Summary of Significant Accounting Policies (Narrative) (Details) |
6 Months Ended | |
|---|---|---|
|
Jun. 30, 2025
USD ($)
segment
|
Dec. 31, 2024
USD ($)
|
|
| Summary Of Significant Accounting Policies [Line Items] | ||
| Number of reportable segments | segment | 1 | |
| Monthly Fee to Participate in our Portfolio Program | $ 599 | |
| Cash and Cash Equivalents [Member] | ||
| Summary Of Significant Accounting Policies [Line Items] | ||
| Uninsured cash and cash equivalents | 69,200,000 | $ 342,700,000 |
| Restricted Cash and Cash Equivalents [Member] | ||
| Summary Of Significant Accounting Policies [Line Items] | ||
| Uninsured cash and cash equivalents | $ 489,000,000.0 | $ 497,000,000.0 |