Lease Receivables - Additional Information (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
Mar. 31, 2016	Mar. 31, 2015
TA Triumph-Adler GmbH \| Cash Received from Transfer Included in Long-Term Debt
Leases Disclosure [Line Items]
Capital lease receivables	¥ 25,054	¥ 25,647
Minimum
Leases Disclosure [Line Items]
Lease receivable terms (in years)	1 year
Maximum
Leases Disclosure [Line Items]
Lease receivable terms (in years)	7 years

Carrying amount of financial assets accounted for as secured borrowings recognized in the transferor's statement of financial position at the end of each period presented.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 30
-Section 50
-Paragraph 1A
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=55761124&loc=SL6224234-111729

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