Rockwell Automation (ROK) 10-K 9 Nov 21 2021 FY Annual report Financial data

Cover Page

Cover Page - USD ($) $ in Billions	12 Months Ended
	Sep. 30, 2021	Oct. 31, 2021	Mar. 31, 2021
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Sep. 30, 2021
Document Transition Report	false
Entity File Number	1-12383
Entity Registrant Name	Rockwell Automation, Inc
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	25-1797617
Entity Address, Address Line One	1201 South Second Street
Entity Address, City or Town	Milwaukee
Entity Address, State or Province	WI
Entity Address, Postal Zip Code	53204
City Area Code	414
Local Phone Number	382-2000
Title of 12(b) Security	Common Stock ($1.00 par value)
Trading Symbol	ROK
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 30.8
Entity Common Stock, Shares Outstanding		115,981,885
Documents Incorporated by Reference	Certain information contained in the Proxy Statement for the Annual Meeting of Shareowners of registrant to be held on February 1, 2022, is incorporated by reference into Part III hereof.
Entity Central Index Key	0001024478
Current Fiscal Year End Date	--09-30
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Amendment Flag	false

Consolidated Balance Sheet

Consolidated Balance Sheet - USD ($) $ in Millions	Sep. 30, 2021	Sep. 30, 2020
Current assets:
Cash and cash equivalents	$ 662.2	$ 704.6
Receivables	1,424.5	1,249.1
Inventories	798.1	584
Other current assets	178.6	148.1
Total current assets	3,063.4	2,685.8
Property, net of accumulated depreciation	581.9	574.4
Operating lease right-of-use assets	377.7	342.9
Goodwill	3,625.9	1,650.3
Other intangible assets, net	1,021.8	479.3
Deferred income taxes	380.9	415.6
Long-term investments	1,363.5	953.5
Other assets	286.5	162.9
Total	10,701.6	7,264.7
Current liabilities:
Short-term debt	509.7	24.6
Accounts payable	889.8	687.8
Compensation and benefits	408	197
Contract liabilities	462.5	325.3
Customer returns, rebates and incentives	237.8	199.6
Other current liabilities	484.4	376.5
Total current liabilities	2,992.2	1,810.8
Long-term debt	3,464.6	1,974.7
Retirement benefits	720.6	1,284
Operating lease liabilities	313.6	274.7
Other liabilities	516.5	573.7
Commitments and contingent liabilities (Note 17)
Shareowners’ equity:
Common stock ($1.00 par value, shares issued: 181.4)	181.4	181.4
Additional paid-in capital	1,933.6	1,830.7
Retained earnings	8,000.4	7,139.8
Accumulated other comprehensive loss	(1,017.1)	(1,614.2)
Common stock in treasury, at cost (shares held: 2021, 65.4; 2020, 65.2)	(6,708.7)	(6,509.9)
Shareowners’ equity attributable to Rockwell Automation, Inc.	2,389.6	1,027.8
Noncontrolling interests	304.5	319
Total shareowners’ equity	2,694.1	1,346.8
Total	$ 10,701.6	$ 7,264.7

Consolidated Balance Sheet (Par

Consolidated Balance Sheet (Parenthetical) - $ / shares shares in Millions	Sep. 30, 2021	Sep. 30, 2020
Shareowners' equity:
Common stock, par value per share (in dollars per share)	$ 1	$ 1
Common stock, shares issued (in shares)	181.4	181.4
Treasury stock, shares held (in shares)	65.4	65.2

Consolidated Statement of Opera

Consolidated Statement of Operations - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Sales
Total sales	$ 6,997.4	$ 6,329.8	$ 6,694.8
Cost of sales
Cost of sales	(4,099.7)	(3,734.6)	(3,794.7)
Gross profit	2,897.7	2,595.2	2,900.1
Selling, general and administrative expenses	(1,680)	(1,479.8)	(1,538.5)
Change in fair value of investments	397.4	153.9	(368.5)
Other income (expense) (Note 15)	5.7	(29.7)	6.1
Interest expense	(94.6)	(103.5)	(98.2)
Income before income taxes	1,526.2	1,136.1	901
Income tax provision (Note 16)	(181.9)	(112.9)	(205.2)
Net income	1,344.3	1,023.2	695.8
Net (loss) attributable to noncontrolling interests	(13.8)	(0.2)	0
Net income attributable to Rockwell Automation, Inc.	$ 1,358.1	$ 1,023.4	$ 695.8
Earnings per share:
Basic (in dollars per share)	$ 11.69	$ 8.83	$ 5.88
Diluted (in dollars per share)	$ 11.58	$ 8.77	$ 5.83
Weighted average outstanding shares:
Basic (in shares)	116	115.8	118.3
Diluted (in shares)	117.1	116.6	119.3
Products and solutions
Sales
Total sales	$ 6,285.2	$ 5,663.6	$ 5,938.5
Cost of sales
Cost of sales	(3,638.7)	(3,305.9)	(3,313.6)
Services
Sales
Total sales	712.2	666.2	756.3
Cost of sales
Cost of sales	$ (461)	$ (428.7)	$ (481.1)

Consolidated Statement of Compr

Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 1,344.3	$ 1,023.2	$ 695.8
Other comprehensive income (loss):
Pension and other postretirement benefit plan adjustments (net of tax (expense) benefit of ($181.0), ($3.4), and $150.0)	576.4	9.3	(475.6)
Currency translation adjustments	31.4	25.7	(55.3)
Net change in cash flow hedges (net of tax benefit of $3.1, $6.6, and $5.5)	(11.4)	(18.5)	(17.4)
Net change in available-for-sale investments	0	0	2.2
Other comprehensive income (loss)	596.4	16.5	(546.1)
Comprehensive income	1,940.7	1,039.7	149.7
Comprehensive loss attributable to noncontrolling interests	(14.5)	(0.5)	0
Comprehensive income attributable to Rockwell Automation, Inc.	$ 1,955.2	$ 1,040.2	$ 149.7

Consolidated Statement of Com_2

Consolidated Statement of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Other comprehensive income (loss):
Pension and other postretirement benefit plan adjustments, tax (expense) benefit	$ (181)	$ (3.4)	$ 150
Net change in cash flow hedges, tax benefit (expense)	$ 3.1	$ 6.6	$ 5.5

Consolidated Statement of Cash

Consolidated Statement of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Operating activities:
Net income	$ 1,344.3	$ 1,023.2	$ 695.8
Adjustments to arrive at cash provided by operating activities:
Depreciation	123.9	122.5	126.2
Amortization of intangible assets	65.9	50.2	26
Change in fair value of investments	(397.4)	(153.9)	368.5
Share-based compensation expense	51.7	46.1	43.1
Retirement benefit expense	155.1	129.5	70.7
Pension contributions	(35.8)	(84.1)	(30.9)
Deferred income taxes	(184.1)	(65.7)	(29)
Net loss (gain) on disposition of property	0.5	(12.4)	1.8
Settlement of interest rate derivatives	(28)	22	(35.7)
Changes in assets and liabilities, excluding effects of acquisitions and foreign currency adjustments:
Receivables	(138.1)	(9)	(10.4)
Inventories	(202.8)	30.4	(4.9)
Accounts payable	184.8	(5)	14.5
Contract liabilities	104.4	43.3	12.1
Compensation and benefits	174.6	(44.6)	(45.2)
Income taxes	57.2	(11.8)	(18.8)
Other assets and liabilities	(15.2)	39.8	(1.8)
Cash provided by operating activities	1,261	1,120.5	1,182
Investing activities:
Capital expenditures	(120.3)	(113.9)	(132.8)
Acquisition of businesses, net of cash acquired	(2,488.5)	(550.9)	(20.7)
Purchases of investments	(13.6)	(10.7)	(5.1)
Proceeds from maturities of investments	0.6	6	312.8
Proceeds from sale of investments	0	37.9	66.3
Proceeds from sale of property	0.4	14.9	4.5
Other investing activities	(5.2)	(1.3)	0
Cash (used for) provided by investing activities	(2,626.6)	(618)	225
Financing activities:
Net issuance (repayment) of short-term debt	275.9	0	(551)
Issuance of short-term debt, net of issuance costs	211.4	423.6	0
Issuance of long-term debt, net of discount and issuance costs	1,485.6	0	987.6
Repayment of short-term debt	(2.5)	(400)	0
Repayment of long-term debt	0	(300.7)	0
Cash dividends	(497.1)	(472.8)	(459.8)
Purchases of treasury stock	(299.7)	(264.2)	(1,009)
Proceeds from the exercise of stock options	154.6	214.4	47.4
Other financing activities	(30.4)	0.8	(1.1)
Cash provided by (used for) financing activities	1,297.8	(798.9)	(985.9)
Effect of exchange rate changes on cash	16.8	8.4	(21.5)
(Decrease) increase in cash, cash equivalents, and restricted cash	(51)	(288)	399.6
Cash, cash equivalents, and restricted cash at beginning of year	730.4	1,018.4	618.8
Cash, cash equivalents, and restricted cash at end of year	679.4	730.4	1,018.4
Components of cash, cash equivalents, and restricted cash
Cash and cash equivalents	662.2	704.6	1,018.4
Restricted cash, noncurrent (Other assets)	17.2	25.8	0
Total cash, cash equivalents, and restricted cash	$ 679.4	$ 730.4	$ 1,018.4

Consolidated Statement of Share

Consolidated Statement of Shareowners' Equity - USD ($) $ in Millions		Total	Adoption of accounting standard	Total attributable to Rockwell Automation, Inc.	Total attributable to Rockwell Automation, Inc.Adoption of accounting standard	Common stock	Additional paid-in capital	Retained earnings	Retained earningsAdoption of accounting standard	Accumulated other comprehensive loss	Accumulated other comprehensive lossAdoption of accounting standard	Common stock in treasury, at cost	Noncontrolling interests
Beginning of period at Sep. 30, 2018		$ 1,617.5	$ 6.1	$ 1,617.5	$ 6.1	$ 181.4	$ 1,681.4	$ 6,198.1	$ 6.1	$ (941.9)		$ (5,501.5)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		695.8		695.8				695.8
Other comprehensive income (loss)		(546.1)		(546.1)						(546.1)
Common stock issued (including share-based compensation impact)		90.7		90.7			27.7					63
Share Repurchases		(1,000)		(1,000)								(1,000)
Cash dividends declared	[1]	(459.8)		(459.8)				(459.8)
End of period at Sep. 30, 2019		404.2	$ 2.2	404.2	$ 2.2	181.4	1,709.1	6,440.2	$ 149	(1,488)	$ (146.8)	(6,438.5)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		1,023.2		1,023.4				1,023.4					$ (0.2)
Other comprehensive income (loss)		16.5		16.8						16.8			(0.3)
Common stock issued (including share-based compensation impact)		260.5		260.5			77					183.5
Share Repurchases		(254.9)		(254.9)								(254.9)
Cash dividends declared	[1]	(472.8)		(472.8)				(472.8)
Change in noncontrolling interest		367.9		48.4			44.6			3.8			319.5
End of period at Sep. 30, 2020		1,346.8		1,027.8		181.4	1,830.7	7,139.8		(1,614.2)		(6,509.9)	319
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		1,344.3		1,358.1				1,358.1					(13.8)
Other comprehensive income (loss)		596.4		597.1						597.1			(0.7)
Common stock issued (including share-based compensation impact)		206.2		206.2			103.5					102.7
Share Repurchases		(301.5)		(301.5)								(301.5)
Cash dividends declared	[1]	(497.5)		(497.5)				(497.5)
Change in noncontrolling interest		(0.6)		(0.6)			(0.6)
End of period at Sep. 30, 2021		$ 2,694.1		$ 2,389.6		$ 181.4	$ 1,933.6	$ 8,000.4		$ (1,017.1)		$ (6,708.7)	$ 304.5
[1]	Cash dividends were $4.28 per share in 2021; $4.08 per share in 2020; and $3.88 per share in 2019.

Consolidated Statement of Sha_2

Consolidated Statement of Shareowners' Equity (Parenthetical) - $ / shares	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Statement of Stockholders' Equity [Abstract]
Cash dividends per share (in dollars per share)	$ 4.28	$ 4.08	$ 3.88

