Commitments and Contingencies (Pace) (Narrative) (Details) (Pace, Florida [Member], USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Dec. 31, 2014	Sep. 30, 2006
Loss Contingencies [Line Items]
Accrual for environmental loss contingencies	$ 31.7	$ 42.0
Years to complete environmental remediation		20 years
Change in estimated exposure	0
Environmental loss contingencies estimated costs through completion, maximum		52
Environmental loss contingencies estimated costs through completion, minimum		42
Segment Discontinued Operations Member
Loss Contingencies [Line Items]
Pretax environmental expense		$ 42