Restructuring Charges (Narrative) (Details) (USD $)	12 Months Ended
	Sep. 30, 2011	Sep. 30, 2009	Sep. 30, 2010
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 22,671,000
Severance costs		21,900,000
No. of employees associated with costs	382
Related to excess facilities.		800,000
Other current liabilities	469,391,000		452,994,000
Other long-term liabilities	97,293,000		77,295,000
Gross lease commitments related to restructured facilities	2,200,000
Net of committed sublease income	1,500,000
Employee Severance And Related Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		21,872,000
Facility Closures And Other Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 799,000