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Derivative Financial Instruments - Collateral Held and Pledged (Detail) - USD ($) $ in Millions | Sep. 30, 2016 | Dec. 31, 2015
--- | --- | ---
Collateral held: |  |
Cash (obligation to return cash collateral is recorded in short-term borrowings) | $ 425 | $ 759
Securities at fair value - corporate derivatives (not recorded in the financial statements) | 376 |
Securities at fair value - on-balance sheet securitization derivatives (not recorded in financial statements) | 394 | 301
Total collateral held | 1,195 | 1,060
Derivative asset at fair value including accrued interest | 1,062 | 896
Collateral pledged to others: |  |
Cash (right to receive return of cash collateral is recorded in investments) | 407 | 466
Total collateral pledged | 407 | 466
Derivative liability at fair value including accrued interest and premium receivable | $ 1,343 | $ 1,395

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- Definition Fair value of securities received as collateral against derivative assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=51825145&loc=SL20226013-175313 + Details
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- Definition Amount of obligation to return cash collateral under master netting arrangements that have not been offset against derivative assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=64837297&loc=d3e41678-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=51825145&loc=SL20226016-175313 + Details
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