- DefinitionRate applied to the undiscounted amount of environmental loss contingencies to arrive at the present value recorded as of the balance sheet date.
Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
 -Publisher FASB
 -Name Accounting Standards Codification
 -Topic 410
 -SubTopic 30
 -Section 50
 -Paragraph 7
 -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13207-110859
Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
 -Publisher FASB
 -Name Accounting Standards Codification
 -Topic 450
 -SubTopic 20
 -Section S99
 -Paragraph 1
 -Subparagraph (SAB Topic 5.Y.Q1)
 -URI http://asc.fasb.org/extlink&oid=27011672&loc=d3e149879-122751
| Name: | us-gaap_AccrualForEnvironmentalLossContingenciesDiscountRate | 
| Namespace Prefix: | us-gaap_ | 
| Data Type: | dtr-types:percentItemType | 
| Balance Type: | na | 
| Period Type: | instant |