Derivatives (Narratives) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023
AOCI Attributable to Parent [Abstract]
Interest expense	$ 76,581	$ 67,450	$ 215,297	$ 191,991
Investment Income, Net			5,000	4,600
Decrease, fair value, cash flow hedges
AOCI Attributable to Parent [Abstract]
Interest expense			4,400	2,800
Reclassified AOCI
AOCI Attributable to Parent [Abstract]
Interest expense			9,400	$ 3,000
Reclassification net gains Interest Rate Contracts
AOCI Attributable to Parent [Abstract]
Interest expense			$ 3,300