v3.7.0.1
Restructuring Reserve Roll Forward (Details)
$ in Millions
3 Months Ended
Mar. 31, 2017
USD ($)
Restructuring Reserve [Roll Forward]  
Beginning Balance $ 0
Restructuring expenses 24
Cash settlements 0
Adjustments to previous estimates 0
Restructuring Reserve, Asset Impairment (3)
Ending Balance 21
Employee Separation Costs  
Restructuring Reserve [Roll Forward]  
Beginning Balance 0
Restructuring expenses 21
Cash settlements 0
Adjustments to previous estimates 0
Restructuring Reserve, Asset Impairment 0
Ending Balance 21
Contract Termination Costs  
Restructuring Reserve [Roll Forward]  
Beginning Balance 0
Restructuring expenses 0
Cash settlements 0
Adjustments to previous estimates 0
Restructuring Reserve, Asset Impairment 0
Ending Balance 0
Other Costs  
Restructuring Reserve [Roll Forward]  
Beginning Balance 0
Restructuring expenses 3
Cash settlements 0
Adjustments to previous estimates 0
Restructuring Reserve, Asset Impairment (3)
Ending Balance $ 0