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Debt And Other Credit Facilities (Senior Notes) (Details) - Notes Due 2028 - Senior Notes - USD ($) |  | 12 Months Ended
--- | --- | ---
Sep. 30, 2020 | Dec. 31, 2021
Debt Instrument [Line Items] |  |
Aggregate principal amount | $ 250,000,000 |
Interest rate, stated percentage | 4.75% |
Net proceeds from offering fee | $ 245,000,000 |
Interest rate, stated redeem percentage |  | 35.00%
Prior to September 30, 2023 |  |
Debt Instrument [Line Items] |  |
Redemption price, percentage |  | 100.00%
On or after September 30, 2023 |  |
Debt Instrument [Line Items] |  |
Redemption price, percentage |  | 104.75%
Change of control |  |
Debt Instrument [Line Items] |  |
Redemption price, percentage |  | 101.00%

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