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Derivatives and Hedging Activities (Details Textuals) - USD ($) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020 | Dec. 31, 2020
Derivative [Line Items] |  |  |  |  |
Margin on interest rate swaps | $ 23,000,000 |  | $ 23,000,000 |  | $ 34,000,000
Carrying values of hedged liabilities | 13,200,000,000 |  | 13,200,000,000 |  | 16,400,000,000
Cumulative amount of fair value hedging adjustment | 424,000,000 |  | 424,000,000 |  | 622,000,000
Net decrease in interest expense on long term debt and other | 63,000,000 | $ 81,000,000 | 136,000,000 | $ (102,000,000) |
Not Designated as Hedging Instrument |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Derivative notional amount | 14,400,000,000 |  | 14,400,000,000 |  | 14,400,000,000
Other Expense |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
(Gain) loss on changes in fair value of derivatives and related underlying foreign currency exposures | 9,000,000 | 2,000,000 | 14,000,000 | (18,000,000) |
Fair Value Hedging | Fixed-Rate Debt Obligations |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Fixed-rate debt obligations designated in fair value hedging relationships | 12,900,000,000 |  | 12,900,000,000 |  | 15,800,000,000
Net Investment Hedges |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Notional amounts of derivatives | 10,800,000,000 |  | 10,800,000,000 |  | $ 10,500,000,000
Net hedges of investments in foreign operations | 108,000,000 | 339,000,000 | 102,000,000 | (393,000,000) |
Reclassifications out of AOCI | $ 0 | $ 0 | $ 0 | $ 0 |

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- Definition Amount posted as initial margin for centrally cleared interest rate swaps which is not netted against the derivative balances. + References No definition available. + Details
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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=125515794&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=125515794&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=125515794&loc=SL5579245-113959 + Details
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