CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) shares in Millions, $ in Millions	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Treasury Stock, at Cost [Member]	Non-controlling Interest [Member]	Total
Balance at Mar. 31, 2020	$ 33.3	$ 245.1	$ 469.9	$ (223.3)	$ (37.1)	$ 5.7	$ 493.6
Balance (in shares) at Mar. 31, 2020	53.4
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) earnings	$ 0.0	0.0	(210.7)	0.0	0.0	1.2	(209.5)
Other comprehensive income (loss)	0.0	0.0	0.0	62.1	0.0	0.5	62.6
Stock options and awards	$ 0.6	3.6	0.0	0.0	0.0	0.0	4.2
Stock options and awards (in shares)	0.9
Purchase of treasury stock	$ 0.0	0.0	0.0	0.0	(1.1)	0.0	(1.1)
Stock-based compensation expense	0.0	6.3	0.0	0.0	0.0	0.0	6.3
Balance at Mar. 31, 2021	$ 33.9	255.0	259.2	(161.2)	(38.2)	7.4	356.1
Balance (in shares) at Mar. 31, 2021	54.3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) earnings	$ 0.0	0.0	85.2	0.0	0.0	1.1	86.3
Other comprehensive income (loss)	0.0	0.0	0.0	11.7	0.0	(0.2)	11.5
Stock options and awards	$ 0.3	0.9	0.0	0.0	0.0	0.0	1.2
Stock options and awards (in shares)	0.5
Purchase of treasury stock	$ 0.0	0.0	0.0	0.0	(1.8)	0.0	(1.8)
Stock-based compensation expense	0.0	5.7	0.0	0.0	0.0	0.0	5.7
Dividend paid to noncontrolling interest	0.0	0.0	0.0	0.0	0.0	(0.9)	(0.9)
Balance at Mar. 31, 2022	$ 34.2	261.6	344.4	(149.5)	(40.0)	7.4	$ 458.1
Balance (in shares) at Mar. 31, 2022	54.8						54.8
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) earnings	$ 0.0	0.0	153.1	0.0	0.0	0.5	$ 153.6
Other comprehensive income (loss)	0.0	0.0	0.0	(11.6)	0.0	(0.5)	(12.1)
Stock options and awards	$ 0.4	2.6	0.0	0.0	0.0	0.0	3.0
Stock options and awards (in shares)	0.6
Purchase of treasury stock	$ 0.0	0.0	0.0	0.0	(9.0)	0.0	(9.0)
Stock-based compensation expense	0.0	6.6	0.0	0.0	0.0	0.0	6.6
Dividend paid to noncontrolling interest	0.0	0.0	0.0	0.0	0.0	(0.6)	(0.6)
Balance at Mar. 31, 2023	$ 34.6	$ 270.8	$ 497.5	$ (161.1)	$ (49.0)	$ 6.8	$ 599.6
Balance (in shares) at Mar. 31, 2023	55.4						55.4