Allowance for Doubtful Accounts and Credit Losses (Schedule of Allowance for Doubtful Non-Current Receivables) (Details) (JPY ¥) In Millions	12 Months Ended
Mar. 31, 2011	Mar. 31, 2010	Mar. 31, 2009
Allowance for Doubtful Accounts and Credit Losses
Balance at beginning of year	¥ 770	¥ 859	¥ 981
Provision	259	59	50
Charge-offs	(93)	(74)	(1)
Other	(4)	(74)	(171)
Balance at end of year	¥ 932	¥ 770	¥ 859

Reflects the net amount of other additions and reductions in the allowance for doubtful noncurrent accounts receivable.

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- Definition

Allowance For Doubtful Accounts And Credit Losses [Abstract]

+ Details

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- Definition

Reduction to the allowance for doubtful noncurrent accounts receivable deemed uncollectible.

+ Details

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- Definition

Amount of the current period expense charged against operations, the offset which is generally to the allowance for doubtful noncurrent accounts receivable for the purpose of reducing receivables to an amount that approximates their net realizable value (the amount expected to be collected).

+ Details

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- Definition

A valuation allowance for receivables due to an Entity for more than one year from the balance sheet date that are expected to be uncollectible.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 4
-Article 5

+ Details

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