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, 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 earnings (loss)	$ 0.0	0.0	2.3	0.0	0.0	0.5	2.8
Other comprehensive income (loss)	0.0	0.0	0.0	8.0	0.0	0.2	8.2
Stock options and awards	$ 0.1	0.7	0.0	0.0	0.0	0.0	0.8
Stock options and awards (in shares)	0.2
Purchase of treasury stock	$ 0.0	0.0	0.0	0.0	(1.0)	0.0	(1.0)
Stock-based compensation expense	0.0	1.2	0.0	0.0	0.0	0.0	1.2
Dividend paid to noncontrolling interest	0.0	0.0	0.0	0.0	0.0	(0.9)	(0.9)
Balance at Jun. 30, 2021	$ 34.0	256.9	261.5	(153.2)	(39.2)	7.2	367.2
Balance (in shares) at Jun. 30, 2021	54.5
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 earnings (loss)							3.4
Other comprehensive income (loss)							1.8
Balance at Sep. 30, 2021	$ 34.1	259.4	261.9	(159.2)	(39.2)	7.0	364.0
Balance (in shares) at Sep. 30, 2021	54.5
Balance at Jun. 30, 2021	$ 34.0	256.9	261.5	(153.2)	(39.2)	7.2	367.2
Balance (in shares) at Jun. 30, 2021	54.5
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss)	$ 0.0	0.0	0.4	0.0	0.0	0.2	0.6
Other comprehensive income (loss)	0.0	0.0	0.0	(6.0)	0.0	(0.4)	(6.4)
Stock options and awards	$ 0.1	0.1	0.0	0.0	0.0	0.0	0.2
Stock options and awards (in shares)	0.0
Stock-based compensation expense	$ 0.0	2.4	0.0	0.0	0.0	0.0	2.4
Balance at Sep. 30, 2021	$ 34.1	259.4	261.9	(159.2)	(39.2)	7.0	364.0
Balance (in shares) at Sep. 30, 2021	54.5
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 earnings (loss)	$ 0.0	0.0	14.3	0.0	0.0	0.0	$ 14.3
Other comprehensive income (loss)	0.0	0.0	0.0	(23.8)	0.0	(0.4)	(24.2)
Stock options and awards	$ 0.1	0.0	0.0	0.0	0.0	0.0	0.1
Stock options and awards (in shares)	0.1
Purchase of treasury stock	$ 0.0	0.0	0.0	0.0	(1.7)	0.0	(1.7)
Stock-based compensation expense	0.0	1.1	0.0	0.0	0.0	0.0	1.1
Dividend paid to noncontrolling interest	0.0	0.0	0.0	0.0	0.0	(0.6)	(0.6)
Balance at Jun. 30, 2022	$ 34.3	262.7	358.7	(173.3)	(41.7)	6.4	447.1
Balance (in shares) at Jun. 30, 2022	54.9
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 earnings (loss)							$ 38.6
Other comprehensive income (loss)							(46.7)
Balance at Sep. 30, 2022	$ 34.4	266.0	383.1	(195.3)	(43.3)	5.8	$ 450.7
Balance (in shares) at Sep. 30, 2022	55.1						55.1
Balance at Jun. 30, 2022	$ 34.3	262.7	358.7	(173.3)	(41.7)	6.4	$ 447.1
Balance (in shares) at Jun. 30, 2022	54.9
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss)	$ 0.0	0.0	24.4	0.0	0.0	(0.1)	24.3
Other comprehensive income (loss)	0.0	0.0	0.0	(22.0)	0.0	(0.5)	(22.5)
Stock options and awards	$ 0.1	0.9	0.0	0.0	0.0	0.0	1.0
Stock options and awards (in shares)	0.2
Purchase of treasury stock	$ 0.0	0.0	0.0	0.0	(1.6)	0.0	(1.6)
Stock-based compensation expense	0.0	2.4	0.0	0.0	0.0	0.0	2.4
Balance at Sep. 30, 2022	$ 34.4	$ 266.0	$ 383.1	$ (195.3)	$ (43.3)	$ 5.8	$ 450.7
Balance (in shares) at Sep. 30, 2022	55.1						55.1