Unaudited Interim Information (Details) - New Accounting Pronouncement, Early Adoption, Effect $ in Millions	Sep. 30, 2015 USD ($)
Prepaid expenses, deferred costs and other current assets
New Accounting Pronouncement, Early Adoption [Line Items]
Deferred finance costs, current	$ (1.6)
Deferred credits and other assets
New Accounting Pronouncement, Early Adoption [Line Items]
Deferred finance costs, noncurrent	(6.8)
Long-term Debt
New Accounting Pronouncement, Early Adoption [Line Items]
Deferred finance costs, current	1.6
Deferred finance costs, noncurrent	$ 6.8