Derivatives and Risk Management - Narrative (Details) $ in Millions	3 Months Ended
Mar. 31, 2020 USD ($)
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Cash generated from unwinding of interest rate swap contracts	$ 100

Proceeds From Settlement Of Interest Rate Swap Contracts

No definition available.

Name:	dal_ProceedsFromSettlementOfInterestRateSwapContracts
Namespace Prefix:	dal_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration