XML 74 R49.htm IDEA: XBRL DOCUMENT v3.6.0.2
Restructuring Charges (Summary of Restructuring Charges) (Details) - USD ($)
$ in Millions
 1 Months Ended 12 Months Ended
Mar. 31, 2015
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Restructuring Cost and Reserve [Line Items]        
Total restructuring charges   $ 41 $ 172 $ 0
Rebranding of Trade Name        
Restructuring Cost and Reserve [Line Items]        
Total restructuring charges $ 119 0 119  
Severance        
Restructuring Cost and Reserve [Line Items]        
Restructuring reserve   17 12  
Total restructuring charges   22 25  
Facilities-related        
Restructuring Cost and Reserve [Line Items]        
Total restructuring charges   1 0  
Asset impairments        
Restructuring Cost and Reserve [Line Items]        
Total restructuring charges   8 18  
Other Restructuring        
Restructuring Cost and Reserve [Line Items]        
Total restructuring charges   $ 10 $ 10