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Segments (Tables)
 6 Months Ended
Jun. 30, 2017
Segment Reporting [Abstract]  
Schedule of segment reporting information, by segment Segment results are prepared based on our internal accounting methods described below, with reconciliations to consolidated amounts in accordance with GAAP. Our segments are not designed to measure operating income or loss directly related to the products and services included in each segment on a stand-alone basis.
(in millions)
Airline
Refinery
 
Intersegment Sales/Other
 
Consolidated
Three Months Ended June 30, 2017
 
 
 
 
 
 
Operating revenue:
$
10,724

$
1,139

 
 
 
$
10,791

Sales to airline segment
 
 
 
$
(193
)
(1) 
 
Exchanged products
 
 
 
(756
)
(2) 
 
Sales of refined products
 
 
 
(123
)
(3) 
 
Operating income(4)
2,022

6

 
—

 
2,028

Interest expense, net
103

—

 
—

 
103

Depreciation and amortization
524

11

 
—

 
535

Total assets, end of period
50,328

1,487

 
—

 
51,815

Capital expenditures
928

60

 
—

 
988

 
 
 
 
 
 
 
Three Months Ended June 30, 2016
 
 
 
 
 
 
Operating revenue:
$
10,398

$
1,027

 
 
 
$
10,447

Sales to airline segment
 
 
 
$
(178
)
(1) 
 
Exchanged products
 
 
 
(745
)
(2) 
 
Sales of refined products
 
 
 
(55
)
(3) 
 
Operating income (loss)(4)
2,433

(10
)
 
—

 
2,423

Interest expense, net
92

1

 
—

 
93

Depreciation and amortization
461

9

 
—

 
470

Total assets, end of period
50,213

1,421

 
—

 
51,634

Capital expenditures
1,026

20

 
—

 
1,046

 
(1) 
Represents transfers, valued on a market price basis, from the refinery to the airline segment for use in airline operations. We determine market price by reference to the market index for the primary delivery location, which is New York Harbor, for jet fuel from the refinery.
(2) 
Represents value of products delivered under our exchange agreements, as discussed above, determined on a market price basis.
(3) 
These sales were at or near cost; accordingly, the margin on these sales is de minimis.
(4) 
Includes the impact of pricing arrangements between the airline and refinery segments with respect to the refinery's inventory price risk.

(in millions)
Airline
Refinery
 
Intersegment Sales/Other
 
Consolidated
Six Months Ended June 30, 2017
 
 
 
 
 
 
Operating revenue:
$
19,811

$
2,267

 
 
 
$
19,939

Sales to airline segment
 
 
 
$
(383
)
(1) 
 
Exchanged products
 
 
 
(1,489
)
(2) 
 
Sales of refined products
 
 
 
(267
)
(3) 
 
Operating income(4)
3,031

50

 
—

 
3,081

Interest expense, net
197

—

 
—

 
197

Depreciation and amortization
1,054

21

 
—

 
1,075

Capital expenditures
1,704

86

 
—

 
1,790

 
 
 
 
 
 
 
Six Months Ended June 30, 2016
 
 
 
 
 
 
Operating revenue:
$
19,570

$
1,792

 
 
 
$
19,698

Sales to airline segment
 
 
 
$
(322
)
(1) 
 
Exchanged products
 
 
 
(1,271
)
(2) 
 
Sales of refined products
 
 
 
(71
)
(3) 
 
Operating income (loss)(4)
4,001

(38
)
 
—

 
3,963

Interest expense, net
199

1

 
—

 
200

Depreciation and amortization
938

18

 
—

 
956

Capital expenditures
1,884

33

 
—

 
1,917

(1) 
Represents transfers, valued on a market price basis, from the refinery to the airline segment for use in airline operations. We determine market price by reference to the market index for the primary delivery location, which is New York Harbor, for jet fuel from the refinery.
(2) 
Represents value of products delivered under our exchange agreements, as discussed above, determined on a market price basis.
(3) 
These sales were at or near cost; accordingly, the margin on these sales is de minimis.
(4) 
Includes the impact of pricing arrangements between the airline and refinery segments with respect to the refinery's inventory price risk.