Basis of Presentation and Accou

Basis of Presentation and Accounting Policies	12 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
Basis of Presentation and Accounting Policies	Basis of Presentation and Accounting Policies Rockwell Automation, Inc. (“Rockwell Automation” or “the Company”) is a global leader in industrial automation and digital transformation. We connect the imaginations of people with the potential of technology to expand what is humanly possible, making the world more productive and more sustainable. Basis of Presentation Our consolidated financial statements are prepared in accordance with accounting principles generally accepted in the United States (U.S. GAAP). Principles of Consolidation The accompanying consolidated financial statements include the accounts of the Company and its wholly-owned and controlled majority-owned subsidiaries. Intercompany accounts and transactions have been eliminated in consolidation. Investments in affiliates over which we do not have control but exercise significant influence are accounted for using the equity method of accounting. These affiliated companies are not material individually or in the aggregate to our financial position, results of operations, or cash flows. Use of Estimates The preparation of consolidated financial statements in accordance with U.S. GAAP requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the consolidated financial statements and revenues and expenses during the periods reported. Actual results could differ from those estimates. We use estimates in accounting for, among other items, customer returns, rebates and incentives; allowance for doubtful accounts; excess and obsolete inventory; share-based compensation; acquisitions, including consolidation and intangible assets; goodwill impairment; product warranty obligations; retirement benefits; litigation, claims and contingencies, including environmental matters, conditional asset retirement obligations, and contractual indemnifications; leases; and income taxes. We account for changes to estimates and assumptions prospectively when warranted by factually-based experience. Revenue Recognition On October 1, 2018, we adopted the new standard on revenue from contracts with customers using the modified retrospective method applied to contracts that were not completed as of October 1, 2018. See Note 2 for our revenue recognition policy under the new standard. We recorded a net increase to opening retained earnings of $6.1 million as of October 1, 2018, which reflects the cumulative impact of adopting the new standard. The primary drivers of the impact to retained earnings were changes to the capitalization and deferral of certain contract costs and the timing of revenue, net of costs, for software licenses bundled with services and projects previously accounted for on a completed contract basis. This impact was partially offset by a deferral of revenue, net of costs, related to the allocation of revenue to hardware and software products and services provided to our customers free of charge as incentives. Returns, Rebates and Incentives Our primary incentive program provides distributors with cash rebates or account credits based on agreed amounts that vary depending on the customer to whom our distributor ultimately sells the product. We also offer various other incentive programs that provide distributors and direct sale customers with cash rebates, account credits or additional hardware and software products, solutions and services based on meeting specified program criteria. Certain distributors are offered a right to return product, subject to contractual limitations. We record accruals for customer returns, rebates and incentives at the time of revenue recognition based primarily on historical experience. Returns are presented on the Consolidated Balance Sheet as a right of return asset and refund liability. Incentives in the form of rebates are estimated at the individual customer level and are recorded as a reduction of sales. Customer incentives for additional hardware and software products, solutions and services to be provided are considered distinct performance obligations. As such, we allocate revenue to them based on relative standalone selling price. Until the incentive is redeemed, the revenue is recorded as a contract liability. Taxes on Revenue Producing Transactions Taxes assessed by governmental authorities on revenue producing transactions, including sales, value added, excise and use taxes, are recorded on a net basis (excluded from revenue). Cash and Cash Equivalents Cash and cash equivalents include time deposits, certificates of deposit, and other fixed income securities with original maturities of three months or less at the time of purchase. Receivables We record an allowance for doubtful accounts based on customer-specific analysis and general matters such as current assessments of past due balances and economic conditions. Receivables are recorded net of an allowance for doubtful accounts of $13.2 million at September 30, 2021 and $15.2 million at September 30, 2020. In addition, receivables are recorded net of an allowance for certain customer returns, rebates and incentives of $6.7 million at September 30, 2021 and $8.1 million at September 30, 2020. The changes to our allowance for doubtful accounts during the years ended September 30, 2021 and 2020, were not material and primarily consisted of current-period provisions, write-offs charged against the allowance, recoveries collected, and foreign currency translation. Inventories Inventories are recorded at the lower of cost or market using the first-in, first-out (FIFO) or average cost methods. Market is determined on the basis of estimated realizable values. Investments Investments include time deposits, certificates of deposit, other fixed income securities and equity securities. Investments with original maturities longer than three months at the time of purchase and less than one year from period end are classified as short-term. All other investments are classified as long-term. Fixed income securities meeting the definition of a security are accounted for as available-for-sale and recorded at fair value. Equity securities are recorded at fair value. All other investments are recorded at cost, which approximates fair value. Property Property, including internal-use software, is recorded at cost. Equipment under finance leases are stated at the present value of minimum lease payments. We calculate depreciation of property using the straight-line method over 5 to 40 years for buildings and improvements, 3 to 20 years for machinery and equipment and 3 to 10 years for computer hardware and internal-use software. We capitalize significant renewals and enhancements and write off replaced units. Implementation costs incurred in a cloud computing arrangement that is a service contract are recorded in Other current assets and Other assets on the Consolidated Balance Sheet and are amortized over the expected service period. We expense maintenance and repairs, as well as renewals of minor amounts. Property acquired during the year that is accrued within accounts payable or other current liabilities at year end is considered to be a non-cash investing activity and is excluded from cash used for capital expenditures in the Consolidated Statement of Cash Flows. Capital expenditures of $31.5 million, $27.2 million and $26.4 million were accrued within accounts payable and other current liabilities at September 30, 2021, 2020 and 2019, respectively. Goodwill and Other Intangible Assets Goodwill and other intangible assets generally result from business acquisitions. We account for business acquisitions by allocating the purchase price to tangible and intangible assets acquired and liabilities assumed at their fair values; the excess of the purchase price over the allocated amount is recorded as goodwill. We perform our annual evaluation of goodwill and indefinite life intangible assets for impairment as required under U.S. GAAP during the second quarter of each year, or more frequently if events or circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying value. Any excess in carrying value over the estimated fair value is charged to results of operations. For our annual evaluation of goodwill, we may perform a qualitative test to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount in order to determine whether it is necessary to perform a quantitative goodwill impairment test. Our reporting units for goodwill evaluation consist of the Intelligent Devices segment, the Software & Control segment, the Lifecycle Services segment (excluding Sensia), and Sensia. When performing the quantitative goodwill impairment test, we determine the fair value of each reporting unit under a combination of an income approach derived from discounted cash flows and a market multiples approach using selected comparable public companies. Significant assumptions used in the income approach include: management’s forecasted cash flows, including estimated future revenue growth rates and margins, discount rates, and terminal value. Forecasts of future revenue growth and margins are based on management’s best estimates. Actual results and forecasts of revenue growth and margins for our Sensia reporting unit may be impacted by its concentration within the Oil & Gas industry and with its customer base. Demand for Sensia hardware and software products, solutions, and services is sensitive to industry volatility and risks, including those related to commodity prices, supply and demand dynamics, production costs, geological activity, and political activities. Discount rates are determined using a weighted average cost of capital adjusted for risk factors specific to the reporting unit, with comparison to market and industry data. The terminal value is estimated following the common methodology of calculating the present value of estimated perpetual cash flow beyond the last projected period assuming constant discount and long-term growth rates. Significant assumptions used in the market multiples approach include selection of the comparable public companies and calculation of the appropriate market multiples. We amortize certain customer relationships on an accelerated basis over the period of which we expect the intangible asset to generate future cash flows. We amortize all other intangible assets with finite useful lives on a straight-line basis over their estimated useful lives. Useful lives assigned range from 3 to 15 years for trademarks, 8 to 20 years for customer relationships, 4 to 17 years for technology and 10 to 30 years for other intangible assets. Intangible assets also include costs of software developed or purchased by our software business to be sold, leased or otherwise marketed. Amortization of these computer software products is calculated on a product-by-product basis as the greater of (a) the unamortized cost at the beginning of the year times the ratio of the current year gross revenue for a product to the total of the current and anticipated future gross revenue for that product or (b) the straight-line amortization over the remaining estimated economic life of the product. Impairment of Long-Lived Assets We evaluate the recoverability of the recorded amount of long-lived assets, including property, operating lease right-of-use assets, capitalized implementation costs of a cloud computing arrangement, and other intangible assets, whenever events or changes in circumstances indicate that the recorded amount of an asset may not be fully recoverable. Impairment is assessed when the undiscounted expected future cash flows derived from an asset are less than its carrying amount. If we determine that an asset is impaired, we measure the impairment to be recognized as the amount by which the recorded amount of the asset exceeds its fair value. We report assets to be disposed of at the lower of the recorded amount or fair value less cost to sell. We determine fair value using a discounted future cash flow analysis. Derivative Financial Instruments We use derivative financial instruments in the form of foreign currency forward exchange contracts to manage certain foreign currency risks. We enter into these 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. We also use these contracts to hedge portions of our net investments in certain non-U.S. subsidiaries against the effect of exchange rate fluctuations on the translation of foreign currency balances to the U.S. dollar. Additionally, we use derivative financial instruments in the form of interest rate swap contracts to manage our borrowing costs of certain long-term debt and use treasury locks to manage the potential change in interest rates in anticipation of issuance of fixed rate debt. We designate and account for these derivative financial instruments as hedges under U.S. GAAP. Furthermore, we use foreign currency forward exchange contracts that are not designated as hedges to offset transaction gains or losses associated with some of our assets and liabilities resulting from intercompany loans or other transactions with third parties that are denominated in currencies other than our entities’ functional currencies. It is our policy to execute such instruments with global financial institutions that we believe to be creditworthy and not to enter into derivative financial instruments for speculative purposes. Foreign currency forward exchange contracts are usually denominated in currencies of major industrial countries. Fair Value of Financial Instruments We record various financial instruments at fair value. 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 hold financial instruments consisting of cash and short-term debt. The fair values of our cash and short-term debt approximate their carrying amounts as reported in our Consolidated Balance Sheet due to the short-term nature of these instruments. We also hold financial instruments consisting of long-term debt, investments and derivatives. The valuation methodologies for these financial instruments are described in Notes 7, 10, 11, and 14. We also determine fair value assessments in conjunction with intangible valuations of acquisitions and our annual impairment testing of goodwill and indefinite lived intangible assets. The valuation methodologies for these assets are described in Notes 3 and 4. The methods described in these Notes may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values. Furthermore, while we believe our valuation methods are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different fair value measurement at the reporting date. Foreign Currency Translation We translate assets and liabilities of subsidiaries operating outside of the United States with a functional currency other than the U.S. dollar into U.S. dollars using exchange rates at the end of the respective period. We translate sales, costs and expenses at average exchange rates effective during the respective period. We report foreign currency translation adjustments as a component of other comprehensive income (loss). Currency transaction gains and losses are included in results of operations in the period incurred. Research and Development Expenses We expense research and development (R&D) costs as incurred; these costs were $422.5 million in 2021, $371.5 million in 2020, and $378.9 million in 2019. We include R&D expenses in cost of sales in the Consolidated Statement of Operations. Income Taxes We account for uncertain tax positions by determining whether it is more likely than not that a tax position will be sustained upon examination based on the technical merits of the position. For tax positions that meet the more-likely-than-not recognition threshold, we determine the amount of benefit to recognize in the consolidated financial statements based on our assertion of the most likely outcome resulting from an examination, including the resolution of any related appeals or litigation processes. Earnings Per Share We present basic and diluted earnings per share (EPS) amounts. Basic EPS is calculated by dividing earnings available to common shareowners, which is income excluding the allocation to participating securities, by the weighted average number of common shares outstanding during the year, excluding restricted stock. Diluted EPS amounts are based upon the weighted average number of common and common-equivalent shares outstanding during the year. We use the treasury stock method to calculate the effect of outstanding share-based compensation awards, which requires us to compute total employee proceeds as the sum of the amount the employee must pay upon exercise of the award and the amount of unearned share-based compensation costs attributed to future services. Share-based compensation awards for which the total employee proceeds of the award exceed the average market price of the same award over the period have an antidilutive effect on EPS, and accordingly, we exclude them from the calculation. Antidilutive share-based compensation awards for the years ended September 30, 2021 (0.2 million shares), 2020 (1.6 million shares), and 2019 (1.8 million shares), were excluded from the diluted EPS calculation. U.S. GAAP requires unvested share-based payment awards that contain non-forfeitable rights to dividends or dividend equivalents, whether paid or unpaid, to be treated as participating securities and included in the computation of earnings per share pursuant to the two-class method. Our participating securities are composed of restricted stock and non-employee director restricted stock units. The following table reconciles basic and diluted EPS amounts (in millions, except per share amounts): 2021 2020 2019 Net income attributable to Rockwell Automation $ 1,358.1 $ 1,023.4 $ 695.8 Less: Allocation to participating securities (2.1) (1.0) (0.7) Net income available to common shareowners $ 1,356.0 $ 1,022.4 $ 695.1 Basic weighted average outstanding shares 116.0 115.8 118.3 Effect of dilutive securities Stock options 1.0 0.7 0.9 Performance shares 0.1 0.1 0.1 Diluted weighted average outstanding shares 117.1 116.6 119.3 Earnings per share: Basic $ 11.69 $ 8.83 $ 5.88 Diluted $ 11.58 $ 8.77 $ 5.83 Share-Based Compensation We recognize share-based compensation expense for equity awards on a straight-line basis over the service period of the award based on the fair value of the award as of the grant date. Product and Workers’ Compensation Liabilities We record accruals for product and workers’ compensation claims in the period in which they are probable and reasonably estimable. Our principal self-insurance programs include product liability and workers’ compensation where we self-insure up to a specified dollar amount. Claims exceeding this amount up to specified limits are covered by insurance policies purchased from commercial insurers. We estimate the liability for the majority of the self-insured claims using our claims experience for the periods being valued. Environmental Matters We record liabilities for environmental matters in the period in which our responsibility is probable and the costs can be reasonably estimated. We make changes to the liabilities in the periods in which the estimated costs of remediation change. At third-party environmental sites where more than one potentially responsible party has been identified, we record a liability for our estimated allocable share of costs related to our involvement with the site, as well as an estimated allocable share of costs related to the involvement of insolvent or unidentified parties. If we determine that recovery from insurers or other third parties is probable and a right of setoff exists, we record the liability net of the estimated recovery. If we determine that recovery from insurers or other third parties is probable but a right of setoff does not exist, we record a liability for the total estimated costs of remediation and a receivable for the estimated recovery. At environmental sites where we are the sole responsible party, we record a liability for the total estimated costs of remediation. Ongoing operating and maintenance expenditures included in our environmental remediation obligations are discounted to present value over the probable future remediation period. Our remaining environmental remediation obligations are undiscounted due to subjectivity of timing and/or amount of future cash payments. Conditional Asset Retirement Obligations We record liabilities for costs related to legal obligations associated with the retirement of a tangible, long-lived asset that results from the acquisition, construction, development or the normal operation of the long-lived asset. The obligation to perform the asset retirement activity is not conditional even though the timing or method may be conditional. Leases We have operating leases primarily for real estate, vehicles, and equipment. We have finance leases primarily for equipment. We determine if a contract is, or contains, a lease at contract inception. A right-of-use (ROU) asset and a corresponding lease liability are recognized at commencement for contracts that are, or contain, a lease with an original term greater than 12 months. ROU assets represent our right to use an underlying asset during the lease term, including periods for which renewal options are reasonably certain to be exercised, and lease liabilities represent our obligation to make lease payments arising from the lease. Operating lease expense is recognized on a straight-line basis over the lease term for leases with an original term of 12 months or less. Amortization expense of the ROU asset for finance leases is recognized on a straight-line basis over the lease term and interest expense for finance leases is recognized based on the incremental borrowing rate. Some leasing arrangements require variable payments that are dependent on usage or may vary for other reasons, such as payments for insurance and tax payments. A portion of our real estate leases is generally subject to annual changes based upon an index. The changes based upon the index are treated as variable lease payments. The variable portion of lease payments is not included in our ROU assets or lease liabilities and is expensed when incurred. We elected to not separate lease and nonlease components of contracts for most underlying asset classes. Accordingly, all expenses associated with a lease contract are accounted for as lease expenses. Lease liabilities are recognized at the contract commencement date based on the present value of remaining lease payments over the lease term. To calculate the lease liabilities we use our incremental borrowing rate. We determine our incremental borrowing rate at the commencement date using our unsecured borrowing rate, adjusted for collateralization and lease term. For leases denominated in a currency other than the U.S. dollar, the collateralized borrowing rate in the foreign currency is determined using the U.S. dollar and foreign currency swap spread. Long-term operating lease liabilities are presented as Operating lease liabilities and current operating lease liabilities are included in Other current liabilities Long-term debt Other current liabilities ROU assets are recognized at the contract commencement date at the value of the related lease liability, adjusted for any prepayments, lease incentives received and initial direct costs incurred. Operating lease ROU assets are presented as Operating lease right-of-use assets and finance lease ROU assets are presented as Property in the Consolidated Balance Sheet. Lease expenses, including amortization of ROU assets, for operating and finance leases are recognized on a straight-line basis over the lease term and recorded in Cost of sales and Selling, general and administrative expenses in the Consolidated Statement of Operations. Interest expense for finance leases is recorded in Interest expense in the Consolidated Statement of Operations. Recently Adopted Accounting Pronouncements In February 2016, the FASB issued a new standard on accounting for leases that requires lessees to recognize ROU assets and lease liabilities for most leases, among other changes to existing lease accounting guidance. This standard also requires additional qualitative and quantitative disclosures about leasing activities. We adopted this standard using the modified retrospective transition method, which resulted in an immaterial cumulative-effect adjustment to the opening balance of retained earnings as of October 1, 2019, our adoption date. The amount of lease ROU assets and corresponding lease liabilities recorded in the Consolidated Balance Sheet upon adoption were $316 million and $329 million, respectively. We have implemented necessary changes to accounting policies, processes, controls and systems to enable compliance with this standard. In February 2018, the FASB issued a new standard regarding the reporting of comprehensive loss, which gives entities the option to reclassify tax effects of the Tax Cuts and Jobs Act of 2017 (the “Tax Act”) stranded in accumulated other comprehensive loss into retained earnings. We adopted this standard as of October 1, 2019, and elected to reclassify tax effects of approximately $147 million from accumulated other comprehensive loss into retained earnings. In June 2016, the FASB issued a new standard that requires companies to utilize a current expected credit losses impairment (CECL) model for certain financial assets, including trade and other receivables. The CECL model requires that estimated expected credit losses, including allowance for doubtful accounts, consider a broader range of information such as economic conditions and expected changes in market conditions. We adopted the new standard as of October 1, 2020. The adoption of this standard did not have a material impact on our Consolidated Financial Statements. Recently Issued Accounting Pronouncements We do not expect any recently issued accounting pronouncements to have a material impact on our consolidated financial statements and related disclosures.

Revenue Recognition (Notes)

Revenue Recognition (Notes)	12 Months Ended
	Sep. 30, 2021
Revenue from Contract with Customer [Abstract]
Revenue Recognition	Revenue Recognition Nature of Products and Services Substantially all of our revenue is from contracts with customers. We recognize revenue as promised products are transferred to, or services are performed for, customers in an amount that reflects the consideration to which we expect to be entitled in exchange for those products and services. Our offerings consist of industrial automation and information products, solutions and services. Our products include hardware, software, and configured-to-order products. Our solutions include custom-engineered systems and software. Our services include customer technical support and repair, asset management and optimization consulting, and training. Also included in our services is a portion of revenue related to spare parts that are managed within our services offering. Our operations are comprised of the Intelligent Devices segment, Software & Control segment, and Lifecycle Services segment. Revenue from the Intelligent Devices and Software & Control segments is predominantly comprised of product sales which are recognized at a point in time. The Software & Control segment also contains revenue from software products which may be recognized over time if certain criteria are met. Revenue from the Lifecycle Services segment is predominantly comprised of solutions and services which are primarily recognized over time. See Note 19 for more information. In most countries, we sell primarily through independent distributors in conjunction with our direct sales force. We sell large systems and service offerings principally through our direct sales force, though opportunities are sometimes identified through distributors. Performance Obligations We use executed sales agreements and purchase orders to determine the existence of a customer contract. For each customer contract, we determine if the products and services promised to the customer are distinct performance obligations. A product or service is distinct if both of the following criteria are met at contract inception: (i) the customer can benefit from the product or service on its own or together with other readily available resources, and (ii) our promise to transfer the product or perform the service is separately identifiable from other promises in the contract. The fact that we regularly sell a product or service separately is an indicator that the customer can benefit from a product or service on its own or with other readily available resources. The objective when assessing whether our promises to transfer products or perform services are distinct within the context of the contract is to determine whether the nature of the promise is to transfer each of those products or perform those services individually, or whether the promise is to transfer a combined item or items to which the promised products or services are inputs. If a promised product or service is not distinct, we combine that product or service with other promised products or services until it comprises a bundle of products or services that is distinct, which may result in accounting for all the products or services in a contract as a single performance obligation. For each performance obligation in a contract, we determine whether the performance obligation is satisfied over time. A performance obligation is satisfied over time if it meets any of the following criteria: (i) the customer simultaneously receives and consumes the benefits provided by our performance as we perform, (ii) our performance creates or enhances an asset that the customer controls as the asset is created or enhanced, or (iii) our performance does not create an asset for which we have an alternative use and we have an enforceable right to payment for performance completed to date. If one or more of these criteria are met, then we recognize revenue over time using a method that depicts performance. If none of the criteria are met, then control transfers to the customer at a point in time and we recognize revenue at that point in time. Our products represent standard, catalog products for which we have an alternative use, and therefore we recognize revenue at a point in time when control of the product transfers to the customer. For the majority of our products, control transfers upon shipment, though for some contracts control may transfer upon delivery. Our product revenue also includes revenue from software licenses. When these licenses are determined to be distinct performance obligations, we recognize the related revenue at a point in time when the customer is provided the right to use the license. Product-type contracts are generally one year or less in length. We offer a wide variety of solutions and services to our customers, for which we recognize revenue over time or at a point in time based on the contract as well as the type of solution or service. If one or more of the three criteria above for over-time revenue recognition are met, we recognize revenue over time as cost is incurred, as work is performed, or based on time elapsed, depending on the type of customer contract. If none of these criteria are met, we recognize revenue at a point in time when control of the asset being created or enhanced transfers to the customer, typically upon delivery. More than half of our solutions and services revenue is from contracts that are one year or less in length. For certain solutions and services offerings, when we have the right to invoice our customers in an amount that corresponds to our performance completed to date, we apply the practical expedient to measure progress and recognize revenue based on the amount for which we have the right to invoice the customer. When assessing whether we have an alternative use for an asset, we consider both contractual and practical limitations. These include: (i) the level and cost of customization of the asset that is required to meet a customer’s needs, (ii) the activities, cost, and profit margin after any rework that would be required before the asset could be directed for another use, and (iii) the portion of the asset that could not be reworked for an alternative use. At times we provide products and services free of charge to our customers as incentives when the customers purchase other products or services. These represent distinct performance obligations. As such, we allocate revenue to them based on relative standalone selling price. Most of our global warranties are assurance in nature and do not represent distinct performance obligations. See Note 9 for additional information and disclosures. We occasionally offer extended warranties to our customers that are considered a distinct performance obligation, to which we allocate revenue which is recognized over the extended warranty period. We account for shipping and handling activities performed after control of a product has been transferred to the customer as a fulfillment cost. As such, we have applied the practical expedient and we accrue for the costs of shipping and handling activities if revenue is recognized before contractually agreed shipping and handling activities occur. Unfulfilled Performance Obligations As of September 30, 2021, we expect to recognize approximately $655 million of revenue in future periods from unfulfilled performance obligations from existing contracts with customers. We expect to recognize revenue of approximately $385 million of our remaining performance obligations over the next 12 months with the remaining balance recognized thereafter. We have applied the practical expedient to exclude the value of remaining performance obligations for (i) contracts with an original term of one year or less and (ii) contracts for which we recognize revenue in proportion to the amount we have the right to invoice for services performed. The amounts above also do not include the impact of contract renewal options that are unexercised as of September 30, 2021. Transaction Price The transaction price is the amount of consideration to which we expect to be entitled in exchange for transferring products to, or performing services for, a customer. We estimate the transaction price at contract inception, and update the estimate each reporting period for any changes in circumstances. In some cases a contract may involve variable consideration, including rebates, credits, allowances for returns or other similar items that generally decrease the transaction price. We use historical experience to estimate variable consideration, including any constraint. The transaction price (including any discounts and variable consideration) is allocated between separate products and services based on their relative standalone selling prices. The standalone selling prices are determined based on the prices at which we separately sell each good or service. For items that are not sold separately, we estimate the standalone selling price using available information such as market reference points and other observable data. We have elected the practical expedient to exclude sales taxes and other similar taxes from the measurement of the transaction price. Significant Payment Terms Our standard payment terms vary globally but do not result in a significant delay between the timing of invoice and payment. We occasionally negotiate other payment terms during the contracting process. We do not typically include significant financing components in our contracts with customers. We have elected the practical expedient to not adjust the transaction price for the period between transfer of products or performance of services and customer payment if expected to be one year or less. For most of our products, we invoice at the time of shipment and we do not typically have significant contract balances. For our solutions and services as well as some of our products, timing may differ between revenue recognition and billing. Depending on the terms agreed to with the customer, we may invoice in advance of performance or we may invoice after performance. When revenue recognition exceeds billing we recognize a receivable, and when billing exceeds revenue recognition we recognize a contract liability. Disaggregation of Revenue The following table presents our revenue disaggregation by geographic region for our three operating segments (in millions). We attribute sales to the geographic regions based on the country of destination. Information for the fiscal year ended September 30, 2020, has been recast to reflect our new operating segments. See Note 19 for further information on our change in operating segments. Year Ended September 30, 2021 Year Ended September 30, 2020 Intelligent Devices Software & Control Lifecycle Services Total Intelligent Devices Software & Control Lifecycle Services Total North America $ 2,075.4 $ 1,186.3 $ 871.1 $ 4,132.8 $ 1,860.1 $ 1,027.5 $ 872.6 $ 3,760.2 Europe, Middle East and Africa (EMEA) 595.9 375.0 434.8 1,405.7 518.5 300.5 430.3 1,249.3 Asia Pacific 432.5 273.9 305.8 1,012.2 372.6 254.1 242.0 868.7 Latin America 208.1 111.8 126.8 446.7 204.8 99.2 147.6 451.6 Total Company Sales $ 3,311.9 $ 1,947.0 $ 1,738.5 $ 6,997.4 $ 2,956.0 $ 1,681.3 $ 1,692.5 $ 6,329.8 Contract Balances Contract liabilities primarily relate to consideration received in advance of performance under the contract. We do not have significant contract assets as of September 30, 2021. Below is a summary of our contract liabilities balance: September 30, 2021 September 30, 2020 Balance as of beginning of fiscal year $ 325.3 $ 275.6 Balance as of end of period 462.5 325.3 The most significant changes in our contract liabilities balance during the twelve months ended September 30, 2021 were due to amounts billed, partially offset by revenue recognized that was included in the contract liabilities balance at the beginning of the period. In the twelve months ended September 30, 2021, we recognized revenue of approximately $256.1 million that was included in the opening contract liabilities balance. We did not have a material amount of revenue recognized in the twelve months ended September 30, 2021, from performance obligations satisfied or partially satisfied in previous periods. Costs to Obtain and Fulfill a Contract We capitalize and amortize certain incremental costs to obtain and fulfill contracts. These costs primarily consist of incentives paid to sales personnel, which are considered incremental costs to obtain customer contracts. We elected the practical expedient to expense incremental costs to obtain a contract when the contract has a duration of one year or less for most classes of contracts. Our capitalized contract costs, which are included in other assets in our Consolidated Balance Sheet, are not significant. There was no impairment loss in relation to capitalized costs in the period.

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	12 Months Ended
	Sep. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets Changes in the carrying amount of goodwill were (in millions): Architecture & Control Products Intelligent Devices Software & Control Lifecycle Services Total Balance as of September 30, 2019 $ 432.3 $ 638.8 $ — $ — $ — $ 1,071.1 Acquisition of businesses 161.2 390.7 — — — 551.9 Translation 15.9 11.4 — — — 27.3 Balance as of September 30, 2020 609.4 1,040.9 — — — 1,650.3 Reallocation due to change in segments (609.4) (1,040.9) 535.1 497.3 617.9 — Acquisition of businesses — — — 1,937.3 12.8 1,950.1 Translation — — 8.0 12.9 4.6 25.5 Balance as of September 30, 2021 $ — $ — $ 543.1 $ 2,447.5 $ 635.3 $ 3,625.9 During the first quarter of fiscal 2021, we changed our organizational structure resulting in three operating segments: Intelligent Devices, Software & Control, and Lifecycle Services. This change also resulted in the identification of new reporting units. We reassigned our goodwill balances to reflect this new structure using the relative fair value allocation approach required under U.S. GAAP. Under this approach, the fair values of each of our new reporting units were compared to the total fair value of their prior respective reporting units immediately prior to the reorganization to arrive at the reassigned goodwill balances. We determined the reporting unit fair values using the same approach for quantitative goodwill impairment tests described in Note 1, and these values are considered level 3 measurements under the U.S. GAAP fair value hierarchy. We also tested goodwill at the affected reporting units for impairment prior to and subsequent to the reassignment of goodwill and concluded that goodwill was not impaired. We performed our annual evaluation of goodwill and indefinite life intangible assets for impairment during the second quarter of 2021 and concluded that these assets were not impaired. We also assessed the changes in events and circumstances subsequent to our annual test and concluded that a triggering event which would require interim quantitative testing has not occurred. Refer to Note 1 for additional information on our annual impairment evaluation. Other intangible assets consist of (in millions): September 30, 2021 Carrying Accumulated Net Amortized intangible assets: Software products $ 90.4 $ 43.2 $ 47.2 Customer relationships 595.9 75.4 520.5 Technology 420.8 71.7 349.1 Trademarks 73.8 13.3 60.5 Other 7.1 6.3 0.8 Total amortized intangible assets 1,188.0 209.9 978.1 Allen-Bradley ® trademark not subject to amortization 43.7 — 43.7 Total $ 1,231.7 $ 209.9 $ 1,021.8 September 30, 2020 Carrying Accumulated Net Amortized intangible assets: Software products $ 192.7 $ 139.0 $ 53.7 Customer relationships 351.3 92.5 258.8 Technology 165.8 84.0 81.8 Trademarks 71.7 31.3 40.4 Other 14.4 13.5 0.9 Total amortized intangible assets 795.9 360.3 435.6 Allen-Bradley ® trademark not subject to amortization 43.7 — 43.7 Total $ 839.6 $ 360.3 $ 479.3 Software products represent costs of computer software to be sold, leased or otherwise marketed. Software products amortization expense was $11.9 million in 2021, $10.2 million in 2020 and $10.4 million in 2019. Estimated total amortization expense for all amortized intangible assets is $112.0 million in 2022, $110.6 million in 2023, $107.6 million in 2024, $105.3 million in 2025 and $103.7 million in 2026.

