Annual report pursuant to Section 13 and 15(d)

Business and Summary of Significant Accounting Principles (Intangible Assets and Goodwill) (Details)

v3.8.0.1
Business and Summary of Significant Accounting Principles (Intangible Assets and Goodwill) (Details)
 12 Months Ended
Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]  
Finite-lived intangible asset, useful life 12 years 10 months 3 days
Other Intangible Assets | Minimum  
Finite-Lived Intangible Assets [Line Items]  
Finite-lived intangible asset, useful life 2 years
Other Intangible Assets | Maximum  
Finite-Lived Intangible Assets [Line Items]  
Finite-lived intangible asset, useful life 20 years