Employee Benefit Plans - Summary of Weighted Average Asset Allocation of Plan Assets by Asset Category (Detail) |
12 Months Ended | |
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Mar. 31, 2017 |
Mar. 31, 2016 |
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| Defined Benefit Plan Disclosure [Line Items] | ||
| Target Plan Asset Allocations | 100.00% | 100.00% |
| Equity Securities [Member] | ||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Target Plan Asset Allocations Range Minimum | 50.00% | |
| Target Plan Asset Allocations Range Maximum | 70.00% | |
| Target Plan Asset Allocations | 68.00% | 67.00% |
| Debt Securities [Member] | ||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Target Plan Asset Allocations Range Minimum | 20.00% | |
| Target Plan Asset Allocations Range Maximum | 50.00% | |
| Target Plan Asset Allocations | 32.00% | 33.00% |
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Target allocation maximum percentage of investments of this type to total plan assets presented on a weighted average basis. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Target allocation minimum percentage of investments of this type to total plan assets presented on a weighted average basis. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Percentage of fair value of investments (categorized by debt securities, equity securities, real estate and other plan assets) to the fair value of plan assets held. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Details
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