Income Taxes (Schedule of Unrecognized Tax Benefits) (Details) (JPY ¥) In Millions	12 Months Ended
Mar. 31, 2011	Mar. 31, 2010	Mar. 31, 2009
Income Taxes
Balance at beginning of year	¥ 200	¥ 6,759	¥ 6,950
Gross increase for tax positions taken in prior years	87	26	31
Gross decrease for tax positions taken in prior years	(9)	(2,029)	(23)
Settlements	(8)	(4,534)	(108)
Lapse of statute of limitations	(19)	(27)	(15)
Other	(28)	5	(76)
Balance at end of year	¥ 223	¥ 200	¥ 6,759

Unrecognized Tax Benefits Other

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The gross amount of unrecognized tax benefits (tax reductions recognized in financial reports but excluded from tax returns) pertaining to uncertain tax positions taken in tax returns as of the beginning balance sheet date, excluding amounts pertaining to examined tax returns.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name FASB Interpretation (FIN)
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The gross amount of decreases in unrecognized tax benefits resulting from tax positions taken in prior period tax returns, excluding amounts pertaining to examined tax returns.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name FASB Interpretation (FIN)
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The gross amount of decreases in unrecognized tax benefits resulting from settlements with taxing authorities.

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-Name FASB Interpretation (FIN)
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The gross amount of increases in unrecognized tax benefits resulting from tax positions taken in prior period tax returns, excluding amounts pertaining to examined tax returns.

+ References

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The gross amount of decreases in unrecognized tax benefits resulting from lapses of the applicable statutes of limitations.

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