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Fair Value Measurements (Narrative) (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
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Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Fair value assets, Level 1 to Level 2 transfers amount | $ 0 | $ 0
Fair value assets, Level 2 to Level 1 transfers amount | 0 | 0
Fair Value Assets Level 1 To Level 3 Transfers Amount | 0 | 0
Fair Value Assets Level 3 To Level 1 Transfers Amount | 0 | 0
Fair Value Assets Level 2 To Level 3 Transfers Amount | 0 | 0
Fair Value Assets Level 3 To Level 2 Transfers Amount | $ 0 | $ 0

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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