Rendering

Component: (Network and Table)
Network
2409408 - Disclosure - EMPLOYEE BENEFIT PLANS - NET PENSION EXPENSE (Details)
(http://www.alaskaair.com/role/EmployeeBenefitPlansNetPensionExpenseDetails)
TableSchedule of Defined Benefit Plans Disclosures [Table]
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0000766421 (http://www.sec.gov/CIK)
Range [Axis]Range [Domain]
Defined Benefit Plans and Other Postretirement Benefit Plans [Axis]Qualified Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]Period [Axis]
2016-01-01 - 2016-12-31
2015-01-01 - 2015-12-31
2014-01-01 - 2014-12-31
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
 
 
 
Service cost
37,000,000  
41,000,000  
33,000,000  
Interest cost
73,000,000  
84,000,000  
81,000,000  
Expected return on assets
(108,000,000) 
(122,000,000) 
(117,000,000) 
Amortization of prior service cost
(1,000,000) 
(1,000,000) 
(1,000,000) 
Recognized actuarial loss
25,000,000  
26,000,000  
13,000,000  
Settlement expense (special item)
0  
14,000,000  
0  
Net pension expense
26,000,000  
 
42,000,000  
 
9,000,000  
 
Plan settlement
0  
62,000,000