Rockwell Automation (ROK) 10-Q 6 May 15 2015 Q2 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	6 Months Ended
	Mar. 31, 2015
Document Information [Line Items]
Entity Registrant Name	ROCKWELL AUTOMATION INC.
Entity Central Index Key	1024478
Document Type	10-Q
Document Period End Date	31-Mar-15
Amendment Flag	FALSE
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q2
Current Fiscal Year End Date	-21
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding	134,574,906

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheet (Unaudited) (USD $)	Mar. 31, 2015	Sep. 30, 2014
In Millions, unless otherwise specified
Current assets:
Cash and cash equivalents	$1,402.90	$1,191.30
Short-term investments	634.7	628.5
Receivables	1,060.30	1,215.80
Inventories	595.6	588.4
Deferred income taxes	152.8	163.5
Other current assets	199.7	146.7
Total current assets	4,046	3,934.20
Property, net of accumulated depreciation of $1,271.8 and $1,255.5, respectively	598	632.9
Goodwill	1,028.60	1,050.60
Other intangible assets, net	246.9	246.2
Deferred income taxes	191.5	205.7
Other assets	169.2	159.9
Total	6,280.20	6,229.50
Current liabilities:
Short-term debt	0	325
Accounts payable	515.4	520.6
Compensation and benefits	196.6	277.7
Advance payments from customers and deferred revenue	209.8	196.5
Customer returns, rebates and incentives	170.7	184
Other current liabilities	186.8	188.3
Total current liabilities	1,279.30	1,692.10
Long-term debt	1,505.40	905.6
Retirement benefits	726.3	767.9
Other liabilities	202.7	205.8
Commitments and contingent liabilities (Note 11)
Shareowners' equity:
Common stock ($1.00 par value, shares issued: 181.4)	181.4	181.4
Additional paid-in capital	1,527.10	1,512.30
Retained earnings	5,083.80	4,839.60
Accumulated other comprehensive loss	-1,040.70	-948
Common stock in treasury, at cost (shares held: March 31, 2015, 46.8; September 30, 2014, 44.7)	-3,185.10	-2,927.20
Total shareowners' equity	2,566.50	2,658.10
Total	$6,280.20	$6,229.50

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheet (Unaudited) (Parenthetical) (USD $)	Mar. 31, 2015	Sep. 30, 2014
In Millions, except Per Share data, unless otherwise specified
Accumulated depreciation	$1,271.80	$1,255.50
Common stock, par value per share	$1	$1
Common stock, shares issued	181.4	181.4
Treasury stock, shares	46.8	44.7

Condensed_Consolidated_Stateme

Condensed Consolidated Statement of Operations (Unaudited) (USD $)	3 Months Ended		6 Months Ended
In Millions, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014
Sales
Products and solutions	$1,394.50	$1,429.10	$2,804.30	$2,851.40
Services	156.3	171.4	320.9	340.8
Total sales	1,550.80	1,600.50	3,125.20	3,192.20
Cost of sales
Products and solutions	-768.6	-825.1	-1,545.40	-1,635.50
Services	-109	-119.6	-219.1	-237.2
Total cost of sales	-877.6	-944.7	-1,764.50	-1,872.70
Gross profit	673.2	655.8	1,360.70	1,319.50
Selling, general and administrative expenses	-382.4	-392.5	-769.3	-777.9
Other income	1.4	0.1	3.2	9.5
Interest expense	-15.7	-15	-30.6	-29.9
Income before income taxes	276.5	248.4	564	521.2
Income tax provision	-70.5	-68.1	-143.8	-142.8
Net income	$206	$180.30	$420.20	$378.40
Earnings Per Share, Basic [Abstract]
Basic	$1.53	$1.30	$3.10	$2.73
Earnings Per Share, Diluted [Abstract]
Diluted	$1.51	$1.28	$3.08	$2.70
Cash dividends per share	$0.65	$0.58	$1.30	$1.16
Weighted average outstanding shares:
Basic	134.9	138.5	135.3	138.5
Diluted	136	140.2	136.5	140.2

Condensed_Consolidated_Stateme1

Condensed Consolidated Statement of Comprehensive Income (Unaudited) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014
Comprehensive income
Net income	$206	$180.30	$420.20	$378.40
Other comprehensive income (loss), net of tax:
Pension and other postretirement benefit plan adjustments (net of tax expense of $9.2, $7.9, $18.4 and $15.7)	17.2	14.5	34.8	29.1
Currency translation adjustments	-67.7	5.1	-160.6	14.3
Net change in unrealized gains and losses on cash flow hedges (net of tax expense of $8.7, $0.4, $7.6 and $0.8)	25.7	-2	33.1	-1.3
Other comprehensive (loss) income	-24.8	17.6	-92.7	42.1
Comprehensive income	$181.20	$197.90	$327.50	$420.50

Condensed_Consolidated_Stateme2

Condensed Consolidated Statement of Comprehensive Income (Unaudited) (Parenthetical) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014
Other Comprehensive Income (Loss), Tax, Parenthetical Disclosures [Abstract]
Tax expense from pension and other postretirement benefit plan adjustments	$9.20	$7.90	$18.40	$15.70
Tax expense from net change in unrealized gains and losses on cash flow hedges	$8.70	$0.40	$7.60	$0.80

Condensed_Consolidated_Stateme3

Condensed Consolidated Statement of Cash Flows (Unaudited) (USD $)	6 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Operating activities:
Net income	$420.20	$378.40
Adjustments to arrive at cash provided by operating activities:
Depreciation	66.1	58.5
Amortization of intangible assets	13.6	15.8
Share-based compensation expense	21.2	21.9
Retirement benefit expense	71.3	66.5
Pension contributions	-21.3	-25.1
Net loss on disposition of property	0.2	0
Income tax benefit from the exercise of stock options	0	0.1
Excess income tax benefit from share-based compensation	-6.6	-18.6
Changes in assets and liabilities, excluding effects of acquisitions and foreign currency adjustments:
Receivables	81.2	-10.9
Inventories	-34.6	-57.1
Accounts payable	26.7	12.1
Advance payments from customers and deferred revenue	24.6	39.5
Compensation and benefits	-70.3	-32.9
Income taxes	-14	-37.3
Other assets and liabilities	-24.9	-4.6
Cash provided by operating activities	553.4	406.3
Investing activities:
Capital expenditures	-58	-58.3
Acquisition of business, net of cash acquired	-21.2	-81.5
Purchases of short-term investments	-338	-310.8
Proceeds from maturities of short-term investments	323.8	197.8
Proceeds from sale of property	0.2	0.2
Other investing activities	0	-3.4
Cash used for investing activities	-93.2	-256
Financing activities:
Net (repayment) issuance of short-term debt	-325	163.5
Issuance of long-term debt, net of discount and issuance costs	594.3	0
Cash dividends	-175.9	-160.9
Purchases of treasury stock	-293	-217.8
Proceeds from the exercise of stock options	22.7	83.9
Excess income tax benefit from share-based compensation	6.6	18.6
Other financing activities	-1.6	0
Cash used for financing activities	-171.9	-112.7
Effect of exchange rate changes on cash	-76.7	1.3
Increase in cash and cash equivalents	211.6	38.9
Cash and cash equivalents at beginning of period	1,191.30	1,200.90
Cash and cash equivalents at end of period	$1,402.90	$1,239.80

Basis_of_Presentation_and_Acco

Basis of Presentation and Accounting Policies	6 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
Basis of Presentation and Accounting Policies	Basis of Presentation and Accounting Policies
	In the opinion of management of Rockwell Automation, Inc. (the Company or Rockwell Automation), the unaudited Condensed Consolidated Financial Statements contain all adjustments necessary to present fairly the financial position, results of operations and cash flows for the periods presented and, except as otherwise indicated, such adjustments consist only of those of a normal recurring nature. These statements should be read in conjunction with our Annual Report on Form 10-K for the fiscal year ended September 30, 2014. The results of operations for the three and six month periods ended March 31, 2015 are not necessarily indicative of the results for the full year. All date references to years and quarters herein refer to our fiscal year and fiscal quarter unless otherwise stated.
	Receivables
	Receivables are stated net of an allowance for doubtful accounts of $23.2 million at March 31, 2015 and $19.4 million at September 30, 2014. In addition, receivables are stated net of an allowance for certain customer returns, rebates and incentives of $12.2 million at March 31, 2015 and $11.6 million at September 30, 2014.
	Earnings Per Share
	The following table reconciles basic and diluted earnings per share (EPS) amounts (in millions, except per share amounts):
		Three Months Ended						Six Months Ended
		March 31,						March 31,
		2015			2014			2015			2014
	Net income	$	206		$	180.3		$	420.2		$	378.4
	Less: Allocation to participating securities	(0.2		)	(0.2		)	(0.4		)	(0.5		)
	Net income available to common shareowners	$	205.8		$	180.1		$	419.8		$	377.9
	Basic weighted average outstanding shares	134.9			138.5			135.3			138.5
	Effect of dilutive securities
	Stock options	1.1			1.5			1.1			1.5
	Performance shares	—			0.2			0.1			0.2
	Diluted weighted average outstanding shares	136			140.2			136.5			140.2
	Earnings per share:
	Basic	$	1.53		$	1.3		$	3.1		$	2.73
	Diluted	$	1.51		$	1.28		$	3.08		$	2.7
	For the three and six months ended March 31, 2015, share-based compensation awards for 1.6 million shares and 1.7 million shares, respectively, were excluded from the diluted EPS calculation because they were antidilutive. For the three and six months ended March 31, 2014, share-based compensation awards for 0.9 million shares were excluded from the diluted EPS calculation because they were antidilutive.
	Recent Accounting Pronouncements
	In May 2014, the FASB issued a new standard on revenue recognition from contracts with customers. This standard supersedes nearly all existing revenue recognition guidance and involves a five-step approach to recognizing revenue based on individual performance obligations in a contract. The new standard will also require additional qualitative and quantitative disclosures about contracts with customers, significant judgments made in applying the revenue guidance, and assets recognized from the costs to obtain or fulfill a contract. This guidance is effective for us for reporting periods beginning October 1, 2017. We are currently evaluating the impact the adoption of this guidance will have on our consolidated financial statements and related disclosures.

