Consolidated Statements of Stockholders' Equity (Parenthetical) $ in Millions	Dec. 31, 2015 USD ($)
Adoption of ASC 606 \| Accounting Standards Update 2014-09 \| Adjustment
Cumulative effect adjustment	$ 41.7

Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption.

No definition available.

Name:	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant