Amount of expense for newly incurred environmental loss contingencies. Includes, but is not limited to, remediation expense and interest accretion.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 5.Y.Q2)
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- Definition

Amount of expense (reversal of expense) which increases (decreases) the accrual for environmental loss contingencies from revisions in estimates to existing obligations. Excludes changes related to business acquisitions, divestitures, or currency movement.

+ References

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- Definition

Amount of costs recognized in the balance sheet for known or estimated future costs arising from requirements to perform activities to remediate one or more sites.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 30
-Section 25
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=39739230&loc=d3e11660-110855

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Contingencies and Commitments (Unaudited) Environmental Obligation (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2017	Jun. 30, 2018
Cyprus Tohono [Member]
Environmental Exit Cost [Line Items]
Environmental Costs Recognized, Capitalized			$ 44
Uranium Mining Sites on Tribal Land [Member]
Environmental Exit Cost [Line Items]
Accrual for Environmental Loss Contingencies, Revision in Estimates		$ (41)
Borough of Carteret [Member]
Environmental Exit Cost [Line Items]
Accrual for Environmental Loss Contingencies, Charges to Expense for New Losses	$ 59