ShareBased_Compensation

Share-Based Compensation	6 Months Ended
	Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share-Based Compensation	Share-Based Compensation
	We recognized $10.4 million and $21.2 million of pre-tax share-based compensation expense during the three and six months ended March 31, 2015, respectively. We recognized $10.4 million and $21.9 million of pre-tax share-based compensation expense during the three and six months ended March 31, 2014, respectively. Our annual grant of share-based compensation takes place during the first quarter of each fiscal year. The number of shares granted to employees and non-employee directors and the weighted average fair value per share during the periods presented were (in thousands except per share amounts):
		Six Months Ended March 31,
		2015			2014
		Grants	Wtd. Avg.		Grants	Wtd. Avg.
			Share			Share
			Fair Value			Fair Value
	Stock options	1,032	$	26.7	930	$	33.97
	Performance shares	87	103.7		69	108.48
	Restricted stock and restricted stock units	49	115.25		50	108.99
	Unrestricted stock	7	111.43		8	108.86

Inventories

Inventories	6 Months Ended
	Mar. 31, 2015
Inventory Disclosure [Abstract]
Inventories	Inventories
	Inventories consist of (in millions):
		March 31,		September 30,
		2015		2014
	Finished goods	$	252.1	$	240.3
	Work in process	160.5		156.9
	Raw materials, parts and supplies	183		191.2
	Inventories	$	595.6	$	588.4

Goodwill_and_Other_Intangible_

Goodwill and Other Intangible Assets	6 Months Ended
	Mar. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets
	Changes in the carrying amount of goodwill for the six months ended March 31, 2015 are (in millions):
		Architecture &			Control			Total
		Software			Products &
					Solutions
	Balance as of September 30, 2014	$	395.6		$	655		$	1,050.60
	Acquisition of business	—			14.9			14.9
	Translation and other	(8.5		)	(28.4		)	(36.9		)
	Balance as of March 31, 2015	$	387.1		$	641.5		$	1,028.60
	During the six months ended March 31, 2015, we recognized goodwill of $14.9 million and intangible assets of $5.4 million resulting from the acquisition of the assets of ESC Services, Inc., a global provider of lockout-tagout services and solutions. We assigned the full amount of goodwill related to ESC Services, Inc. to our Control Products & Solutions segment.
	Other intangible assets consist of (in millions):
		March 31, 2015
		Carrying			Accumulated			Net
		Amount			Amortization
	Amortized intangible assets:
	Computer software products	$	181.9		$	86		$	95.9
	Customer relationships	87.6			45.9			41.7
	Technology	83			40.2			42.8
	Trademarks	31.8			14.4			17.4
	Other	14.7			9.3			5.4
	Total amortized intangible assets	399			195.8			203.2
	Intangible assets not subject to amortization	43.7			—			43.7
	Total	$	442.7		$	195.8		$	246.9
		September 30, 2014
		Carrying			Accumulated			Net
		Amount			Amortization
	Amortized intangible assets:
	Computer software products	$	169.1		$	82.5		$	86.6
	Customer relationships	89.8			45.4			44.4
	Technology	84			38.2			45.8
	Trademarks	33.7			14			19.7
	Other	15.5			9.5			6
	Total amortized intangible assets	392.1			189.6			202.5
	Intangible assets not subject to amortization	43.7			—			43.7
	Total	$	435.8		$	189.6		$	246.2
	The Allen-Bradley® trademark has an indefinite life and therefore is not subject to amortization.
	Estimated amortization expense is $28.9 million in 2015, $30.5 million in 2016, $26.4 million in 2017, $20.3 million in 2018 and $16.9 million in 2019.
	We performed the annual evaluation of our goodwill and indefinite life intangible assets for impairment as required by accounting principles generally accepted in the United States (U.S. GAAP) during the second quarter of 2015 and concluded that these assets are not impaired.

Longterm_and_Shortterm_Debt

Long-term and Short-term Debt	6 Months Ended
	Mar. 31, 2015
Debt Disclosure [Abstract]
Long-term and Short-term Debt	Long-term and Short-term Debt
	Long-term debt consists of (in millions):
		March 31,			September 30,
		2015			2014
	5.65% notes, payable in December 2017	$	250		$	250
	2.050% notes, payable in March 2020	301.1			—
	2.875% notes, payable in March 2025	299.3			—
	6.70% debentures, payable in January 2028	250			250
	6.25% debentures, payable in December 2037	250			250
	5.20% debentures, payable in January 2098	200			200
	Unamortized discount and other	(45.0		)	(44.4		)
	Long-term debt	$	1,505.40		$	905.6
	In February 2015, we issued $600.0 million of aggregate principal amount of long-term notes in a public offering. The offering consisted of $300.0 million in 2.050% notes payable in March 2020 (2020 Notes) and $300.0 million in 2.875% notes payable in March 2025 (2025 Notes), both issued at a discount. This debt offering yielded $594.3 million in net proceeds. We used the net proceeds from the offering primarily to repay our outstanding commercial paper, with the remaining proceeds to be used for general corporate purposes.
	Upon issuance of these notes, we entered into fixed-to-floating interest rate swap contracts with multiple banks that effectively converted the $600.0 million aggregate principal amount of our 2020 Notes and 2025 Notes to floating rate debt, each at a rate based on three-month LIBOR plus a fixed spread. The effective floating interest rates were 0.715 percent for the 2020 Notes and 1.125 percent for the 2025 Notes at March 31, 2015. We have designated these swaps as fair value hedges. The aggregate fair value of the interest rate swap contracts at March 31, 2015 was a net unrealized gain of $0.4 million. The individual contracts were recorded in other assets and other liabilities on the Condensed Consolidated Balance Sheet with corresponding adjustments to the carrying value of the underlying debt. Additional information related to our interest rate swap contracts is included in Note 8.
	Our short-term debt obligations are primarily comprised of commercial paper borrowings. There were no commercial paper borrowings outstanding at March 31, 2015. Commercial paper borrowings outstanding were $325.0 million at September 30, 2014. The weighted average interest rate of the commercial paper outstanding was 0.17 percent at September 30, 2014.
	On March 24, 2015, we replaced our former five-year $750.0 million unsecured revolving credit facility with a new five-year $1.0 billion unsecured revolving credit facility expiring in March 2020. We can increase the aggregate amount of this credit facility by up to $350.0 million, subject to the consent of the banks in the credit facility. We have not borrowed against either credit facility during the periods ended March 31, 2015 or September 30, 2014.

Other_Current_Liabilities

Other Current Liabilities	6 Months Ended
	Mar. 31, 2015
Other Liabilities Disclosure [Abstract]
Other Current Liabilities	Other Current Liabilities
	Other current liabilities consist of (in millions):
		March 31,		September 30,
		2015		2014
	Unrealized losses on foreign exchange contracts	$	21.4	$	5.8
	Product warranty obligations	32.5		34.1
	Taxes other than income taxes	32.2		37.2
	Accrued interest	17.4		15.6
	Income taxes payable	33.9		41
	Other	49.4		54.6
	Other current liabilities	$	186.8	$	188.3

Product_Warranty_Obligations

Product Warranty Obligations	6 Months Ended
	Mar. 31, 2015
Product Warranties Disclosures [Abstract]
Product Warranty Obligations	Product Warranty Obligations
	We record a liability for product warranty obligations at the time of sale to a customer based upon historical warranty experience. Most of our products are covered under a warranty period that runs for twelve months from either the date of sale or installation. We also record a liability for specific warranty matters when they become probable and reasonably estimable. Our product warranty obligations are included in other current liabilities in the Condensed Consolidated Balance Sheet.
	Changes in product warranty obligations for the six months ended March 31, 2015 and 2014 are (in millions):
		Six Months Ended
		March 31,
		2015			2014
	Balance at beginning of period	$	34.1		$	36.9
	Accruals for warranties issued during the current period	13.5			15.4
	Adjustments to pre-existing warranties	(0.6		)	(1.3		)
	Settlements of warranty claims	(14.5		)	(14.0		)
	Balance at end of period	$	32.5		$	37

