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Premises and Equipment | 12 Months Ended
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Dec. 31, 2023
Property, Plant and Equipment [Abstract] |
Premises and Equipment | PREMISES AND EQUIPMENT Premises and equipment and related accumulated depreciation are as follows:
December 31, | 2023 |  | 2022
Land | $ | 87.7 |  |  | $ | 86.7 |
Buildings and improvements | 474.2 |  |  | 469.2 |
Furniture and equipment | 111.6 |  |  | 111.0 |
Total premises and equipment | 673.5 |  |  | 666.9 |
Less accumulated depreciation | (229.2) |  |  | (222.2) |
Premises and equipment, net | $ | 444.3 |  |  | $ | 444.7 |
Depreciation expense was $34.3 million, $35.1 million, and $28.0 million for the years ended December 31, 2023, 2022, and 2021, respectively. The Parent Company and a FIB branch office lease premises from an affiliated entity. See Note —Commitments and Contingencies.

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- Definition The entire disclosure for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 360 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//360/tableOfContent Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 6 -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480321/958-360-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480321/958-360-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 7 -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480321/958-360-50-7 + Details
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