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Income Taxes (Tables)
 9 Months Ended
Sep. 30, 2020
Text Block [Abstract]  
Income (loss) from operations before provision (benefit) for income taxes
The Company’s income taxes and the related effective tax rates for the three and nine months ended September 30, 2020 and 2019 are as follows:
 
          
          
          
          
 
  
Three Months Ended September 30,
  
Nine Months Ended September 30,
In millions
  
2020
 
2019
  
2020
 
2019
Income (loss) before income taxes
  
$
(58
) 
 
$
89
 
  
$
(497
) 
 
$
(137
) 
Provision (benefit) for income taxes
  
$
-
 
 
$
6
 
  
$
-
 
 
$
8
 
Effective tax rate
  
 
0.0%
 
 
 
6.7%
 
  
 
0.0%
 
 
 
-5.8%