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Property, Plant and Equipment, Net | 12 Months Ended
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Dec. 31, 2021
Property, Plant and Equipment [Abstract] |
Property, Plant and Equipment, Net | PROPERTY, PLANT AND EQUIPMENT, NET
| December 31,
(in millions) | 2021 |  | 2020
Leasehold improvements | 38.0 |  |  | 35.7 |
Equipment | 112.4 |  |  | 117.9 |
Property, plant and equipment, gross | 150.4 |  |  | 153.6 |
Less accumulated depreciation | (106.9) |  |  | (112.9) |
Property, plant and equipment, net | $ | 43.5 |  |  | $ | 40.7 |
During the year ended December 31, 2021, the Company completed the sales of Myriad RBM, Inc. and the Myriad Autoimmune business, which resulted in the disposition of $3.1 million of property, plant and equipment. See Note 16 for additional information regarding these divestitures.
| Year Ended December 31, |  | Six-month Transition Period Ended December 31, |  | Years Ended June 30,
(in millions) | 2021 |  | 2020 |  | 2020 |  | 2019
Depreciation expense | $ | 12.1 |  |  | $ | 5.0 |  |  | $ | 11.0 |  |  | $ | 13.7 |

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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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