Derivatives (Narratives) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021
AOCI Attributable To Parent [Abstract]
Interest expense	$ 59,041	$ 44,042	$ 166,033	$ 122,765
Derivative Fair Value Of Derivative Net [Abstract]
Derivative hedges, net market value	6,500	100	6,500	100
Amounts reclassified from AOCI to interest expense			100	2,300
Interest rate contracts
AOCI Attributable To Parent [Abstract]
Interest expense	1,400	$ 100	$ 9,200	$ 1,800
Investments, other
Derivative Fair Value Of Derivative Net [Abstract]
Amounts reclassified from AOCI to interest expense	$ 2,300