Secured Debt, Number of Aircrafts Securing Debt Financing

No definition available.

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Namespace Prefix:	alk_
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Balance Type:	na
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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.

+ Details

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- Definition

Amount of the hedged item as of the balance sheet date related to the derivative. For example, the hedged balance on a debt instrument.

+ References

No definition available.

+ Details

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- Definition

The number of derivative instruments of a particular group held by the entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5579245-113959

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

The cash inflow from amounts received from issuance of long-term debt that is wholly or partially secured by collateral. Excludes proceeds from tax exempt secured debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3255-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3291-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The minimum number of units that must be purchased, in connection with an unconditional purchase obligation that has not been recognized for financial reporting purposes.

+ References

No definition available.

+ Details

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Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

- Details

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- Details

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- Details

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- Details

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- Details

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LONG-TERM DEBT LONG-TERM DEBT - SECURED DEBT (Details) $ in Millions	1 Months Ended	3 Months Ended	9 Months Ended
	Nov. 01, 2016 USD ($) aircraft	Sep. 30, 2016 USD ($) agreement aircraft	Sep. 30, 2016 USD ($) agreement aircraft	Sep. 30, 2015 USD ($)	Oct. 11, 2016 aircraft
Debt Instrument [Line Items]
Secured Debt, Number of Aircrafts Securing Debt Financing		53	53
Repayments of Long-term Debt \| $			$ 93	$ 93
Secured by aircraft [Member]
Debt Instrument [Line Items]
Proceeds from Issuance of Secured Debt \| $		$ 1,500
Interest rate swaps agreements [Member]
Debt Instrument [Line Items]
Derivative, Amount of Hedged Item \| $		$ 300	$ 300
Derivative, Number of Instruments Held \| agreement		2	2
Subsequent Event [Member] \| Secured by aircraft [Member]
Debt Instrument [Line Items]
Proceeds from Issuance of Secured Debt \| $	$ 100
Boeing, 737-900ER [Member]
Debt Instrument [Line Items]
Secured Debt, Number of Aircrafts Securing Debt Financing		34	34
Boeing, 737-900ER [Member] \| Subsequent Event [Member]
Debt Instrument [Line Items]
Secured Debt, Number of Aircrafts Securing Debt Financing	3
Committed to Purchase (in Aircraft)					19
B-737-800 [Member]
Debt Instrument [Line Items]
Secured Debt, Number of Aircrafts Securing Debt Financing		19	19