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Derivatives and Hedging Activities - Fair Value of Derivative Assets by Type (Details) - USD ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Credit Derivatives [Line Items] |  |
Derivative assets before collateral | $ 987 | $ 564
Less: Related collateral | 207 | 33
Total derivative assets | 780 | 531
Interest Rate [Member] |  |
Credit Derivatives [Line Items] |  |
Derivative assets before collateral | 848 | 308
Foreign Exchange Contract [Member] |  |
Credit Derivatives [Line Items] |  |
Derivative assets before collateral | 30 | 60
Commodity [Member] |  |
Credit Derivatives [Line Items] |  |
Derivative assets before collateral | 95 | 187
Credit [Member] |  |
Credit Derivatives [Line Items] |  |
Derivative assets before collateral | 0 | 0
Other [Member] |  |
Credit Derivatives [Line Items] |  |
Derivative assets before collateral | $ 14 | $ 9

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- Definition Derivative assets before cash collateral. + References No definition available. + Details
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- Definition Fair value, after the 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 not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226008-175313 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=118260190&loc=d3e13433-108611 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 + Details
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