REVENUE - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
Disaggregation of Revenue [Line Items]
Net sales	$ 7,103	$ 7,756	$ 21,910	$ 22,869
Point in time
Disaggregation of Revenue [Line Items]
Net sales	5,922	6,844	18,871	20,325
Over time
Disaggregation of Revenue [Line Items]
Net sales	1,181	912	3,039	2,544
Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	7,103	7,756	21,910	22,869
Intersegment eliminations
Disaggregation of Revenue [Line Items]
Net sales	(29)	(14)	(99)	(32)
Intersegment eliminations | Point in time
Disaggregation of Revenue [Line Items]
Net sales	(29)	(14)	(99)	(32)
Intersegment eliminations | Over time
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
FAS | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	3,466	4,029	10,685	12,024
FAS | Operating Segments | Point in time
Disaggregation of Revenue [Line Items]
Net sales	3,152	3,812	9,868	11,378
FAS | Operating Segments | Over time
Disaggregation of Revenue [Line Items]
Net sales	314	217	817	646
FRS | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	2,956	3,225	9,561	9,493
FRS | Operating Segments | Point in time
Disaggregation of Revenue [Line Items]
Net sales	2,793	3,038	9,069	8,938
FRS | Operating Segments | Over time
Disaggregation of Revenue [Line Items]
Net sales	163	187	492	555
Nextracker | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	710	516	1,763	1,384
Nextracker | Operating Segments | Point in time
Disaggregation of Revenue [Line Items]
Net sales	6	8	33	41
Nextracker | Operating Segments | Over time
Disaggregation of Revenue [Line Items]
Net sales	$ 704	$ 508	$ 1,730	$ 1,343