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Retirement Plans - Summary of Accumulated Benefit Obligation Related to All Defined Pension Plans (Detail) - USD ($) $ in Thousands | Mar. 31, 2019 | Mar. 31, 2018
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United States Plans |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Projected benefit obligation | $ 16,647 | $ 16,713
Accumulated benefit obligation | 16,647 | 16,713
Fair value of plan assets | 13,763 | 13,928
International Plans |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Projected benefit obligation | 75,038 | 82,033
Accumulated benefit obligation | 71,350 | 77,724
Fair value of plan assets | 36,791 | 38,757
Unfunded Defined Benefit Plan | United States Plans |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Projected benefit obligation | 0 | 0
Accumulated benefit obligation | 0 | 0
Unfunded Defined Benefit Plan | International Plans |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Projected benefit obligation | 32,320 | 33,124
Accumulated benefit obligation | 30,328 | 31,270
Defined Benefit Plans With An Accumulated Benefit Obligation In Excess Of The Fair Value Of Plan Assets | United States Plans |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Projected benefit obligation | 16,647 | 16,713
Accumulated benefit obligation | 16,647 | 16,713
Fair value of plan assets | 13,763 | 13,928
Defined Benefit Plans With An Accumulated Benefit Obligation In Excess Of The Fair Value Of Plan Assets | International Plans |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Projected benefit obligation | 74,235 | 81,253
Accumulated benefit obligation | 70,654 | 77,021
Fair value of plan assets | $ 36,077 | $ 37,986

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- Definition Amount of accumulated benefit obligation for defined benefit plan with accumulated benefit obligation in excess of plan assets. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e2417-114920 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e2417-114920 + Details
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