[Line Items] for Accounting Policies [Table]

No definition available.

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- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=68055307&loc=d3e2420-110228

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

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- Definition

The net amount (to the extent disclosed within this portion of the income statement) by which an insurance settlement exceeds incremental costs incurred from the event causing an interruption of business, plus the insurance award for earnings lost from the event, such as a natural catastrophe, explosion or fire.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=64839914&loc=d3e16285-107787

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- Definition

Amount of interest capitalized during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Allowance for Funds Used during Construction
-URI http://asc.fasb.org/extlink&oid=6504829

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391

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- Definition

The amount of a reclassification adjustment made to prior period financial statement amounts.

+ References

No definition available.

+ Details

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- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

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- Definition

The carrying amounts of cash and cash equivalent items which are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. This element is for unclassified presentations; for classified presentations there is a separate and distinct element.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.1)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

The carrying amounts of cash and cash equivalent items which are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against short-term borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. For a classified balance sheet represents the current portion only (the noncurrent portion has a separate concept); there is a separate and distinct element for unclassified presentations.

+ References

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- Definition

Cash and equivalents whose use in whole or in part is restricted for the long-term, generally by contractual agreements or regulatory requirements.

+ References

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Basis of Presentation and Summary of Significant Accounting Policies (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Accounting Policies [Line Items]
Asset Impairment Charges	$ 0	$ 0	$ 0	$ 0
Gain on Business Interruption Insurance Recovery	9	0	17	0
Prior Period Reclassification Adjustment					$ 152
Current	210		210		216
Non-current	15		15		12
Total	225		225		228
Interest costs capitalized	5	$ 3	14	$ 12
Debt service
Accounting Policies [Line Items]
Current	39		39		28
Non-current	7		7		8
Total	46		46		36
Construction major maintenance
Accounting Policies [Line Items]
Current	34		34		50
Non-current	4		4		2
Total	38		38		52
Security project insurance
Accounting Policies [Line Items]
Current	134		134		136
Non-current	2		2		0
Total	136		136		136
Other
Accounting Policies [Line Items]
Current	3		3		2
Non-current	2		2		2
Total	$ 5		$ 5		$ 4
Geothermal properties, gross [Member] \| Minimum [Member]
Accounting Policies [Line Items]
Property, plant and equipment, estimated useful lives			13 years
Geothermal properties, gross [Member] \| Maximum [Member]
Accounting Policies [Line Items]
Property, plant and equipment, estimated useful lives			58 years
Property, plant and equipment, other types [Member] \| Minimum [Member]
Accounting Policies [Line Items]
Property, plant and equipment, estimated useful lives			3 years
Property, plant and equipment, other types [Member] \| Maximum [Member]
Accounting Policies [Line Items]
Property, plant and equipment, estimated useful lives			46 years
Building, machinery and equipment, gross [Member] \| Minimum [Member]
Accounting Policies [Line Items]
Property, plant and equipment, estimated useful lives			3 years
Building, machinery and equipment, gross [Member] \| Maximum [Member]
Accounting Policies [Line Items]
Property, plant and equipment, estimated useful lives			46 years