Investments (Tables)
 12 Months Ended
Dec. 31, 2019
Investments, Debt and Equity Securities [Abstract]  
Summary of investments at fair value
Our investments accounted for at fair value are summarized in the following table:

Ownership InterestCarrying Value
(in millions)December 31, 2019December 31, 2018December 31, 2019December 31, 2018
Air France-KLM9 %9 %$418  $408  
China Eastern3 %3 %258  259  
Hanjin-KAL10 %— %205  —  
GOL— %9 %—  213  
Other investments218  210  
Total fair value investments$1,099  $1,090  


During 2019, we acquired 10% of the outstanding shares of Hanjin-KAL, the largest shareholder of Korean Air.
Summary of equity method investments
Ownership InterestCarrying Value
(in millions)December 31, 2019December 31, 2018December 31, 2019December 31, 2018
Grupo Aeroméxico (1)
51 %51 %$833  $897  
Virgin Atlantic (2)
49 %49 %375  383  
AirCo49 %49 %142  109  

(1)Grupo Aeroméxico's corporate bylaws (as authorized by the Mexican Foreign Investment Commission) limit our voting interest to a maximum of 49%. Therefore, we account for our investment under the equity method. Due to Aeroméxico's share repurchase program, our equity stake in Grupo Aeroméxico has increased to a non-controlling 51% interest.
(2)We have a non-controlling equity stake in Virgin Atlantic Limited, the parent company of Virgin Atlantic Airways, and similar non-controlling interests in certain affiliated Virgin Atlantic companies.