Unaudited Interim Information (Details) - Accounting Standards Update 2015-03 $ in Millions	Sep. 30, 2015 USD ($)
Prepaid expenses, deferred costs and other current assets
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred finance costs, current	$ (1.7)
Deferred credits and other assets
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred finance costs, noncurrent	(6.0)
Long-term debt
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred finance costs, current	1.7
Deferred finance costs, noncurrent	$ 6.0