Derivative_Instruments_and_Fai

Derivative Instruments and Fair Value Measurement	6 Months Ended
	Mar. 31, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments and Fair Value Measurement	Derivative Instruments and Fair Value Measurement
	We use foreign currency forward exchange contracts and foreign currency denominated debt obligations to manage certain foreign currency risks. We also use interest rate swap contracts to manage risks associated with interest rate fluctuations. The following information explains how we use and value these types of derivative instruments and how they impact our Condensed Consolidated Financial Statements.
	Additional information related to hedging instruments associated with our long-term debt is included in Note 5. Additional information related to the impacts of cash flow hedges on other comprehensive income is included in Note 10.
	Types of Derivative Instruments and Hedging Activities
	Cash Flow Hedges
	We enter into foreign currency forward exchange contracts to hedge our exposure to foreign currency exchange rate variability in the expected future cash flows associated with certain third-party and intercompany transactions denominated in foreign currencies forecasted to occur within the next two years (cash flow hedges). We report in other comprehensive income (loss) the effective portion of the gain or loss on derivative financial instruments that we designate and that qualify as cash flow hedges. We reclassify these gains or losses into earnings in the same periods when the hedged transactions affect earnings. To the extent forward exchange contracts designated as cash flow hedges are ineffective, changes in value are recorded in earnings through the maturity date. There was no impact on earnings due to ineffective cash flow hedges. At March 31, 2015, we had a U.S. dollar-equivalent gross notional amount of $736.3 million of foreign currency forward exchange contracts designated as cash flow hedges.
	The pre-tax amount of gains (losses) recorded in other comprehensive income related to cash flow hedges that would have been recorded in the Condensed Consolidated Statement of Operations had they not been so designated was (in millions):
		Three Months Ended								Six Months Ended
		March 31,								March 31,
		2015				2014				2015			2014
	Forward exchange contracts	$	39.8			$	(0.7	)		$	50.7		$	0.9
	The pre-tax amount of (losses) gains reclassified from accumulated other comprehensive loss into the Condensed Consolidated Statement of Operations related to derivative forward exchange contracts designated as cash flow hedges, which offset the related gains and losses on the hedged items during the periods presented, was (in millions):
		Three Months Ended								Six Months Ended
		March 31,								March 31,
		2015				2014				2015			2014
	Sales	$	(2.4	)		$	(0.8	)		$	(3.6	)	$	(1.0	)
	Cost of sales	7.8				1.7				13.6			2.4
	Total	$	5.4			$	0.9			$	10		$	1.4
	Approximately $44.0 million ($38.9 million after tax) of net unrealized gains on cash flow hedges as of March 31, 2015 will be reclassified into earnings during the next 12 months. We expect that these net unrealized gains will be offset when the hedged items are recognized in earnings.
	Net Investment Hedges
	We use foreign currency forward exchange contracts and foreign currency denominated debt obligations to hedge portions of our net investments in non-U.S. subsidiaries (net investment hedges) against the effect of exchange rate fluctuations on the translation of foreign currency balances to the U.S. dollar. For all instruments that are designated as net investment hedges and meet effectiveness requirements, the net changes in value of the designated hedging instruments are recorded in accumulated other comprehensive loss within shareowners’ equity where they offset gains and losses recorded on our net investments globally. To the extent forward exchange contracts or foreign currency denominated debt designated as net investment hedges are ineffective, changes in value are recorded in earnings through the maturity date. There was no impact on earnings due to ineffective net investment hedges. At March 31, 2015, we had a gross notional amount of $452.1 million of foreign currency forward exchange contracts and $13.4 million of foreign currency denominated debt designated as net investment hedges.
	The pre-tax amount of (losses) gains recorded in other comprehensive income related to net investment hedges that would have been recorded in the Condensed Consolidated Statement of Operations had they not been so designated was (in millions):
		Three Months Ended								Six Months Ended
		March 31,								March 31,
		2015				2014				2015			2014
	Forward exchange contracts	$	(6.4	)		$	—			$	(6.4	)	$	—
	Foreign currency denominated debt	0.6				(0.2		)		1.3			(0.5		)
	Total	$	(5.8	)		$	(0.2	)		$	(5.1	)	$	(0.5	)
	Fair Value Hedges
	We use interest rate swap contracts to manage the borrowing costs of certain long-term debt. In February 2015, we issued $600.0 million in aggregate principal amount of fixed rate notes. Upon issuance of these notes, we entered into fixed-to-floating interest rate swap contracts that effectively convert these notes from fixed rate debt to floating rate debt. We designate these contracts as fair value hedges because they hedge the changes in fair value of the fixed rate notes resulting from changes in interest rates. The changes in value of these fair value hedges are recorded as gains or losses in interest expense and are offset by the losses or gains on the underlying debt instruments, which are also recorded in interest expense. There was no impact on earnings due to ineffective fair value hedges. At March 31, 2015, the aggregate notional value of our interest rate swaps designated as fair value hedges was $600.0 million.
	The pre-tax amount of net gains recognized within the Condensed Consolidated Statement of Operations related to derivative instruments designated as fair value hedges, which fully offset the related net losses on the hedged debt instruments during the periods presented, was (in millions):
		Three Months Ended								Six Months Ended
		March 31,								March 31,
		2015				2014				2015			2014
	Interest expense	$	0.4			$	—			$	0.4		$	—
	Derivatives Not Designated as Hedging Instruments
	Certain of our locations have assets and liabilities denominated in currencies other than their functional currencies resulting from intercompany loans and other transactions with third parties denominated in foreign currencies. We enter into foreign currency forward exchange contracts that we do not designate as hedging instruments to offset the transaction gains or losses associated with some of these assets and liabilities. Gains and losses on derivative financial instruments for which we do not elect hedge accounting are recognized in the Condensed Consolidated Statement of Operations in each period, based on the change in the fair value of the derivative financial instruments. At March 31, 2015, we had a U.S. dollar-equivalent gross notional amount of $223.6 million of foreign currency forward exchange contracts not designated as hedging instruments.
	The pre-tax amount of gains from forward exchange contracts not designated as hedging instruments recognized in the Condensed Consolidated Statement of Operations was (millions):
		Three Months Ended								Six Months Ended
		March 31,								March 31,
		2015				2014				2015			2014
	Other income	$	13.7			$	2.6			$	15.3		$	6.5
	Fair Value of Financial Instruments
	U.S. GAAP defines fair value as the price that would be received for an asset or paid to transfer a liability (exit price) in an orderly transaction between market participants in the principal or most advantageous market for the asset or liability. U.S. GAAP also classifies the inputs used to measure fair value into the following hierarchy:
	Level 1:	Quoted prices in active markets for identical assets or liabilities.
	Level 2:	Quoted prices in active markets for similar assets or liabilities, quoted prices for identical or similar assets or liabilities in markets that are not active, or inputs other than quoted prices that are observable for the asset or liability.
	Level 3:	Unobservable inputs for the asset or liability.
	We recognize all derivative financial instruments as either assets or liabilities at fair value in the Consolidated Balance Sheet. We value our forward exchange contracts using a market approach. We use a valuation model based on observable market inputs including forward and spot prices for currency and interest rate curves. We did not change our valuation techniques during the three months ended March 31, 2015. It is our policy to execute such instruments with major financial institutions that we believe to be creditworthy and not to enter into derivative financial instruments for speculative purposes. We diversify our foreign currency forward exchange contracts among counterparties to minimize exposure to any one of these entities. Our foreign currency forward exchange contracts are usually denominated in currencies of major industrial countries. The U.S. dollar-equivalent gross notional amount of our forward exchange contracts totaled $1,412.0 million at March 31, 2015. Currency pairs (buy/sell) comprising the most significant contract notional values were United States dollar (USD)/euro, USD/Swiss franc, USD/Canadian dollar, Swiss franc/euro, Mexican peso/USD, Singapore dollar/USD, and Swiss franc/Canadian dollar.
	We value interest rate swap contracts using a market approach based on observable market inputs including publicized swap curves.
	Assets and liabilities measured at fair value on a recurring basis and their location in our Condensed Consolidated Balance Sheet were (in millions):
				Fair Value (Level 2)
	Derivatives Designated as Hedging Instruments	Balance Sheet Location		March 31,				September 30,
				2015				2014
	Forward exchange contracts	Other current assets		$	49.2			$	13.1
	Forward exchange contracts	Other assets		11.6				5
	Forward exchange contracts	Other current liabilities		(18.8		)		(4.1		)
	Forward exchange contracts	Other liabilities		(0.8		)		(0.3		)
	Interest rate swap contracts	Other assets		1.1				—
	Interest rate swap contracts	Other liabilities		(0.7		)		—
	Total			$	41.6			$	13.7
				Fair Value (Level 2)
	Derivatives Not Designated as Hedging Instruments	Balance Sheet Location		March 31,				September 30,
				2015				2014
	Forward exchange contracts	Other current assets		$	21.4			$	3.5
Forward exchange contracts	Other current liabilities		(2.6		)		(1.8		)
Total			$	18.8			$	1.7
We also hold financial instruments consisting of cash, short-term investments, short-term debt and long-term debt. The fair values of our cash, short-term investments and short-term debt approximate their carrying amounts as reported in our Condensed Consolidated Balance Sheet due to the short-term nature of these instruments.
We base the fair value of long-term debt upon quoted market prices for the same or similar issues. The fair value of long-term debt below considers the terms of the debt excluding the impact of derivative and hedging activity. The carrying amount of a portion of our long-term debt is impacted by fixed-to-floating interest rate swap contracts that are designated as fair value hedges.
The following table presents the carrying amounts and estimated fair values of financial instruments not measured at fair value in the Condensed Consolidated Balance Sheet (in millions):
	March 31, 2015
					Fair Value
	Carrying Amount				Total				Level 1			Level 2			Level 3
Cash and cash equivalents	$	1,402.90			$	1,402.90			$	1,381.50		$	21.4		$	—
Short-term investments	634.7				634.7				—			634.7			—
Short-term debt	—				—				—			—			—
Long-term debt	1,505.40				1,769.10				—			1,769.10			—
	September 30, 2014
					Fair Value
	Carrying Amount				Total				Level 1			Level 2			Level 3
Cash and cash equivalents	$	1,191.30			$	1,191.30			$	1,154.20		$	37.1		$	—
Short-term investments	628.5				628.5				—			628.5			—
Short-term debt	325				325				—			325			—
Long-term debt	905.6				1,119.40				—			1,119.40			—

Retirement_Benefits

Retirement Benefits	6 Months Ended
	Mar. 31, 2015
Compensation and Retirement Disclosure [Abstract]
Retirement Benefits	Retirement Benefits
	The components of net periodic benefit cost are (in millions):
		Pension Benefits
		Three Months Ended						Six Months Ended
		March 31,						March 31,
		2015			2014			2015			2014
	Service cost	$	21.5		$	19.6		$	43.2		$	39.3
	Interest cost	41.6			43.6			83.9			87.2
	Expected return on plan assets	(55.8		)	(54.5		)	(111.9		)	(109.0		)
	Amortization:
	Prior service credit	(0.6		)	(0.7		)	(1.3		)	(1.4		)
	Net actuarial loss	29.6			24.9			59.6			49.8
	Net periodic benefit cost	$	36.3		$	32.9		$	73.5		$	65.9
		Other Postretirement Benefits
		Three Months Ended						Six Months Ended
		March 31,						March 31,
		2015			2014			2015			2014
	Service cost	$	0.4		$	0.5		$	0.8		$	1
	Interest cost	1.1			1.6			2.1			3.2
	Amortization:
	Prior service credit	(3.7		)	(2.7		)	(7.4		)	(5.2		)
	Net actuarial loss	1.1			0.9			2.3			1.6
	Net periodic benefit cost	$	(1.1	)	$	0.3		$	(2.2	)	$	0.6

