Pension and Other Benefits (Details) - USD ($)	3 Months Ended	12 Months Ended
	Jun. 30, 2021	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Change in pension liability and postretirement obligations, net of tax		$ (8,243,000)	$ (16,312,000)	$ (41,685,000)
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year		271,985,000
Fair value of plan assets at end of year		$ 231,667,000	$ 271,985,000
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Actual		100.00%	100.00%
Liabilities		$ 864,658,000	$ 912,904,000
Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year		6,839,000
Defined Benefit Plan, Pension Plan with Projected Benefit Obligation in Excess of Plan Assets, Projected Benefit Obligation		176,201,000	211,307,000
Defined Benefit Plan, Pension Plan with Projected Benefit Obligation in Excess of Plan Assets, Plan Assets		101,826,000	121,110,000
Assets for Plan Benefits, Defined Benefit Plan		5,832,000	5,208,000
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement and Curtailment		(62,000)	0	19,038,000
Defined Benefit Plan, Benefit Obligation, Benefits Paid		(23,980,000)	(23,200,000)
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation at beginning of year	$ 404,841,000	356,974,000	404,841,000
Service cost		707,000	980,000	1,092,000
Interest cost		11,312,000	10,130,000	11,527,000
Actuarial (gain) loss		(42,652,000)	(30,482,000)
Benefits paid		(23,980,000)	(23,200,000)
Foreign exchange rate changes		(2,151,000)	(5,295,000)
Benefit obligation at end of year		300,210,000	356,974,000	404,841,000
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year	286,678,000	271,985,000	286,678,000
Actual gain (loss) on plan assets		(20,735,000)	3,048,000
Employer contribution		4,796,000	5,442,000
Foreign exchange rate changes		(399,000)	17,000
Fair value of plan assets at end of year		231,667,000	271,985,000	286,678,000
Funded status		(68,543,000)	(84,989,000)
Unrecognized actuarial loss			(29,230,000)
Net amount recognized		(51,374,000)	(55,759,000)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Accrued liabilities		(3,715,000)	(3,523,000)
Other non-current liabilities		(70,660,000)	(86,674,000)
Net amount recognized		(51,374,000)	(55,759,000)
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax		17,169,000	29,230,000
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)		$ 1,964,000	(470,000)	$ 22,104,000
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement	$ 2,722,000
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Increase (Decrease) for Plan Amendment			19,038,000
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Assets Transferred to (from) Plan			$ 2,176,000
Pension Plans | Fixed income securities
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Actual		78.00%	66.00%
Pension Plans | Equity securities
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Actual		22.00%	34.00%
Postretirement Benefit Plans
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Accrued liabilities		$ (171,000)
Other non-current liabilities		(826,000)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)		158,000
Liability, Defined Benefit Plan		997,000
Defined Benefit Postretirement Life Insurance
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)		124,000
Liability, Defined Benefit Pension Plan		4,492,000
Equity securities
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year		80,020,000
Fair value of plan assets at end of year		41,850,000	$ 80,020,000
Fixed income securities
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year		178,155,000
Fair value of plan assets at end of year		178,904,000	178,155,000
Real Estate Funds [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year		11,849,000
Fair value of plan assets at end of year		8,565,000	11,849,000
Cash and Cash Equivalents [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year		1,961,000
Fair value of plan assets at end of year		2,348,000	1,961,000
Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year		65,673,000
Fair value of plan assets at end of year		36,988,000	65,673,000
Fair Value, Inputs, Level 1 [Member] | Equity securities
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year		46,699,000
Fair value of plan assets at end of year		27,576,000	46,699,000
Fair Value, Inputs, Level 1 [Member] | Fixed income securities
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year		17,013,000
Fair value of plan assets at end of year		7,064,000	17,013,000
Fair Value, Inputs, Level 1 [Member] | Real Estate Funds [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year		0
Fair value of plan assets at end of year		0	0
Fair Value, Inputs, Level 1 [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year		1,961,000
Fair value of plan assets at end of year		2,348,000	1,961,000
Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year		133,670,000
Fair value of plan assets at end of year		145,904,000	133,670,000
Fair Value, Inputs, Level 2 [Member] | Equity securities
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year		0
Fair value of plan assets at end of year		0	0
Fair Value, Inputs, Level 2 [Member] | Fixed income securities
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year		133,670,000
Fair value of plan assets at end of year		145,904,000	133,670,000
Fair Value, Inputs, Level 2 [Member] | Real Estate Funds [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year		0
Fair value of plan assets at end of year		0	0
Fair Value, Inputs, Level 2 [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year		0
Fair value of plan assets at end of year		0	0
(Level 3)
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year		1,160,000
Fair value of plan assets at end of year		0	1,160,000
(Level 3) | Equity securities
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year		0
Fair value of plan assets at end of year		0	0
(Level 3) | Fixed income securities
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year		1,160,000
Fair value of plan assets at end of year		0	1,160,000
(Level 3) | Real Estate Funds [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year		0
Fair value of plan assets at end of year		0	0
(Level 3) | Cash and Cash Equivalents [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year		0
Fair value of plan assets at end of year		0	0
Fair Value Measured at Net Asset Value Per Share [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year		71,482,000
Fair value of plan assets at end of year		48,775,000	71,482,000
Fair Value Measured at Net Asset Value Per Share [Member] | Equity securities
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year		33,321,000
Fair value of plan assets at end of year		14,274,000	33,321,000
Fair Value Measured at Net Asset Value Per Share [Member] | Fixed income securities
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year		26,312,000
Fair value of plan assets at end of year		25,936,000	26,312,000
Fair Value Measured at Net Asset Value Per Share [Member] | Real Estate Funds [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year		11,849,000
Fair value of plan assets at end of year		8,565,000	11,849,000
Fair Value Measured at Net Asset Value Per Share [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year		0
Fair value of plan assets at end of year		$ 0	$ 0