v3.2.0.727

Investments (Schedule Of Amortized Cost And Fair Value Of Fixed Maturities And Related Other-Than-Temporary Impairment Recognized In Accumulated Other Comprehensive Income) (Detail) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Investment [Line Items]
Held to maturity, Amortized Cost	$ 8,676	$ 7,331
Held to maturity, Gross Unrealized Appreciation	(209)	(266)
Held to maturity, Gross Unrealized Depreciation	(80)	(8)
Held to maturity, Fair Value	8,805	7,589
Available for sale, Amortized Cost	47,599	47,826
AvailableforsaleSecuritiesGrossUnrealizedGainAccumulatedInInvestments	1,464	1,871
Available for sale, Gross Unrealized Depreciation	(362)	(302)
Available for sale, Fair Value	48,701	49,395
Available for sale, OTTI recognized in AOCI	(12)	(8)
U.S. Treasury And Agency [Member]
Investment [Line Items]
Held to maturity, Amortized Cost	743	832
Held to maturity, Gross Unrealized Appreciation	(16)	(20)
Held to maturity, Gross Unrealized Depreciation	(1)	(2)
Held to maturity, Fair Value	758	850
Held to maturity, OTTI recognized in AOCI	0	0
Available for sale, Amortized Cost	2,743	2,741
AvailableforsaleSecuritiesGrossUnrealizedGainAccumulatedInInvestments	67	87
Available for sale, Gross Unrealized Depreciation	(5)	(8)
Available for sale, Fair Value	2,805	2,820
Available for sale, OTTI recognized in AOCI	0	0
Foreign [Member]
Investment [Line Items]
Held to maturity, Amortized Cost	808	916
Held to maturity, Gross Unrealized Appreciation	(39)	(47)
Held to maturity, Gross Unrealized Depreciation	(4)	0
Held to maturity, Fair Value	843	963
Held to maturity, OTTI recognized in AOCI	0	0
Available for sale, Amortized Cost	14,739	14,703
AvailableforsaleSecuritiesGrossUnrealizedGainAccumulatedInInvestments	529	629
Available for sale, Gross Unrealized Depreciation	(112)	(90)
Available for sale, Fair Value	15,156	15,242
Available for sale, OTTI recognized in AOCI	(5)	0
Corporate Securities [Member]
Investment [Line Items]
Held to maturity, Amortized Cost	3,113	2,323
Held to maturity, Gross Unrealized Appreciation	(72)	(102)
Held to maturity, Gross Unrealized Depreciation	(56)	(2)
Held to maturity, Fair Value	3,129	2,423
Held to maturity, OTTI recognized in AOCI	0	0
Available for sale, Amortized Cost	16,515	16,897
AvailableforsaleSecuritiesGrossUnrealizedGainAccumulatedInInvestments	534	704
Available for sale, Gross Unrealized Depreciation	(171)	(170)
Available for sale, Fair Value	16,878	17,431
Available for sale, OTTI recognized in AOCI	(6)	(7)
Collateralized Mortgage Backed Securities [Member]
Investment [Line Items]
Held to maturity, Amortized Cost	1,828	1,983
Held to maturity, Gross Unrealized Appreciation	(50)	(57)
Held to maturity, Gross Unrealized Depreciation	(1)	(1)
Held to maturity, Fair Value	1,877	2,039
Held to maturity, OTTI recognized in AOCI	0	0
Available for sale, Amortized Cost	10,607	10,011
AvailableforsaleSecuritiesGrossUnrealizedGainAccumulatedInInvestments	237	304
Available for sale, Gross Unrealized Depreciation	(60)	(29)
Available for sale, Fair Value	10,784	10,286
Available for sale, OTTI recognized in AOCI	(1)	(1)
States, Municipalities, And Political Subdivisions [Member]
Investment [Line Items]
Held to maturity, Amortized Cost	2,184	1,277
Held to maturity, Gross Unrealized Appreciation	(32)	(40)
Held to maturity, Gross Unrealized Depreciation	(18)	(3)
Held to maturity, Fair Value	2,198	1,314
Held to maturity, OTTI recognized in AOCI	0	0
Available for sale, Amortized Cost	2,995	3,474
AvailableforsaleSecuritiesGrossUnrealizedGainAccumulatedInInvestments	97	147
Available for sale, Gross Unrealized Depreciation	(14)	(5)
Available for sale, Fair Value	3,078	3,616
Available for sale, OTTI recognized in AOCI	$ 0	$ 0

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Accumulated other comprehensive loss related to portion of other than temporary impairment (OTTI) due to factors other than credit losses on debt securities categorized as available-for-sale that an entity does not intend to sell and which it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis of the debt security. The amount represented by this item is net of tax, as applicable.

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