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Investments in and Loan Receivables from Affiliated Companies (Tables)
12 Months Ended
Mar. 31, 2011
Investments in and Loan Receivables from Affiliated Companies  
Schedule of Investments in and Loan Receivables
(¥ in millions)              

At March 31:

   2011      2010  

Investments

   ¥ 16,335       ¥ 15,667   

Loan receivables

     234         278   
                 
   ¥ 16,569       ¥ 15,945   
                 
Schedule of Financial Information of Affiliated Companies
(¥ in millions)              

At March 31:

   2011      2010  

Current assets

   ¥ 54,358       ¥ 55,958   

Noncurrent assets

     59,853         62,414   
                 

Total assets

     114,211         118,372   

Current liabilities

     59,068         61,495   

Noncurrent liabilities

     16,083         19,441   
                 

Net assets

   ¥ 39,060       ¥ 37,436   
                 
Schedule of Revenue and Net Income

(¥ in millions)

                    

For the years ended March 31:

   2011      2010      2009  

Revenues

   ¥ 222,694       ¥ 210,492       ¥ 216,430   

Cost of revenues

     162,836         155,350         160,690   

Net income

     1,442         873         419