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Derivative Instruments (Narrative) (Details) - USD ($) | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2022 | Sep. 30, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Derivative [Line Items] |  |  |  |  |
Derivative, Notional Amount |  | $ 3,179,428,000 | $ 3,179,428,000 | $ 2,916,181,000 |
Derivative Asset | [1] | 38,460,000 | 38,460,000 | 41,842,000 |
Interest Rate Floor [Member] |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Derivative, Notional Amount |  | 500,000,000 | 500,000,000 | 0 |
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months |  |  | 2,300,000 |  |
Premium paid for interest rate floor |  | $ 16,800,000 | 16,800,000 |  |
Derivative, Inception Date |  | Jan. 01, 2024 |  |  |
Derivative, Maturity Date |  | Jan. 01, 2030 |  |  |
Unrealized gain (loss) on interest rate cash flow hedges, net of tax, amount recorded in accumulated other comprehensive income |  |  | 3,500,000 |  |
Monetized Interest Rate Floor [Member] |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Derivative, Notional Amount |  |  |  |  | $ 1,500,000,000
Derivative Asset |  |  |  |  | $ 163,200,000
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred |  |  | $ 81,000,000 |  |
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimate of Time to Transfer |  |  | 4 years 2 months 12 days |  |
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months |  |  | $ 23,900,000 |  |
Interest rate swaps |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Derivative, Notional Amount |  | $ 1,980,368,000 | 1,980,368,000 | 2,229,419,000 |
Variation Margin Impact to Positive Fair Values of Cleared Swaps |  | $ (30,700,000) | $ (30,700,000) | (587,000) |
Variation Margin Impact to Negative Fair Values of Cleared Swaps |  |  |  | $ (29,700,000) |
[1] | * The fair value of each class of derivative is shown in Note 11.

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