Goodwill And Acquisition-Related Intangibles (Narrative) (Details)
12 Months Ended 32 Months Ended 47 Months Ended
Mar. 31, 2015
Feb. 28, 2017
Feb. 28, 2017
Minimum [Member]      
Finite-Lived Intangible Assets [Line Items]      
Finite-Lived Intangible Asset, Useful Life 2 years    
Maximum [Member]      
Finite-Lived Intangible Assets [Line Items]      
Finite-Lived Intangible Asset, Useful Life 14 years    
Weighted Average      
Finite-Lived Intangible Assets [Line Items]      
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life   2 years 10 months 3 years 5 months