Income Taxes Change in Unrecognized Tax Benefits (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2014
Income Tax Disclosure [Abstract]
Estimated unrecognized tax benefit decrease, lower bound	$ 30.0
Estimated unrecognized tax benefit decrease, upper bound	$ 40.0

Amount of (increase) decrease reasonably possible in the estimated lower bound of the unrecognized tax benefit for a tax position taken or expected to be taken.

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)

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

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