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PROPERTY, EQUIPMENT AND SOFTWARE | 12 Months Ended
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Dec. 31, 2021
Property, Plant and Equipment [Abstract] |
PROPERTY, EQUIPMENT AND SOFTWARE | PROPERTY, EQUIPMENT AND SOFTWARE. Property, equipment and software at December 31 consists of:
(in millions) | 2021 |  | 2020
Computer and communications software and equipment | $ | 1,293.5 |  |  | $ | 1,113.1 |
Buildings and improvements | 472.0 |  |  | 457.5 |
Leasehold improvements | 196.4 |  |  | 169.2 |
Furniture and other equipment | 205.6 |  |  | 193.3 |
Land | 25.7 |  |  | 37.2 |
| 2,193.2 |  |  | 1,970.3 |
Less accumulated depreciation and amortization | 1,457.0 |  |  | 1,274.9 |
Total | $ | 736.2 |  |  | $ | 695.4 |
Compensation and related costs attributable to the development of computer software for internal use, totaling $137.6 million in 2021, $125.9 million in 2020, and $95.5 million in 2019, have been capitalized.

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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://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=120429125&loc=d3e99893-112916 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -URI http://asc.fasb.org/topic&trid=2155823 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=120429125&loc=SL120174063-112916 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120429125&loc=d3e99779-112916 + Details
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