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Property, Plant, and Equipment | 12 Months Ended
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Dec. 31, 2023
Property, Plant and Equipment [Abstract] |
Premises and Equipment | PREMISES AND EQUIPMENT A summary of premises and equipment by major category follows:
(in millions) |  |  |
December 31 | 2023 |  | 2022
Land | $ | 81 |  |  | $ | 81 |
Buildings and improvements | 768 |  |  | 737 |
Furniture and equipment | 536 |  |  | 518 |
Total cost | 1,385 |  |  | 1,336 |
Less: Accumulated depreciation and amortization | (940) |  |  | (936) |
Net book value | $ | 445 |  |  | $ | 400 |
The Corporation conducts a portion of its business from leased facilities and leases certain equipment. Refer to Note 25 for more information on leased facilities and equipment. Other assets included unamortized capitalized software costs of $106 million and $83 million at December 31, 2023 and 2022, respectively. Noninterest expenses included software amortization expense of $26 million, $25 million and $33 million for the years ending December 31, 2023, 2022 and 2021, respectively.

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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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