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INVESTMENTS - Pretax Other-Than-Temporary Impairment Losses by Investment Category (Detail) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015
Gain (Loss) on Investments [Line Items] |  |  |  |  |
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net | [1] | $ 22 | $ 137 | $ 69 | $ 143
Change in intent impairment |  |  |  |  |
Gain (Loss) on Investments [Line Items] |  |  |  |  |
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net |  | 22 | 6 | 69 | 12
Credit related impairment |  |  |  |  |
Gain (Loss) on Investments [Line Items] |  |  |  |  |
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net |  |  | 131 |  | 131
Perpetual securities |  |  |  |  |
Gain (Loss) on Investments [Line Items] |  |  |  |  |
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net |  | 0 | 0 | 2 | 0
Corporate bonds |  |  |  |  |
Gain (Loss) on Investments [Line Items] |  |  |  |  |
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net |  | 1 | 5 | 22 | 7
Banks/financial institutions |  |  |  |  |
Gain (Loss) on Investments [Line Items] |  |  |  |  |
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net |  | 0 | 131 | 0 | 135
Equity securities |  |  |  |  |
Gain (Loss) on Investments [Line Items] |  |  |  |  |
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net |  | $ 21 | $ 1 | $ 45 | $ 1
[1] | Includes $22 and $6 for the three-month periods and $69 and $12 for the nine-month periods ended September 30, 2016 and 2015, respectively, from change in intent to sell securities or change in intent to hold securities until recovery; and $131 for the three- and nine-month periods ended September 30, 2015, for credit-related impairments

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- Definition The amount of other than temporary impairment (OTTI) losses on equity securities, OTTI related to credit losses on debt securities, and OTTI losses on debt securities when the entity intends to sell the securities or it is more likely than not that the entity will be required to sell the securities before recovery of its amortized cost basis. Additionally, this item includes OTTI losses recognized during the period on investments accounted for under the cost method of accounting. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 8B -URI http://asc.fasb.org/extlink&oid=73527792&loc=SL6284393-111563 + 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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