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Contractual Guarantees, Litigation, Investigations, And Insurance (Narrative) (Details) (USD $) In Millions, except Per Share data	12 Months Ended
	Sep. 30, 2011	Sep. 30, 2002
Contractual Guarantees, Litigation, Investigations, And Insurance
Filing of suit to recover contract cost		$ 49.0
Expense related to SIVOM litigation	93.3
Claim receivable write-off	25.9
One-time loss associated with waste incineration project	$ 60.3
Net after-tax charge to earnings diluted per share	$ 0.48

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Claim Receivable Write Off

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Contractual Guarantees Litigation Investigations And Insurance Abstract

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Filing Of Suit To Recover Contract Cost

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- Definition

The net proceeds or assets obtained in excess of (less than) the net carrying amount of assets recorded, or assets distributed and liabilities assumed less than (in excess of) estimated litigation liability extinguished, in settlement of a litigation matter. Represents (for other than an insurance entity in its normal claims settlement process), the amount of income (expense) recognized in the period to settle pending or threatened litigation and insurance claims.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 5

-Paragraph 9, 10, 11, 12

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.



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-SubTopic 20

-Section 50

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Expressed in per-share terms, the dollar amount of the impact of a restatement of the results of operations of a prior period on the Diluted Earnings Per Share data given for the prior period or periods.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 260

-SubTopic 10

-Section 55

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-URI http://asc.fasb.org/extlink&oid=6945512&loc=d3e3842-109258



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

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-Number 128

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-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 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 154

-Paragraph 17, 18, 26

-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 4: http://www.xbrl.org/2003/role/presentationRef

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This element represents the expenses incurred by the entity which are directly related and attributable to receiving an award in settlement of litigation.

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