Acquisitions

Acquisitions	12 Months Ended
	Sep. 30, 2021
Business Combinations [Abstract]
Acquisitions	Acquisitions Fiscal 2021 Acquisitions Plex acquisition In August 2021, we acquired Plex Systems, a cloud-native smart manufacturing platform. Plex offers a single-instance, multi-tenant Software-as-a-Service manufacturing platform operating at scale, including advanced manufacturing execution systems, quality, and supply chain management capabilities. We recorded assets acquired and liabilities assumed in connection with this acquisition based on their estimated fair values as of the acquisition date of August 31, 2021. The preliminary aggregate purchase price allocation is as follows (in millions): Purchase Price Allocation Accounts receivable $ 14.8 All other assets 28.3 Goodwill 1,725.3 Intangible assets 531.4 Total assets acquired 2,299.8 Less: Contract liabilities (29.2) Less: Other liabilities assumed (31.8) Less: Deferred income taxes (33.3) Net assets acquired $ 2,205.5 Purchase Consideration Total purchase consideration, net of cash acquired $ 2,205.5 Intangible assets identified include $276.4 million of customer relationships, $232.8 million of technology, and $22.2 million of trade names (approximately 12-year weighted average useful life). We assigned the full amount of goodwill and all other assets acquired to our Software & Control segment. The goodwill recorded represents intangible assets that do not qualify for separate recognition. This goodwill arises because the purchase price for Plex reflects a number of factors including the future earnings and cash flow potential of the business, the strategic fit and resulting synergies from the complementary portfolio of leading software-as-a-service applications, industry expertise, and market access. We do not expect the goodwill to be deductible for tax purposes. The intangible assets were valued using an income approach, specifically the relief from royalty method and multi-period excess earnings method. The relief from royalty method calculates value based on hypothetical payments that would be saved by owning an asset rather than licensing it. The multi-period excess earnings method is the isolation of cash flows from a single intangible asset and measures fair value by discounting them to present value. These values are considered level 3 measurements under the U.S. GAAP fair value hierarchy. The key assumption requiring the use of judgement in the valuation of the customer relationship intangible asset was the customer attrition rate of 5 percent; other assumptions included forecasted cash flows attributable to the existing customers and the discount rate. The key assumptions requiring the use of judgement in the valuation of the technology intangible asset were the royalty rate of 25 percent and the obsolescence factor estimating a phase out over 10 years; other assumptions included forecasted revenue growth rates and the discount rate. Other acquisitions In October 2020, we acquired Oylo, a privately-held industrial cybersecurity services provider based in Barcelona, Spain. We assigned the full amount of goodwill related to this acquisition to our Lifecycle Services segment. In December 2020, we acquired Fiix Inc., a privately-held, artificial intelligence enabled computerized maintenance management system (CMMS) company based in Toronto, Ontario, Canada. We assigned the full amount of goodwill related to this acquisition to our Software & Control segment. We recorded assets acquired and liabilities assumed in connection with these acquisitions based on their estimated fair values as of the respective acquisition dates. The preliminary aggregate purchase price allocation for these acquisitions is as follows (in millions): Purchase Price Allocation Accounts receivable $ 6.0 All other assets 15.9 Goodwill 224.8 Intangible assets 69.6 Total assets acquired 316.3 Less: Liabilities assumed (25.5) Less: Deferred income taxes (3.7) Net assets acquired $ 287.1 Purchase Consideration Total purchase consideration, net of cash acquired $ 287.1 Intangible assets identified include $69.6 million of customer relationships, technology, and trade names (approximately 11-year weighted average useful life). We assigned $12.8 million of goodwill to our Lifecycle Services segment and $212.0 million of goodwill to our Software & Control segment, which represents intangible assets that do not qualify for separate recognition. We do not expect the goodwill to be deductible for tax purposes. The allocation of the purchase price to identifiable assets for all of the preceding acquisitions are based on the preliminary valuations performed to determine the fair value of the net assets as of their respective acquisition dates. The measurement period for the valuation of net assets acquired ends as soon as information on the facts and circumstances that existed as of the acquisition dates becomes available, but not to exceed 12 months following the acquisition date. Adjustments in purchase price allocations may require a change in the amounts allocated to net assets acquired during the periods in which the adjustments are determined. The total sales included in our consolidated results for all of the preceding acquisitions for the year ended September 30, 2021, were approximately $27.9 million. Pro forma consolidated sales for the year ended September 30, 2021 and 2020, were approximately $7.2 billion and $6.5 billion, respectively, and the impact on earnings is not material. The preceding pro forma consolidated financial results of operations are as if all of preceding fiscal 2021 acquisitions occurred on October 1, 2019. The pro forma information is presented for informational purposes only and is not indicative of the results of operations that would have been achieved had the transaction occurred as of that time. Acquisition-related costs recorded as expenses for all of the preceding acquisitions in the year ended September 30, 2021, were not material. Fiscal 2020 Acquisitions Sensia joint venture On October 1, 2019, we completed the formation of a joint venture, Sensia, a fully integrated digital oilfield automation solutions provider. Rockwell Automation owns 53% of Sensia and Schlumberger owns 47% of Sensia. As part of the transaction, we made $247.0 million of net cash payments to Schlumberger, which were funded by cash on hand. We control Sensia and, as of October 1, 2019, have consolidated Sensia in our financial results. As part of the joint venture operations, Sensia regularly transacts with Schlumberger, primarily relating to purchases and sales of goods and services. These transactions are not material to Rockwell Automation for the year ended September 30, 2021 and 2020. We recorded assets acquired and liabilities assumed in connection with the formation of Sensia based on their estimated fair values as of the acquisition date of October 1, 2019. The preliminary purchase price allocation is as follows (in millions): Purchase Price Allocation Accounts receivable $ 31.2 Inventory 33.2 Other current assets 1.2 Property, plant and equipment 9.3 Other assets 6.2 Goodwill 307.4 Intangible assets 254.1 Total assets acquired 642.6 Less: Liabilities assumed (18.3) Less: Deferred income taxes (2.6) Less: Noncontrolling interest portion (293.8) Net assets acquired $ 327.9 Purchase Consideration Cash, net of cash acquired $ 247.0 Noncontrolling interest portion of Rockwell Automation's contributed business 25.8 Additional paid in capital adjustment 48.1 Other 7.0 Total purchase consideration, net of cash acquired $ 327.9 Intangible assets assigned include $254.1 million of customer relationships, technology, and trade names (approximately 11-year weighted average useful life). We assigned the full amount of goodwill and all other assets acquired to our Lifecycle Services segment. The majority of the goodwill recorded is expected to be deductible for tax purposes. The assets were valued using an income approach, specifically the relief from royalty method and multi-period excess earnings method. The relief from royalty method calculates value based on hypothetical payments that would be saved by owning an asset rather than licensing it. The multi-period excess earnings method is the isolation of cash flows from a single intangible asset and measures fair value by discounting them to present value. These values are considered level 3 measurements under the U.S. GAAP fair value hierarchy. Key assumptions used in the valuation of these intangible assets included: (1) a discount rate of 11%, (2) the estimated remaining life of technology and trademarks of from 5 to 15 years, and (3) the customer attrition rate ranging from 7.5% to 25%. The fair value of the noncontrolling interest of the contributed business upon acquisition was $293.8 million. The consolidated value of Sensia at October 1, 2019, was recorded at fair value for Schlumberger's contribution and at carrying value for Rockwell Automation's contribution. The total incremental sales resulting from the Sensia joint venture included in our consolidated results for the twelve months ended September 30, 2020, were approximately $191.0 million. Other acquisitions In October 2019, we acquired MESTECH Services (MESTECH), a global provider of Manufacturing Execution Systems / Manufacturing Operations Management, digital solutions consulting, and systems integration services. We assigned the full amount of goodwill related to this acquisition to our Lifecycle Services segment. In January 2020, we acquired Avnet Data Security, LTD (Avnet), an Israel-based cybersecurity provider with over 20 years of experience providing cybersecurity services. We assigned the full amount of goodwill related to this acquisition to our Lifecycle Services segment. In April 2020, we acquired ASEM, S.p.A. (ASEM), a leading provider of digital automation technologies. We assigned the full amount of goodwill related to this acquisition to our Software & Control segment. In April 2020, we also acquired Kalypso, LP (Kalypso), a privately-held U.S.-based software delivery and consulting firm specializing in the digital transformation of industrial companies with a strong client base in life sciences, consumer products and industrial high-tech. We assigned the full amount of goodwill related to this acquisition to our Lifecycle Services segment. We recorded assets acquired and liabilities assumed in connection with these acquisitions based on their estimated fair values as of the respective acquisition dates. The preliminary aggregate purchase price allocation for these acquisitions is as follows (in millions): Purchase Price Allocation Accounts receivable $ 33.8 Inventory 9.6 Other current assets 1.0 Property, plant and equipment 5.9 Other assets 2.2 Goodwill 244.5 Intangible assets 76.5 Total assets acquired 373.5 Less: Liabilities assumed (28.6) Less: Deferred income taxes (14.4) Net assets acquired $ 330.5 Purchase Consideration Total purchase consideration, net of cash acquired $ 330.5 Intangible assets assigned include $76.5 million of customer relationships, technology, and trade names (approximately 10-year weighted average useful life). We assigned $161.2 million of goodwill to our Software & Control segment and $83.3 million of goodwill to our Lifecycle Services segment. Approximately $69.0 million of the goodwill recorded is expected to be deductible for tax purposes. The purchase consideration includes $25.8 million of contingent consideration held in an escrow account and recorded in other assets as restricted cash in the Consolidated Balance Sheet. The total sales included in our consolidated results from these four acquisitions for the twelve months ended September 30, 2020, were approximately $41.8 million. The allocation of the purchase price to identifiable assets for all of the preceding acquisitions are based on the preliminary valuations performed to determine the fair value of the net assets as of the acquisition date. The measurement period for the valuation of net assets acquired ends as soon as information on the facts and circumstances that existed as of the acquisition dates becomes available, but not to exceed 12 months following the acquisition date. Adjustments in purchase price allocations may require a change in the amounts allocated to net assets acquired during the periods in which the adjustments are determined. Pro forma consolidated sales for the year ended September 30, 2019, are approximately $7.0 billion, and the impact on earnings is not material. The preceding pro forma consolidated financial results of operations are as if all of the preceding fiscal 2020 acquisitions occurred on October 1, 2018. The pro forma information is presented for informational purposes only and is not indicative of the results of operations that would have been achieved had the transaction occurred as of that time. Acquisition-related costs recorded as expenses for all of the preceding acquisitions in the year ended September 30, 2020, were not material.

Inventories

Inventories	12 Months Ended
	Sep. 30, 2021
Inventory Disclosure [Abstract]
Inventories	Inventories Inventories consist of (in millions): September 30, 2021 2020 Finished goods $ 287.0 $ 243.0 Work in process 229.3 159.1 Raw materials 281.8 181.9 Inventories $ 798.1 $ 584.0

Property, net

Property, net	12 Months Ended
	Sep. 30, 2021
Property, Plant and Equipment [Abstract]
Property, net	Property, net Property consists of (in millions): September 30, 2021 2020 Land $ 4.8 $ 4.8 Buildings and improvements 397.6 383.0 Machinery and equipment 1,244.3 1,220.7 Internal-use software 522.4 506.4 Construction in progress 156.4 134.4 Total 2,325.5 2,249.3 Less accumulated depreciation (1,743.6) (1,674.9) Property, net $ 581.9 $ 574.4

Long-term and Short-term Debt

Long-term and Short-term Debt	12 Months Ended
	Sep. 30, 2021
Debt Disclosure [Abstract]
Long-term and Short-term Debt	Long-term and Short-term Debt Long-term debt consists of (in millions): September 30, 2021 2020 0.35% notes, payable in August 2023 $ 600.0 $ — 2.875% notes, payable in March 2025 315.6 320.1 6.70% debentures, payable in January 2028 250.0 250.0 3.50% notes, payable in March 2029 425.0 425.0 1.75% notes, payable in August 2031 450.0 — 6.25% debentures, payable in December 2037 250.0 250.0 4.20% notes, payable in March 2049 575.0 575.0 2.80% notes, payable in August 2061 450.0 — 5.20% debentures, payable in January 2098 200.0 200.0 Unamortized discount, capitalized lease obligations and other (51.0) (45.4) Long-term debt $ 3,464.6 $ 1,974.7 Our short-term debt as of September 30, 2021, includes $484.0 million of commercial paper borrowings with a weighted average interest rate of 0.18 percent. There were no commercial paper borrowings outstanding as of September 30, 2020. Also included in short-term debt as of September 30, 2021, and 2020, are $23.5 million of interest-bearing loans from Schlumberger to Sensia, which were originally due September 30, 2020, and are now due December 31, 2021. The short-term loans from Schlumberger were entered into following formation of Sensia in fiscal 2020. In August 2021, we issued $1.5 billion aggregate principal amount of long-term notes in a registered public offering. The offering consisted of $600.0 million of 0.35% notes due in August 2023, $450.0 million of 1.75% notes due in August 2031, and $450.0 million of 2.80% notes due in August 2061, all issued at a discount. Net proceeds to the Company from the debt offering were $1,485.6 million. We used these net proceeds primarily to fund the acquisition of Plex. Refer to Note 4 for additional information on this acquisition. We entered into treasury locks to manage the potential change in interest rates in anticipation of the issuance of the $1.5 billion aggregate notes in August 2021. These treasury locks were designated as and accounted for as cash flow hedges. As a result of the changes in the interest rates on the treasury locks between the time we entered into the treasury locks and the time we priced and issued the notes, the Company made a net payment of $28.0 million to the counterparties. The $28.0 million net loss on the settlement of the treasury locks was recorded in Accumulated Other Comprehensive Loss, net of tax effect, and is being amortized over the term of the corresponding notes, and recognized as an adjustment to interest expense in the Consolidated Statement of Operations. In April 2020, we entered into a $400.0 million senior unsecured 364-day term loan credit agreement and were advanced the full loan amount. Interest on these borrowings was based on short-term money market rates in effect during the period the borrowings were outstanding. We repaid the $400.0 million term loan in September 2020. In March 2019, we issued $1 billion aggregate principal amount of long-term notes in a registered public offering. The offering consisted of $425.0 million of 3.50% notes due in March 2029 (“2029 Notes”) and $575.0 million of 4.20% notes due in March 2049 (“2049 Notes”), both issued at a discount. Net proceeds to the Company from the debt offering were $987.6 million. We used these net proceeds primarily to repay our outstanding commercial paper, with the remaining proceeds used for general corporate purposes. We entered into treasury locks to manage the potential change in interest rates in anticipation of the issuance of $1.0 billion of fixed rate debt in March 2019. Treasury locks are accounted for as cash flow hedges. The effective differentials paid on these treasury locks was initially recorded in Accumulated Other Comprehensive Loss, net of tax effect. As a result of the changes in the interest rates on the treasury locks between the time we entered into the treasury locks and the time we priced and issued the 2029 Notes and 2049 Notes, the Company made a payment of $35.7 million to the counterparty on March 1, 2019. The $35.7 million loss on the settlement of the treasury locks was recorded in Accumulated Other Comprehensive Loss and is being amortized over the term of the 2029 Notes and 2049 Notes, and recognized as an adjustment to interest expense in the Consolidated Statement of Operations. On November 13, 2018, we replaced our former five-year $1.0 billion unsecured revolving credit facility with a new five-year $1.25 billion unsecured revolving credit facility expiring in November 2023. We can increase the aggregate amount of this credit facility by up to $750.0 million, subject to the consent of the banks in the credit facility. We did not incur early termination penalties in connection with the termination of the former credit facility. We did not borrow against the facility during the periods ended September 30, 2021 or 2020. Borrowings under the new credit facility bear interest based on short-term money market rates in effect during the period the borrowings are outstanding. This credit facility contains covenants under which we agree to maintain an EBITDA-to-interest ratio of at least 3.0 to 1.0. The EBITDA-to-interest ratio is defined in the credit facility as the ratio of consolidated EBITDA (as defined in the facility) for the preceding four quarters to consolidated interest expense for the same period. Interest payments were $91.8 million during 2021, $101.7 million during 2020 and $97.5 million during 2019. The following table presents the carrying amounts and estimated fair values of long-term debt not recorded at fair value in the Consolidated Balance Sheet (in millions): September 30, 2021 September 30, 2020 Carrying Value Fair Value Carrying Value Fair Value Long-term debt $ 3,464.6 $ 3,874.8 $ 1,974.7 $ 2,497.7 We base the fair value of long-term debt upon quoted market prices for the same or similar issues and therefore consider this a Level 2 fair value measurement. The fair value of long-term debt considers the terms of the debt excluding the impact of derivative and hedging activity. Refer to Note 1 for further information regarding levels in the fair value hierarchy.

Other Current Liabilities

Other Current Liabilities	12 Months Ended
	Sep. 30, 2021
Other Liabilities Disclosure [Abstract]
Other Current Liabilities	Other Current Liabilities Other current liabilities consist of (in millions): September 30, 2021 2020 Unrealized losses on foreign exchange contracts (Note 11) $ 16.9 $ 24.3 Product warranty obligations (Note 9) 18.0 20.8 Taxes other than income taxes 59.8 58.5 Accrued interest 17.8 14.9 Income taxes payable 188.4 79.8 Operating lease liabilities 89.9 89.7 Other 93.6 88.5 Other current liabilities $ 484.4 $ 376.5

Product Warranty Obligations

Product Warranty Obligations	12 Months Ended
	Sep. 30, 2021
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 known and reasonably estimable. Changes in product warranty obligations were (in millions): September 30, 2021 2020 Beginning balance $ 20.8 $ 25.2 Warranties recorded at time of sale 17.3 17.8 Adjustments to pre-existing warranties (6.2) (1.6) Settlements of warranty claims (13.9) (20.6) Ending balance $ 18.0 $ 20.8

Investments

Investments	12 Months Ended
	Sep. 30, 2021
Investments, Debt and Equity Securities [Abstract]
Investments	Investments Our investments consist of (in millions): September 30, 2021 2020 Fixed income securities $ 0.6 $ 0.6 Equity securities 1,267.6 875.3 Other 95.9 78.2 Total investments 1,364.1 954.1 Less: short-term investments (1) (0.6) (0.6) Long-term investments $ 1,363.5 $ 953.5 (1) Short-term investments are included in other current assets in the Consolidated Balance Sheet. Equity Securities On July 19, 2018, we purchased 10,582,010 shares of PTC Inc. (“PTC”) common stock (the “PTC Shares”) in a private placement at a purchase price of $94.50 per share for an aggregate purchase price of approximately $1.0 billion. The PTC Shares are considered equity securities. On May 11, 2021, we entered into an amendment to the securities purchase agreement with PTC, which amended, among other things, our entity-specific transfer restrictions through September 2023, subject to certain exceptions. We have the ability to transfer in open market transactions, in the aggregate in any 90-day period, a number of PTC Shares equal to up to 1.0 percent of PTC's total outstanding shares of common stock as of the first day in such 90-day period. We also have the ability to transfer in marketed underwritten public offerings, in the aggregate in any one-year period, a number of PTC Shares equal to up to 5.0 percent of PTC's total outstanding shares of common stock as of the closing date of the first such offering. The PTC Shares are classified as level 1 in the fair value hierarchy and recognized at fair value in the Consolidated Balance Sheet using the most recent closing price of PTC common stock quoted on Nasdaq. At September 30, 2021, the fair value of the PTC Shares was $1,267.6 million, which was recorded in long-term investments in the Consolidated Balance Sheet. We recorded a gain of $392.3 million and $153.9 million related to the PTC Shares in the Consolidated Statement of Operations in the years ended September 30, 2021 and 2020, respectively. Refer to Note 1 for further information regarding levels in the fair value hierarchy. We did not have any transfers between levels of fair value measurements during the periods presented.

