v3.2.0.727

Fair Value Measurements (Carrying Values And Fair Values Of Financial Instruments Not Measured At Fair Value) (Detail) - USD ($) $ in Millions | Jun. 30, 2015 | Dec. 31, 2014
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Fair Value [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fixed maturities held to maturity, at amortized cost (fair value – $8,805 and $7,589) | $ 8,805 | $ 7,589
Investments in partially-owned insurance companies | 638 | 504
Total assets | 9,443 | 8,093
Short-term debt | 2,107 | 2,571
Long-term debt | 4,383 | 3,690
Trust preferred securities | 457 | 462
Total liabilities | 6,947 | 6,723
Carrying Value [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fixed maturities held to maturity, at amortized cost (fair value – $8,805 and $7,589) | 8,676 | 7,331
Investments in partially-owned insurance companies | 638 | 504
Total assets | 9,314 | 7,835
Short-term debt | 2,102 | 2,552
Long-term debt | 4,157 | 3,357
Trust preferred securities | 309 | 309
Total liabilities | 6,568 | 6,218
Fair Value, Inputs, Level 1 [Member] | Fair Value [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fixed maturities held to maturity, at amortized cost (fair value – $8,805 and $7,589) | 583 | 659
Investments in partially-owned insurance companies | 0 | 0
Total assets | 583 | 659
Short-term debt | 0 | 0
Long-term debt | 0 | 0
Trust preferred securities | 0 | 0
Total liabilities | 0 | 0
Fair Value, Inputs, Level 2 [Member] | Fair Value [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fixed maturities held to maturity, at amortized cost (fair value – $8,805 and $7,589) | 8,208 | 6,915
Investments in partially-owned insurance companies | 0 | 0
Total assets | 8,208 | 6,915
Short-term debt | 2,107 | 2,571
Long-term debt | 4,383 | 3,690
Trust preferred securities | 457 | 462
Total liabilities | 6,947 | 6,723
Fair Value, Inputs, Level 3 [Member] | Fair Value [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fixed maturities held to maturity, at amortized cost (fair value – $8,805 and $7,589) | 14 | 15
Investments in partially-owned insurance companies | 638 | 504
Total assets | 652 | 519
Short-term debt | 0 | 0
Long-term debt | 0 | 0
Trust preferred securities | 0 | 0
Total liabilities | 0 | 0
U.S. Treasury And Agency [Member] | Fair Value [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fixed maturities held to maturity, at amortized cost (fair value – $8,805 and $7,589) | 758 | 850
U.S. Treasury And Agency [Member] | Carrying Value [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fixed maturities held to maturity, at amortized cost (fair value – $8,805 and $7,589) | 743 | 832
U.S. Treasury And Agency [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fixed maturities held to maturity, at amortized cost (fair value – $8,805 and $7,589) | 583 | 659
U.S. Treasury And Agency [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fixed maturities held to maturity, at amortized cost (fair value – $8,805 and $7,589) | 175 | 191
U.S. Treasury And Agency [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fixed maturities held to maturity, at amortized cost (fair value – $8,805 and $7,589) | 0 | 0
Foreign [Member] | Fair Value [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fixed maturities held to maturity, at amortized cost (fair value – $8,805 and $7,589) | 843 | 963
Foreign [Member] | Carrying Value [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fixed maturities held to maturity, at amortized cost (fair value – $8,805 and $7,589) | 808 | 916
Foreign [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fixed maturities held to maturity, at amortized cost (fair value – $8,805 and $7,589) | 0 | 0
Foreign [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fixed maturities held to maturity, at amortized cost (fair value – $8,805 and $7,589) | 843 | 963
Foreign [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fixed maturities held to maturity, at amortized cost (fair value – $8,805 and $7,589) | 0 | 0
Corporate Debt Securities [Member] | Fair Value [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fixed maturities held to maturity, at amortized cost (fair value – $8,805 and $7,589) | 3,129 | 2,423
Corporate Debt Securities [Member] | Carrying Value [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fixed maturities held to maturity, at amortized cost (fair value – $8,805 and $7,589) | 3,113 | 2,323
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fixed maturities held to maturity, at amortized cost (fair value – $8,805 and $7,589) | 0 | 0
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fixed maturities held to maturity, at amortized cost (fair value – $8,805 and $7,589) | 3,115 | 2,408
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fixed maturities held to maturity, at amortized cost (fair value – $8,805 and $7,589) | 14 | 15
Collateralized Mortgage Backed Securities [Member] | Fair Value [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fixed maturities held to maturity, at amortized cost (fair value – $8,805 and $7,589) | 1,877 | 2,039
Collateralized Mortgage Backed Securities [Member] | Carrying Value [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fixed maturities held to maturity, at amortized cost (fair value – $8,805 and $7,589) | 1,828 | 1,983
Collateralized Mortgage Backed Securities [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fixed maturities held to maturity, at amortized cost (fair value – $8,805 and $7,589) | 0 | 0
Collateralized Mortgage Backed Securities [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fixed maturities held to maturity, at amortized cost (fair value – $8,805 and $7,589) | 1,877 | 2,039
Collateralized Mortgage Backed Securities [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fixed maturities held to maturity, at amortized cost (fair value – $8,805 and $7,589) | 0 | 0
US States and Political Subdivisions Debt Securities [Member] | Fair Value [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fixed maturities held to maturity, at amortized cost (fair value – $8,805 and $7,589) | 2,198 | 1,314
US States and Political Subdivisions Debt Securities [Member] | Carrying Value [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fixed maturities held to maturity, at amortized cost (fair value – $8,805 and $7,589) | 2,184 | 1,277
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fixed maturities held to maturity, at amortized cost (fair value – $8,805 and $7,589) | 0 | 0
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fixed maturities held to maturity, at amortized cost (fair value – $8,805 and $7,589) | 2,198 | 1,314
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fixed maturities held to maturity, at amortized cost (fair value – $8,805 and $7,589) | $ 0 | $ 0

X
- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + 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 210.5-02.18) -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 210 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 12 -Article 7 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + 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=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=51813488&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=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 Total investments in (A) an entity in which the entity has significant influence, but does not have control, (B) subsidiaries that are not required to be consolidated and are accounted for using the equity and or cost method, and (C) an entity in which the reporting entity shares control of the entity with another party or group. Includes long-term advances receivable from a party that is affiliated with the reporting entity by means of direct or indirect ownership. + 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 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Including the current and noncurrent portions, the carrying value of junior subordinated long-term debt owed to unconsolidated subsidiary trusts as of the balance sheet date. Such debt places a lender in a lien position behind debt having a higher priority of repayment in liquidation of the entity's assets and was initially scheduled to be repaid after one year or beyond the normal operating cycle if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future. + 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 210.5-02.19-26) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 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 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20, 22 -Article 5 + Details
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