Income Taxes Change in Unrecognized Tax Benefits (Details) $ in Millions	Sep. 30, 2015 USD ($)
Minimum
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Anticipated Decrease in Unrecognized Tax Benefits in Next 12 Months	$ 25.0
Maximum
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Anticipated Decrease in Unrecognized Tax Benefits in Next 12 Months	$ 35.0

Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (d)(3)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319

Name:	us-gaap_DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant