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Derivatives and Hedging Activities (Details Textuals) - USD ($) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019 | Dec. 31, 2019
Derivative [Line Items] |  |  |  |  |
Derivatives subject to master netting arrangements not offset | $ 0 |  | $ 0 |  | $ 0
Margin on interest rate swaps | 61,000,000 |  | 61,000,000 |  | 47,000,000
Carrying values of hedged liabilities | 19,600,000,000 |  | 19,600,000,000 |  | 22,700,000,000
Cumulative amount of fair value hedging adjustment | 810,000,000 |  | 810,000,000 |  | 217,000,000
Net increase (reduction) in interest expense on long term debt and other | (81,000,000) | $ 36,000,000 | (102,000,000) | $ 74,000,000 |
Gain (loss) on net investment hedges recorded in AOCI, net of taxes | (339,000,000) | 87,000,000 | 393,000,000 | (75,000,000) |
Gain (loss) on net investment hedges reclassification out of AOCI, net of taxes | 1,000,000 | 0 | 1,000,000 | 0 |
Other Expense [Member] |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Gain (loss) in changes in fair value of derivatives not designated as hedges | (2,000,000) | 23,000,000 | 18,000,000 | 27,000,000 |
Fair Value Hedging [Member] | Fixed-Rate Debt Obligations [Member] |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Fixed-rate debt obligations designated in fair value hedging relationships | 18,800,000,000 |  | 18,800,000,000 |  | 22,600,000,000
Net Investment Hedges [Member] |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Notional amounts of derivatives | 9,900,000,000 |  | 9,900,000,000 |  | $ 9,800,000,000
Accumulated Other Comprehensive Loss [Member] |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Gain (loss) on net investment hedges recorded in AOCI, net of taxes | $ (339,000,000) | $ 87,000,000 | $ 393,000,000 | $ (75,000,000) |

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- Definition Nominal or face amount used to calculate payments on the derivative liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5579245-113959 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5580258-113959 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5579245-113959 + Details
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