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Restrictions on Cash and Cash Equivalents | 6 Months Ended
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Jun. 30, 2019
Cash and Cash Equivalents [Abstract] |
Restrictions on Cash and Cash Equivalents | Restrictions on Cash and Cash Equivalents The Corporation’s subsidiary banks are required to maintain reserves against their deposit liabilities. These reserves are in the form of cash and balances with the Federal Reserve Bank ("FRB"), included in "interest-bearing deposits with other banks." The amounts of such reserves as of June 30, 2019 and December 31, 2018 were $186.6 million and $156.8 million, respectively. In addition, collateral is posted by the Corporation with counterparties to secure derivative contracts and other contracts, which are included in "interest-bearing deposits with other banks." The amounts of such collateral as of June 30, 2019 and December 31, 2018 were $173.1 million and $45.1 million, respectively.

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- Definition Tabular disclosure of cash and cash equivalents restricted as to withdrawal or usage. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(1)(a)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=98513485&loc=SL98516268-108586 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(2)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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