Consolidated Statements of Stockholders' Equity (Unaudited) (Parenthetical) - $ / shares	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Statement of Stockholders' Equity [Abstract]
Treasury shares withheld for payment of taxes, weighted average price per share (USD per share)	$ 38.35	$ 56.48

The weighted average price per treasury share withheld for payment of taxes.

No definition available.

Name:	dal_WeightedAveragePricePerTreasuryShareWithheldForTaxes
Namespace Prefix:	dal_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration