REVENUE - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Disaggregation of Revenue [Line Items]
Net sales	$ 6,619	$ 6,720	$ 19,190	$ 17,858
FAS
Disaggregation of Revenue [Line Items]
Net sales	3,581	3,834	10,450	10,063
FRS
Disaggregation of Revenue [Line Items]
Net sales	3,038	2,886	8,740	7,795
Point in time
Disaggregation of Revenue [Line Items]
Net sales	5,948	5,733	17,157	14,105
Point in time | FAS
Disaggregation of Revenue [Line Items]
Net sales	3,389	3,544	9,887	8,813
Point in time | FRS
Disaggregation of Revenue [Line Items]
Net sales	2,559	2,189	7,270	5,292
Over time
Disaggregation of Revenue [Line Items]
Net sales	671	987	2,033	3,753
Over time | FAS
Disaggregation of Revenue [Line Items]
Net sales	192	290	563	1,250
Over time | FRS
Disaggregation of Revenue [Line Items]
Net sales	$ 479	$ 697	$ 1,470	$ 2,503