Pension and Employee Benefit Plans, Changes in Benefit Obligations, Plan Assets and Funded Status (Details) - Pension Plans [Member] - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Change in Benefit Obligation [Roll Forward]
Benefit obligation at beginning of year	$ 228.6	$ 260.6
Service cost	0.2	0.3	$ 0.4
Interest cost	8.1	7.3	7.9
Actuarial gain	(25.8)	(16.5)
Benefits paid	(16.1)	(16.0)
Disposition of air-cooled automotive business	0.0	(5.5)
Effect of exchange rate changes	(0.1)	(1.6)
Benefit obligation at end of year	194.9	228.6	260.6
Change in Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year	179.9	183.3
Actual return on plan assets	(12.0)	7.6
Benefits paid	(16.1)	(16.0)
Employer contributions	1.5	5.0
Fair value of plan assets at end of year	153.3	179.9	183.3
Funded status at end of year	(41.6)	(48.7)
Amounts Recognized in the Consolidated Balance Sheets [Abstract]
Current liability	(1.4)	(1.5)
Noncurrent liability	(40.2)	(47.2)
Total liability	(41.6)	(48.7)
Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets [Abstract]
Accumulated benefit obligation	194.4	228.1
Amounts Recognized in Accumulated Other Comprehensive Loss [Abstract]
Net actuarial loss (gain)	123.5	131.5
Non-U.S Plans [Member]
Change in Benefit Obligation [Roll Forward]
Benefit obligation at beginning of year	26.5	36.4
Actuarial gain	(4.4)	(1.9)
Benefits paid	(1.5)	(1.5)
Disposition of air-cooled automotive business		(5.5)
Effect of exchange rate changes		(1.6)
Service and interest cost	0.7	0.6
Increase (decrease) in benefit obligation	(5.3)	(9.9)
Benefit obligation at end of year	21.2	26.5	36.4
Change in Plan Assets [Roll Forward]
Employer contributions	$ 1.5	$ 1.5	$ 2.2