Significant Accounting Policies (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Sep. 30, 2011 months years
Unbilled amounts billed and collected, collection period	12
Amortization of intangible assets year one	$ 40.5
Amortization of intangible assets year two	27.2
Amortization of intangible assets year three	24.6
Amortization of intangible assets year four	24.2
Amortization of intangible assets year five	$ 24.1
Stock performance multiplier, maximum	2
Stock performance multiplier, if ending Average Market Price of common stock less than 50 percent of beginning Average Market Price	0
Average Market Price of common stock	50.00%
Minimum [Member] \| Building [Member]
Estimated useful life minimum	20
Minimum [Member] \| Equipment [Member]
Estimated useful life minimum	3
Leasehold Improvements [Member]
Estimated useful life minimum	4
Estimated useful life maximum	10
Building [Member]
Estimated useful life maximum	40
Equipment [Member]
Estimated useful life maximum	10

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The amount of amortization expense expected to be recognized during year five of the five succeeding fiscal years.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 45

-Subparagraph a(3)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=6905858&loc=d3e16323-109275

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The maximum useful life of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

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