Derivative Instruments

Derivative Instruments	12 Months Ended
	Sep. 30, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments	Derivative Instruments 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 and treasury locks 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 consolidated financial statements. Additional information related to the impacts of cash flow hedges on other comprehensive income (loss) is included in Note 12. 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 September 30, 2021, we had a U.S. dollar-equivalent gross notional amount of $800.2 million of foreign currency forward exchange contracts designated as cash flow hedges. We entered into treasury locks to manage the potential change in interest rates in anticipation of the issuance of $1.5 billion and $1.0 billion of fixed rate debt in August 2021 and March 2019, respectively. Treasury locks are accounted for as cash flow hedges since they hedge the risk of an increase in treasury rates for the forecasted interest payments of an anticipated fixed-rate debt issuance. The pre-tax amount of gains (losses) recorded in other comprehensive income (loss) related to cash flow hedges that would have been recorded in the Consolidated Statement of Operations had they not been so designated was (in millions): 2021 2020 2019 Forward exchange contracts $ (10.8) $ (9.7) $ 29.5 Treasury locks (28.0) — (35.7) The pre-tax amount of gains (losses) reclassified from accumulated other comprehensive loss into the 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): 2021 2020 2019 Sales $ 1.9 $ (0.7) $ 1.0 Cost of sales (25.4) 19.6 18.2 Selling, general and administrative expenses 1.5 (1.4) (1.3) Interest expense (2.3) (2.1) (1.2) Total $ (24.3) $ 15.4 $ 16.7 Approximately $0.1 million of pre-tax net unrealized gains on cash flow hedges as of September 30, 2021 will be reclassified into earnings during the next twelve 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 September 30, 2021, we had no foreign currency forward exchange contracts designated as net investment hedges. The pre-tax amount of (losses) gains recorded in other comprehensive income (loss) related to net investment hedges that would have been recorded in the Consolidated Statement of Operations had they not been so designated was (in millions): 2021 2020 2019 Forward exchange contracts $ (0.8) $ (1.3) $ (4.9) Fair Value Hedges We used interest rate swap contracts to manage the borrowing costs of certain long-term debt. In February 2015, we issued $600.0 million aggregate principal amount of fixed rate notes. Upon issuance of these notes, we entered into fixed-to-floating interest rate swap contracts that effectively converted these notes from fixed rate debt to floating rate debt. We designated these contracts as fair value hedges because they hedged 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 were 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. In May 2020, we settled all outstanding interest rate swaps and received $22.0 million from the counterparties. This gain on the settlement of the interest rate swaps was recorded as an adjustment to the carrying value of the 2025 Notes and is being amortized over the remaining term of those notes as an adjustment to interest expense in the Consolidated Statement of Operations. The pre-tax amount of net gains recognized within the Consolidated Statement of Operations related to derivative instruments designated as fair value hedges, which fully offset the related net gains and losses on the hedged debt instruments during the periods presented, was (in millions): 2021 2020 2019 Interest income $ — $ 15.1 $ 30.9 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 Consolidated Statement of Operations in each period, based on the change in the fair value of the derivative financial instruments. At September 30, 2021, we had a U.S. dollar-equivalent gross notional amount of $1,011.5 million of foreign currency forward exchange contracts not designated as hedging instruments. The pre-tax amount of gains (losses) from forward exchange contracts not designated as hedging instruments recognized in the Consolidated Statement of Operations was (in millions): 2021 2020 2019 Cost of sales $ (0.2) $ 6.1 $ (0.4) Other (expense) income (8.1) (11.8) 1.6 Total $ (8.3) $ (5.7) $ 1.2 Fair Value of Derivative Instruments 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 inputs including forward and spot prices for currency and interest rate curves. We did not change our valuation techniques during fiscal 2021, 2020 or 2019. 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 curre ncies of major industrial countries. The U.S. dollar-equivalent gross notional amount of our forward exchange contracts totaled $1,811.7 million at September 30, 2021. Currency pairs (buy/sell) comprising the most significant contract notional values were Euro/United States dollar (USD), USD/Canadian dollar, USD/Mexican peso, and USD/Swiss franc. The fair value of our derivatives and their location in our Consolidated Balance Sheet were (in millions): Fair Value (Level 2) Derivatives Designated as Hedging Instruments Balance Sheet Location September 30, 2021 September 30, 2020 Forward exchange contracts Other current assets $ 7.6 $ 6.9 Forward exchange contracts Other assets 2.1 1.0 Forward exchange contracts Other current liabilities (7.4) (13.4) Forward exchange contracts Other liabilities (0.2) (3.2) Total $ 2.1 $ (8.7) Fair Value (Level 2) Derivatives Not Designated as Hedging Instruments Balance Sheet Location September 30, 2021 September 30, 2020 Forward exchange contracts Other current assets $ 4.4 $ 6.1 Forward exchange contracts Other current liabilities (9.5) (10.9) Total $ (5.1) $ (4.8) Refer to Note 1 for further information regarding levels in the fair value hierarchy.

Shareowners' Equity

Shareowners' Equity	12 Months Ended
	Sep. 30, 2021
Equity [Abstract]
Shareowners' Equity	Shareowners’ Equity Common Stock At September 30, 2021, the authorized stock of the Company consisted of one billion shares of common stock, par value $1.00 per share, and 25 million shares of preferred stock, without par value. At September 30, 2021, 16.0 million shares of authorized common stock were reserved for various incentive plans. Changes in outstanding common shares are summarized as follows (in millions): 2021 2020 2019 Beginning balance 116.2 115.7 121.0 Treasury stock purchases (1.1) (1.4) (6.1) Common stock issued (including share based compensation impact) 0.9 1.9 0.8 Ending balance 116.0 116.2 115.7 At September 30, 2021, there were $1.8 million of outstanding common stock share repurchases recorded in accounts payable. At September 30, 2020, there were no outstanding common stock share repurchases recorded in accounts payable. Accumulated Other Comprehensive Loss Changes in accumulated other comprehensive loss attributable to Rockwell Automation by component were (in millions): Pension and other postretirement benefit plan adjustments, net of tax (Note 14) Accumulated currency translation adjustments, net of tax Net unrealized gains (losses) on cash flow hedges, net of tax Net unrealized gains (losses) on available-for-sale investments, net of tax Total accumulated other comprehensive loss, net of tax Balance as of September 30, 2018 $ (658.1) $ (286.0) $ 4.4 $ (2.2) $ (941.9) Other comprehensive income (loss) before reclassifications (532.1) (55.3) (5.3) 2.2 (590.5) Amounts reclassified from accumulated other comprehensive loss 56.5 — (12.1) — 44.4 Other comprehensive income (loss) (475.6) (55.3) (17.4) 2.2 (546.1) Balance as of September 30, 2019 $ (1,133.7) $ (341.3) $ (13.0) $ — $ (1,488.0) Other comprehensive income (loss) before reclassifications (100.2) 26.0 (7.3) — (81.5) Amounts reclassified from accumulated other comprehensive loss 109.5 — (11.2) — 98.3 Other comprehensive income (loss) 9.3 26.0 (18.5) — 16.8 Adoption of accounting standard/other (146.8) 3.8 — — (143.0) Balance as of September 30, 2020 $ (1,271.2) $ (311.5) $ (31.5) $ — $ (1,614.2) Other comprehensive income (loss) before reclassifications 438.9 31.4 (29.2) — 441.1 Amounts reclassified from accumulated other comprehensive loss 138.2 — 17.8 — 156.0 Other comprehensive income (loss) 577.1 31.4 (11.4) — 597.1 Balance as of September 30, 2021 $ (694.1) $ (280.1) $ (42.9) $ — $ (1,017.1) The reclassifications out of accumulated other comprehensive loss to the Consolidated Statement of Operations were (in millions): Year Ended September 30, Affected Line in the Consolidated Statement of Operations 2021 2020 2019 Pension and other postretirement benefit plan adjustments (1) : Amortization of prior service credit $ (4.0) $ (4.5) $ (4.2) Other income (expense) Amortization of net actuarial loss 142.5 148.7 78.7 Other income (expense) Settlements 39.8 — 1.2 Other income (expense) 178.3 144.2 75.7 Income before income taxes (40.1) (34.7) (19.2) Income tax provision $ 138.2 $ 109.5 $ 56.5 Net income Net unrealized losses (gains) on cash flow hedges: Forward exchange contracts $ (1.9) $ 0.7 $ (1.0) Sales Forward exchange contracts 25.4 (19.6) (18.2) Cost of sales Forward exchange contracts (1.5) 1.4 1.3 Selling, general and administrative expenses Treasury locks related to 2019 and 2021 debt issuances 2.3 2.1 1.2 Interest expense 24.3 (15.4) (16.7) Income before income taxes (6.5) 4.2 4.6 Income tax provision $ 17.8 $ (11.2) $ (12.1) Net income Total reclassifications $ 156.0 $ 98.3 $ 44.4 Net income (1) These components are included in the computation of net periodic benefit costs. See Note 14 for further information.

Share-Based Compensation

Share-Based Compensation	12 Months Ended
	Sep. 30, 2021
Share-based Payment Arrangement [Abstract]
Share-Based Compensation	Share-Based Compensation During 2021, 2020, and 2019, we recognized $51.7 million, $46.1 million and $43.1 million of pre-tax share-based compensation expense, respectively. The total income tax benefit related to share-based compensation expense was $8.6 million, $7.7 million, and $6.9 million during 2021, 2020, and 2019, respectively. We recognize compensation expense on grants of share-based compensation awards on a straight-line basis over the service period of each award recipient. As of September 30, 2021, total unrecognized compensation cost related to share-based compensation awards was $69.0 million, net of estimated forfeitures, which we expect to recognize over a weighted average period of approximately 2.0 years. During 2020, we adopted, and our shareowners approved, our 2020 Long-Term Incentives Plan (“2020 Plan”), which replaced our 2012 Long-Term Incentives Plan, as amended (“2012 Plan”) and our 2003 Directors Stock Plan, as amended (“Directors Plan”). Our 2020 Plan authorizes us to deliver up to 13.0 million shares of our common stock upon exercise of stock options, upon grant, or in payment of stock appreciation rights, performance shares, performance units, restricted stock units or restricted stock. Our Directors Plan authorized us to deliver up to 0.5 million shares of our common stock upon exercise of stock options, upon grant, or in payment of restricted stock units. Shares relating to awards under our 2012 Plan that terminate by expiration, forfeiture, cancellation or otherwise without the issuance or delivery of shares or that are settled in cash in lieu of shares will be available for further awards under the 2020 Plan. Approximately 11.4 million shares under our 2020 Plan remain available for future grant or payment at September 30, 2021. We use treasury stock to deliver shares of our common stock under these plans. Our 2020 Plan does not permit share-based compensation awards to be granted after February 4, 2030. Stock Options We have granted non-qualified and incentive stock options to purchase our common stock under various incentive plans at prices equal to the fair market value of the stock on the grant dates. The exercise price for stock options granted under the plans may be paid in cash, already-owned shares of common stock, or a combination of cash and such shares. Stock options expire ten years after the grant date and vest ratably over three years. The per-share weighted average fair value of stock options granted during the years ended September 30, 2021, 2020, and 2019, was $55.50, $35.80, and $32.46, respectively. The total intrinsic value of stock options exercised was $108.4 million , $151.6 million, and $35.8 million during 2021, 2020, and 2019, respectively. We estimated the fair value of each stock option on the date of grant using the Black-Scholes pricing model and the following assumptions: 2021 2020 2019 Average risk-free interest rate 0.38 % 1.63 % 2.79 % Expected dividend yield 1.73 % 2.08 % 2.27 % Expected volatility 31 % 24 % 23 % Expected term (years) 4.9 4.9 5.0 The average risk-free interest rate is based on U.S. Treasury security rates corresponding to the expected term in effect as of the grant date. The expected dividend yield is based on the expected annual dividend as a percentage of the market value of our common stock as of the grant date. We determined expected volatility using daily historical volatility of our stock price over the most recent period corresponding to the expected term as of the grant date. We determined the expected term of the stock options using historical data adjusted for the estimated exercise dates of unexercised options. A summary of stock option activity for the year ended September 30, 2021, is as follows: Shares Wtd. Avg. Wtd. Avg. Aggregate Outstanding at October 1, 2020 3,404 $ 164.81 Granted 196 246.87 Exercised (985) 156.98 Forfeited (118) 191.64 Canceled (1) 191.15 Outstanding at September 30, 2021 2,496 173.07 6.6 $ 302.0 Exercisable at September 30, 2021 1,470 155.05 5.6 204.3 The amount of options expected to vest is materially consistent with those outstanding and not yet exercisable. Performance Share Awards Certain officers and key employees are also eligible to receive shares of our common stock in payment of performance share awards granted to them. Grantees of performance shares will be eligible to receive shares of our common stock depending upon our total shareowner return, assuming reinvestment of all dividends, relative to the performance of companies in the S&P 500 Index over a three-year period for the awards granted in fiscal 2020 and 2019. The number of shares actually earned for awards granted in fiscal 2020 and 2019 will range from zero percent to 200 percent of the targeted number of performance shares for the three-year performance periods and will be paid, to the extent earned, in the fiscal quarter following the end of the applicable three-year performance period. Beginning with the awards granted in fiscal 2021, the total shareowner return is measured relative to the performance of companies in the following S&P 500 Selected GICS groups: Capital Goods, Software and Services, and Technology Hardware and Equipment. The number of shares actually earned for awards granted in fiscal 2021 will range from 50 percent to 200 percent of the targeted number of performance shares for the three-year performance periods and will be paid, to the extent earned, in the fiscal quarter following the end of the applicable three-year performance period. A summary of performance share activity for the year ended September 30, 2021, is as follows: Performance Wtd. Avg. Outstanding at October 1, 2020 124 $ 204.92 Granted (1) 44 298.10 Adjustment for performance results achieved (2) (2) 219.04 Vested and issued (31) 219.04 Forfeited (16) 217.93 Outstanding at September 30, 2021 119 232.94 (1) Performance shares granted assuming achievement of performance goals at target. (2) Adjustments were due to the number of shares vested under fiscal 2018 awards at the end of the three-year performance period ended September 30, 2020, being lower than the target number of shares. The following table summarizes information about performance shares vested during the years ended September 30, 2021, 2020, and 2019: 2021 2020 2019 Percent payout 93 % 77 % 200 % Shares vested (in thousands) 31 28 145 Total fair value of shares vested (in millions) $ 7.4 $ 5.6 $ 25.8 For the three-year performance period ending September 30, 2021, the payout will be 144% of the target number of shares, with a maximum of approximately 68,000 shares to be delivered in payment under the awards in December 2021. The per-share fair value of performance share awards granted during the years ended September 30, 2021, 2020, and 2019, was $298.10, $265.04 and $155.04, respectively, which we determined using a Monte Carlo simulation and the following assumptions: 2021 2020 2019 Average risk-free interest rate 0.19 % 1.58 % 2.77 % Expected dividend yield 1.73 % 2.06 % 2.24 % Expected volatility 37 % 25 % 23 % The average risk-free interest rate is based on the three-year U.S. Treasury security rate in effect as of the grant date. The expected dividend yield is based on the expected annual dividend as a percentage of the market value of our common stock as of the grant date. The expected volatilities were determined using daily historical volatility for the most recent three-year period as of the grant date. Restricted Stock and Restricted Stock Units We grant restricted stock and restricted stock units to certain employees, and non-employee directors may elect to receive a portion of their compensation in restricted stock units. Restrictions on employee restricted stock and employee restricted stock units generally lapse over periods ranging from one A summary of restricted stock and restricted stock unit activity for the year ended September 30, 2021, is as follows: Restricted Wtd. Avg. Outstanding at October 1, 2020 163 $ 182.66 Granted 254 265.32 Vested (42) 188.87 Forfeited (24) 205.15 Outstanding at September 30, 2021 351 $ 239.89 We also granted approximately 5,600 shares of unrestricted common stock to non-employee directors during the year ended September 30, 2021. The weighted average grant date fair value of the unrestricted stock awards granted during the years ended September 30, 2021, 2020, and 2019, was $228.80, $171.51 and $182.39, respectively.

