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Short-Term Borrowings (Details) - USD ($) $ in Millions | 6 Months Ended |
--- | --- | ---
Jun. 30, 2022 | Dec. 31, 2021
Short-Term Borrowings (Details) [Line Items] |  |
Purchases of federal funds | $ 41.0 | $ 5.0
Retail Repurchase Agreements [Member] |  |
Short-Term Borrowings (Details) [Line Items] |  |
Mortgage-backed securities maturity, basis of allocation description | These securities have various maturity dates from 2024 through 2061. |
Total secured securities | $ 27.5 |
Short-term borrowings mature, description | The REPO agreements mature within one month. |

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