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Accumulated Other Comprehensive Loss (Notes)
 3 Months Ended
Mar. 31, 2014
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]  
Comprehensive Income (Loss) Note [Text Block]
ACCUMULATED OTHER COMPREHENSIVE LOSS

The following tables show the components of accumulated other comprehensive loss:
(in millions)
Pension and Other Benefits Liabilities
Derivative Contracts
Total(1)
Balance at December 31, 2013
$
(5,349
)
$
219

$
(5,130
)
Changes in value (net of tax effect of $2)
10

(3
)
7

Reclassifications into earnings (net of tax effect of $9)
12

(28
)
(16
)
Balance at March 31, 2014
$
(5,327
)
$
188

$
(5,139
)

 
(in millions)
Pension and Other Benefits Liabilities
Derivative Contracts(2)
Total
Balance at December 31, 2012
$
(8,314
)
$
(263
)
$
(8,577
)
Changes in value (net of tax effect of $0)
—

114

114

Reclassifications into earnings (net of tax effect of $0)
58

(21
)
37

Balance at March 31, 2013
$
(8,256
)
$
(170
)
(8,426
)


(1) 
Includes $1.9 billion of deferred income tax expense, primarily related to pension obligations, that will not be recognized in net income until the pension obligations are fully extinguished, which is not expected to occur for at least 25 years.
(2) 
Includes $321 million of deferred income tax expense that remained in accumulated other comprehensive loss until December 2013 when all amounts in accumulated other comprehensive loss that related to fuel derivatives designated as accounting hedges were recognized in the Consolidated Statement of Operations.