Amount Borrowed to Acquire Long-Term Fixed Rate Electric Capacity Contract

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- Definition

Amount Of First Mortgage Bonds That Could Be Issued

+ References

No definition available.

+ Details

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- Definition

Amount of First Mortgage Bonds that Could be Issued, Percent

+ References

No definition available.

+ Details

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- Definition

The amount of cash, securities, or other assets held by a third-party trustee pursuant to the terms of an agreement which assets are available to be used by beneficiaries to that agreement only within the specific terms thereof and which agreement is expected to terminate more than one year from the balance sheet date (or operating cycle, if longer) at which time the assets held-in-trust will be released or forfeited.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(b))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ 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 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

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.

+ References

No definition available.

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ 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 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Long-Term Debt and Capital Leases (Narrative) (Details) - USD ($) $ in Millions	Dec. 31, 1998	Dec. 31, 2015	Dec. 31, 2014	Nov. 30, 2014	Apr. 30, 2014	Dec. 31, 2013
Debt Instrument [Line Items]
Amount Borrowed to Acquire Long-Term Fixed Rate Electric Capacity Contract	$ 145.0
Debt Instrument, Interest Rate, Stated Percentage	8.45%	1.29%	1.11%			1.11%
Assets Held-in-trust, Noncurrent			$ 1.6
Avista Utilities [Member] \| First Mortgage [Member]
Debt Instrument [Line Items]
Amount of First Mortgage Bonds that Could be Issued, Percent		66.66%
Amount Of First Mortgage Bonds That Could Be Issued		$ 1,100.0
Alaska Electric Light & Power [Member] \| First Mortgage [Member]
Debt Instrument [Line Items]
Amount of First Mortgage Bonds that Could be Issued, Percent		66.66%
Amount Of First Mortgage Bonds That Could Be Issued		$ 0.0
Line of Credit [Member] \| Avista Utilities [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity					$ 400.0
Line of Credit [Member] \| Alaska Electric Light & Power [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity				$ 25.0