REVENUE - Disaggregation of Revenue (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Disaggregation of Revenue [Line Items]
Net sales	$ 30,346	$ 26,041	$ 24,124
Point in time
Disaggregation of Revenue [Line Items]
Net sales	26,938	23,273	19,732
Over time
Disaggregation of Revenue [Line Items]
Net sales	3,408	2,768	4,392
Operating segments
Disaggregation of Revenue [Line Items]
Net sales	30,346	26,041	24,124
Intersegment eliminations
Disaggregation of Revenue [Line Items]
Net sales	(59)	(47)	(59)
Intersegment eliminations | Point in time
Disaggregation of Revenue [Line Items]
Net sales	(59)	(47)	(59)
Intersegment eliminations | Over time
Disaggregation of Revenue [Line Items]
Net sales	0	0	0
FAS | Operating segments
Disaggregation of Revenue [Line Items]
Net sales	15,769	14,027	13,493
FAS | Operating segments | Point in time
Disaggregation of Revenue [Line Items]
Net sales	14,942	13,288	12,058
FAS | Operating segments | Over time
Disaggregation of Revenue [Line Items]
Net sales	827	739	1,435
FRS | Operating segments
Disaggregation of Revenue [Line Items]
Net sales	12,733	10,603	9,495
FRS | Operating segments | Point in time
Disaggregation of Revenue [Line Items]
Net sales	12,004	9,904	7,667
FRS | Operating segments | Over time
Disaggregation of Revenue [Line Items]
Net sales	729	699	1,828
Nextracker | Operating segments
Disaggregation of Revenue [Line Items]
Net sales	1,903	1,458	1,195
Nextracker | Operating segments | Point in time
Disaggregation of Revenue [Line Items]
Net sales	51	128	66
Nextracker | Operating segments | Over time
Disaggregation of Revenue [Line Items]
Net sales	$ 1,852	$ 1,330	$ 1,129