v3.2.0.727
Restructuring Charges Restructuring Charges (Details) - Employee Severance [Member] - USD ($)
$ in Millions
Dec. 31, 2016
Dec. 31, 2015
Jun. 30, 2015
Restructuring Cost and Reserve [Line Items]      
Expected cost     $ 145
Scenario, Forecast [Member]      
Restructuring Cost and Reserve [Line Items]      
Expected cost $ 25 $ 120