Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions		3 Months Ended			9 Months Ended
		Dec. 31, 2021	Jun. 30, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Changes in Accumulated Other Comprehensive Loss [Abstract]
Beginning balance			$ 348.7		$ 348.7
Other comprehensive income (loss) before reclassifications		$ (3.0)		$ 18.4	(4.9)	$ 42.1
Reclassification from accumulated other comprehensive loss for unrecognized net pension loss in disposed business	[1]	0.0			1.7
Income taxes		0.0		(0.3)	(0.1)	(1.6)
Total other comprehensive income (loss)		(1.6)		19.3	0.4	45.8
Ending balance		430.2			430.2
Air-Cooled Automotive Business [Member]
Changes in Accumulated Other Comprehensive Loss [Abstract]
Write-off of net actuarial losses			1.7
Accumulated Other Comprehensive Loss [Member]
Changes in Accumulated Other Comprehensive Loss [Abstract]
Beginning balance		(159.2)	(161.2)	(196.8)	(161.2)	(223.3)
Ending balance		(160.8)		(177.5)	(160.8)	(177.5)
Foreign Currency Translation [Member]
Changes in Accumulated Other Comprehensive Loss [Abstract]
Beginning balance		(33.6)	(31.0)	(38.8)	(31.0)	(61.4)
Other comprehensive income (loss) before reclassifications		(3.4)		18.0	(6.0)	40.6
Income taxes		0.0		0.0	0.0	0.0
Total other comprehensive income (loss)		(3.4)		18.0	(6.0)	40.6
Ending balance		(37.0)		(20.8)	(37.0)	(20.8)
Defined Benefit Plans [Member]
Changes in Accumulated Other Comprehensive Loss [Abstract]
Beginning balance		(125.8)	(130.8)	(158.4)	(130.8)	(160.9)
Other comprehensive income (loss) before reclassifications		0.0		0.0	0.0	0.0
Reclassification from accumulated other comprehensive income (loss)	[2]	1.6		1.6	4.9	4.9
Reclassification from accumulated other comprehensive loss for unrecognized net pension loss in disposed business	[1]	0.0			1.7
Income taxes		0.0		(0.3)	0.0	(1.1)
Total other comprehensive income (loss)		1.6		1.3	6.6	3.8
Ending balance		(124.2)		(157.1)	(124.2)	(157.1)
Cash Flow Hedges [Member]
Changes in Accumulated Other Comprehensive Loss [Abstract]
Beginning balance		0.2	$ 0.6	0.4	0.6	(1.0)
Other comprehensive income (loss) before reclassifications		0.4		0.4	1.1	1.5
Reclassification from accumulated other comprehensive income (loss)	[3]	(0.2)		(0.4)	(1.2)	0.4
Income taxes		0.0		0.0	(0.1)	(0.5)
Total other comprehensive income (loss)		0.2		0.0	(0.2)	1.4
Ending balance		$ 0.4		$ 0.4	$ 0.4	$ 0.4

[1] As a result of the sale of the air-cooled automotive business, the Company wrote-off $1.7 million of net actuarial losses related to the disposed business’s pension plan as a component of the loss on sale recorded during the first quarter of fiscal 2022. See Note 1 for additional information.

[2] Amounts are included in the calculation of net periodic benefit cost for the Company’s defined benefit plans, which include pension and other postretirement plans. See Note 5 for additional information about the Company’s pension plans.

[3] Amounts represent net gains and losses associated with cash flow hedges that were reclassified to net earnings.