Commitments and Contingencies (Narrative 1) (Details)	Jun. 30, 2012
Delivery Dates	2013 and continuing through 2015
All Employees [Member]
Entity Number of Employees	80,600
Percentage Of Employees Represented By Unions Under Collective Bargaining Agreements	15.00%
Delta Pilots [Member]
Entity Number of Employees	10,700
Date On Which Collective Bargaining Agreement Took Effect	Jul. 01, 2012
Date On Which Collective Bargaining Agreement Becomes Amendable	Dec. 31, 2015
B 717 200 aircraft [Member]
Other Commitments	88

Other likely quantity to be obtained in the future not meeting the definition of a lease commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions.

No definition available.

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Period Type:	instant