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Discontinued Operations and Held-For-Sale Businesses (Tables)
9 Months Ended
Sep. 30, 2013
Discontinued Operations and Disposal Groups [Abstract]  
Revenue Income From Operations Of Discontinued Businesses Income Tax Expense And Impairment Of Discontinued Operations
The following table summarizes the revenue, income from operations, income tax expense, impairment and loss on disposal of all discontinued operations for the three and nine months ended September 30, 2013 and 2012:
 
 
Three Months Ended 
 September 30,
 
Nine Months Ended 
 September 30,
 
 
2013
 
2012
 
2013
 
2012
 
 
(in millions)
Revenue
 
$
124

 
$
232

 
$
539

 
$
759

Income from operations of discontinued businesses, before income tax
 
$
24

 
$
32

 
$
27

 
$
33

Income tax benefit (expense)
 
2

 
(2
)
 
(2
)
 
(8
)
Income from operations of discontinued businesses, after income tax
 
$
26

 
$
30

 
$
25

 
$
25

Net gain (loss) from disposal and impairments of discontinued businesses, after income tax
 
$
(78
)
 
$
(2
)
 
$
(111
)
 
$
68