Restructuring and Other Charges, net (Accrual Activity Relating to Restructuring and Other Charges) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Restructuring [Roll Forward]
Balance at September 30, 2013	$ 5,421
Restructuring and other charges, net	3,837	3,275
Restructuring Reserve, Accrual Adjustment	841
Cash payments	3,868
Balance at December 31, 2013	6,231
Personnel
Restructuring [Roll Forward]
Balance at September 30, 2013	4,230
Restructuring and other charges, net	1,419	2,717
Restructuring Reserve, Accrual Adjustment	80
Cash payments	3,261
Balance at December 31, 2013	2,468
Facilities
Restructuring [Roll Forward]
Balance at September 30, 2013	1,191
Restructuring and other charges, net	2,418	558
Restructuring Reserve, Accrual Adjustment	761
Cash payments	607
Balance at December 31, 2013	$ 3,763