Derivatives and Hedging (Fair Value and Location of Derivative Financial Instruments in Consolidated Balance Sheets) (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2016	Mar. 31, 2015
Derivatives, Fair Value [Line Items]
Derivative Assets	¥ 5,605	¥ 4,058
Derivative Liabilities	950	2,933
Designated as Hedging Instrument \| Foreign currency forward contracts \| Other current assets
Derivatives, Fair Value [Line Items]
Derivative Assets	127	131
Designated as Hedging Instrument \| Foreign currency forward contracts \| Other current liabilities
Derivatives, Fair Value [Line Items]
Derivative Liabilities	98	104
Not Designated as Hedging Instrument \| Foreign currency forward contracts \| Other current assets
Derivatives, Fair Value [Line Items]
Derivative Assets	5,478	3,927
Not Designated as Hedging Instrument \| Foreign currency forward contracts \| Other current liabilities
Derivatives, Fair Value [Line Items]
Derivative Liabilities	¥ 852	¥ 2,829

Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 4D
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=51814546&loc=SL51823488-111719

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-Subparagraph (a),(c)
-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624163-113959

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 55
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=51825145&loc=SL20226000-175313

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