The Minimum Future Rentals on Non-Cancelable Operating Leases (Detail) (JPY ¥) In Millions, unless otherwise specified	Dec. 31, 2011	Mar. 31, 2011
Schedule of Operating Leases [Line Items]
Within one year	¥ 3,439	¥ 3,587
More than one year	24,048	26,302
Total	¥ 27,487	¥ 29,889

Operating Leases, Future Minimum Payments, Due in more than One Year

No definition available.

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- Details

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- Definition

The total of future contractually required payments on leases defined as operating.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 13

-Paragraph 122

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 13

-Paragraph 16

-Subparagraph b(i)

+ Details

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- Definition

For leases having an initial or remaining non-cancelable letter-terms in excess of one year, required rental payments due within one year of the balance sheet date relating to leases defined as operating.

+ References

+ Details

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