Lease Obligations (Tables)

12 Months Ended

Dec. 31, 2014

Leases [Abstract]

Schedule of future minimum lease payments for capital leases

Capital Leases

Years Ending December 31, (in millions)	Total
2015	$	157
2016	139
2017	97
2018	51
2019	33
Thereafter	42
Total minimum lease payments	519
Less: amount of lease payments representing interest	(121		)
Present value of future minimum capital lease payments	398
Less: current obligations under capital leases	(107		)
Long-term capital lease obligations	$	291

Schedule of future minimum rental payments for operating leases

Operating Leases

Years Ending December 31, (in millions)	Delta Lease Payments(1)		Contract Carrier Aircraft Lease Payments(2)		Total
2015	$	1,363	$	344	$	1,707
2016	1,187		306		1,493
2017	1,056		267		1,323
2018	881		239		1,120
2019	747		182		929
Thereafter	5,873		296		6,169
Total minimum lease payments	$	11,107	$	1,634	$	12,741