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v3.20.4

Property, Plant, and Equipment, Net | 12 Months Ended
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Dec. 31, 2020
Property Plant And Equipment [Abstract] |
Property, Plant, and Equipment, Net | 8. Property, Plant, and Equipment, Net Property, plant, and equipment, net consist of the following:
|  | December 31, |
|  | 2020 |  |  | 2019 |
|  | (Dollars in millions) |
Land |  | $ | 7.5 |  |  | $ | 7.5 |
Software |  |  | 306.3 |  |  |  | 265.0 |
Machinery and equipment |  |  | 120.2 |  |  |  | 116.1 |
Buildings and improvements |  |  | 48.9 |  |  |  | 59.2 |
Total property, plant, and equipment |  |  | 482.9 |  |  |  | 447.8 |
Accumulated depreciation |  |  | (346.5 | ) |  |  | (319.5 | )
Property, plant, and equipment, net |  | $ | 136.4 |  |  | $ | 128.3 |
Depreciation expense related to property, plant, and equipment, net was $48.0 million, $40.9 million, and $38.1 million for the years ended December 31, 2020, 2019, and 2018, 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://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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