XML 71 R54.htm IDEA: XBRL DOCUMENT v3.20.4

Long-lived Assets - Impairments, Held for Sale or Disposals (Tables)

12 Months Ended

Dec. 31, 2020

Discontinued Operations and Disposal Groups [Abstract]

Long-lived Assets - Impairments of Assets Held and Used

Changes to Materials & Construction fixed assets and intangible assets for the year ended December 31, 2018 including such impairments were as follows (in millions):

Intangible Assets			Materials & Construction						Fixed Assets			Materials & Construction
						Balance, January 1, 2018									$	16.5					Balance, January 1, 2018			$	139.5
Additions to intangible assets			—						Additions to fixed assets			11.1
Amortization			(0.9)						Depreciation			(11.2)
Intangible impairment			(7.0)						Fixed asset impairment			(33.6)
Balance, December 31, 2018			$	8.6					Balance, December 31, 2018			$	105.8

X

- Definition

Tabular disclosure for impairment of long-lived assets held and used by an entity which includes a description of the impaired long-lived asset and facts and circumstances leading to the impairment, aggregate amount of the impairment loss and where the loss is located in the income statement, method(s) for determining fair value, and the segment in which the impaired long-lived asset is reported.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=109226691&loc=d3e2921-110230

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 5.CC)
-URI http://asc.fasb.org/extlink&oid=27011434&loc=d3e125687-122742

+ Details

Name:	us-gaap_DetailsOfImpairmentOfLongLivedAssetsHeldAndUsedByAssetTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_DiscontinuedOperationsAndDisposalGroupsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration