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Pension Benefits - Schedule Of Weighted-Average Assumptions Used to Estimate Net Periodic Pension Expense and Actuarial Present Value of Benefit Obligations (Details) - Pension Plans, Defined Benefit	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
United States
Net periodic pension expense
Discount rates	3.55%	3.40%	3.36%
Rate of increase in compensation	4.00%	4.00%	4.00%
Expected long-term rate of return on plan assets	6.25%	6.25%	6.75%
Benefit obligation
Discount rates	3.69%	3.39%	3.27%
Rate of increase in compensation		4.00%	4.00%
Non-U.S. Plans
Net periodic pension expense
Discount rates	2.34%	2.72%	2.36%
Rate of increase in compensation	2.72%	2.76%	2.80%
Expected long-term rate of return on plan assets	4.03%	4.51%	4.87%
Benefit obligation
Discount rates	2.35%	2.35%	2.84%
Rate of increase in compensation	2.59%	3.18%	2.98%

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- Definition

Benefit Obligations Assumptions Rate Increase in Compensation

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- Definition

Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rates

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- Definition

Weighted average rate for present value of future retirement benefits cash flows, used to determine net periodic benefit cost of defined benefit plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (k)(1)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (k)(3)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920

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- Definition

Weighted average rate of compensation increase used to determine net periodic benefit cost of defined benefit plan. Plan includes, but is not limited to, pay-related defined benefit plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (k)(2)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920

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