Recent Accounting Developments (Details) - New Accounting Pronouncement, Early Adoption, Effect $ in Millions	12 Months Ended
Dec. 31, 2014 USD ($)
Deferred tax asset current
New Accounting Pronouncements or Change in Accounting Principle
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	$ (5.1)
Noncurrent deferred tax liability
New Accounting Pronouncements or Change in Accounting Principle
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	$ 5.1

Represents the quantification of the effect of adopting the new accounting standard or change in accounting principle expected by the entity to have a significant effect on the entity's financial statements.

No definition available.

Name:	us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoptionQuantification
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration