v3.8.0.1

Investments (Amortized Cost and Fair Value of Fixed Maturities by Contractual Maturities) (Details) - USD ($) $ in Millions | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Available for Sale, Amortized Cost |  |  |
Due in one year or less |  | $ 8,244 |
Due after one year through five years |  | 47,967 |
Due after five years through ten years |  | 69,445 |
Due after ten years |  | 158,139 |
Amortized Cost |  | 312,385 | $ 292,581
Available-for-Sale, Fair Value |  |  |
Due in one year or less |  | 8,711 |
Due after one year through five years |  | 51,936 |
Due after five years through ten years |  | 75,596 |
Due after ten years |  | 181,378 |
Fair Value | [1] | 346,780 | 321,419
Held-to-Maturity, Amortized Cost |  |  |
Due in one year or less |  | 0 |
Due after one year through five years |  | 176 |
Due after five years through ten years |  | 565 |
Due after ten years |  | 862 |
Amortized Cost | [1] | 2,049 | 2,144
Held-to-Maturity, Fair Value |  |  |
Due in one year or less |  | 0 |
Due after one year through five years |  | 183 |
Due after five years through ten years |  | 642 |
Due after ten years |  | 1,127 |
Fixed maturities, held to maturity, fair value |  | 2,430 | 2,524
Asset-backed securities |  |  |
Available for Sale, Amortized Cost |  |  |
Debt Maturities, without single maturity date |  | 11,965 |
Available-for-Sale, Fair Value |  |  |
Debt Maturities, without Single Maturity Date |  | 12,233 |
Held-to-Maturity, Amortized Cost |  |  |
Debt Maturities, without Single Maturity Date |  | 0 |
Held-to-Maturity, Fair Value |  |  |
Debt Maturities, without Single Maturity Date |  | 0 |
Commercial Mortgage Backed Securities |  |  |
Available for Sale, Amortized Cost |  |  |
Debt Maturities, without single maturity date |  | 13,134 |
Available-for-Sale, Fair Value |  |  |
Debt Maturities, without Single Maturity Date |  | 13,281 |
Held-to-Maturity, Amortized Cost |  |  |
Debt Maturities, without Single Maturity Date |  | 0 |
Held-to-Maturity, Fair Value |  |  |
Debt Maturities, without Single Maturity Date |  | 0 |
Residential mortgage-backed securities |  |  |
Available for Sale, Amortized Cost |  |  |
Debt Maturities, without single maturity date |  | 3,491 |
Available-for-Sale, Fair Value |  |  |
Debt Maturities, without Single Maturity Date |  | 3,645 |
Held-to-Maturity, Amortized Cost |  |  |
Debt Maturities, without Single Maturity Date |  | 446 |
Held-to-Maturity, Fair Value |  |  |
Debt Maturities, without Single Maturity Date |  | 478 |
Prudential Netting Agreement | U.S. corporate private securities |  |  |
Available-for-Sale, Fair Value |  |  |
Fair Value |  | 2,660 | 1,456
Fixed maturities |  |  |
Available for Sale, Amortized Cost |  |  |
Amortized Cost |  | 312,385 | 292,581
Available-for-Sale, Fair Value |  |  |
Fair Value |  | 346,780 | 321,419
Held-to-Maturity, Amortized Cost |  |  |
Amortized Cost |  | 2,049 | 2,144
Held-to-Maturity, Fair Value |  |  |
Fixed maturities, held to maturity, fair value |  | 2,430 | 2,524
Fixed maturities | U.S. corporate private securities |  |  |
Available for Sale, Amortized Cost |  |  |
Amortized Cost |  | 31,852 | 29,974
Available-for-Sale, Fair Value |  |  |
Fair Value |  | 33,734 | 31,788
Fixed maturities | Asset-backed securities |  |  |
Available for Sale, Amortized Cost |  |  |
Amortized Cost |  | 11,965 | 11,759
Available-for-Sale, Fair Value |  |  |
Fair Value |  | 12,233 | 11,935
Fixed maturities | Commercial Mortgage Backed Securities |  |  |
Available for Sale, Amortized Cost |  |  |
Amortized Cost |  | 13,134 | 12,589
Available-for-Sale, Fair Value |  |  |
Fair Value |  | 13,281 | 12,704
Held-to-Maturity, Amortized Cost |  |  |
Amortized Cost |  | 0 | 0
Held-to-Maturity, Fair Value |  |  |
Fixed maturities, held to maturity, fair value |  | 0 | 0
Fixed maturities | Residential mortgage-backed securities |  |  |
Available for Sale, Amortized Cost |  |  |
Amortized Cost |  | 3,491 | 4,308
Available-for-Sale, Fair Value |  |  |
Fair Value |  | 3,645 | 4,532
Held-to-Maturity, Amortized Cost |  |  |
Amortized Cost |  | 446 | 573
Held-to-Maturity, Fair Value |  |  |
Fixed maturities, held to maturity, fair value |  | 478 | 616
Fixed maturities | Prudential Netting Agreement |  |  |
Held-to-Maturity, Amortized Cost |  |  |
Amortized Cost |  | 4,627 | 4,403
Held-to-Maturity, Fair Value |  |  |
Fixed maturities, held to maturity, fair value |  | 4,913 | 4,403
Fixed maturities | Prudential Netting Agreement | U.S. corporate private securities |  |  |
Available for Sale, Amortized Cost |  |  |
Amortized Cost |  | 2,660 | 1,456
Available-for-Sale, Fair Value |  |  |
Fair Value |  | $ 2,660 | $ 1,456
[1] | See Note 5 for details of balances associated with variable interest entities.

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- Definition Amount after adjustments of available-for-sale debt securities at cost, maturing in the second fiscal year through the fifth fiscal year following the latest fiscal year. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings less cumulative-effect adjustments, and fair value hedge accounting adjustments. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + 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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27198-111563 + Details
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- Definition Amount after adjustments of available-for-sale debt securities at cost, maturing after the tenth fiscal year following the latest fiscal year. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings less cumulative-effect adjustments, and fair value hedge accounting adjustments. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27198-111563 Reference 2: 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 after adjustments of available-for-sale debt securities at cost, maturing in the next fiscal year following the latest fiscal year. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings less cumulative-effect adjustments, and fair value hedge accounting adjustments. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27198-111563 Reference 2: 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 available-for-sale debt securities at cost, net of adjustments, that do not have a single maturity date and which the entity has decided to disclose separately rather than allocating the cost over several maturity groupings. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings (less any cumulative-effect adjustments, as defined) and fair value hedge accounting adjustments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27198-111563 Reference 2: 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 available-for-sale debt securities at fair value that do not have a single maturity date and which the entity has decided to disclose separately rather than allocating the fair value over several maturity groupings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27198-111563 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=82897076&loc=d3e27161-111563 + 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 (a) -URI http://asc.fasb.org/extlink&oid=82897076&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=75030427&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 (f) -URI http://asc.fasb.org/extlink&oid=82897076&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 Carrying amount of debt securities accounted for as held-to-maturity, net of adjustments including, but not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized, and fair value hedge accounting adjustments, maturing in the fifth through tenth fiscal year following the latest fiscal year. + 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)(3) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27232-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=75019621&loc=d3e62586-112803 + Details
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