XML 57 R45.htm IDEA: XBRL DOCUMENT v3.5.0.2
Redeemable Noncontrolling Interest (Details) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Dec. 31, 2015
Redeemable Noncontrolling Interest [Line Items]      
Redeemable noncontrolling interest   $ 0.0  
Redeemable noncontrolling interest $ 0.0   $ 12.1
ATI Flowform Products [Member]      
Redeemable Noncontrolling Interest [Line Items]      
Payments to Noncontrolling Interests $ 12.1    
Dynamic Flowform [Member]      
Redeemable Noncontrolling Interest [Line Items]      
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners     15.00%
[RetainedEarningsMember]      
Redeemable Noncontrolling Interest [Line Items]      
Redeemable noncontrolling interest   $ (0.1)