Commitments and Contingencies Purchase Obligations (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012
Commitments and Contingencies Disclosure [Abstract]
Purchase Obligation, Due in Next Twelve Months	$ 635.5
Purchase Obligation, Due in Second and Third Year	6.1
Purchase Obligation, Due in Fourth and Fifth Year	3.3
Purchase Obligation, Due after Fifth Year	$ 2.4

Minimum amount of purchase arrangement maturing in the fourth and fifth fiscal years following the latest fiscal year. Includes, but not limited to, recorded and unrecorded purchase obligations, long-term purchase commitments, and short-term purchase commitments.

No definition available.

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