Commitments And Contingencies (Details) (USD $) In Millions, unless otherwise specified		9 Months Ended	3 Months Ended			3 Months Ended
	Jun. 30, 2011	Sep. 30, 2011 Financial Standby Letters Of Credit [Member]	Sep. 30, 2011 International Transactional Tax Exposures [Member]	Jun. 30, 2011 International Transactional Tax Exposures [Member]	Mar. 31, 2011 International Transactional Tax Exposures [Member]	Sep. 30, 2011 Supply Agreement [Member]	Jun. 30, 2011 Supply Agreement [Member]
Commitments And Contingencies [Line Items]
Number of irrevocable standby letters of credit		4
Irrevocable standby letters of credit, maximum amount outstanding		$ 5.5
Irrevocable standby letters of credit, amount outstanding		0
Loss contingency amount				2.0		5.3	4.0
Contingencies additional exposure					6.0
Tax payment			1.2
Aggregate range of reasonably possible losses, minimum	0
Aggregate range of reasonably possible losses, maximum	9.3
Accrued loss contingency						9.3
Loss contingency no longer possible			$ 6.0