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Restrictions on Cash and Cash Equivalents	3 Months Ended
Restrictions on Cash and Cash Equivalents	Mar. 31, 2026
Cash and Cash Equivalents [Abstract]
Restrictions on Cash and Cash Equivalents	Restrictions on Cash and Cash Equivalents Cash collateral is posted by the Corporation with counterparties to secure derivatives and other contracts, which is included in "interest-bearing deposits with other banks" on the Consolidated Balance Sheets. The amounts of such collateral as of March 31, 2026 and December 31, 2025 were $19.1 million and $27.0 million, respectively.