Weighted average rate of return on plan assets, reflecting average rate of earnings expected on existing plan assets and expected contributions, used to determine net periodic benefit cost of defined benefit plan.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (k)(3)
-URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 8
-URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e2919-114920

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- Definition

Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 55
-Paragraph 17
-URI https://asc.fasb.org/extlink&oid=123450688&loc=d3e4179-114921

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
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-Section 50
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- Definition

Percentage of actual investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(i)
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Pension and Employee Benefit Plans, Weighted-average Asset Allocations (Details) - Pension Plans [Member]	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Weighted Average Asset Allocations [Abstract]
Target allocation		100.00%
Plan assets		100.00%	100.00%
Equity Securities [Member]
Weighted Average Asset Allocations [Abstract]
Target allocation		76.00%
Plan assets		76.00%	74.00%
Debt Securities [Member]
Weighted Average Asset Allocations [Abstract]
Target allocation		18.00%
Plan assets		15.00%	17.00%
Real Estate Investments [Member]
Weighted Average Asset Allocations [Abstract]
Target allocation		5.00%
Plan assets		8.00%	8.00%
Cash and Cash Equivalents [Member]
Weighted Average Asset Allocations [Abstract]
Target allocation		1.00%
Plan assets		1.00%	1.00%
U.S. Plans [Member]
Weighted Average Asset Allocations [Abstract]
Expected return on plan assets		7.00%	7.50%	7.50%
U.S. Plans [Member] \| Forecast [Member]
Weighted Average Asset Allocations [Abstract]
Expected return on plan assets	6.50%