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Fair Value (Tables)
9 Months Ended
Sep. 30, 2020
Fair Value Disclosures [Abstract]  
Fair value, by balance sheet grouping
The following is a listing of our assets and liabilities required to be measured at fair value on a recurring basis and where they are classified within the fair value hierarchy as of September 30, 2020 and December 31, 2019 (in millions):
 
September 30, 2020
 
Level 1
 
Level 2
 
Level 3
 
Total
Assets
 
 
 
 
 
 
 
Cash equivalents
$
1,330

 
$
160

 
$

 
$
1,490

Available-for-sale investment securities

 
569

 

 
569

 
December 31, 2019
 
Level 1
 
Level 2
 
Level 3
 
Total
Assets
 
 
 
 
 
 
 
Cash equivalents
$
611

 
$
30

 
$

 
$
641

Available-for-sale investment securities

 
351

 

 
351

Aircraft fuel derivatives

 
8

 

 
8

Refer to Note 4 to our condensed consolidated financial statements for fair value information related to our outstanding debt obligations as of September 30, 2020 and December 31, 2019.