XML 70 R63.htm IDEA: XBRL DOCUMENT

Pension Plans And Other Post Retirement Benefits (Schedule Of Weighted-Average Key Assumptions Used For CDT Pension Plan) (Details) (CDT Pension Plan [Member])	3 Months Ended	12 Months Ended
	Sep. 30, 2011	Jun. 30, 2011
Defined Benefit Plan Disclosure [Line Items]
Salary increases	2.25%	2.25%
Pension increases	1.75%	1.50%
Discount rate	5.20%	5.25%
To Age 30 [Member]
Defined Benefit Plan Disclosure [Line Items]
Employee fluctuation rate	1.00%	1.00%
To Age 35 [Member]
Defined Benefit Plan Disclosure [Line Items]
Employee fluctuation rate	0.50%	0.50%
To Age 40 [Member]
Defined Benefit Plan Disclosure [Line Items]
Employee fluctuation rate	0.00%	0.00%
To Age 45 [Member]
Defined Benefit Plan Disclosure [Line Items]
Employee fluctuation rate	0.50%	0.50%
To Age 50 [Member]
Defined Benefit Plan Disclosure [Line Items]
Employee fluctuation rate	0.50%	0.50%
From Age 51 [Member]
Defined Benefit Plan Disclosure [Line Items]
Employee fluctuation rate	1.00%	1.00%