Quarterly report pursuant to Section 13 or 15(d)

Restructuring Expense (Details)

v3.7.0.1
Restructuring Expense (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Dec. 31, 2016
Restructuring Cost and Reserve [Line Items]      
Restructuring expense $ 6 $ 7  
Share-based compensation 32 17  
Restructuring expense [Member]      
Restructuring Cost and Reserve [Line Items]      
Share-based compensation 3 $ 6  
Accrued liabilities [Member]      
Restructuring Cost and Reserve [Line Items]      
Accrued restructuring expense $ 6   $ 6