Accumulated_Other_Comprehensiv

Accumulated Other Comprehensive Loss	6 Months Ended
	Mar. 31, 2015
Accumulated Other Comprehensive Loss [Abstract]
Accumulated Other Comprehensive Loss	Accumulated Other Comprehensive Loss
	Changes in accumulated other comprehensive loss by component were (in millions):
	Three Months Ended March 31, 2015
		Pension and other postretirement benefit plan adjustments,			Accumulated currency translation adjustments,			Net unrealized gains (losses) on cash flow hedges, net of tax			Total accumulated other comprehensive loss, net of tax
		net of tax			net of tax
	Balance as of December 31, 2014	$	(891.8	)	$	(145.4	)	$	21.3		$	(1,015.9	)
	Other comprehensive (loss) income before reclassifications	—			(67.7		)	31.4			(36.3		)
	Amounts reclassified from accumulated other comprehensive loss	17.2			—			(5.7		)	11.5
	Other comprehensive income (loss)	17.2			(67.7		)	25.7			(24.8		)
	Balance as of March 31, 2015	$	(874.6	)	$	(213.1	)	$	47		$	(1,040.7	)
	Six Months Ended March 31, 2015
		Pension and other postretirement benefit plan adjustments,			Accumulated currency translation adjustments,			Net unrealized gains (losses) on cash flow hedges, net of tax			Total accumulated other comprehensive loss, net of tax
		net of tax			net of tax
	Balance as of September 30, 2014	$	(909.4	)	$	(52.5	)	$	13.9		$	(948.0	)
	Other comprehensive (loss) income before reclassifications	—			(160.6		)	43.6			(117.0		)
	Amounts reclassified from accumulated other comprehensive loss	34.8			—			(10.5		)	24.3
	Other comprehensive income (loss)	34.8			(160.6		)	33.1			(92.7		)
	Balance as of March 31, 2015	$	(874.6	)	$	(213.1	)	$	47		$	(1,040.7	)
	Three Months Ended March 31, 2014
		Pension and other postretirement benefit plan adjustments,			Accumulated currency translation adjustments,			Net unrealized gains (losses) on cash flow hedges, net of tax			Total accumulated other comprehensive loss, net of tax
		net of tax			net of tax
	Balance as of December 31, 2013	$	(809.2	)	$	18		$	(2.0	)	$	(793.2	)
	Other comprehensive income (loss) before reclassifications	—			5.1			(2.0		)	3.1
	Amounts reclassified from accumulated other comprehensive loss	14.5			—			—			14.5
	Other comprehensive income (loss)	14.5			5.1			(2.0		)	17.6
	Balance as of March 31, 2014	$	(794.7	)	$	23.1		$	(4.0	)	$	(775.6	)
	Six Months Ended March 31, 2014
		Pension and other postretirement benefit plan adjustments,			Accumulated currency translation adjustments,			Net unrealized gains (losses) on cash flow hedges, net of tax			Total accumulated other comprehensive loss, net of tax
		net of tax			net of tax
	Balance as of September 30, 2013	$	(823.8	)	$	8.8		$	(2.7	)	$	(817.7	)
	Other comprehensive income (loss) before reclassifications	—			14.3			(1.0		)	13.3
	Amounts reclassified from accumulated other comprehensive loss	29.1			—			(0.3		)	28.8
	Other comprehensive income (loss)	29.1			14.3			(1.3		)	42.1
	Balance as of March 31, 2014	$	(794.7	)	$	23.1		$	(4.0	)	$	(775.6	)
	10. Accumulated Other Comprehensive Loss (continued)
	The reclassifications out of accumulated other comprehensive loss to the Consolidated Statement of Operations were (in millions):
		Three Months Ended						Six Months Ended						Affected Line in the Consolidated Statement of Operations
		March 31,						March 31,
		2015			2014			2015			2014
	Pension and other postretirement benefit plan adjustments:
	Amortization of prior service credit	$	(4.3	)	$	(3.4	)	$	(8.7	)	$	(6.6	)	(a)
	Amortization of net actuarial loss	30.7			25.8			61.9			51.4			(a)
		26.4			22.4			53.2			44.8			Total before tax
		(9.2		)	(7.9		)	(18.4		)	(15.7		)	Provision for tax
		$	17.2		$	14.5		$	34.8		$	29.1		After tax
	Net unrealized losses (gains) on cash flow hedges:
	Forward exchange contracts	$	2.4		$	0.8		$	3.6		$	1		Sales
	Forward exchange contracts	(7.8		)	(1.7		)	(13.6		)	(2.4		)	Cost of Sales
		(5.4		)	(0.9		)	(10.0		)	(1.4		)	Total before tax
		(0.3		)	0.9			(0.5		)	1.1			Provision for tax
		$	(5.7	)	$	—		$	(10.5	)	$	(0.3	)	After tax
	Total reclassifications	$	11.5		$	14.5		$	24.3		$	28.8		After tax
	(a) Reclassified from accumulated other comprehensive loss into cost of sales and selling, general and administrative expenses. These components are included in the computation of net periodic benefit costs. See Note 9 for further information.

Commitments_and_Contingent_Lia

Commitments and Contingent Liabilities	6 Months Ended
	Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingent Liabilities	Commitments and Contingent Liabilities
	Various lawsuits, claims and proceedings have been or may be instituted or asserted against us relating to the conduct of our business, including those pertaining to product liability, environmental, safety and health, intellectual property, employment and contract matters. Although the outcome of litigation cannot be predicted with certainty and some lawsuits, claims or proceedings may be disposed of unfavorably to us, we believe the disposition of matters that are pending or have been asserted will not have a material effect on our business, financial condition or results of operations.
	We (including our subsidiaries) have been named as a defendant in lawsuits alleging personal injury as a result of exposure to asbestos that was used in certain components of our products many years ago. Currently there are a few thousand claimants in lawsuits that name us as defendants, together with hundreds of other companies. In some cases, the claims involve products from divested businesses, and we are indemnified for most of the costs. However, we have agreed to defend and indemnify asbestos claims associated with products manufactured or sold by our former Dodge mechanical and Reliance Electric motors and motor repair services businesses prior to their divestiture by us, which occurred on January 31, 2007. We are also responsible for half of the costs and liabilities associated with asbestos cases against the former Rockwell International Corporation’s (RIC’s) divested measurement and flow control business. But in all cases, for those claimants who do show that they worked with our products or products of divested businesses for which we are responsible, we nevertheless believe we have meritorious defenses, in substantial part due to the integrity of the products, the encapsulated nature of any asbestos-containing components, and the lack of any impairing medical condition on the part of many claimants. We defend those cases vigorously. Historically, we have been dismissed from the vast majority of these claims with no payment to claimants.
	We have maintained insurance coverage that we believe covers indemnity and defense costs, over and above self-insured retentions, for claims arising from our former Allen-Bradley subsidiary. Our insurance carrier entered into a cost share agreement with us to pay the substantial majority of future defense and indemnity costs for Allen-Bradley asbestos claims. We believe that this arrangement will continue to provide coverage for Allen-Bradley asbestos claims throughout the remaining life of the asbestos liability.
	The uncertainties of asbestos claim litigation make it difficult to predict accurately the ultimate outcome of asbestos claims. That uncertainty is increased by the possibility of adverse rulings or new legislation affecting asbestos claim litigation or the settlement process. Subject to these uncertainties and based on our experience defending asbestos claims, we do not believe these lawsuits will have a material effect on our financial condition or results of operations.
	We have, from time to time, divested certain of our businesses. In connection with these divestitures, certain lawsuits, claims and proceedings may be instituted or asserted against us related to the period that we owned the businesses, either because we agreed to retain certain liabilities related to these periods or because such liabilities fall upon us by operation of law. In some instances, the divested business has assumed the liabilities; however, it is possible that we might be responsible to satisfy those liabilities if the divested business is unable to do so.
	In connection with the spin-offs of our former automotive component systems business, semiconductor systems business and Rockwell Collins avionics and communications business, the spun-off companies have agreed to indemnify us for substantially all contingent liabilities related to the respective businesses, including environmental and intellectual property matters.
	In connection with the sale of our Dodge mechanical and Reliance Electric motors and motor repair services businesses, we agreed to indemnify Baldor Electric Company for costs and damages related to certain legal, legacy environmental and asbestos matters of these businesses arising before January 31, 2007, for which the maximum exposure would be capped at the amount received for the sale.
	In many countries we provide a limited intellectual property indemnity as part of our terms and conditions of sale. We also at times provide limited intellectual property indemnities in other contracts with third parties, such as contracts concerning the development and manufacture of our products. As of March 31, 2015, we were not aware of any material indemnification claims that were probable or reasonably possible of an unfavorable outcome. Historically, claims that have been made under the indemnification agreements have not had a material impact on our operating results, financial position or cash flows; however, to the extent that valid indemnification claims arise in the future, future payments by us could be significant and could have a material adverse effect on our results of operations or cash flows in a particular period.

Income_Taxes

Income Taxes	6 Months Ended
	Mar. 31, 2015
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes
	At the end of each interim period, we estimate a base effective tax rate that we expect for the full fiscal year based on our most recent forecast of pre-tax income, permanent book and tax differences and global tax planning strategies. We use this base rate to provide for income taxes on a year-to-date basis, excluding the effect of significant unusual or extraordinary items and items that are reported net of their related tax effects. We record the tax effect of significant unusual or extraordinary items and items that are reported net of their tax effects in the period in which they occur.
	The effective tax rate was 25.5 percent in the three and six months ended March 31, 2015. The effective tax rate was 27.4 percent in the three and six months ended March 31, 2014. The effective tax rate was lower than the U.S. statutory rate of 35 percent in each period primarily because we benefited from lower non-U.S. tax rates.
	The amount of gross unrecognized tax benefits was $40.5 million and $38.9 million at March 31, 2015 and September 30, 2014, respectively, of which the entire amount would reduce our effective tax rate if recognized.
	Accrued interest and penalties related to unrecognized tax benefits were $5.6 million and $8.1 million at March 31, 2015 and September 30, 2014, respectively. We recognize interest and penalties related to unrecognized tax benefits in the income tax provision.
	If the unrecognized tax benefits were recognized, the net reduction to our income tax provision, including the recognition of interest and penalties and offsetting tax assets, would be $22.3 million as of March 31, 2015.
	There was no material change in the amount of unrecognized tax benefits in the six months ended March 31, 2015. We believe it is reasonably possible that the amount of gross unrecognized tax benefits could be reduced by up to $20.5 million in the next 12 months as a result of the resolution of tax matters in various global jurisdictions and the lapses of statutes of limitations. If all of the unrecognized tax benefits were recognized, the net reduction to our income tax provision, including the recognition of interest and penalties and offsetting tax assets, could be up to $3.1 million.
	We conduct business globally and are routinely audited by the various tax jurisdictions in which we operate. We are no longer subject to U.S. federal income tax examinations for years before 2012 and are no longer subject to state, local and foreign income tax examinations for years before 2003.

Business_Segment_Information

Business Segment Information	6 Months Ended
	Mar. 31, 2015
Segment Reporting [Abstract]
Business Segment Information	Business Segment Information
	The following tables reflect the sales and operating results of our reportable segments (in millions):
		Three Months Ended						Six Months Ended
		March 31,						March 31,
		2015			2014			2015			2014
	Sales
	Architecture & Software	$	674.3		$	686.8		$	1,382.10		$	1,382.70
	Control Products & Solutions	876.5			913.7			1,743.10			1,809.50
	Total	$	1,550.80		$	1,600.50		$	3,125.20		$	3,192.20
	Segment operating earnings
	Architecture & Software	$	200.8		$	190.2		$	422.2		$	402.1
	Control Products & Solutions	133.4			111.9			258.8			228
	Total	334.2			302.1			681			630.1
	Purchase accounting depreciation and amortization	(5.2		)	(5.8		)	(10.6		)	(10.4		)
	General corporate – net	(21.4		)	(18.9		)	(44.2		)	(40.6		)
	Non-operating pension costs	(15.4		)	(14.0		)	(31.6		)	(28.0		)
	Interest expense	(15.7		)	(15.0		)	(30.6		)	(29.9		)
	Income before income taxes	$	276.5		$	248.4		$	564		$	521.2
	Among other considerations, we evaluate performance and allocate resources based upon segment operating earnings before income taxes, interest expense, costs related to corporate offices, non-operating pension costs, certain nonrecurring corporate initiatives, gains and losses from the disposition of businesses and purchase accounting depreciation and amortization. Depending on the product, intersegment sales within a single legal entity are either at cost or cost plus a mark-up, which does not necessarily represent a market price. Sales between legal entities are at an appropriate transfer price. We allocate costs related to shared segment operating activities to the segments using a methodology consistent with the expected benefit.

