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Discontinued Operations and Held-For-Sale Businesses (Tables)
3 Months Ended
Mar. 31, 2015
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 prior to the adoption of the new accounting guidance for discontinued operations for the periods indicated:
 
Three Months Ended March 31,
 
2015
 
2014
 
(in millions)
Revenue
$

 
$
129

Income from operations of discontinued businesses, before income tax
$

 
$
34

Income tax expense

 
(14
)
Income from operations of discontinued businesses, after income tax
$

 
$
20

Net loss from disposal and impairments of discontinued businesses, after income tax
$

 
$
(43
)