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Other Assets (Derivative Instruments Narrative) (Details ) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 USD ($) | Sep. 30, 2020 USD ($)
Derivative [Line Items] |  |
Derivative, terminated amount | $ 4,100,000,000 | $ 4,100,000,000
Loss on discontinuation of cash flow hedge due to forecasted transaction probable of not occurring | $ 7,200,000 |
Swap | Hedging |  |
Derivative [Line Items] |  |
Reclassification of hedge gain (loss) from AOCI |  | (49,900,000)
Loss on derivative |  | $ 0

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