Investments in and Loan Receivables from Affiliated Companies (Schedule of Revenue and Net Income) (Details) (JPY ¥) In Millions	12 Months Ended
Mar. 31, 2011	Mar. 31, 2010	Mar. 31, 2009
Revenues	¥ 933,685	¥ 930,644	¥ 1,107,482
Cost of revenues	678,653	681,374	810,226
Net income	54,822	42,326	48,064
Affiliated Entity [Member]
Revenues	222,694	210,492	216,430
Cost of revenues	162,836	155,350	160,690
Net income	1,442	873	419
Trade notes and accounts receivable from affiliated companies	21,885	24,827
Revenues from affiliated companies	63,886	65,246	55,374
Cash dividends received from affiliated companies	69	72	46
Retained earnings include net undistributed earnings of affiliated companies	¥ 11,361	¥ 10,652

Undistributed Earnings of Affiliated Companies Net

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The aggregate cost of goods produced and sold and services rendered during the reporting period.

+ References

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The aggregate amount of receivables to be collected from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth, at the financial statement date. which are usually due within one year (or one business cycle).

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-Name Statement of Financial Accounting Standard (FAS)
-Number 57
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Amount of dividends or interest. Give totals for each group. If operations of any controlled companies are different in character from those of the company, group such affiliates (1) within divisions and (2) by type of activities.

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The portion of consolidated profit or loss for the period, net of income taxes, which is attributable to the parent. If the entity does not present consolidated financial statements, the amount of profit or loss for the period, net of income taxes.

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Revenues arising from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, such as pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's' management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

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Aggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains.

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