Summary of Significant Accounting Policies (New Accounting Pronouncement) (Details) - Accounting Standards Updates 2015-03 [Member] $ in Millions	Dec. 31, 2015 USD ($)
Prepaid Expenses and Other Current Assets [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred financing costs capitalized	$ (1.5)
Other Noncurrent Assets [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred financing costs capitalized	$ (10.6)