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Litigation and Contingencies (Minimum Royalty and Advertising Obligations Due Under Terms of Certain Licenses Held by Company) (Details)
$ in Millions
Sep. 30, 2017
USD ($)
Royalties [Member]  
Unrecorded Unconditional Purchase Obligation [Line Items]  
2017 $ 0.5
2018 1.4
2019 1.5
2020 1.5
2021 0.0
Thereafter 0.0
Advertising [Member]  
Unrecorded Unconditional Purchase Obligation [Line Items]  
2017 0.7
2018 2.9
2019 3.0
2020 3.1
2021 3.2
Thereafter $ 10.2