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Derivative Financial Instruments and Hedging Activities (Schedule of Terminated Cash Flows) (Details) - Accumulated Net Gain (Loss) from Derivative Instruments Designated as Cash Flow Hedges [Member] - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
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Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Accumulated Other Comprehensive Income related to discontinued cash flow hedges, before tax | $ 624 | $ 279 | $ 700 | $ 121
Other Comprehensive Income (loss), Unrealized Gain (loss) on terminated cash flow hedges arising during the period, before tax | 0 | 249 | 0 | 415
Other Comprehensive Income (loss), Reclassification Adjustment from AOCI on terminated cash flow hedges, before tax | (76) | (34) | (152) | (42)
Accumulated Other Comprehensive Income related to discontinued cash flow hedges, before tax | $ 548 | $ 494 | $ 548 | $ 494

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