Retirement Benefits

Retirement Benefits	12 Months Ended
	Sep. 30, 2021
Retirement Benefits [Abstract]
Retirement Benefits	Retirement Benefits We sponsor funded and unfunded pension plans and other postretirement benefit plans for our employees. The pension plans provide for monthly pension payments to eligible employees after retirement. Pension benefits for salaried employees generally are based on years of credited service and average earnings. Pension benefits for hourly employees are primarily based on specified benefit amounts and years of service. Effective July 1, 2010, we closed participation in our U.S. and Canada pension plans to employees hired after June 30, 2010. Employees hired after June 30, 2010 are instead eligible to participate in defined contribution plans. Effective October 1, 2010, we also closed participation in our U.K. pension plan to employees hired after September 30, 2010 and these employees are now eligible for a defined contribution plan. Benefits to be provided to plan participants hired before July 1, 2010 or October 1, 2010, respectively, are not affected by these changes. Our policy with respect to funding our pension obligations is to fund at a minimum the amount required by applicable laws and governmental regulations. We were not required to make contributions to satisfy minimum funding requirements in our U.S. pension plans in 2021, 2020 or 2019. We did not make voluntary contributions to our U.S. qualified pension plan in 2021 and 2019. We made a voluntary contribution of $50.0 million to our U.S. qualified pension plan in 2020. We sponsor various defined contribution savings plans that allow eligible employees to contribute a portion of their income in accordance with plan specific guidelines. We contribute to savings plans and/or will match a percentage of the employee contributions up to certain limits. The Company contributions to defined contribution plans are based on age and years of service and range from 3% to 7% of eligible compensation. However, effective from May 2020 through November 2020, we temporarily suspended the 401(k) matching contribution for all U.S. employees to address the then-current and anticipated economic conditions resulting from the global COVID-19 pandemic. Expense related to these plans was $58.5 million in 2021, $50.9 million in 2020, and $53.1 million in 2019. Other postretirement benefits are primarily in the form of retirement medical plans that cover certain employees in the U.S. and Canada and provide for the payment of certain medical costs of eligible employees and dependents after retirement. The postretirement benefit plan was closed to employees hired after December 31, 2004. Net Periodic Benefit Cost The components of net periodic benefit cost (income) are (in millions): Pension Benefits Other Postretirement Benefits 2021 2020 2019 2021 2020 2019 Service cost $ 90.1 $ 91.1 $ 78.2 $ 1.2 $ 1.0 $ 0.9 Interest cost 125.6 136.4 158.3 1.2 1.6 2.3 Expected return on plan assets (241.3) (244.8) (244.7) — — — Amortization: Prior service cost (credit) 1.4 0.9 1.2 (5.4) (5.4) (5.4) Net actuarial loss 141.4 147.3 77.8 1.1 1.4 0.9 Settlements 39.8 — 1.2 — — — Net periodic benefit cost (income) $ 157.0 $ 130.9 $ 72.0 $ (1.9) $ (1.4) $ (1.3) The service cost component is included in Cost of sales and Selling, general and administrative expenses in the Consolidated Statement of Operations. All other components are included in Other income (expense) in the Consolidated Statement of Operations. Significant assumptions used in determining net periodic benefit cost (income) are (in weighted averages): Pension Benefits Other Postretirement Benefits 2021 2020 2019 2021 2020 2019 U.S. Plans Discount rate 2.90 % 3.30 % 4.35 % 2.15 % 2.90 % 4.15 % Expected return on plan assets 7.25 % 7.50 % 7.50 % — — — Compensation increase rate 3.40 % 3.40 % 3.50 % — — — Non-U.S. Plans Discount rate 1.56 % 1.60 % 2.48 % 2.20 % 2.65 % 3.30 % Expected return on plan assets 4.68 % 5.11 % 5.22 % — — — Compensation increase rate 2.90 % 3.06 % 3.02 % — — — Net Benefit Obligation Benefit obligation, plan assets, funded status and net liability information is summarized as follows (in millions): Pension Benefits Other Postretirement Benefits 2021 2020 2021 2020 Benefit obligation at beginning of year $ 5,026.9 $ 4,907.3 $ 57.0 $ 60.7 Service cost 90.1 91.1 1.2 1.0 Interest cost 125.6 136.4 1.2 1.6 Actuarial (gains) losses (162.6) 154.1 (4.9) (1.4) Acquisitions — (0.6) — — Plan amendments 0.1 — — — Plan participant contributions 2.8 3.1 3.1 3.0 Benefits paid (156.9) (285.0) (8.8) (7.8) Settlements (219.3) (10.5) — — Currency translation and other 45.1 31.0 2.7 (0.1) Benefit obligation at end of year 4,751.8 5,026.9 51.5 57.0 Plan assets at beginning of year 3,838.0 3,753.1 — — Actual return on plan assets 653.7 266.0 — — Company contributions 34.9 84.1 5.7 4.8 Plan participant contributions 2.8 3.1 3.1 3.0 Benefits paid (156.9) (285.0) (8.8) (7.8) Settlements (219.3) (10.5) — — Currency translation and other 39.0 27.2 — — Plan assets at end of year 4,192.2 3,838.0 — — Funded status of plans $ (559.6) $ (1,188.9) $ (51.5) $ (57.0) Net amount on balance sheet consists of: Other assets $ 118.5 $ 27.9 $ — $ — Compensation and benefits (37.0) (13.9) (5.7) (5.8) Retirement benefits (641.1) (1,202.9) (45.8) (51.2) Net amount on balance sheet $ (559.6) $ (1,188.9) $ (51.5) $ (57.0) The actuarial gains recorded within the benefit obligation in 2021 were primarily the result of an increase in the discount rate for the U.S. Plans, which increased from 2.90% in 2020 to 3.10% in 2021. The actuarial losses recorded in 2020 were primarily the result of a decrease in the discount rate for the U.S. Plans, which decreased from 3.30% in 2019 to 2.90% in 2020. Approximately 75 percent of our 2021 global projected benefit obligation relates to our U.S. pension plan. Amounts included in accumulated other comprehensive loss, net of tax, which have not yet been recognized in net periodic benefit cost are as follows (in millions): Pension Benefits Other Postretirement Benefits 2021 2020 2021 2020 Prior service (credit) cost $ (30.7) $ 3.3 $ 4.1 $ — Net actuarial loss 718.7 1,262.1 2.0 5.8 Total $ 688.0 $ 1,265.4 $ 6.1 $ 5.8 During 2021, we recognized prior service credits of $35.8 million ($29.9 million net of tax) and net actuarial losses of $142.5 million ($108.3 million net of tax) in pension and other postretirement net periodic benefit cost, which were included in accumulated other comprehensive loss at September 30, 2020. The accumulated benefit obligation for our pension plans was $4,393.0 million and $4,638.1 million at September 30, 2021 and 2020, respectively. Information regarding our pension plans with projected benefit obligations in excess of the fair value of plan assets (underfunded plans) are as follows (in millions): 2021 2020 Projected benefit obligation $ 4,210.5 $ 4,482.0 Fair value of plan assets 3,532.4 3,265.2 Information regarding our pension plans with accumulated benefit obligations in excess of the fair value of plan assets (underfunded plans) are as follows (in millions): 2021 2020 Accumulated benefit obligation $ 3,510.7 $ 4,113.4 Fair value of plan assets 3,156.7 3,265.2 Significant assumptions used in determining the benefit obligations are (in weighted averages): Pension Benefits Other Postretirement Benefits 2021 2020 2021 2020 U.S. Plans Discount rate 3.10 % 2.90 % 2.50 % 2.15 % Compensation increase rate 3.40 % 3.40 % — — Health care cost trend rate (1) — — 6.00 % 6.25 % Non-U.S. Plans Discount rate 2.03 % 1.56 % 2.90 % 2.20 % Compensation increase rate 3.00 % 2.90 % — — Health care cost trend rate (1) — — 4.50 % 4.50 % (1) The health care cost trend rate reflects the estimated increase in gross medical claims costs. As a result of the plan amendment adopted effective October 1, 2002, our effective per person retiree medical cost increase is zero percent beginning in 2005 for the majority of our postretirement benefit plans. For our other plans, we assume the gross health care cost trend rate will remain at 6.00% in 2022 and decrease to 5.00% in 2025 for U.S. Plans and will not change in future periods for Non-U.S. Plans. Estimated Future Payments We expect to contribute $57.4 million related to our global pension plans and $5.8 million to our postretirement benefit plans in 2022. The following benefit payments, which include employees’ expected future service, as applicable, are expected to be paid (in millions): Pension Benefits Other 2022 $ 327.5 $ 5.8 2023 284.4 5.5 2024 289.0 5.1 2025 288.8 4.8 2026 289.9 4.5 2027-2031 1,420.8 17.4 Plan Assets In determining the expected long-term rate of return on assets assumption, we consider actual returns on plan assets over the long term, adjusted for forward-looking considerations, such as inflation, interest rates, equity performance and the active management of the plan’s invested assets. We also considered our current and expected mix of plan assets in setting this assumption. This resulted in the selection of the weighted average long-term rate of return on assets assumption. Our global weighted-average targeted and actual asset allocations at September 30, by asset category, are: Allocation Target September 30, Asset Category Range Allocations 2021 2020 Equity securities 40% – 65% 50% 56% 50% Debt securities 30% – 50% 43% 38% 43% Other 0% – 15% 7% 6% 7% The investment objective for pension funds related to our defined benefit plans is to meet the plan’s benefit obligations, while maximizing the long-term growth of assets without undue risk. We strive to achieve this objective by investing plan assets within target allocation ranges and diversification within asset categories. Target allocation ranges are guidelines that are adjusted periodically based on ongoing monitoring by plan fiduciaries. Investment risk is controlled by rebalancing to target allocations on a periodic basis and ongoing monitoring of investment manager performance relative to the investment guidelines established for each manager. As of September 30, 2021 and 2020, our pension plans do not directly own our common stock. In certain countries where we operate, there are no legal requirements or financial incentives provided to companies to pre-fund pension obligations. In these instances, we typically make benefit payments directly from cash as they become due, rather than by creating a separate pension fund. The valuation methodologies used for our pension plans’ investments measured at fair value are described as follows. There have been no changes in the methodologies used at September 30, 2021 and 2020. Common stock — Valued at the closing price reported on the active market on which the individual securities are traded. Mutual funds — Valued at the net asset value (NAV) reported by the fund. Corporate debt — Valued at either the yields currently available on comparable securities of issuers with similar credit ratings or valued under a discounted cash flow approach that maximizes observable inputs, such as current yields of similar instruments, but includes adjustments for certain risks that may not be observable such as credit and liquidity risks. Government securities — Valued at the most recent closing price on the active market on which the individual securities are traded or, absent an active market, utilizing observable inputs such as closing prices in less frequently traded markets. Common collective trusts — Valued at the NAV as determined by the custodian of the fund. The NAV is based on the fair value of the underlying assets owned by the fund, minus its liabilities then divided by the number of units outstanding. Private equity and alternative equity — Valued at the estimated fair value, as determined by the respective fund manager, based on the NAV of the investment units held at year end, which is subject to judgment. Real estate funds — Consists of the real estate funds, which provide an indirect investment into a diversified and multi-sector portfolio of property assets. Publicly-traded real estate funds are valued at the most recent closing price reported on the SIX Swiss Exchange. The remainder is valued at the estimated fair value, as determined by the respective fund manager, based on the NAV of the investment units held at year end, which is subject to judgment. Insurance contracts — Valued at the aggregate amount of accumulated contribution and investment income less amounts used to make benefit payments and administrative expenses which approximates fair value. Other — Consists of other fixed income investments and common collective trusts with a mix of equity and fixed income underlying assets. Other fixed income investments are valued at the most recent closing price reported in the markets in which the individual securities are traded, which may be infrequently. Refer to Note 1 for further information regarding levels in the fair value hierarchy. In accordance with ASC Subtopic 820-10, certain investments that are measured at fair value using the NAV (or its equivalent) practical expedient have not been classified in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the line items presented in the consolidated financial statements. The following table presents our pension plans’ investments measured at fair value as of September 30, 2021: Level 1 Level 2 Level 3 Total U.S. Plans Cash and cash equivalents $ 3.5 $ — $ — $ 3.5 Equity securities: Mutual funds 88.7 — — 88.7 Common stock 1,159.8 — — 1,159.8 Common collective trusts — 609.2 — 609.2 Fixed income securities: Corporate debt — 678.2 — 678.2 Government securities 290.5 66.5 — 357.0 Common collective trusts — 119.7 — 119.7 Other types of investments: Insurance contracts — — 0.9 0.9 Total U.S. Plans investments in fair value hierarchy $ 1,542.5 $ 1,473.6 $ 0.9 3,017.0 U.S. Plans investments measured at NAV: Private equity 30.3 Alternative equity — Total U.S. Plans investments 3,047.3 Non-U.S. Plans Cash and cash equivalents $ 8.5 $ — $ — 8.5 Equity securities: Common stock 170.3 — — 170.3 Common collective trusts — 334.9 — 334.9 Fixed income securities: Corporate debt — 64.7 — 64.7 Government securities 1.4 — — 1.4 Common collective trusts — 357.0 — 357 Other types of investments: Real estate funds — 81.1 — 81.1 Insurance contracts — — 106.2 106.2 Other — — 4.7 4.7 Total Non-U.S. Plans investments in fair value hierarchy $ 180.2 $ 837.7 $ 110.9 1,128.8 Non-U.S. Plans investments measured at NAV: Real estate funds 16.1 Total Non-U.S. Plans investments 1,144.9 Total investments measured at fair value $ 4,192.2 The following table presents our pension plans’ investments measured at fair value as of September 30, 2020: Level 1 Level 2 Level 3 Total U.S. Plans Cash and cash equivalents $ 1.4 $ — $ — $ 1.4 Equity securities: Mutual funds 112.4 — — 112.4 Common stock 947.7 — — 947.7 Common collective trusts — 467.4 — 467.4 Fixed income securities: Corporate debt — 699.3 — 699.3 Government securities 244.7 133.1 — 377.8 Common collective trusts — 169.0 — 169.0 Other types of investments: Insurance contracts — — 0.9 0.9 Total U.S. Plans investments in fair value hierarchy $ 1,306.2 $ 1,468.8 $ 0.9 2,775.9 U.S. Plans investments measured at NAV: Private equity 23.5 Alternative equity 18.4 Total U.S. Plans investments 2,817.8 Non-U.S. Plans Cash and cash equivalents $ 1.9 $ — $ — 1.9 Equity securities: Common stock 62.4 — — 62.4 Common collective trusts — 329.3 — 329.3 Fixed income securities: Corporate debt — 65.6 — 65.6 Government securities 1.1 — — 1.1 Common collective trusts — 350.9 — 350.9 Other types of investments: Real estate funds — 78.9 — 78.9 Insurance contracts — — 110.2 110.2 Other — — 4.6 4.6 Total Non-U.S. Plans investments in fair value hierarchy $ 65.4 $ 824.7 $ 114.8 1,004.9 Non-U.S. Plans investments measured at NAV: Real estate funds 15.3 Total Non-U.S. Plans investments 1,020.2 Total investments measured at fair value $ 3,838.0 The table below sets forth a summary of changes in fair market value of our pension plans’ Level 3 assets for the year ended September 30, 2021: Balance Realized Gains (Losses) Unrealized Gains (Losses) Purchases, Sales, Issuances, and Settlements, Net Balance September 30, 2021 U.S. Plans Insurance contracts $ 0.9 $ — $ — $ — $ 0.9 Non-U.S. Plans Insurance contracts 110.2 — (5.7) 1.7 106.2 Other 4.6 — 0.1 — 4.7 $ 115.7 $ — $ (5.6) $ 1.7 $ 111.8 The table below sets forth a summary of changes in fair market value of our pension plans’ Level 3 assets for the year ended September 30, 2020: Balance Realized Gains (Losses) Unrealized Gains (Losses) Purchases, Sales, Issuances, and Settlements, Net Balance September 30, 2020 U.S. Plans Insurance contracts $ 0.9 $ — $ — $ — $ 0.9 Non-U.S. Plans Insurance contracts 95.4 — 13.0 1.8 110.2 Other 4.5 — 0.1 — 4.6 $ 100.8 $ — $ 13.1 $ 1.8 $ 115.7

Other Income (Expense)

Other Income (Expense)	12 Months Ended
	Sep. 30, 2021
Other Income and Expenses [Abstract]
Other Income (Expense)	Other Income (Expense) The components of other income (expense) are (in millions): 2021 2020 2019 Interest income $ 1.6 $ 5.5 $ 11.1 Royalty income 10.2 8.9 10.2 Legacy product liability and environmental charges (10.6) (14.5) (22.1) Non-operating pension and postretirement benefit (cost) credit (63.8) (37.4) 8.4 Legal Settlement (Note 17) 70.0 — — Other (1.7) 7.8 (1.5) Other income (expense) $ 5.7 $ (29.7) $ 6.1

Income Taxes

Income Taxes	12 Months Ended
	Sep. 30, 2021
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Selected income tax data (in millions): 2021 2020 2019 Components of income before income taxes: United States $ 885.1 $ 556.2 $ 280.8 Non-United States 641.1 579.9 620.2 Total $ 1,526.2 $ 1,136.1 $ 901.0 Components of the income tax provision: Current: United States $ 149.6 $ 68.1 $ 105.6 Non-United States 190.7 96.6 112.1 State and local 25.7 13.9 16.5 Total current 366.0 178.6 234.2 Deferred: United States (154.7) (32.8) (27.0) Non-United States (19.0) (24.7) (0.1) State and local (10.4) (8.2) (1.9) Total deferred (184.1) (65.7) (29.0) Income tax provision $ 181.9 $ 112.9 $ 205.2 Total income taxes paid $ 329.3 $ 187.9 $ 293.3 Effective Tax Rate Reconciliation The reconciliation between the U.S. federal statutory rate and our effective tax rate was: 2021 2020 2019 Statutory tax rate 21.0 % 21.0 % 21.0 % State and local income taxes 1.4 0.8 0.1 Non-United States taxes (3.8) (5.0) (4.8) Repatriation of foreign earnings 0.9 1.3 2.8 Foreign-derived intangible income (2.8) (1.0) (1.6) Settlements with taxing authorities (1.0) (0.2) — Sensia formation 0.1 (1.1) — Change in valuation allowance (a) (1.7) (2.7) 7.6 Share-based compensation (1.1) (1.9) (0.9) Research and development tax credit (0.6) (1.1) (1.2) Other (0.5) (0.2) (0.2) Effective income tax rate 11.9 % 9.9 % 22.8 % (a) During fiscal year 2021, we reversed our valuation allowance against deferred tax assets associated with the change in fair value of the PTC Shares. This resulted in a decrease to the effective tax rate of 1.7% and no remaining valuation allowance related to PTC Shares, as described further in the table below. We operate in certain non-U.S. tax jurisdictions under government-sponsored tax incentive programs, which may be extended if certain additional requirements are met. The program which generates the primary benefit has been extended to expire in 2032. The tax benefit attributable to these programs was $61.2 million ($0.52 per diluted share) in 2021, $59.1 million ($0.51 per diluted share) in 2020 and $55.1 million ($0.46 per diluted share) in 2019. Deferred Taxes The tax effects of temporary differences that give rise to our net deferred income tax assets (liabilities) were (in millions): 2021 2020 Deferred income tax assets: Compensation and benefits $ 41.7 $ 6.0 Inventory 12.8 10.5 Returns, rebates and incentives 37.5 34.5 Retirement benefits 153.1 306.8 Environmental remediation and other site-related costs 22.8 23.8 Share-based compensation 18.5 18.6 Other accruals and reserves 250.2 68.4 Investments — 31.6 Net operating loss carryforwards 130.4 31.1 Tax credit carryforwards 20.3 17.3 Capital loss carryforwards 15.3 10.8 Other 23.7 16.8 Subtotal 726.3 576.2 Valuation allowance (32.6) (58.0) Net deferred income tax assets 693.7 518.2 Deferred income tax liabilities: Property (43.7) (48.0) Intangible assets (160.5) (25.3) Investments (64.3) — Unremitted earnings of foreign subsidiaries (42.0) (28.3) Other (2.3) (1.0) Deferred income tax liabilities (312.8) (102.6) Total net deferred income tax assets $ 380.9 $ 415.6 We believe it is more likely than not that we will realize our deferred tax assets through the reduction of future taxable income, other than for the deferred tax assets reflected below. Tax attributes and related valuation allowances at September 30, 2021 were (in millions): Tax attributes and related valuation allowances Tax Benefit Amount Valuation Allowance Carryforward Non-United States net operating loss carryforward $ 6.6 $ 6.2 2022 - 9/30/2030 Non-United States net operating loss carryforward 36.5 3.2 Indefinite Non-United States capital loss carryforward 15.3 15.3 Indefinite United States credit carryforward 9.4 1.2 2030 - 2041 United States net operating loss carryforward 19.4 — 2022 - 2037 United States net operating loss carryforward 50.7 — Indefinite State and local net operating loss carryforward 17.2 1.2 2022 - 2038 State tax credit carryforward 10.9 — 2022 - 2035 Subtotal 166.0 27.1 Other deferred tax assets 5.5 5.5 Indefinite Total $ 171.5 $ 32.6 Unrecognized Tax Benefits A reconciliation of our gross unrecognized tax benefits, excluding interest and penalties, is as follows (in millions): 2021 2020 2019 Gross unrecognized tax benefits balance at beginning of year $ 25.5 $ 19.9 $ 20.1 Additions based on tax positions related to the current year 0.1 — — Additions based on tax positions related to prior years 0.4 5.6 — Reductions based on tax positions related to prior years — — — Reductions related to settlements with taxing authorities (18.1) — — Reductions related to lapses of statute of limitations (3.6) — (0.2) Effect of foreign currency translation — — — Gross unrecognized tax benefits balance at end of year $ 4.3 $ 25.5 $ 19.9 The amount of gross unrecognized tax benefits that would reduce our effective tax rate if recognized was $4.3 million, $25.5 million and $19.9 million at September 30, 2021, 2020 and 2019, respectively. Accrued interest and penalties related to unrecognized tax benefits were $1.5 million and $4.0 million at September 30, 2021 and 2020, respectively. We recognize interest and penalties related to unrecognized tax benefits in the income tax provision. Benefits (expense) recognized were $2.5 million, ($0.7) million and ($0.8) million in 2021, 2020 and 2019, respectively. We believe it is reasonably possible that the amount of gross unrecognized tax benefits could be reduced by up to $4.2 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 $5.7 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 2018 and are no longer subject to state, local and non-U.S. income tax examinations for years before 2014. Income tax liabilities of $264.8 million and $296.0 million related to the U.S. transition tax under the Tax Act that are payable greater than 12 months from September 30, 2021, and 2020, respectively, are recorded in other liabilities in the Consolidated Balance Sheet.

Commitments and Contingent Liab

Commitments and Contingent Liabilities	12 Months Ended
	Sep. 30, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingent Liabilities	Commitments and Contingent Liabilities Environmental Matters Federal, state and local requirements relating to the discharge of substances into the environment, the disposal of hazardous wastes and other activities affecting the environment have and will continue to have an effect on our manufacturing operations. Thus far, compliance with environmental requirements and resolution of environmental claims have been accomplished without material effect on our business, financial condition or results of operations. We have been designated as a potentially responsible party at 14 Superfund sites, excluding sites as to which our records disclose no involvement or as to which our potential liability has been finally determined and assumed by third parties. In addition, various other lawsuits, claims and proceedings have been asserted against us seeking remediation of alleged environmental impairments, principally at previously owned properties. Based on our assessment, we believe that our expenditures for environmental capital investment and remediation necessary to comply with present regulations governing environmental protection and other expenditures for the resolution of environmental claims will not have a material effect on our business, financial condition or results of operations. We cannot assess the possible effect of compliance with future requirements. Environmental remediation cost liabilities, net of related expected recoveries, were $53.6 million and $59.2 million as of September 30, 2021 and 2020, respectively. Conditional Asset Retirement Obligations We accrue for costs related to a legal obligation associated with the retirement of a tangible long-lived asset that results from the acquisition, construction, development or the normal operation of the long-lived asset. The obligation to perform the asset retirement activity is not conditional even though the timing or method may be conditional. Identified conditional asset retirement obligations include asbestos abatement and remediation of soil contamination beneath current and previously divested facilities. We estimate conditional asset retirement obligations using site-specific knowledge and historical industry expertise. There have been no significant changes in liabilities incurred, liabilities settled, accretion expense or revisions in estimated cash flows for the periods ended September 30, 2021 and 2020. Conditional asset retirement obligations, net of related expected recoveries, were $23.6 million and $22.8 million as of September 30, 2021 and 2020, respectively. Other Matters Various other 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. The following outlines additional background for obligations associated with asbestos, divested businesses and intellectual property. 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, including products from divested businesses for which we have agreed to defend and indemnify claims. Currently there are a few thousand claimants in lawsuits that name us as defendants, together with hundreds of other companies. 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. Additionally, we have maintained insurance coverage that includes indemnity and defense costs, over and above self-insured retentions, for many of these claims. We believe these arrangements will provide substantial coverage for future defense and indemnity costs for these asbestos claims throughout the remaining life of 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 business, 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. We do not believe these liabilities will have a material effect on our business, financial condition or results of operations. In many countries we provide a limited intellectual property indemnity as part of our terms and conditions of sale and at times in other contracts with third parties. As of September 30, 2021, 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 business, financial condition or results of operations; 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 business, financial condition or results of operations in a particular period. During the first quarter of fiscal 2021, we reached a favorable settlement agreement regarding litigation of a trademark infringement and false advertising matter and received $70 million. The settlement gain is recorded in other income (expense) in the Consolidated Statement of Operations.

Leases

Leases	12 Months Ended
	Sep. 30, 2021
Leases [Abstract]
Leases	LeasesWe have operating leases primarily for real estate, vehicles and equipment. We have finance leases primarily for equipment. Our leases have remaining lease terms from less than one year to approximately 16 years. We elected the package of practical expedients permitted under the transition guidance within the new standard on accounting for leases, which allows the Company to carry forward the historical assessments of whether contracts are, or contain, leases, lease classification and initial direct costs. We also elected to not record lease ROU assets or lease liabilities for leases with an original term of 12 months or less. We elected to use the remaining lease term for purposes of calculating the incremental borrowing rate upon transition. The components of lease expense were as follows (in millions): 2021 2020 Operating lease expense (1) $ 109.8 $ 104.6 Variable lease expense (2) 15.8 15.6 Finance lease expense Amortization of right-of-use assets 1.7 1.3 Interest on lease liabilities 0.4 0.4 Total lease expense $ 127.7 $ 121.9 (1) Operating lease expense includes short-term lease expense which was not material. (2) Variable lease expense includes sublease income which was not material. Rental expense accounted for under the previous accounting standard was $119.0 million in 2019. Supplemental balance sheet information related to leases was as follows (in millions): 2021 2020 Weighted average remaining lease term: Operating leases 6.8 years 6.3 years Finance leases 4.3 years 7.8 years Weighted average discount rate: Operating leases 1.79 % 1.84 % Finance leases 3.96 % 3.50 % Maturities of lease liabilities as of September 30, 2021, were as follows (in millions): Finance Leases Operating Leases 2022 $ 5.6 $ 96.2 2023 3.5 81.3 2024 1.9 62.9 2025 1.6 45.5 2026 1.6 33.0 Thereafter 2.8 110.1 Total undiscounted lease payments $ 17.0 $ 429.0 Less imputed interest (1.5) (25.5) Total lease liabilities $ 15.5 $ 403.5 As of September 30, 2021, we have additional operating leases for facilities that have not yet commenced with undiscounted lease obligations of approximately $24 million and additional finance leases for equipment that have not yet commenced with undiscounted lease obligations of approximately $10 million. These leases will commence in fiscal 2022. Supplemental cash flow information related to leases was as follows (in millions): 2021 2020 Cash paid for amounts included in the measurement of lease liabilities Operating cash flows from operating leases $ 108.5 $ 103.6 Operating cash flows from finance leases 0.4 0.4 Financing cash flows from finance leases 1.8 1.2 Right-of-use assets obtained in exchange for lease obligations Operating leases $ 90.6 $ 131.2 Financing leases 0.9 —

