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Property and Equipment (Tables) | 12 Months Ended
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Jan. 02, 2021
Property, Plant and Equipment [Abstract] |
Schedule of Property and Equipment | Property and equipment (which are carried at cost) as of 2020 and 2019 year end are as follows:
(Amounts in millions) |  | 2020 |  | 2019
Land |  | $ | 34.0 |  |  | $ | 31.9 |
Buildings and improvements |  | 432.0 |  |  | 405.1 |
Machinery, equipment and computer software |  | 1,033.4 |  |  | 988.0 |
Property and equipment – gross |  | 1,499.4 |  |  | 1,425.0 |
Accumulated depreciation and amortization |  | (973.2) |  |  | (903.5) |
Property and equipment – net |  | $ | 526.2 |  |  | $ | 521.5 |
Summary of Estimated Service Lives of Property and Equipment | The estimated service lives of property and equipment are principally as follows:
Buildings and improvements |  | 3 to 50 years
Machinery, equipment and computer software |  | 2 to 15 years

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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(13)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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