Taxonomy Viewer

Name	SiteContingencyFactorsChangingEstimate
Namespace	http://fasb.org/us-gaap/2020-01-31
Prefix	us-gaap
Data type	xbrli:stringItemType
Period type	duration
Substitution Group	xbrli:item
Balance	None
Nillable	True
Abstract	False

Text	Lang	Role	Container role
Site Contingency, Factors Changing Estimate	en-US	http://www.xbrl.org/2003/role/label	http://www.xbrl.org/2003/role/link
Factors that may cause a change in an estimate of a possible loss exposure that exceeds the amount accrued for the loss contingency, a recognized asset for third-party recoveries, an estimated loss contingency that has not been accrued, or a disclosed gain contingency for an individual site.	en-US	http://www.xbrl.org/2003/role/documentation	http://www.xbrl.org/2003/role/link

Name	Value	Role
Publisher	FASB	http://fasb.org/us-gaap/role/ref/legacyRef
Name	Accounting Standards Codification	http://fasb.org/us-gaap/role/ref/legacyRef
Topic	410	http://fasb.org/us-gaap/role/ref/legacyRef
SubTopic	30	http://fasb.org/us-gaap/role/ref/legacyRef
Section	50	http://fasb.org/us-gaap/role/ref/legacyRef
Paragraph	10	http://fasb.org/us-gaap/role/ref/legacyRef
Subparagraph	(d)	http://fasb.org/us-gaap/role/ref/legacyRef
URI	http://asc.fasb.org/extlink&oid=6393242&loc=d3e13237-110859	http://fasb.org/us-gaap/role/ref/legacyRef

	Name	Relation Type	Role
	Site Contingency [Line Items] `us-gaap:SiteContingencyLineItems`	parent-child	http://fasb.org/us-gaap/role/disclosure/EnvironmentalRemediationObligations
	Site Contingency [Line Items] `us-gaap:SiteContingencyLineItems`	domain-member	http://fasb.org/us-gaap/role/disclosure/EnvironmentalRemediationObligationsSiteContingencyTable