Document and Entity Information	6 Months Ended
	Dec. 31, 2011	Feb. 06, 2012
Document And Entity Information
Entity Registrant Name	PHARMACYCLICS INC
Entity Central Index Key	0000949699
Document Type	10-Q
Document Period End Date	Dec. 31, 2011
Amendment Flag	false
Current Fiscal Year End Date	--06-30
Is Entity a Well-known Seasoned Issuer?	No
Is Entity a Voluntary Filer?	No
Is Entity's Reporting Status Current?	Yes
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		68,808,352
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2012