XML 99 R84.htm IDEA: XBRL DOCUMENT v3.8.0.1
Goodwill and Identifiable Intangibles Acquired Finite-Lived Intangibles Esselte (Details) - Esselte Acquisition - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2017
Jan. 31, 2017
Acquired Finite-Lived Intangible Assets [Line Items]    
Identifiable intangibles   $ 277.0
Trade names    
Acquired Finite-Lived Intangible Assets [Line Items]    
Identifiable intangibles   53.2
Customer relationships    
Acquired Finite-Lived Intangible Assets [Line Items]    
Identifiable intangibles   102.4
Finite-Lived Intangible Asset, Useful Life 15 years  
Patents    
Acquired Finite-Lived Intangible Assets [Line Items]    
Identifiable intangibles   4.6
Finite-Lived Intangible Asset, Useful Life 10 years  
Trade names    
Acquired Finite-Lived Intangible Assets [Line Items]    
Indefinite-Lived Intangible   $ 116.8
Minimum    
Acquired Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Asset, Useful Life 10 years  
Minimum | Trade names    
Acquired Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Asset, Useful Life 15 years  
Maximum    
Acquired Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Asset, Useful Life 30 years  
Maximum | Trade names    
Acquired Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Asset, Useful Life 30 years