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	Cumulative Effect, Period of Adoption, Adjustment [Member] Common Stock [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Additional Paid-in Capital [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Retained Earnings [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Accumulated Other Comprehensive Loss [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Treasury Stock, at Cost [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Non-controlling Interest [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance at Mar. 31, 2018	$ 32.7	$ 229.9	$ 394.9	$ (140.3)	$ (27.1)	$ 8.4	$ 498.5
Balance (Revenue Recognition [Member]) at Mar. 31, 2018								$ 0.0	$ 0.0	$ (7.6)	$ 0.0	$ 0.0	$ 0.0	$ (7.6)
Balance (in shares) at Mar. 31, 2018	52.3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) earnings	$ 0.0	0.0	84.8	0.0	0.0	1.1	85.9
Other comprehensive income (loss)	0.0	0.0	0.0	(38.1)	0.0	(0.5)	(38.6)
Stock options and awards	$ 0.3	0.8	0.0	0.0	0.0	0.0	1.1
Stock options and awards (in shares)	0.5
Purchase of treasury stock	$ 0.0	0.0	0.0	0.0	(4.3)	0.0	(4.3)
Stock-based compensation expense	0.0	7.9	0.0	0.0	0.0	0.0	7.9
Dividend paid to noncontrolling interest	0.0	0.0	0.0	0.0	0.0	(1.8)	(1.8)
Balance at Mar. 31, 2019	$ 33.0	238.6	472.1	(178.4)	(31.4)	7.2	541.1
Balance (in shares) at Mar. 31, 2019	52.8
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) earnings	$ 0.0	0.0	(2.2)	0.0	0.0	0.2	(2.0)
Other comprehensive income (loss)	0.0	0.0	0.0	(44.9)	0.0	(0.4)	(45.3)
Stock options and awards	$ 0.3	(0.1)	0.0	0.0	0.0	0.0	0.2
Stock options and awards (in shares)	0.6
Purchase of treasury stock	$ 0.0	0.0	0.0	0.0	(5.7)	0.0	(5.7)
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	(1.3)	(1.3)
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						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						54.3