Property & Equipment Summary (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
Sep. 30, 2013
Property And Equipment [Abstract]
Gross capital expenditures related to property and equipment	$ 30.9

Property, plant and equipment additions minus disposals plus or minus transfers and other changes equals the increase or decrease in property, plant and equipment for the period.

No definition available.

Name:	us-gaap_PropertyPlantAndEquipmentGrossPeriodIncreaseDecrease
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration