Commitments and Contingencies (Pace) (Narrative) (Details) (Pace, Florida [Member], USD $) In Millions, unless otherwise specified	9 Months Ended	12 Months Ended
	Jun. 30, 2012	Sep. 30, 2006 yr
Loss Contingencies [Line Items]
Accrual for environmental loss contingencies	$ 34.4	$ 42.0
Environmental loss contingencies estimated costs through completion, minimum		42
Environmental loss contingencies estimated costs through completion, maximum		52.0
Years to complete environmental remediation		20
Change in estimated exposure	0
Discontinued Operations [Member]
Loss Contingencies [Line Items]
Pretax expense recognized as a component of income from discontinued operations		$ 42.0