Revenue Recognition (Revenue disaggregated by timing of revenue recognition) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Revenue From Contract With Customer [Abstract]
Revenues Recognized Over Time	$ 73,785	$ 51,161	$ 261,638	$ 165,445
Revenues recognized at a point in time	90,763	84,820	322,405	304,522
Total revenues recognized under ASC 606	164,548	135,981	584,043	469,967
Revenues recognized under ASC 840	1,154,751	945,024	3,701,695	2,780,668
Revenues recognized under ASC 944	53,853	53,397	152,745	145,597
Revenues recognized under ASC 320	31,184	35,580	102,963	85,895
Total revenues	$ 1,404,336	$ 1,169,982	$ 4,541,446	$ 3,482,127