2010
Group Disability and Life
Premiums and fees:
Life	$	1,426	$	1,333	$	1,341
Disability		1,413		1,268		1,167
Other		270		256		262
Total		3,109		2,857		2,770
Other revenues		-		-		123
Net investment income		300		291		287
Segment revenues	$	3,409	$	3,148	$	3,180
Depreciation and amortization	$	10	$	10	$	8
Income taxes	$	116	$	113	$	127
Segment earnings	$	279	$	295	$	305
Global Supplemental Benefits
Premiums and fees	$	1,984	$	1,528	$	1,231
Other revenues		21		15		22
Net investment income		90		83		69
Segment revenues	$	2,095	$	1,626	$	1,322
Depreciation and amortization	$	28	$	13	$	8
Income taxes	$	36	$	36	$	42
Equity in income of investees	$	10	$	15	$	18
Segment earnings	$	142	$	97	$	84
Run-off Reinsurance
Premiums and fees and other revenues	$	(98)	$	20	$	(133)
Net investment income		102		103		114
Segment revenues	$	4	$	123	$	(19)
Income tax benefits	$	-	$	(99)	$	(136)
Segment earnings (loss)	$	-	$	(183)	$	26
Other Operations
Premiums and fees and other revenues	$	155	$	169	$	174
Net investment income		388		400		404
Segment revenues	$	543	$	569	$	578
Depreciation and amortization	$	22	$	25	$	21
Income taxes	$	43	$	29	$	39
Segment earnings	$	82	$	89	$	85
Corporate
Other revenues and eliminations	$	(61)	$	(58)	$	(62)
Net investment income		5		6		1
Segment revenues	$	(56)	$	(52)	$	(61)
Income tax benefits	$	(148)	$	(101)	$	(98)
Segment loss	$	(329)	$	(184)	$	(211)
Realized investment gains
Realized investment gains	$	44	$	62	$	75
Income taxes		13		21		25
Realized investment gains
net of taxes and noncontrolling interest	$	31	$	41	$	50
Total
Premiums and fees and other revenues	$	26,308	$	19,210	$	18,528
Mail order pharmacy revenues		1,623		1,447		1,420
Net investment income		1,144		1,146		1,105
Realized investment gains		44		62		75
Total revenues	$	29,119	$	21,865	$	21,128
Depreciation and amortization	$	560	$	345	$	292
Income taxes	$	853	$	615	$	519
Segment earnings	$	1,592	$	1,219	$	1,229
Realized investment gains,
net of taxes and noncontrolling interest	$	31	$	41	$	50
Shareholders' net income	$	1,623	$	1,260	$	1,279

Revenues By Product Table [Text Block]

(In millions)	2012		2011		2010
Medical	$	20,973	$	14,443	$	14,134
Disability		1,413		1,268		1,167
Supplemental Health, Life, and Accident		3,680		3,117		2,834
Mail order pharmacy		1,623		1,447		1,420
Other		242		382		393
Total	$	27,931	$	20,657	$	19,948

Revenues by Geographic Location [Table Text Block]

(In millions)	2012		2011		2010
U.S.	$	25,217	$	18,522	$	18,326
South Korea		1,076		909		717
All other foreign		1,638		1,226		905
Total	$	27,931	$	20,657	$	19,948