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Restructuring and Impairment Activities (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended 12 Months Ended
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Sep. 30, 2015
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Restructuring Cost and Reserve [Line Items]                        
Restructuring and impairment expense $ 21.6 $ 1.3 $ 0.9 $ 1.8 $ 4.1 $ 1.3 $ 5.2 $ 4.0   $ 25.6 $ 14.6 $ 13.1
Restructuring Reserve [Roll Forward]                        
Balance at beginning of year       $ 7.7       $ 8.7 $ 8.7 7.7 8.7  
Accruals for announced programs                   4.3 8.0  
Cash payments                   (8.4) (8.3)  
Exchange rate impacts                   0.7 (0.7)  
Balance at end of period $ 4.3       $ 7.7         4.3 7.7 8.7
Engineered Papers [Member]                        
Restructuring Cost and Reserve [Line Items]                        
Restructuring and impairment expense                 $ 14.4 4.0   11.3
Engineered Papers [Member] | Employee Severance [Member] | France, Brazil, And United States [Member]                        
Restructuring Cost and Reserve [Line Items]                        
Restructuring and impairment expense                   3.4 7.8 9.4
Engineered Papers [Member] | Asset Impairment Charge [Member] | RTL facility [Member]                        
Restructuring Cost and Reserve [Line Items]                        
Restructuring and impairment expense                     5.2  
Engineered Papers [Member] | Asset Impairment Charge [Member] | Polish and Brazil [Member]                        
Restructuring Cost and Reserve [Line Items]                        
Restructuring and impairment expense                   0.6 1.4  
Engineered Papers [Member] | Asset Impairment Charge [Member] | Philippines [Member] | RTL facility [Member]                        
Restructuring Cost and Reserve [Line Items]                        
Restructuring and impairment expense                     5.2  
Engineered Papers [Member] | Facility Closing [Member] | Lee Mills And Golden Hills Manufacturing Facilities [Member]                        
Restructuring Cost and Reserve [Line Items]                        
Restructuring and impairment expense                       1.0
Engineered Papers [Member] | Other Restructuring [Member] | Canada Manufacturing Facility [Member]                        
Restructuring Cost and Reserve [Line Items]                        
Restructuring and impairment expense                       0.9
Advanced Materials & Structures [Member]                        
Restructuring Cost and Reserve [Line Items]                        
Restructuring and impairment expense                   21.3 (0.2) 0.4
Corporate, Non-Segment [Member]                        
Restructuring Cost and Reserve [Line Items]                        
Restructuring and impairment expense                   0.3 $ 0.4 $ 1.4
Trade names [Member] | Advanced Materials & Structures [Member]                        
Restructuring Cost and Reserve [Line Items]                        
Impairment of Intangible Assets, Finite-lived                   $ 20.7