Document and Entity Information (USD $)	12 Months Ended
	Jun. 30, 2012	Jul. 31, 2012	Dec. 31, 2011
Document Document and Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Jun. 30, 2012
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	FY
Trading Symbol	PH
Entity Registrant Name	PARKER HANNIFIN CORP
Entity Central Index Key	0000076334
Current Fiscal Year End Date	--06-30
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		149,443,661
Entity Public Float			$ 11,403,595,331