Significant Accounting Policies (Details) - Accounting Standards Update 2015-03 - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2015	Dec. 31, 2015
Corporate Expense
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Amortization of debt issuance costs	$ (0.2)
Interest Expense
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Amortization of debt issuance costs	$ 0.2
Debt
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred debt issuance costs		$ 5.6
Other Assets
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred debt issuance costs		$ (5.6)