Interest on Borrowings (Components of Interest Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Interest expense, borrowings:
Interest expense	$ 269,941	$ 229,559	$ 167,618
Capitalized interest	(14,482)	(11,814)	(9,700)
Amortization of transaction costs	6,131	6,987	5,556
Interest expense resulting rom derivatives	5,415	774	3,950
Total interest expense	$ 256,175	$ 223,958	$ 167,424