Basis_of_Presentation_and_Acco1

Basis of Presentation and Accounting Policies (Policies)	6 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
Receivables	Receivables
	Receivables are stated net of an allowance for doubtful accounts of $23.2 million at March 31, 2015 and $19.4 million at September 30, 2014. In addition, receivables are stated net of an allowance for certain customer returns, rebates and incentives of $12.2 million at March 31, 2015 and $11.6 million at September 30, 2014.
Recent accounting pronouncements	Recent Accounting Pronouncements
	In May 2014, the FASB issued a new standard on revenue recognition from contracts with customers. This standard supersedes nearly all existing revenue recognition guidance and involves a five-step approach to recognizing revenue based on individual performance obligations in a contract. The new standard will also require additional qualitative and quantitative disclosures about contracts with customers, significant judgments made in applying the revenue guidance, and assets recognized from the costs to obtain or fulfill a contract. This guidance is effective for us for reporting periods beginning October 1, 2017. We are currently evaluating the impact the adoption of this guidance will have on our consolidated financial statements and related disclosures.
Product warranty obligations	We record a liability for product warranty obligations at the time of sale to a customer based upon historical warranty experience. Most of our products are covered under a warranty period that runs for twelve months from either the date of sale or installation. We also record a liability for specific warranty matters when they become probable and reasonably estimable. Our product warranty obligations are included in other current liabilities in the Condensed Consolidated Balance Sheet.
Fair value of financial instruments	Fair Value of Financial Instruments
	U.S. GAAP defines fair value as the price that would be received for an asset or paid to transfer a liability (exit price) in an orderly transaction between market participants in the principal or most advantageous market for the asset or liability. U.S. GAAP also classifies the inputs used to measure fair value into the following hierarchy:
	Level 1:	Quoted prices in active markets for identical assets or liabilities.
	Level 2:	Quoted prices in active markets for similar assets or liabilities, quoted prices for identical or similar assets or liabilities in markets that are not active, or inputs other than quoted prices that are observable for the asset or liability.
	Level 3:	Unobservable inputs for the asset or liability.
	We recognize all derivative financial instruments as either assets or liabilities at fair value in the Consolidated Balance Sheet. We value our forward exchange contracts using a market approach. We use a valuation model based on observable market inputs including forward and spot prices for currency and interest rate curves. We did not change our valuation techniques during the three months ended March 31, 2015. It is our policy to execute such instruments with major financial institutions that we believe to be creditworthy and not to enter into derivative financial instruments for speculative purposes. We diversify our foreign currency forward exchange contracts among counterparties to minimize exposure to any one of these entities. Our foreign currency forward exchange contracts are usually denominated in currencies of major industrial countries. The U.S. dollar-equivalent gross notional amount of our forward exchange contracts totaled $1,412.0 million at March 31, 2015. Currency pairs (buy/sell) comprising the most significant contract notional values were United States dollar (USD)/euro, USD/Swiss franc, USD/Canadian dollar, Swiss franc/euro, Mexican peso/USD, Singapore dollar/USD, and Swiss franc/Canadian dollar.
	We value interest rate swap contracts using a market approach based on observable market inputs including publicized swap curves.
Fair value measurement of non-derivative instruments	We also hold financial instruments consisting of cash, short-term investments, short-term debt and long-term debt. The fair values of our cash, short-term investments and short-term debt approximate their carrying amounts as reported in our Condensed Consolidated Balance Sheet due to the short-term nature of these instruments.
Income Taxes	At the end of each interim period, we estimate a base effective tax rate that we expect for the full fiscal year based on our most recent forecast of pre-tax income, permanent book and tax differences and global tax planning strategies. We use this base rate to provide for income taxes on a year-to-date basis, excluding the effect of significant unusual or extraordinary items and items that are reported net of their related tax effects. We record the tax effect of significant unusual or extraordinary items and items that are reported net of their tax effects in the period in which they occur.

Basis_of_Presentation_and_Acco2

Basis of Presentation and Accounting Policies (Tables)	6 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	The following table reconciles basic and diluted earnings per share (EPS) amounts (in millions, except per share amounts):
		Three Months Ended						Six Months Ended
		March 31,						March 31,
		2015			2014			2015			2014
	Net income	$	206		$	180.3		$	420.2		$	378.4
	Less: Allocation to participating securities	(0.2		)	(0.2		)	(0.4		)	(0.5		)
	Net income available to common shareowners	$	205.8		$	180.1		$	419.8		$	377.9
	Basic weighted average outstanding shares	134.9			138.5			135.3			138.5
	Effect of dilutive securities
	Stock options	1.1			1.5			1.1			1.5
	Performance shares	—			0.2			0.1			0.2
	Diluted weighted average outstanding shares	136			140.2			136.5			140.2
	Earnings per share:
	Basic	$	1.53		$	1.3		$	3.1		$	2.73
	Diluted	$	1.51		$	1.28		$	3.08		$	2.7

ShareBased_Compensation_Tables

Share-Based Compensation (Tables)	6 Months Ended
	Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Share-based Compensation, Activity	The number of shares granted to employees and non-employee directors and the weighted average fair value per share during the periods presented were (in thousands except per share amounts):
		Six Months Ended March 31,
		2015			2014
		Grants	Wtd. Avg.		Grants	Wtd. Avg.
			Share			Share
			Fair Value			Fair Value
	Stock options	1,032	$	26.7	930	$	33.97
	Performance shares	87	103.7		69	108.48
	Restricted stock and restricted stock units	49	115.25		50	108.99
	Unrestricted stock	7	111.43		8	108.86

Inventories_Tables

Inventories (Tables)	6 Months Ended
	Mar. 31, 2015
Inventory Disclosure [Abstract]
Schedule of Inventory, Current	Inventories consist of (in millions):
		March 31,		September 30,
		2015		2014
	Finished goods	$	252.1	$	240.3
	Work in process	160.5		156.9
	Raw materials, parts and supplies	183		191.2
	Inventories	$	595.6	$	588.4

Goodwill_and_Other_Intangible_1

Goodwill and Other Intangible Assets (Tables)	6 Months Ended
	Mar. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	Changes in the carrying amount of goodwill for the six months ended March 31, 2015 are (in millions):
		Architecture &			Control			Total
		Software			Products &
					Solutions
	Balance as of September 30, 2014	$	395.6		$	655		$	1,050.60
	Acquisition of business	—			14.9			14.9
	Translation and other	(8.5		)	(28.4		)	(36.9		)
	Balance as of March 31, 2015	$	387.1		$	641.5		$	1,028.60
Schedule of Finite Lived and Indefinite Lived Intangible Assets by Major Class	Other intangible assets consist of (in millions):
		March 31, 2015
		Carrying			Accumulated			Net
		Amount			Amortization
	Amortized intangible assets:
	Computer software products	$	181.9		$	86		$	95.9
	Customer relationships	87.6			45.9			41.7
	Technology	83			40.2			42.8
	Trademarks	31.8			14.4			17.4
	Other	14.7			9.3			5.4
	Total amortized intangible assets	399			195.8			203.2
	Intangible assets not subject to amortization	43.7			—			43.7
	Total	$	442.7		$	195.8		$	246.9
		September 30, 2014
		Carrying			Accumulated			Net
		Amount			Amortization
	Amortized intangible assets:
	Computer software products	$	169.1		$	82.5		$	86.6
	Customer relationships	89.8			45.4			44.4
	Technology	84			38.2			45.8
	Trademarks	33.7			14			19.7
	Other	15.5			9.5			6
	Total amortized intangible assets	392.1			189.6			202.5
	Intangible assets not subject to amortization	43.7			—			43.7
	Total	$	435.8		$	189.6		$	246.2

Longterm_and_Shortterm_Debt_Ta

Long-term and Short-term Debt (Tables)	6 Months Ended
	Mar. 31, 2015
Debt Disclosure [Abstract]
Schedule of Debt	Long-term debt consists of (in millions):
		March 31,			September 30,
		2015			2014
	5.65% notes, payable in December 2017	$	250		$	250
	2.050% notes, payable in March 2020	301.1			—
	2.875% notes, payable in March 2025	299.3			—
	6.70% debentures, payable in January 2028	250			250
	6.25% debentures, payable in December 2037	250			250
	5.20% debentures, payable in January 2098	200			200
	Unamortized discount and other	(45.0		)	(44.4		)
	Long-term debt	$	1,505.40		$	905.6

Other_Current_Liabilities_Tabl

Other Current Liabilities (Tables)	6 Months Ended
	Mar. 31, 2015
Other Liabilities Disclosure [Abstract]
Other Current Liabilities	Other current liabilities consist of (in millions):
		March 31,		September 30,
		2015		2014
	Unrealized losses on foreign exchange contracts	$	21.4	$	5.8
	Product warranty obligations	32.5		34.1
	Taxes other than income taxes	32.2		37.2
	Accrued interest	17.4		15.6
	Income taxes payable	33.9		41
	Other	49.4		54.6
	Other current liabilities	$	186.8	$	188.3

Product_Warranty_Obligations_T

Product Warranty Obligations (Tables)	6 Months Ended
	Mar. 31, 2015
Product Warranties Disclosures [Abstract]
Schedule of Product Warranty Liability	Changes in product warranty obligations for the six months ended March 31, 2015 and 2014 are (in millions):
		Six Months Ended
		March 31,
		2015			2014
	Balance at beginning of period	$	34.1		$	36.9
	Accruals for warranties issued during the current period	13.5			15.4
	Adjustments to pre-existing warranties	(0.6		)	(1.3		)
	Settlements of warranty claims	(14.5		)	(14.0		)
	Balance at end of period	$	32.5		$	37

