XML 37 R18.htm IDEA: XBRL DOCUMENT
v3.20.4

Property, Plant and Equipment | 12 Months Ended
--- | ---
Dec. 31, 2020
Property, Plant and Equipment [Abstract] |
Property, Plant and Equipment | Note 11. Property, Plant and Equipment The major categories of property, plant and equipment and accumulated depreciation and depletion are presented below:
|  | December 31, |
(millions of dollars) |  | 2020 |  |  | 2019 |
Mineral rights and reserves |  | $ | 565.8 |  |  | $ | 571.0 |
Land |  |  | 50.9 |  |  |  | 47.5 |
Buildings |  |  | 225.6 |  |  |  | 218.1 |
Machinery and equipment |  |  | 1,254.3 |  |  |  | 1,241.2 |
Furniture and fixtures and other |  |  | 138.9 |  |  |  | 144.1 |
Construction in progress |  |  | 41.4 |  |  |  | 35.1 |
|  |  | 2,276.9 |  |  |  | 2,257.0 |
Less: accumulated depreciation and depletion |  |  | (1,237.3 | ) |  |  | (1,204.2 | )
Property, plant and equipment, net |  | $ | 1,039.6 |  |  | $ | 1,052.8 |
In the third quarter of 2020, the Company acquired the assets of a mining and hauling company in the western United States for $9.2 million to support our bentonite clay mining operations. Depreciation and depletion expense for the years ended December 31, 2020, 2019 and 2018 was $77.9 million, $82.1 million and $80.7 million, respectively.

X
- References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration