Environmental Environmental (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Loss Contingencies [Line Items]
Environmental Remediation Expense	$ 0.2	$ 4.2
Accrued Environmental Expense	7.2		$ 7.7
Accrued Environmental Expense, Noncurrent	5.7		6.1
Affiliated Entity [Member]
Loss Contingencies [Line Items]
Accrued Environmental Expense	$ 0.9		$ 6.4