Deferred Charges, Goodwill And Other Assets, Net (Narrative) (Details) - USD ($) |
9 Months Ended | |
|---|---|---|
Sep. 30, 2021 |
Dec. 31, 2020 |
|
| Credit Risk Contract [Member] | ||
| Derivative Instruments, Gain (Loss) [Line Items] | ||
| Net liability | $ 0 | |
| Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | ||
| Derivative Instruments, Gain (Loss) [Line Items] | ||
| Derivative notional amount | 0 | $ 0 |
| Estimated additional amount to be reclassified to interest expense | $ 0 |