Description Of Business And Basis Of Presentation Narrative (Details) - USD ($)	3 Months Ended	9 Months Ended
	Dec. 31, 2020	Dec. 31, 2020
Change in Accounting Estimate [Line Items]
Decrease in Net Revenue due to Change in Estimated Offering Period	$ 125,000,000	$ 151,000,000
Decrease in Net Income due to Change in Estimated Offering Period	105,000,000	125,000,000
Decrease in Diluted Earnings Per Share due to Change in Estimated Offering Period	$ 0.36	$ 0.43