Tangible Equity Units (Schedule of Tangible Equity Units Activity) (Details) - Tangible Equity Units [Member] - shares		1 Months Ended	12 Months Ended
	Jul. 01, 2019	Jul. 31, 2019	Mar. 31, 2021	Mar. 31, 2020
Tangible Equity Units [Line Items]
Outstanding at March 31,			5,137,345,000
Issued	5,750,000	5,750,000		5,750,000,000
Conversions			(303,700,000)	(612,655,000)
Outstanding at March 31,			4,833,645,000	5,137,345,000