Description Of Business And Basis Of Presentation Fiscal Period (Details)	3 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Fiscal Period
Current and Prior Years Fiscal Period (in weeks)	52	52
Current and Prior Years Fiscal Quarter Period (in weeks)	13	13
Minimum
Fiscal Period
Fiscal Year	52
Maximum
Fiscal Period
Fiscal Year	53