Derivative_Instruments_and_Fai1

Derivative Instruments and Fair Value Measurement (Tables)	6 Months Ended
	Mar. 31, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss)	The pre-tax amount of gains (losses) recorded in other comprehensive income related to cash flow hedges that would have been recorded in the Condensed Consolidated Statement of Operations had they not been so designated was (in millions):
		Three Months Ended								Six Months Ended
		March 31,								March 31,
		2015				2014				2015			2014
	Forward exchange contracts	$	39.8			$	(0.7	)		$	50.7		$	0.9
Schedule of Cash Flow Hedging Instruments, Statements of Financial Performance and Financial Position, Location	The pre-tax amount of (losses) gains reclassified from accumulated other comprehensive loss into the Condensed Consolidated Statement of Operations related to derivative forward exchange contracts designated as cash flow hedges, which offset the related gains and losses on the hedged items during the periods presented, was (in millions):
		Three Months Ended								Six Months Ended
		March 31,								March 31,
		2015				2014				2015			2014
	Sales	$	(2.4	)		$	(0.8	)		$	(3.6	)	$	(1.0	)
	Cost of sales	7.8				1.7				13.6			2.4
	Total	$	5.4			$	0.9			$	10		$	1.4
Schedule of Net Investment Hedges in Accumulated Other Comprehensive Income (Loss)	The pre-tax amount of (losses) gains recorded in other comprehensive income related to net investment hedges that would have been recorded in the Condensed Consolidated Statement of Operations had they not been so designated was (in millions):
		Three Months Ended								Six Months Ended
		March 31,								March 31,
		2015				2014				2015			2014
	Forward exchange contracts	$	(6.4	)		$	—			$	(6.4	)	$	—
	Foreign currency denominated debt	0.6				(0.2		)		1.3			(0.5		)
	Total	$	(5.8	)		$	(0.2	)		$	(5.1	)	$	(0.5	)
Schedule of Fair Value Hedging Instruments, Statements of Financial Performance and Financial Position, Location	The pre-tax amount of net gains recognized within the Condensed Consolidated Statement of Operations related to derivative instruments designated as fair value hedges, which fully offset the related net losses on the hedged debt instruments during the periods presented, was (in millions):
		Three Months Ended								Six Months Ended
		March 31,								March 31,
		2015				2014				2015			2014
	Interest expense	$	0.4			$	—			$	0.4		$	—
Schedule of Other Derivatives Not Designated as Hedging Instruments, Statements of Financial Performance and Financial Position, Location	The pre-tax amount of gains from forward exchange contracts not designated as hedging instruments recognized in the Condensed Consolidated Statement of Operations was (millions):
		Three Months Ended								Six Months Ended
		March 31,								March 31,
		2015				2014				2015			2014
	Other income	$	13.7			$	2.6			$	15.3		$	6.5
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value	Assets and liabilities measured at fair value on a recurring basis and their location in our Condensed Consolidated Balance Sheet were (in millions):
				Fair Value (Level 2)
	Derivatives Designated as Hedging Instruments	Balance Sheet Location		March 31,				September 30,
				2015				2014
	Forward exchange contracts	Other current assets		$	49.2			$	13.1
	Forward exchange contracts	Other assets		11.6				5
	Forward exchange contracts	Other current liabilities		(18.8		)		(4.1		)
	Forward exchange contracts	Other liabilities		(0.8		)		(0.3		)
	Interest rate swap contracts	Other assets		1.1				—
	Interest rate swap contracts	Other liabilities		(0.7		)		—
	Total			$	41.6			$	13.7
				Fair Value (Level 2)
	Derivatives Not Designated as Hedging Instruments	Balance Sheet Location		March 31,				September 30,
				2015				2014
	Forward exchange contracts	Other current assets		$	21.4			$	3.5
	Forward exchange contracts	Other current liabilities		(2.6		)		(1.8		)
	Total			$	18.8			$	1.7
Fair Value, by Balance Sheet Grouping	The following table presents the carrying amounts and estimated fair values of financial instruments not measured at fair value in the Condensed Consolidated Balance Sheet (in millions):
		March 31, 2015
						Fair Value
		Carrying Amount				Total				Level 1			Level 2			Level 3
	Cash and cash equivalents	$	1,402.90			$	1,402.90			$	1,381.50		$	21.4		$	—
	Short-term investments	634.7				634.7				—			634.7			—
	Short-term debt	—				—				—			—			—
	Long-term debt	1,505.40				1,769.10				—			1,769.10			—
		September 30, 2014
						Fair Value
		Carrying Amount				Total				Level 1			Level 2			Level 3
	Cash and cash equivalents	$	1,191.30			$	1,191.30			$	1,154.20		$	37.1		$	—
	Short-term investments	628.5				628.5				—			628.5			—
	Short-term debt	325				325				—			325			—
	Long-term debt	905.6				1,119.40				—			1,119.40			—

Retirement_Benefits_Tables

Retirement Benefits (Tables)	6 Months Ended
	Mar. 31, 2015
Compensation and Retirement Disclosure [Abstract]
Schedule of Net Benefit Costs	The components of net periodic benefit cost are (in millions):
		Pension Benefits
		Three Months Ended						Six Months Ended
		March 31,						March 31,
		2015			2014			2015			2014
	Service cost	$	21.5		$	19.6		$	43.2		$	39.3
	Interest cost	41.6			43.6			83.9			87.2
	Expected return on plan assets	(55.8		)	(54.5		)	(111.9		)	(109.0		)
	Amortization:
	Prior service credit	(0.6		)	(0.7		)	(1.3		)	(1.4		)
	Net actuarial loss	29.6			24.9			59.6			49.8
	Net periodic benefit cost	$	36.3		$	32.9		$	73.5		$	65.9
		Other Postretirement Benefits
		Three Months Ended						Six Months Ended
		March 31,						March 31,
		2015			2014			2015			2014
	Service cost	$	0.4		$	0.5		$	0.8		$	1
	Interest cost	1.1			1.6			2.1			3.2
	Amortization:
	Prior service credit	(3.7		)	(2.7		)	(7.4		)	(5.2		)
	Net actuarial loss	1.1			0.9			2.3			1.6
	Net periodic benefit cost	$	(1.1	)	$	0.3		$	(2.2	)	$	0.6

Accumulated_Other_Comprehensiv1

Accumulated Other Comprehensive Loss (Tables)	6 Months Ended
	Mar. 31, 2015
Accumulated Other Comprehensive Loss [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss)	Changes in accumulated other comprehensive loss by component were (in millions):
	Three Months Ended March 31, 2015
		Pension and other postretirement benefit plan adjustments,			Accumulated currency translation adjustments,			Net unrealized gains (losses) on cash flow hedges, net of tax			Total accumulated other comprehensive loss, net of tax
		net of tax			net of tax
	Balance as of December 31, 2014	$	(891.8	)	$	(145.4	)	$	21.3		$	(1,015.9	)
	Other comprehensive (loss) income before reclassifications	—			(67.7		)	31.4			(36.3		)
	Amounts reclassified from accumulated other comprehensive loss	17.2			—			(5.7		)	11.5
	Other comprehensive income (loss)	17.2			(67.7		)	25.7			(24.8		)
	Balance as of March 31, 2015	$	(874.6	)	$	(213.1	)	$	47		$	(1,040.7	)
	Six Months Ended March 31, 2015
		Pension and other postretirement benefit plan adjustments,			Accumulated currency translation adjustments,			Net unrealized gains (losses) on cash flow hedges, net of tax			Total accumulated other comprehensive loss, net of tax
		net of tax			net of tax
	Balance as of September 30, 2014	$	(909.4	)	$	(52.5	)	$	13.9		$	(948.0	)
	Other comprehensive (loss) income before reclassifications	—			(160.6		)	43.6			(117.0		)
	Amounts reclassified from accumulated other comprehensive loss	34.8			—			(10.5		)	24.3
	Other comprehensive income (loss)	34.8			(160.6		)	33.1			(92.7		)
	Balance as of March 31, 2015	$	(874.6	)	$	(213.1	)	$	47		$	(1,040.7	)
	Three Months Ended March 31, 2014
		Pension and other postretirement benefit plan adjustments,			Accumulated currency translation adjustments,			Net unrealized gains (losses) on cash flow hedges, net of tax			Total accumulated other comprehensive loss, net of tax
		net of tax			net of tax
	Balance as of December 31, 2013	$	(809.2	)	$	18		$	(2.0	)	$	(793.2	)
	Other comprehensive income (loss) before reclassifications	—			5.1			(2.0		)	3.1
	Amounts reclassified from accumulated other comprehensive loss	14.5			—			—			14.5
	Other comprehensive income (loss)	14.5			5.1			(2.0		)	17.6
	Balance as of March 31, 2014	$	(794.7	)	$	23.1		$	(4.0	)	$	(775.6	)
	Six Months Ended March 31, 2014
		Pension and other postretirement benefit plan adjustments,			Accumulated currency translation adjustments,			Net unrealized gains (losses) on cash flow hedges, net of tax			Total accumulated other comprehensive loss, net of tax
		net of tax			net of tax
	Balance as of September 30, 2013	$	(823.8	)	$	8.8		$	(2.7	)	$	(817.7	)
	Other comprehensive income (loss) before reclassifications	—			14.3			(1.0		)	13.3
	Amounts reclassified from accumulated other comprehensive loss	29.1			—			(0.3		)	28.8
	Other comprehensive income (loss)	29.1			14.3			(1.3		)	42.1
	Balance as of March 31, 2014	$	(794.7	)	$	23.1		$	(4.0	)	$	(775.6	)
Reclassification out of Accumulated Other Comprehensive Income	The reclassifications out of accumulated other comprehensive loss to the Consolidated Statement of Operations were (in millions):
		Three Months Ended						Six Months Ended						Affected Line in the Consolidated Statement of Operations
		March 31,						March 31,
		2015			2014			2015			2014
	Pension and other postretirement benefit plan adjustments:
	Amortization of prior service credit	$	(4.3	)	$	(3.4	)	$	(8.7	)	$	(6.6	)	(a)
	Amortization of net actuarial loss	30.7			25.8			61.9			51.4			(a)
		26.4			22.4			53.2			44.8			Total before tax
		(9.2		)	(7.9		)	(18.4		)	(15.7		)	Provision for tax
		$	17.2		$	14.5		$	34.8		$	29.1		After tax
	Net unrealized losses (gains) on cash flow hedges:
	Forward exchange contracts	$	2.4		$	0.8		$	3.6		$	1		Sales
	Forward exchange contracts	(7.8		)	(1.7		)	(13.6		)	(2.4		)	Cost of Sales
		(5.4		)	(0.9		)	(10.0		)	(1.4		)	Total before tax
		(0.3		)	0.9			(0.5		)	1.1			Provision for tax
		$	(5.7	)	$	—		$	(10.5	)	$	(0.3	)	After tax
	Total reclassifications	$	11.5		$	14.5		$	24.3		$	28.8		After tax
	(a) Reclassified from accumulated other comprehensive loss into cost of sales and selling, general and administrative expenses. These components are included in the computation of net periodic benefit costs. See Note 9 for further information.

Business_Segment_Information_T

Business Segment Information (Tables)	6 Months Ended
	Mar. 31, 2015
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment	The following tables reflect the sales and operating results of our reportable segments (in millions):
		Three Months Ended						Six Months Ended
		March 31,						March 31,
		2015			2014			2015			2014
	Sales
	Architecture & Software	$	674.3		$	686.8		$	1,382.10		$	1,382.70
	Control Products & Solutions	876.5			913.7			1,743.10			1,809.50
	Total	$	1,550.80		$	1,600.50		$	3,125.20		$	3,192.20
	Segment operating earnings
	Architecture & Software	$	200.8		$	190.2		$	422.2		$	402.1
	Control Products & Solutions	133.4			111.9			258.8			228
	Total	334.2			302.1			681			630.1
	Purchase accounting depreciation and amortization	(5.2		)	(5.8		)	(10.6		)	(10.4		)
	General corporate – net	(21.4		)	(18.9		)	(44.2		)	(40.6		)
	Non-operating pension costs	(15.4		)	(14.0		)	(31.6		)	(28.0		)
	Interest expense	(15.7		)	(15.0		)	(30.6		)	(29.9		)
	Income before income taxes	$	276.5		$	248.4		$	564		$	521.2

Basis_of_Presentation_and_Acco3

Basis of Presentation and Accounting Policies (Details) (USD $)	3 Months Ended		6 Months Ended
In Millions, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014
Reconciled Basic and Diluted EPS
Net income	$206	$180.30	$420.20	$378.40
Less: Allocation to participating securities	-0.2	-0.2	-0.4	-0.5
Net income available to common shareowners	$205.80	$180.10	$419.80	$377.90
Basic weighted average outstanding shares	134.9	138.5	135.3	138.5
Effect of dilutive securities
Stock options	1.1	1.5	1.1	1.5
Performance shares	0	0.2	0.1	0.2
Diluted weighted average outstanding shares	136	140.2	136.5	140.2
Earnings Per Share, Basic [Abstract]
Basic	$1.53	$1.30	$3.10	$2.73
Earnings Per Share, Diluted [Abstract]
Diluted	$1.51	$1.28	$3.08	$2.70

Basis_of_Presentation_and_Acco4

Basis of Presentation and Accounting Policies (Details Textual) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014	Sep. 30, 2014
Accounting Policies [Abstract]
Allowance for doubtful accounts	$23.20		$23.20		$19.40
Allowance for certain customer returns, rebates and incentives	$12.20		$12.20		$11.60
Antidilutive share-based compensation awards	1.6	0.9	1.7	0.9

ShareBased_Compensation_Detail

Share-Based Compensation (Details) (USD $)	3 Months Ended		6 Months Ended
In Millions, except Share data in Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014
Share-Based Compensation (Textual) [Abstract]
Pre-tax share-based compensation expense	$10.40	$10.40	$21.20	$21.90
Stock options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants			1,032	930
Wtd. Avg. Share Fair Value			$26.70	$33.97
Performance shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants			87	69
Wtd. Avg. Share Fair Value			$103.70	$108.48
Restricted stock and restricted stock units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants			49	50
Wtd. Avg. Share Fair Value			$115.25	$108.99
Unrestricted stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants			7	8
Wtd. Avg. Share Fair Value			$111.43	$108.86

Inventories_Details

Inventories (Details) (USD $)	Mar. 31, 2015	Sep. 30, 2014
In Millions, unless otherwise specified
Inventories
Finished goods	$252.10	$240.30
Work in process	160.5	156.9
Raw materials, parts and supplies	183	191.2
Inventories	$595.60	$588.40

Goodwill_and_Other_Intangible_2

Goodwill and Other Intangible Assets (Details) (USD $)	6 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015
Goodwill
Balance as of September 30, 2014	$1,050.60
Acquisition of business	14.9
Translation and other	-36.9
Balance as of March 31, 2015	1,028.60
Finite-lived Intangible Assets Acquired	5.4
Architecture & Software [Member]
Goodwill
Balance as of September 30, 2014	395.6
Acquisition of business	0
Translation and other	-8.5
Balance as of March 31, 2015	387.1
Control Products & Solutions [Member]
Goodwill
Balance as of September 30, 2014	655
Acquisition of business	14.9
Translation and other	-28.4
Balance as of March 31, 2015	$641.50

Goodwill_and_Other_Intangible_3

Goodwill and Other Intangible Assets (Details 1) (USD $)	Mar. 31, 2015	Sep. 30, 2014
In Millions, unless otherwise specified
Other intangible assets
Amortized intangible assets, carrying amount	$399	$392.10
Amortized intangible assets, accumulated amortization	195.8	189.6
Amortized intangible assets, net	203.2	202.5
Intangible assets not subject to amortization	43.7	43.7
Total other intangible assets, carrying amount	442.7	435.8
Total other intangible assets, net	246.9	246.2
Goodwill and Other Intangible Assets (Textual) [Abstract]
Estimated amortization expense in 2015	28.9
Estimated amortization expense in 2016	30.5
Estimated amortization expense in 2017	26.4
Estimated amortization expense in 2018	20.3
Estimated amortization expense in 2019	16.9
Computer software products [Member]
Other intangible assets
Amortized intangible assets, carrying amount	181.9	169.1
Amortized intangible assets, accumulated amortization	86	82.5
Amortized intangible assets, net	95.9	86.6
Customer relationships [Member]
Other intangible assets
Amortized intangible assets, carrying amount	87.6	89.8
Amortized intangible assets, accumulated amortization	45.9	45.4
Amortized intangible assets, net	41.7	44.4
Technology [Member]
Other intangible assets
Amortized intangible assets, carrying amount	83	84
Amortized intangible assets, accumulated amortization	40.2	38.2
Amortized intangible assets, net	42.8	45.8
Trademarks [Member]
Other intangible assets
Amortized intangible assets, carrying amount	31.8	33.7
Amortized intangible assets, accumulated amortization	14.4	14
Amortized intangible assets, net	17.4	19.7
Other [Member]
Other intangible assets
Amortized intangible assets, carrying amount	14.7	15.5
Amortized intangible assets, accumulated amortization	9.3	9.5
Amortized intangible assets, net	$5.40	$6

Longterm_and_Shortterm_Debt_De

Long-term and Short-term Debt (Details) (USD $)	6 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Sep. 30, 2014
Long-term debt
Unamortized discount and other	($45)	($44.40)
Long-term debt	1,505.40	905.6
5.65% notes, payable in December 2017
Long-term debt
Debt instruments	250	250
Stated interest rate	5.65%
Maturity date	1-Dec-17
2.050% notes, payable in March 2020
Long-term debt
Debt instruments	301.1	0
Stated interest rate	2.05%
Maturity date	1-Mar-20
2.875% notes, payable in March 2025
Long-term debt
Debt instruments	299.3	0
Stated interest rate	2.88%
Maturity date	1-Mar-25
6.70% debentures, payable in January 2028
Long-term debt
Debt instruments	250	250
Stated interest rate	6.70%
Maturity date	15-Jan-28
6.25% debentures, payable in December 2037
Long-term debt
Debt instruments	250	250
Stated interest rate	6.25%
Maturity date	1-Dec-37
5.20% debentures, payable in January 2098
Long-term debt
Debt instruments	$200	$200
Stated interest rate	5.20%
Maturity date	15-Jan-98

Longterm_and_Shortterm_Debt_De1

Long-term and Short-term Debt (Details Textuals 1) (USD $)	6 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Sep. 30, 2014
Issuance of long-term debt
Net proceeds from debt offering	$594.30	$0
Fair value of interest rate swap contracts	0.4
Short-term debt
Commercial paper borrowings outstanding	0		325
Weighted average interest rate of commercial paper outstanding			0.17%
2.050% notes, payable in March 2020
Issuance of long-term debt
Long-term debt issued	300
Stated interest rate	2.05%
Maturity date	1-Mar-20
Effective floating interest rate	0.72%
2.875% notes, payable in March 2025
Issuance of long-term debt
Long-term debt issued	300
Stated interest rate	2.88%
Maturity date	1-Mar-25
Effective floating interest rate	1.13%
Aggregate principal amount of notes issued
Issuance of long-term debt
Long-term debt issued	$600

Longterm_and_Shortterm_Debt_De2

Long-term and Short-term Debt (Details Textuals 2) (USD $)	6 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Sep. 30, 2014
Former Credit Facility [Member]
Line of Credit Facility [Line Items]
Borrowing capacity		$750
New Credit Facility [Member]
Line of Credit Facility [Line Items]
Borrowing capacity	1,000
Expiration date	24-Mar-20
Option to increase borrowing capacity of credit facility	$350

Other_Current_Liabilities_Deta

Other Current Liabilities (Details) (USD $)	Mar. 31, 2015	Sep. 30, 2014	Mar. 31, 2014	Sep. 30, 2013
In Millions, unless otherwise specified
Other current liabilities
Unrealized losses on foreign exchange contracts	$21.40	$5.80
Product warranty obligations	32.5	34.1	37	36.9
Taxes other than income taxes	32.2	37.2
Accrued interest	17.4	15.6
Income taxes payable	33.9	41
Other	49.4	54.6
Other current liabilities	$186.80	$188.30

Product_Warranty_Obligations_D

Product Warranty Obligations (Details) (USD $)	6 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Changes in product warranty obligations
Balance at beginning of period	$34.10	$36.90
Accruals for warranties issued during the current period	13.5	15.4
Adjustments to pre-existing warranties	-0.6	-1.3
Settlements of warranty claims	-14.5	-14
Balance at end of period	$32.50	$37

Derivative_Instruments_and_Fai2

Derivative Instruments and Fair Value Measurement (Details) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net [Abstract]
Pre-tax gains (losses) recorded in other comprehensive income related to cash flow hedges	$39.80	($0.70)	$50.70	$0.90
Pre-tax gains (losses) recorded in other comprehensive income related to net investment hedges	-5.8	-0.2	-5.1	-0.5
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net [Abstract]
Pre-tax amount of gains (losses) reclassified from accumulated other comprehensive income into the Condensed Consolidated Statement of Operations related to derivative forward exchange contracts designated as cash flow hedges	5.4	0.9	10	1.4
Reclassification of Cash Flow Hedge Gain (Loss) [Abstract]
Net unrealized gains on cash flow hedges to be reclassified into earnings during the next 12 months	44		44
Net unrealized gains on cash flow hedges to be reclassified into earnings during the next 12 months, net of tax	38.9		38.9
General Discussion of Derivative Instruments and Hedging Activities [Abstract]
Maximum length of time hedged in cash flow hedges			2 years
No impact on earnings due to ineffective cash flow hedges			no impact
No impact on earnings due to ineffective net investment hedges			no impact
No impact on earnings due to ineffective fair value hedges			no impact
Sales [Member]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net [Abstract]
Pre-tax amount of gains (losses) reclassified from accumulated other comprehensive income into the Condensed Consolidated Statement of Operations related to derivative forward exchange contracts designated as cash flow hedges	-2.4	-0.8	-3.6	-1
Cost of sales [Member]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net [Abstract]
Pre-tax amount of gains (losses) reclassified from accumulated other comprehensive income into the Condensed Consolidated Statement of Operations related to derivative forward exchange contracts designated as cash flow hedges	7.8	1.7	13.6	2.4
Other income [Member]
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Pre-tax amount of gains (losses) from forward exchange contracts not designated as hedging instruments recognized in the Consolidated Statement of Operations	13.7	2.6	15.3	6.5
Interest expense [Member]
Gain (Loss) on Fair Value Hedges Recognized in Earnings [Abstract]
Pre-tax amount of net gains recognized within the Condensed Consolidated Statement of Operations related to derivative instruments designated as fair value hedges	0.4	0	0.4	0
Foreign Exchange Forward [Member]
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net [Abstract]
Pre-tax gains (losses) recorded in other comprehensive income related to net investment hedges	-6.4	0	-6.4	0
Foreign Currency Denominated Debt [Member]
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net [Abstract]
Pre-tax gains (losses) recorded in other comprehensive income related to net investment hedges	$0.60	($0.20)	$1.30	($0.50)

