v2.4.0.8

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, unless otherwise specified | Sep. 30, 2014 | Dec. 31, 2013
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Investment [Line Items] |  |
Held to maturity, Amortized Cost | $ 7,548 | $ 6,098
Held to maturity, Gross Unrealized Appreciation | 228 | 187
Held to maturity, Gross Unrealized Depreciation | (13) | (22)
Held to maturity, Fair Value | 7,763 | 6,263
Held to maturity, OTTI recognized in AOCI |  |
Available for sale, Amortized Cost | 47,688 | 48,406
AvailableforsaleSecuritiesGrossUnrealizedGainAccumulatedInInvestments | 1,703 | 1,465
Available for sale, Gross Unrealized Depreciation | (243) | (617)
Available for sale, Fair Value | 49,148 | 49,254
Available for sale, OTTI recognized in AOCI | (4) | (40)
U.S. Treasury And Agency [Member] |  |
Investment [Line Items] |  |
Held to maturity, Amortized Cost | 804 | 820
Held to maturity, Gross Unrealized Appreciation | 16 | 16
Held to maturity, Gross Unrealized Depreciation | (3) | (4)
Held to maturity, Fair Value | 817 | 832
Held to maturity, OTTI recognized in AOCI | 0 | 0
Available for sale, Amortized Cost | 2,627 | 2,946
AvailableforsaleSecuritiesGrossUnrealizedGainAccumulatedInInvestments | 70 | 62
Available for sale, Gross Unrealized Depreciation | (19) | (59)
Available for sale, Fair Value | 2,678 | 2,949
Available for sale, OTTI recognized in AOCI | 0 | 0
Foreign [Member] |  |
Investment [Line Items] |  |
Held to maturity, Amortized Cost | 937 | 864
Held to maturity, Gross Unrealized Appreciation | 42 | 33
Held to maturity, Gross Unrealized Depreciation | (1) | 0
Held to maturity, Fair Value | 978 | 897
Held to maturity, OTTI recognized in AOCI | 0 | 0
Available for sale, Amortized Cost | 14,741 | 14,336
AvailableforsaleSecuritiesGrossUnrealizedGainAccumulatedInInvestments | 542 | 377
Available for sale, Gross Unrealized Depreciation | (52) | (122)
Available for sale, Fair Value | 15,231 | 14,591
Available for sale, OTTI recognized in AOCI | (1) | 0
Corporate Securities [Member] |  |
Investment [Line Items] |  |
Held to maturity, Amortized Cost | 2,443 | 1,922
Held to maturity, Gross Unrealized Appreciation | 86 | 83
Held to maturity, Gross Unrealized Depreciation | (4) | 0
Held to maturity, Fair Value | 2,525 | 2,005
Held to maturity, OTTI recognized in AOCI | 0 | 0
Available for sale, Amortized Cost | 16,715 | 16,825
AvailableforsaleSecuritiesGrossUnrealizedGainAccumulatedInInvestments | 716 | 777
Available for sale, Gross Unrealized Depreciation | (93) | (132)
Available for sale, Fair Value | 17,338 | 17,470
Available for sale, OTTI recognized in AOCI | (2) | (6)
Mortgage Backed-Securities [Member] |  |
Investment [Line Items] |  |
Held to maturity, Amortized Cost | 2,087 | 1,341
Held to maturity, Gross Unrealized Appreciation | 46 | 39
Held to maturity, Gross Unrealized Depreciation | (3) | (1)
Held to maturity, Fair Value | 2,130 | 1,379
Held to maturity, OTTI recognized in AOCI | 0 | 0
Available for sale, Amortized Cost | 10,159 | 10,937
AvailableforsaleSecuritiesGrossUnrealizedGainAccumulatedInInvestments | 237 | 184
Available for sale, Gross Unrealized Depreciation | (72) | (227)
Available for sale, Fair Value | 10,324 | 10,894
Available for sale, OTTI recognized in AOCI | (1) | (34)
States, Municipalities, And Political Subdivisions [Member] |  |
Investment [Line Items] |  |
Held to maturity, Amortized Cost | 1,277 | 1,151
Held to maturity, Gross Unrealized Appreciation | 38 | 16
Held to maturity, Gross Unrealized Depreciation | (2) | (17)
Held to maturity, Fair Value | 1,313 | 1,150
Held to maturity, OTTI recognized in AOCI | 0 | 0
Available for sale, Amortized Cost | 3,446 | 3,362
AvailableforsaleSecuritiesGrossUnrealizedGainAccumulatedInInvestments | 138 | 65
Available for sale, Gross Unrealized Depreciation | (7) | (77)
Available for sale, Fair Value | 3,577 | 3,350
Available for sale, OTTI recognized in AOCI | $ 0 | $ 0

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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669686-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (aaa) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563 + Details
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- Definition 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 held-to-maturity 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669686-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (dd) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563 + Details
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- Definition Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563 + Details
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- Definition Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563 + Details
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- Definition This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.2) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount of debt securities categorized neither as held-to-maturity nor trading. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28360136&loc=d3e22054-111558 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26610-111562 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -Section 50 -Paragraph 2 -Subparagraph (b)-(g) -URI http://asc.fasb.org/extlink&oid=6957658&loc=d3e62557-112803 + Details
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- Definition Amount after other than temporary impairment (OTTI) accretion, of investments in debt securities classified as held-to-maturity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=28360136&loc=d3e22054-111558 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.6) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition Amount of accumulated unrealized gain on investments in debt securities classified as held-to-maturity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563 + Details
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- Definition Amount of accumulated unrealized loss on investments in debt securities classified as held-to-maturity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563 + Details
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- Definition Fair value of investments in debt securities classified as held-to-maturity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563 + Details
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