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Goodwill and Intangible Assets (Tables)
 12 Months Ended
Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule goodwill and indefinite-lived intangible assets by category Our December 2020 quarter quantitative impairment tests of goodwill and intangibles concluded that there was no indication of impairment as the fair value exceeded our carrying value:
Goodwill and indefinite-lived intangible assets by category
Carrying Value atExcess Fair Value at 2020 Testing Date
(in millions)December 31, 2020December 31, 2019
Goodwill (1)
$9,753 $9,781 
>100%
International routes and slots2,583 2,583 
10% to 30%
Airline alliances (2)
1,863 1,005 
20% to >100%
Delta tradename850 850 
>100%
Domestic slots622 622 
60% to >100%
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, we have recorded an alliance-related indefinite-lived intangible asset of $1.2 billion, which was not reflected in the December 31, 2019 balance.
Schedule of definite-lived intangible assets by category
Definite-Lived Intangible Assets

Definite-lived intangible assets by category
December 31, 2020December 31, 2019
(in millions)Gross
Carrying
Value		 
Accumulated
Amortization		Gross
Carrying
Value		 
Accumulated
Amortization
Marketing agreements$730 $(696)$730 $(692)
Contracts193 (134)193 (128)
Other53 (53)53 (53)
Total$976 $(883)$976 $(873)