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Goodwill And Identifiable Intangibles (Narrative) (Details)
$ in Millions
3 Months Ended
Jun. 30, 2019
USD ($)
Acquired Finite-Lived Intangible Assets [Line Items]  
Goodwill impairment $ 0.0
Impairment of Intangible Assets (Excluding Goodwill) $ 0.0