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Fair Values (Details) - USD ($) $ in Millions | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Investment securities: |  |
Equity securities | $ 49 | $ 49
Debt securities and other | 3,108 | 3,710
Derivative assets | 765 | 544
Total assets | 3,922 | 4,303
Liabilities |  |
Derivative liabilities | 280 | 201
Total liabilities | 280 | 201
Level 1 [Member] |  |
Investment securities: |  |
Equity securities | 1 | 1
Debt securities and other | 460 | 409
Derivative assets | 0 | 0
Total assets | 461 | 410
Liabilities |  |
Derivative liabilities | 0 | 0
Total liabilities | 0 | 0
Level 2 [Member] |  |
Investment securities: |  |
Equity securities | 48 | 48
Debt securities and other | 2,648 | 3,301
Derivative assets | 765 | 544
Total assets | 3,461 | 3,893
Liabilities |  |
Derivative liabilities | 280 | 201
Total liabilities | 280 | 201
Level 3 [Member] |  |
Investment securities: |  |
Equity securities | 0 | 0
Debt securities and other | 0 | 0
Derivative assets | 0 | 0
Total assets | 0 | 0
Liabilities |  |
Derivative liabilities | 0 | 0
Total liabilities | $ 0 | $ 0

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- Definition Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Includes assets not subject to a master netting arrangement. + References No definition available. + Details
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- Definition Amount of equity securities categorized neither as held-to-maturity nor as 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=65884222&loc=d3e22054-111558 Reference 2: 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=66010992&loc=d3e26610-111562 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6957658&loc=d3e62557-112803 + Details
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