Restructuring and other Exit Charges - (Roll-forward of Restructuring and Other Exit Charges) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2023	Jan. 01, 2023	Dec. 31, 2023	Jan. 01, 2023
Restructuring Reserve [Roll Forward]
Restructuring and other exit charges	$ 6,070	$ 801	$ 19,613	$ 12,394
Employee Severance
Restructuring Reserve [Roll Forward]
Restructuring charges	918		4,513
Exit charges	5,152		15,100
Restructuring and other exit charges	6,070		19,613
Employee Severance | Energy Systems
Restructuring Reserve [Roll Forward]
Restructuring charges	(7)		2,707
Exit charges	2,364		2,364
Restructuring and other exit charges	2,357		5,071
Employee Severance | Motive Power
Restructuring Reserve [Roll Forward]
Restructuring charges	925		1,772
Exit charges	1,985		6,176
Restructuring and other exit charges	2,910		7,948
Employee Severance | Specialty
Restructuring Reserve [Roll Forward]
Restructuring charges	0		34
Exit charges	803		6,560
Restructuring and other exit charges	$ 803		$ 6,594