Description Of Business And Basis Of Presentation Narrative (Details) - USD ($)	3 Months Ended	6 Months Ended
	Sep. 30, 2021	Sep. 30, 2021
FY21 Change in Estimated Offering Period [Member]
Change in Accounting Estimate [Line Items]
Increase in Net Revenue due to Change in Estimated Offering Period	$ 125,000,000	$ 102,000,000
Increase in Net Income due to Change in Estimated Offering Period	95,000,000	77,000,000
Increase in Diluted Earnings Per Share due to Change in Estimated Offering Period	0.33	$ 0.27
FY22 Change in Estimated Offering Period [Member]
Change in Accounting Estimate [Line Items]
Decrease in Net Revenue due to Change in Estimated Offering Period	17,000,000
Decrease in Net Income due to Change in Estimated Offering Period	13,000,000
Decrease in Diluted Earnings Per Share due to Change in Estimated Offering Period	$ 0.05