Sales Financing Receivables and Other Loan Receivables (Schedule of Finance Income and Expenses) (Details) (JPY ¥) In Millions	12 Months Ended
Mar. 31, 2011	Mar. 31, 2010	Mar. 31, 2009
Sales Financing Receivables and Other Loan Receivables
Finance income	¥ 20,128	¥ 21,364	¥ 23,242
Finance expenses	¥ 8,773	¥ 10,029	¥ 11,578

The aggregate financial services revenue and operating interest income earned during the reporting period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 1
-Article 5

Name:	us-gaap_FinancialServicesRevenue
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration