Revenue Recognition (Revenue disaggregated by timing of revenue recognition) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Revenue From Contract With Customer [Abstract]
Revenues Recognized Over Time	$ 118,368	$ 127,091	$ 209,683	$ 230,285
Revenues recognized at a point in time	111,759	118,966	229,352	245,321
Total revenues recognized under ASC 606	230,127	246,057	439,035	475,606
Revenues recognized under ASC 840	1,305,523	1,373,925	2,527,839	2,661,956
Revenues recognized under ASC 944	49,472	52,373	93,964	99,060
Revenues recognized under ASC 320	64,738	30,509	129,330	64,082
Total revenues	$ 1,649,860	$ 1,702,864	$ 3,190,168	$ 3,300,704