Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions		3 Months Ended
		Jun. 30, 2021	Jun. 30, 2020
Changes in Accumulated Other Comprehensive Loss [Abstract]
Beginning balance		$ 348.7
Other comprehensive income before reclassifications		5.3	$ 6.1
Reclassification from accumulated other comprehensive loss for unrecognized net pension loss in disposed business	[1]	1.7
Income taxes		0.0	(0.7)
Total other comprehensive income		8.0	7.5
Ending balance		360.0
Air-Cooled Automotive Business [Member] | Held for Sale [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		(161.2)	(223.3)
Ending balance		(153.2)	(215.8)
Foreign Currency Translation [Member]
Changes in Accumulated Other Comprehensive Loss [Abstract]
Beginning balance		(31.0)	(61.4)
Other comprehensive income before reclassifications		5.0	5.3
Income taxes		0.0	0.0
Total other comprehensive income		5.0	5.3
Ending balance		(26.0)	(56.1)
Defined Benefit Plans [Member]
Changes in Accumulated Other Comprehensive Loss [Abstract]
Beginning balance		(130.8)	(160.9)
Other comprehensive income before reclassifications		0.0	0.0
Reclassification from accumulated other comprehensive loss	[2]	1.7	1.6
Reclassification from accumulated other comprehensive loss for unrecognized net pension loss in disposed business	[1]	1.7
Income taxes		0.0	(0.4)
Total other comprehensive income		3.4	1.2
Ending balance		(127.4)	(159.7)
Cash Flow Hedges [Member]
Changes in Accumulated Other Comprehensive Loss [Abstract]
Beginning balance		0.6	(1.0)
Other comprehensive income before reclassifications		0.3	0.8
Reclassification from accumulated other comprehensive loss	[3]	(0.7)	0.5
Income taxes		0.0	(0.3)
Total other comprehensive income		(0.4)	1.0
Ending balance		$ 0.2	$ 0.0

[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.