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Valuation and Qualifying Accounts and Reserves (Detail) (JPY ¥) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Mar. 31, 2014 | Mar. 31, 2013 | Mar. 31, 2012
Restructuring cost |  |  |  |  |  |
Valuation and Qualifying Accounts Disclosure [Line Items] |  |  |  |  |  |
Balance at beginning of period | ¥ 9 |  | ¥ 39 |  | ¥ 78 |
Acquisitions | 3,049 |  | 0 |  | 0 |
Addition: Charged to costs and expenses | 0 |  | 3 |  | 15 |
Deduction | (1,230) |  | (34) |  | (53) |
Translation adjustment | 104 |  | 1 |  | (1) |
Balance at end of period | 1,932 |  | 9 |  | 39 |
Restructuring cost | Closed office lease obligations |  |  |  |  |  |
Valuation and Qualifying Accounts Disclosure [Line Items] |  |  |  |  |  |
Balance at beginning of period | 9 |  | 39 |  | 78 |
Acquisitions | 0 |  | 0 |  | 0 |
Addition: Charged to costs and expenses | 0 |  | 0 |  | 0 |
Deduction | (9) |  | (31) |  | (38) |
Translation adjustment | 0 |  | 1 |  | (1) |
Balance at end of period | 0 |  | 9 |  | 39 |
Restructuring cost | Severance and other benefits to terminated employees |  |  |  |  |  |
Valuation and Qualifying Accounts Disclosure [Line Items] |  |  |  |  |  |
Balance at beginning of period | 0 |  | 0 |  | 0 |
Acquisitions | 3,049 |  | 0 |  | 0 |
Addition: Charged to costs and expenses | 0 |  | 3 |  | 15 |
Deduction | (1,221) |  | (3) |  | (15) |
Translation adjustment | 104 |  | 0 |  | 0 |
Balance at end of period | 1,932 |  | 0 |  | 0 |
Valuation Allowance of Deferred Tax Assets |  |  |  |  |  |
Valuation and Qualifying Accounts Disclosure [Line Items] |  |  |  |  |  |
Balance at beginning of period | 18,831 |  | 24,138 |  | 26,794 |
Acquisitions | 10,453 |  | 1,085 |  | 875 |
Addition: Charged to costs and expenses | 3,300 |  | 4,973 |  | 6,339 |
Deduction | (3,964) | [1] | (12,116) | [1] | (6,836) | [1]
Other | 49 | [2] | 751 | [2] | (3,034) | [2]
Balance at end of period | ¥ 28,669 |  | ¥ 18,831 |  | ¥ 24,138 |
[1] | The amount of deduction includes benefits recognized in earnings, expiry of loss carryforwards and sales of subsidiaries.
[2] | The amount of other includes translation adjustment and the effect of changes in statutory tax rate.

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- Definition Total of the adjustments in a given period to allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 + Details
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