Derivative_Instruments_and_Fai3

Derivative Instruments and Fair Value Measurement (Details 1) (USD $)	Mar. 31, 2015	Sep. 30, 2014
In Millions, unless otherwise specified
Fair Value, Inputs, Level 2 [Member]
Assets and liabilities measured at fair value on a recurring basis
Net derivative asset / (liability) designated as hedging instruments	$41.60	$13.70
Net derivative asset / (liability) not designated as hedging instruments	18.8	1.7
Fair Value, Inputs, Level 2 [Member] | Other current assets [Member]
Assets and liabilities measured at fair value on a recurring basis
Foreign exchange contracts designated as hedging instruments	49.2	13.1
Foreign exchange contracts not designated as hedging instruments	21.4	3.5
Fair Value, Inputs, Level 2 [Member] | Other assets [Member]
Assets and liabilities measured at fair value on a recurring basis
Foreign exchange contracts designated as hedging instruments	11.6	5
Interest rate swap contracts designated as hedging instruments	1.1	0
Fair Value, Inputs, Level 2 [Member] | Other current liabilities [Member]
Assets and liabilities measured at fair value on a recurring basis
Foreign exchange contracts designated as hedging instruments	-18.8	-4.1
Foreign exchange contracts not designated as hedging instruments	-2.6	-1.8
Fair Value, Inputs, Level 2 [Member] | Other liabilities [Member]
Assets and liabilities measured at fair value on a recurring basis
Foreign exchange contracts designated as hedging instruments	-0.8	-0.3
Interest rate swap contracts designated as hedging instruments	-0.7	0
Foreign Exchange Forward [Member]
Derivatives, Fair Value [Line Items]
Notional amount	1,412
Foreign Exchange Forward [Member] | Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Notional amount	223.6
Foreign Exchange Forward [Member] | Cash Flow Hedging [Member]
Derivatives, Fair Value [Line Items]
Notional amount	736.3
Foreign Exchange Forward [Member] | Net Investment Hedging [Member]
Derivatives, Fair Value [Line Items]
Notional amount	452.1
Interest Rate Swap [Member] | Fair Value Hedging [Member]
Derivatives, Fair Value [Line Items]
Notional amount	600
Foreign Currency Denominated Debt [Member] | Net Investment Hedging [Member]
Derivatives, Fair Value [Line Items]
Long-term debt	13.4
Aggregate principal amount of notes issued
Derivatives, Fair Value [Line Items]
Long-term debt	$600

Derivative_Instruments_and_Fai4

Derivative Instruments and Fair Value Measurement (Details 2) (USD $)	Mar. 31, 2015	Sep. 30, 2014	Mar. 31, 2014	Sep. 30, 2013
In Millions, unless otherwise specified
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents, carrying amount	$1,402.90	$1,191.30	$1,239.80	$1,200.90
Cash and cash equivalents, fair value	1,402.90	1,191.30
Short-term investments, carrying amount	634.7	628.5
Short-term investments, fair value	634.7	628.5
Short-term debt	0	325
Short-term debt, fair value	0	325
Long-term debt, carrying amount	1,505.40	905.6
Long-term debt, fair value	1,769.10	1,119.40
Fair Value, Inputs, Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents, fair value	1,381.50	1,154.20
Short-term investments, fair value	0	0
Short-term debt, fair value	0	0
Long-term debt, fair value	0	0
Fair Value, Inputs, Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents, fair value	21.4	37.1
Short-term investments, fair value	634.7	628.5
Short-term debt, fair value	0	325
Long-term debt, fair value	1,769.10	1,119.40
Fair Value, Inputs, Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents, fair value	0	0
Short-term investments, fair value	0	0
Short-term debt, fair value	0	0
Long-term debt, fair value	$0	$0

Retirement_Benefits_Details

Retirement Benefits (Details) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014
Pension Benefits [Member]
Components of net periodic benefit cost
Service cost	$21.50	$19.60	$43.20	$39.30
Interest cost	41.6	43.6	83.9	87.2
Expected return on plan assets	-55.8	-54.5	-111.9	-109
Amortization:
Prior service credit	-0.6	-0.7	-1.3	-1.4
Net actuarial loss	29.6	24.9	59.6	49.8
Net periodic benefit cost	36.3	32.9	73.5	65.9
Other Postretirement Benefits [Member]
Components of net periodic benefit cost
Service cost	0.4	0.5	0.8	1
Interest cost	1.1	1.6	2.1	3.2
Amortization:
Prior service credit	-3.7	-2.7	-7.4	-5.2
Net actuarial loss	1.1	0.9	2.3	1.6
Net periodic benefit cost	($1.10)	$0.30	($2.20)	$0.60

Accumulated_Other_Comprehensiv2

Accumulated Other Comprehensive Loss (Details) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), net of tax	($1,040.70)	($775.60)	($1,040.70)	($775.60)	($1,015.90)	($948)	($793.20)	($817.70)
Other comprehensive income (loss) before reclassifications, net of tax	-36.3	3.1	-117	13.3
Amounts reclassified from accumulated other comprehensive loss, net of tax	11.5	14.5	24.3	28.8
Other comprehensive income (loss), net of tax	-24.8	17.6	-92.7	42.1
Pension and other postretirement benefit plan adjustments [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), net of tax	-874.6	-794.7	-874.6	-794.7	-891.8	-909.4	-809.2	-823.8
Other comprehensive income (loss) before reclassifications, net of tax	0	0	0	0
Amounts reclassified from accumulated other comprehensive loss, net of tax	17.2	14.5	34.8	29.1
Other comprehensive income (loss), net of tax	17.2	14.5	34.8	29.1
Accumulated currency translation adjustments [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), net of tax	-213.1	23.1	-213.1	23.1	-145.4	-52.5	18	8.8
Other comprehensive income (loss) before reclassifications, net of tax	-67.7	5.1	-160.6	14.3
Amounts reclassified from accumulated other comprehensive loss, net of tax	0	0	0	0
Other comprehensive income (loss), net of tax	-67.7	5.1	-160.6	14.3
Net unrealized gains (losses) on cash flow hedges [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), net of tax	47	-4	47	-4	21.3	13.9	-2	-2.7
Other comprehensive income (loss) before reclassifications, net of tax	31.4	-2	43.6	-1
Amounts reclassified from accumulated other comprehensive loss, net of tax	-5.7	0	-10.5	-0.3
Other comprehensive income (loss), net of tax	$25.70	($2)	$33.10	($1.30)

Accumulated_Other_Comprehensiv3

Accumulated Other Comprehensive Loss (Details 1) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total before tax	$276.50	$248.40	$564	$521.20
Provision for tax	-70.5	-68.1	-143.8	-142.8
After tax	206	180.3	420.2	378.4
Reclassification out of Accumulated Other Comprehensive Loss [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
After tax	11.5	14.5	24.3	28.8
Pension and other postretirement benefit plan adjustments [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amortization of prior service credit	-4.3	-3.4	-8.7	-6.6
Amortization of net actuarial loss	30.7	25.8	61.9	51.4
Pension and other postretirement benefit plan adjustments [Member] | Reclassification out of Accumulated Other Comprehensive Loss [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total before tax	26.4	22.4	53.2	44.8
Provision for tax	-9.2	-7.9	-18.4	-15.7
After tax	17.2	14.5	34.8	29.1
Net unrealized gains (losses) on cash flow hedges [Member] | Reclassification out of Accumulated Other Comprehensive Loss [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total before tax	-5.4	-0.9	-10	-1.4
Provision for tax	-0.3	0.9	-0.5	1.1
After tax	-5.7	0	-10.5	-0.3
Foreign Exchange Forward [Member] | Sales [Member] | Net unrealized gains (losses) on cash flow hedges [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amounts reclassified from accumulated other comprehensive loss, net of tax	2.4	0.8	3.6	1
Foreign Exchange Forward [Member] | Cost of sales [Member] | Net unrealized gains (losses) on cash flow hedges [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amounts reclassified from accumulated other comprehensive loss, net of tax	($7.80)	($1.70)	($13.60)	($2.40)

Income_Taxes_Details

Income Taxes (Details) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014	Sep. 30, 2014
Income Tax Disclosure [Abstract]
Effective income tax rate	25.50%	27.40%	25.50%	27.40%
U.S. statutory rate	35.00%	35.00%	35.00%	35.00%
Gross unrecognized tax benefits	$40.50		$40.50		$38.90
Accrued interest and penalties related to unrecognized tax benefits	5.6		5.6		8.1
Net reduction of income tax provision related to unrecognized tax benefits, tax penalties, accrued interest and offsetting tax assets	22.3		22.3
Reasonably possible amount of decrease in gross unrecognized tax benefits for the next twelve months	20.5		20.5
Reasonably possible amount of net reduction to income tax provision if unrecognized tax benefits were recognized	$3.10		$3.10
Earliest open year for income tax examinations, U.S. federal			2012
Earliest open tax year for income tax examinations, state, local and non-U.S.			2003

Business_Segment_Information_D

Business Segment Information (Details) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014
Sales and operating results of reportable segments
Sales	$1,550.80	$1,600.50	$3,125.20	$3,192.20
Income before income taxes	276.5	248.4	564	521.2
Interest expense	-15.7	-15	-30.6	-29.9
Operating Segments [Member]
Sales and operating results of reportable segments
Income before income taxes	334.2	302.1	681	630.1
Architecture & Software [Member]
Sales and operating results of reportable segments
Sales	674.3	686.8	1,382.10	1,382.70
Income before income taxes	200.8	190.2	422.2	402.1
Control Products & Solutions [Member]
Sales and operating results of reportable segments
Sales	876.5	913.7	1,743.10	1,809.50
Income before income taxes	133.4	111.9	258.8	228
Segment Reconciling Items [Member]
Sales and operating results of reportable segments
Purchase accounting depreciation and amortization	-5.2	-5.8	-10.6	-10.4
Non-operating pension costs	-15.4	-14	-31.6	-28
Corporate, Non-Segment [Member]
Sales and operating results of reportable segments
General corporate - net	-21.4	-18.9	-44.2	-40.6
Interest expense	($15.70)	($15)	($30.60)	($29.90)