Segment Reporting (Information for Long-Lived Assets Based on Physical Location) (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2014
Segment Reporting Information [Line Items]
Long-lived assets	¥ 264,487	¥ 261,491	¥ 270,557
Japan
Segment Reporting Information [Line Items]
Long-lived assets	182,793	173,683	180,342
Asia
Segment Reporting Information [Line Items]
Long-lived assets	43,785	49,936	49,140
Europe
Segment Reporting Information [Line Items]
Long-lived assets	16,661	16,153	21,395
United States of America
Segment Reporting Information [Line Items]
Long-lived assets	14,264	14,743	13,377
Other Countries
Segment Reporting Information [Line Items]
Long-lived assets	¥ 6,984	¥ 6,976	¥ 6,303

Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.13)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 13
-Subparagraph a
-Article 5

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 8
-Article 7

Name:	us-gaap_PropertyPlantAndEquipmentNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant