Impact of the COVID-19 Pandemic (Tables)
 9 Months Ended
Sep. 30, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Schedule goodwill and intangibles carrying value and fair value Our December 2019 quarter quantitative impairment tests of goodwill and intangibles concluded that there was no indication of impairment as the fair value exceeded our carrying value:
Carrying Value atFair Value Excess at 2019 Testing Date
(in millions)September 30, 2020December 31, 2019
Goodwill(1)
$9,753 $9,781 
234%
International routes and slots2,583 2,583 
15% to 29%
Airline alliances(2)
1,863 1,005 
67% to 576%
Delta tradename850 850 
185%
Domestic slots622 622 
61% to 181%
Total$15,671 $14,841 
(1) The reduction in goodwill relates to the combination of Delta Private Jets with Wheels Up in the March 2020 quarter. See Note 5, "Investments," for more information on this transaction.
(2) As part of our strategic alliance with and investment in LATAM Airlines Group S.A. ("LATAM"), we have recorded an alliance-related indefinite-lived intangible asset of $1.2 billion, which was not reflected in the 2019 quantitative impairment assessment. See Note 5, "Investments," for more information on this transaction.
Schedule of aircraft retirement decisions
The following table shows the details of our 2020 aircraft retirement decisions:

Fleet TypeNumber of AircraftEstimated Final Retirement During the Quarter EndedImpairment-Related Charge (in millions)Quarter Decision was Made
71791 December 2025$950 September 2020
767-300ER49 December 2025905 September 2020
CRJ-200 (1)
125 December 2023320 September 2020
77718 December 20201,440 June 2020
MD-9026 June 2020330 June 2020
737-70010 September 2020220 June 2020
767-300ER7 June 2020180 June 2020
A32010 June 202060 June 2020
MD-8847 June 202022 March 2020
Total383 $4,427 

(1)Certain of the CRJ-200 aircraft scheduled to be retired by the December 2023 quarter are operated for us by SkyWest Airlines under a revenue proration agreement.