Taxonomy Viewer

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

Text	Lang	Role	Container role
Emission Credits or Allowances, Policy [Policy Text Block]	en-US	http://www.xbrl.org/2003/role/label	http://www.xbrl.org/2003/role/link
Disclosure of accounting policy for emission credits or allowances. Such accounting policy has generally been based on an inventory or intangible asset model.	en-US	http://www.xbrl.org/2003/role/documentation	http://www.xbrl.org/2003/role/link

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Name	Accounting Standards Codification	http://fasb.org/us-gaap/role/ref/legacyRef
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