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Lease Obligations
12 Months Ended
Dec. 31, 2014
Leases [Abstract]  
Lease Obligations
LEASE OBLIGATIONS

We lease aircraft, airport terminals, maintenance facilities, ticket offices and other property and equipment from third parties. Rental expense for operating leases, which is recorded on a straight-line basis over the life of the lease term, totaled approximately $1.2 billion for the year ended December 31, 2014 and $1.1 billion for the years ended December 31, 2013 and 2012. Amounts due under capital leases are recorded as liabilities, while assets acquired under capital leases are recorded as property and equipment. Amortization of assets recorded under capital leases is included in depreciation and amortization expense. Our airport terminal leases include contingent rents, which vary based upon: facility usage, enplanements, aircraft weight and other factors. Many of our aircraft, facility and equipment leases include rental escalation clauses and/or renewal options. Our leases do not include residual value guarantees and we are not the primary beneficiary in or have other forms of variable interest with the lessor of the leased assets. As a result, we have not consolidated any of the entities that lease to us.

The following tables summarize, as of December 31, 2014, our minimum rental commitments under capital leases and noncancelable operating leases (including certain aircraft flown by Contract Carriers) with initial or remaining terms in excess of one year:

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



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


 
(1) 
Includes payments accounted for as construction obligations. See Note 6.
(2) 
Represents the minimum lease obligations under our Contract Carrier agreements with Compass Airlines, Inc., ExpressJet Airlines, Inc., GoJet Airlines, LLC, Shuttle America Corporation (“Shuttle America”) and SkyWest Airlines, Inc.