Commitments and Contingencies Legal Matters (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Sep. 30, 2011
Loss Contingencies [Line Items]
Loss Contingency In Dispute	$ 3.9
Litigation Settlement, Expense	45.0	$ 8.5
Loss Contingency, Range of Possible Loss, Maximum	44.0
Loss Contingency, Estimate of Possible Loss	$ 40.1