Acquisition [Tables]

12 Months Ended

Mar. 31, 2011

Acquisition (Tables) [Abstract]

Assets and liabilities acquired purchase price allocation for non controlling interest

	Millions of yen
Consideration
Cash and cash equivalents	¥	1,684
Fair value of total consideration transferred		1,684
Fair value of Komatsu’s equity interest in KACF held before the business combination		696
	¥	2,380
Recognized amounts of identifiable assets and liabilities assumed Current assets	¥	34,478
Property, plant and equipment		15,692
Intangible assets		2
Other assets		232
Total assets acquired		50,404
Current liabilities		(33,174	)
Long-term liabilities		(13,999	)
Total liabilities assumed		(47,173	)
Net assets acquired		3,231
Noncontrolling interest		(1,587	)
Goodwill		736
	¥	2,380