Commitments And Contingencies [Line Items]

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- Definition

Settlement Agreement, Amount Awarded to Other Party

+ References

No definition available.

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- Definition

Total anticipated costs associated with remediation, site restoration, postclosure, monitoring commitments, or other exit costs that may occur on the sale, disposal, or abandonment of a particular property resulting from unanticipated contamination of the assets.

+ References

Reference 1: 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.Q4)
-URI http://asc.fasb.org/extlink&oid=27011672&loc=d3e149879-122751

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- Definition

Carrying amount as of the balance sheet date of the liability for remediation, site restoration, postclosure, monitoring commitments, or other exit costs associated with the sale, disposal or abandonment of a particular property resulting from unanticipated contamination of the assets.

+ References

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- Definition

The proportionate share of interest (percent) in a jointly owned utility plant.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 980
-SubTopic 360
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 10.C)
-URI http://asc.fasb.org/extlink&oid=115995737&loc=d3e659983-123033

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COMMITMENTS AND CONTINGENCIES (Contingencies) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Aug. 30, 2019	Dec. 31, 2018
San Juan Unit 1
Commitments And Contingencies [Line Items]
Percentage of ownership (in percentage)	50.00%	50.00%
San Juan and Four Corners
Commitments And Contingencies [Line Items]
Reclamation costs	$ 57
San Juan and Four Corners \| Other Liabilities
Commitments And Contingencies [Line Items]
Reclamation costs accrued	36		$ 31
Navajo
Commitments And Contingencies [Line Items]
Reclamation costs	17
Reclamation costs accrued	0
Navajo \| Other Liabilities
Commitments And Contingencies [Line Items]
Reclamation costs accrued			$ 5
Settlement paid	$ 8