Inventories (Tables)

12 Months Ended

Mar. 31, 2011

Inventories (Tables) [Abstract]

Inventories

					Thousands of
	Millions of yen				U.S. dollars
	2011		2010		2011
Finished products, including finished parts held for sale	¥	294,807	¥	254,157	$	3,551,891
Work in process		135,167		102,096		1,628,518
Materials and supplies		43,902		40,163		528,940
Total	¥	473,876	¥	396,416	$	5,709,349