Revenue Recognition (Table Text Block)

9 Months Ended

Dec. 31, 2018

Revenue From Contract With Customer [Abstract]

Disaggregation Of Revenue [Table Text Block]

		Quarter Ended December 31,
		2018		2017
		(Unaudited)
		(In thousands)
Revenues recognized over time	$	662,498	$	607,079
Revenues recognized at a point in time		65,372		62,208
Total revenues recognized under ASC 606		727,870		669,287
Revenues recognized under ASC 840		102,863		89,052
Revenues recognized under ASC 944		56,147		55,722
Revenues recognized under ASC 320		32,211		28,821
Total revenues	$	919,091	$	842,882

		Nine Months Ended December 31,
		2018		2017
		(Unaudited)
		(In thousands)
Revenues recognized over time	$	2,255,541	$	2,099,216
Revenues recognized at a point in time		240,281		236,067
Total revenues recognized under ASC 606		2,495,822		2,335,283
Revenues recognized under ASC 840		301,551		261,968
Revenues recognized under ASC 944		160,759		163,735
Revenues recognized under ASC 320		85,043		82,507
Total revenues	$	3,043,175	$	2,843,493