Business Segment Information (Details 1) (USD $) In Millions, unless otherwise specified	12 Months Ended
Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Segment Reporting Information [Line Items]
Identifiable assets	$ 5,636.5	$ 5,284.9	$ 4,748.3
Depreciation and amortization	138.6	131.3	127.3
Components of Identifiable assets Depreciation and amortization and Capital expenditures for property
Purchase accounting depreciation and amortization	19.8	19.8	18.9
Total Segments [Member]
Segment Reporting Information [Line Items]
Depreciation and amortization	118.8	111.5	108.4
Capital expenditures for property	139.6	120.1	99.4
Architecture and Software [Member]
Segment Reporting Information [Line Items]
Identifiable assets	1,648.4	1,608.4	1,238.8
Depreciation and amortization	61.6	60.0	54.0
Capital expenditures for property	24.6	28.1	33.0
Control Products and Solutions [Member]
Segment Reporting Information [Line Items]
Identifiable assets	2,270.7	2,116.1	1,897.1
Depreciation and amortization	57.1	51.4	54.3
Capital expenditures for property	55.3	38.2	26.6
Corporate [Member]
Segment Reporting Information [Line Items]
Identifiable assets	1,717.4	1,560.4	1,612.4
Depreciation and amortization	0.1	0.1	0.1
Capital expenditures for property	$ 59.7	$ 53.8	$ 39.8

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Depreciation and amortization of basis adjustments recorded in conjunction with purchase accounting not allocated to the segments for purposes of determining operating earnings.

+ References

No definition available.

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- Definition

Total expenditures for additions to long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets of the reportable segment; if the amount: (a) is included in the determination of segment assets reviewed by the chief operating decision maker or (b) is otherwise regularly provided to the chief operating decision maker, even if not included in the determination of segment assets.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 131

-Paragraph 28

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 12

-Article 7

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

-Publisher FASB

-Name Statement of Financial Accounting Concepts (CON)

-Number 6

-Paragraph 25

-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 SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 18

-Article 5

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.18)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585

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