Business Segment Information

Business Segment Information	12 Months Ended
	Sep. 30, 2021
Segment Reporting [Abstract]
Business Segment Information	Business Segment Information We determine our operating segments based on the information used by our chief operating decision maker, our Chief Executive Officer, to allocate resources and assess performance. Beginning in fiscal year 2021, we organize our business into three operating segments: Intelligent Devices, Software & Control, and Lifecycle Services. This change simplifies our structure around essential offerings, leverages our sharpened industry focus, and recognizes the growing importance of software in delivering value to our customers. The composition of our segments is as follows: Intelligent Devices Software & Control (1) Lifecycle Services (2) Drives (2) Control software & hardware Consulting Motion (1) Visualization software & hardware Professional services and solutions Safety (1) Digital twin & simulation software Connected services Sensing (1) Information solutions software Maintenance services Industrial components (2) Network & security infrastructure Sensia joint venture Configured-to-order products (2) (1) Formerly part of the Architecture & Software segment (2) Formerly part of the Control Products & Solutions segment Intelligent Devices The Intelligent Devices operating segment combines a comprehensive portfolio of smart products that create the foundation of an agile, resilient and sustainable production system. This comprehensive portfolio includes: • Power Control - Low and medium voltage variable frequency drives as well as low and medium voltage motor control; • Motion Control - Servo drives, rotary servo motors, linear actuators and independent cart technologies offering a comprehensive portfolio of servo control technologies; • Safety, Sensing & Industrial Components - Safety devices, sensing devices, motor control and circuit protection devices, operator devices, signaling devices, relays, and electrical control accessories; and • Micro Control & Distributed I/O - Micro programmable logic controllers and distributed input/output platforms. Software & Control The Software & Control operating segment contains a comprehensive portfolio of production automation and production operations platforms, including hardware and software. This integrated portfolio is merging information technology (IT) and operational technology (OT), bringing the benefits of the Connected Enterprise to the production system. Our production automation portfolio is multi-discipline and scalable with the ability to handle applications in discrete, batch/hybrid and continuous process, drives control, motion and robotics control, machine safety and process safety. Our products include programmable automation controllers, design, visualization and simulation software, human machine interface products, industrial computers, machine safety and process safety products, industrial networks and security products. Our production operations portfolio helps industrial clients to plan, execute, manage and optimize their production leveraging industrial data and software. Our software products include manufacturing execution systems, performance, quality, supply chain management, data management, edge, analytics and machine learning software that enables customers to improve operational productivity and meet regulatory requirements. These solutions enable enterprise visibility, reduction of unplanned downtime, and optimization of processes. Lifecycle Services The Lifecycle Services operating segment contains a complete portfolio of professionally delivered services and value-added solutions. This comprehensive portfolio combines technology and domain expertise to help maximize customers’ investment and provide total lifecycle support as they innovate, design, operate and sustain their business investments. This includes: • consulting services including safety, security and digital transformation strategy and design; • professional services including global automation and information program and project management and delivery capabilities; • connected services including operational technology/plant network, cybersecurity, cloud, predictive/prescriptive analytics, remote support and managed services; • field services including asset management, on-site support and safety; • workforce services including instructor-led and virtual training, learning and enablement; • Sensia Joint Venture which exclusively serves the oil, gas and petrochemical industry through a combination of connected products and digital automation services and solutions; and • industrial automation and information solutions and custom-engineered systems that incorporate our own and third-party hardware and software products. The following tables reflect the sales and operating results of our reportable segments including recast information for fiscal 2020 and 2019 (in millions): 2021 2020 2019 Sales: Intelligent Devices $ 3,311.9 $ 2,956.0 $ 3,279.7 Software & Control 1,947.0 1,681.3 1,790.0 Lifecycle Services 1,738.5 1,692.5 1,625.1 Total $ 6,997.4 $ 6,329.8 $ 6,694.8 Segment operating earnings: Intelligent Devices $ 702.1 $ 587.8 $ 697.0 Software & Control 531.0 473.8 531.2 Lifecycle Services 158.2 196.3 245.4 Total 1,391.3 1,257.9 1,473.6 Purchase accounting depreciation and amortization (55.1) (41.4) (16.6) Corporate and other (120.6) (98.9) (108.8) Non-operating pension and postretirement benefit (cost) credit (63.8) (37.4) 8.4 Gain (loss) on investments 397.4 153.9 (402.2) Valuation adjustments related to the registration of PTC Shares — — 33.7 Legal settlement 70.0 — — Interest (expense) income - net (93.0) (98.0) (87.1) Income before income taxes $ 1,526.2 $ 1,136.1 $ 901.0 Among other considerations, we evaluate performance and allocate resources based upon segment operating earnings before purchase accounting depreciation and amortization, corporate and other, non-operating pension and postretirement benefit (cost) credit, gains and losses on investments, the $70 million legal settlement in fiscal 2021, valuation adjustments related to the registration of the PTC Shares in fiscal 2019, interest (expense) income - net, and income tax provision. 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 consistent with the methodology used by management to assess segment performance. The following tables summarize the identifiable assets at September 30, 2021, 2020 and 2019 and the provision for depreciation and amortization and the amount of capital expenditures for property for the years then ended for each of the reportable segments and Corporate, including recast information for fiscal 2020 and 2019 (in millions): 2021 2020 2019 Identifiable assets: Intelligent Devices $ 2,143.3 $ 1,585.0 $ 1,550.0 Software & Control 4,000.4 1,072.7 872.7 Lifecycle Services 2,124.3 1,915.0 1,133.3 Corporate 2,433.6 2,692.0 2,557.0 Total $ 10,701.6 $ 7,264.7 $ 6,113.0 Depreciation and amortization: Intelligent Devices $ 48.6 $ 51.8 $ 56.0 Software & Control 49.1 40.6 42.6 Lifecycle Services 35.3 37.1 34.8 Corporate 1.7 1.8 2.2 Total 134.7 131.3 135.6 Purchase accounting depreciation and amortization 55.1 41.4 16.6 Total $ 189.8 $ 172.7 $ 152.2 Capital expenditures for property: Intelligent Devices $ 52.0 $ 51.3 $ 74.8 Software & Control 30.4 19.3 34.8 Lifecycle Services 19.6 24.9 16.7 Corporate 18.3 18.4 6.5 Total $ 120.3 $ 113.9 $ 132.8 Identifiable assets at Corporate consist principally of cash, net deferred income tax assets, prepaid pension and property. Property shared by the segments and used in operating activities is also reported in Corporate identifiable assets and Corporate capital expenditures. Corporate identifiable assets include shared net property balances of $275.8 million, $247.3 million and $230.3 million at September 30, 2021, 2020 and 2019, respectively, for which depreciation expense has been allocated to segment operating earnings based on the expected benefit to be realized by each segment. Corporate capital expenditures in 2021, 2020 and 2019 primarily consist of property that will be shared by our operating segments. We conduct a significant portion of our business activities outside the United States. The following tables present sales and property by geographic region (in millions): Sales Property 2021 2020 2019 2021 2020 2019 North America $ 4,132.8 $ 3,760.2 $ 4,014.3 $ 416.1 $ 429.4 $ 443.8 Europe, Middle East and Africa 1,405.7 1,249.3 1,249.8 91.1 81.9 60.5 Asia Pacific 1,012.2 868.7 908.6 54.8 42.8 41.9 Latin America 446.7 451.6 522.1 19.9 20.3 25.7 Total $ 6,997.4 $ 6,329.8 $ 6,694.8 $ 581.9 $ 574.4 $ 571.9 We attribute sales to the geographic regions based on the country of destination. Sales in North America include $3,740.2 million, $3,425.1 million, and $3,640.2 million related to the U.S in 2021, 2020, and 2019, respectively. In most countries, we sell primarily through independent distributors in conjunction with our direct sales force. We sell large systems and service offerings principally through our direct sales force, though opportunities are sometimes identified through distributors. Sales to our largest distributor in 2021, 2020, and 2019, which are attributable to all three segments, were approximately 10 percent of our total sales.

Valuation and Qualifying Accoun

Valuation and Qualifying Accounts	12 Months Ended
	Sep. 30, 2021
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]
Valuation and Qualifying Accounts	SCHEDULE II ROCKWELL AUTOMATION, INC. VALUATION AND QUALIFYING ACCOUNTS For the Years Ended September 30, 2021, 2020 and 2019 Additions (in millions) Balance at Beginning Charged to Charged to Deductions (b) Balance at Description Year ended September 30, 2021 Allowance for doubtful accounts (a) $ 15.2 $ 3.1 $ 0.4 $ 5.5 $ 13.2 Valuation allowance for deferred tax assets 58.0 5.4 1.5 32.3 32.6 Year ended September 30, 2020 Allowance for doubtful accounts (a) $ 17.4 $ 7.0 $ 1.1 $ 10.3 $ 15.2 Valuation allowance for deferred tax assets 93.8 3.0 0.2 39.0 58.0 Year ended September 30, 2019 Allowance for doubtful accounts (a) $ 17.1 $ 6.1 $ — $ 5.8 $ 17.4 Valuation allowance for deferred tax assets 27.0 69.3 — 2.5 93.8 (a) Includes allowances for current and other long-term receivables. (b) Consists of amounts written off for the allowance for doubtful accounts and adjustments resulting from our ability to utilize foreign tax credits, capital losses, or net operating loss carryforwards for which a valuation allowance had previously been recorded.

Basis of Presentation and Acc_2

Basis of Presentation and Accounting Policies (Policies)	12 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
Principles of Consolidation	Principles of Consolidation The accompanying consolidated financial statements include the accounts of the Company and its wholly-owned and controlled majority-owned subsidiaries. Intercompany accounts and transactions have been eliminated in consolidation. Investments in affiliates over which we do not have control but exercise significant influence are accounted for using the equity method of accounting. These affiliated companies are not material individually or in the aggregate to our financial position, results of operations, or cash flows.
Use of Estimates	Use of Estimates The preparation of consolidated financial statements in accordance with U.S. GAAP requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the consolidated financial statements and revenues and expenses during the periods reported. Actual results could differ from those estimates. We use estimates in accounting for, among other items, customer returns, rebates and incentives; allowance for doubtful accounts; excess and obsolete inventory; share-based compensation; acquisitions, including consolidation and intangible assets; goodwill impairment; product warranty obligations; retirement benefits; litigation, claims and contingencies, including environmental matters, conditional asset retirement obligations, and contractual indemnifications; leases; and income taxes. We account for changes to estimates and assumptions prospectively when warranted by factually-based experience.
Revenue Recognition	Revenue Recognition On October 1, 2018, we adopted the new standard on revenue from contracts with customers using the modified retrospective method applied to contracts that were not completed as of October 1, 2018. See Note 2 for our revenue recognition policy under the new standard. We recorded a net increase to opening retained earnings of $6.1 million as of October 1, 2018, which reflects the cumulative impact of adopting the new standard. The primary drivers of the impact to retained earnings were changes to the capitalization and deferral of certain contract costs and the timing of revenue, net of costs, for software licenses bundled with services and projects previously accounted for on a completed contract basis. This impact was partially offset by a deferral of revenue, net of costs, related to the allocation of revenue to hardware and software products and services provided to our customers free of charge as incentives. Returns, Rebates and Incentives Our primary incentive program provides distributors with cash rebates or account credits based on agreed amounts that vary depending on the customer to whom our distributor ultimately sells the product. We also offer various other incentive programs that provide distributors and direct sale customers with cash rebates, account credits or additional hardware and software products, solutions and services based on meeting specified program criteria. Certain distributors are offered a right to return product, subject to contractual limitations. We record accruals for customer returns, rebates and incentives at the time of revenue recognition based primarily on historical experience. Returns are presented on the Consolidated Balance Sheet as a right of return asset and refund liability. Incentives in the form of rebates are estimated at the individual customer level and are recorded as a reduction of sales. Customer incentives for additional hardware and software products, solutions and services to be provided are considered distinct performance obligations. As such, we allocate revenue to them based on relative standalone selling price. Until the incentive is redeemed, the revenue is recorded as a contract liability. Taxes on Revenue Producing Transactions Taxes assessed by governmental authorities on revenue producing transactions, including sales, value added, excise and use taxes, are recorded on a net basis (excluded from revenue).
Cash and Cash Equivalents	Cash and Cash Equivalents Cash and cash equivalents include time deposits, certificates of deposit, and other fixed income securities with original maturities of three months or less at the time of purchase.
Receivables	Receivables We record an allowance for doubtful accounts based on customer-specific analysis and general matters such as current assessments of past due balances and economic conditions. Receivables are recorded net of an allowance for doubtful accounts of $13.2 million at September 30, 2021 and $15.2 million at September 30, 2020. In addition, receivables are recorded net of an allowance for certain customer returns, rebates and incentives of $6.7 million at September 30, 2021 and $8.1 million at September 30, 2020. The changes to our allowance for doubtful accounts during the years ended September 30, 2021 and 2020, were not material and primarily consisted of current-period provisions, write-offs charged against the allowance, recoveries collected, and foreign currency translation.
Inventories	Inventories Inventories are recorded at the lower of cost or market using the first-in, first-out (FIFO) or average cost methods. Market is determined on the basis of estimated realizable values.
Investments	Investments Investments include time deposits, certificates of deposit, other fixed income securities and equity securities. Investments with original maturities longer than three months at the time of purchase and less than one year from period end are classified as short-term. All other investments are classified as long-term. Fixed income securities meeting the definition of a security are accounted for as available-for-sale and recorded at fair value. Equity securities are recorded at fair value. All other investments are recorded at cost, which approximates fair value.
Property	PropertyProperty, including internal-use software, is recorded at cost. Equipment under finance leases are stated at the present value of minimum lease payments. We calculate depreciation of property using the straight-line method over 5 to 40 years for buildings and improvements, 3 to 20 years for machinery and equipment and 3 to 10 years for computer hardware and internal-use software. We capitalize significant renewals and enhancements and write off replaced units. Implementation costs incurred in a cloud computing arrangement that is a service contract are recorded in Other current assets and Other assets on the Consolidated Balance Sheet and are amortized over the expected service period. We expense maintenance and repairs, as well as renewals of minor amounts. Property acquired during the year that is accrued within accounts payable or other current liabilities at year end is considered to be a non-cash investing activity and is excluded from cash used for capital expenditures in the Consolidated Statement of Cash Flows.
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets Goodwill and other intangible assets generally result from business acquisitions. We account for business acquisitions by allocating the purchase price to tangible and intangible assets acquired and liabilities assumed at their fair values; the excess of the purchase price over the allocated amount is recorded as goodwill. We perform our annual evaluation of goodwill and indefinite life intangible assets for impairment as required under U.S. GAAP during the second quarter of each year, or more frequently if events or circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying value. Any excess in carrying value over the estimated fair value is charged to results of operations. For our annual evaluation of goodwill, we may perform a qualitative test to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount in order to determine whether it is necessary to perform a quantitative goodwill impairment test. Our reporting units for goodwill evaluation consist of the Intelligent Devices segment, the Software & Control segment, the Lifecycle Services segment (excluding Sensia), and Sensia. When performing the quantitative goodwill impairment test, we determine the fair value of each reporting unit under a combination of an income approach derived from discounted cash flows and a market multiples approach using selected comparable public companies. Significant assumptions used in the income approach include: management’s forecasted cash flows, including estimated future revenue growth rates and margins, discount rates, and terminal value. Forecasts of future revenue growth and margins are based on management’s best estimates. Actual results and forecasts of revenue growth and margins for our Sensia reporting unit may be impacted by its concentration within the Oil & Gas industry and with its customer base. Demand for Sensia hardware and software products, solutions, and services is sensitive to industry volatility and risks, including those related to commodity prices, supply and demand dynamics, production costs, geological activity, and political activities. Discount rates are determined using a weighted average cost of capital adjusted for risk factors specific to the reporting unit, with comparison to market and industry data. The terminal value is estimated following the common methodology of calculating the present value of estimated perpetual cash flow beyond the last projected period assuming constant discount and long-term growth rates. Significant assumptions used in the market multiples approach include selection of the comparable public companies and calculation of the appropriate market multiples. We amortize certain customer relationships on an accelerated basis over the period of which we expect the intangible asset to generate future cash flows. We amortize all other intangible assets with finite useful lives on a straight-line basis over their estimated useful lives. Useful lives assigned range from 3 to 15 years for trademarks, 8 to 20 years for customer relationships, 4 to 17 years for technology and 10 to 30 years for other intangible assets. Intangible assets also include costs of software developed or purchased by our software business to be sold, leased or otherwise marketed. Amortization of these computer software products is calculated on a product-by-product basis as the greater of (a) the unamortized cost at the beginning of the year times the ratio of the current year gross revenue for a product to the total of the current and anticipated future gross revenue for that product or (b) the straight-line amortization over the remaining estimated economic life of the product.
Impairment of Long-Lived Assets	Impairment of Long-Lived Assets We evaluate the recoverability of the recorded amount of long-lived assets, including property, operating lease right-of-use assets, capitalized implementation costs of a cloud computing arrangement, and other intangible assets, whenever events or changes in circumstances indicate that the recorded amount of an asset may not be fully recoverable. Impairment is assessed when the undiscounted expected future cash flows derived from an asset are less than its carrying amount. If we determine that an asset is impaired, we measure the impairment to be recognized as the amount by which the recorded amount of the asset exceeds its fair value. We report assets to be disposed of at the lower of the recorded amount or fair value less cost to sell. We determine fair value using a discounted future cash flow analysis.
Derivative Financial Instruments	Derivative Financial Instruments We use derivative financial instruments in the form of foreign currency forward exchange contracts to manage certain foreign currency risks. We enter into these 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. We also use these contracts to hedge portions of our net investments in certain non-U.S. subsidiaries against the effect of exchange rate fluctuations on the translation of foreign currency balances to the U.S. dollar. Additionally, we use derivative financial instruments in the form of interest rate swap contracts to manage our borrowing costs of certain long-term debt and use treasury locks to manage the potential change in interest rates in anticipation of issuance of fixed rate debt. We designate and account for these derivative financial instruments as hedges under U.S. GAAP. Furthermore, we use foreign currency forward exchange contracts that are not designated as hedges to offset transaction gains or losses associated with some of our assets and liabilities resulting from intercompany loans or other transactions with third parties that are denominated in currencies other than our entities’ functional currencies. It is our policy to execute such instruments with global financial institutions that we believe to be creditworthy and not to enter into derivative financial instruments for speculative purposes. Foreign currency forward exchange contracts are usually denominated in currencies of major industrial countries.
Fair Value of Financial Instruments	Fair Value of Financial Instruments We record various financial instruments at fair value. 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 hold financial instruments consisting of cash and short-term debt. The fair values of our cash and short-term debt approximate their carrying amounts as reported in our Consolidated Balance Sheet due to the short-term nature of these instruments. We also hold financial instruments consisting of long-term debt, investments and derivatives. The valuation methodologies for these financial instruments are described in Notes 7, 10, 11, and 14. We also determine fair value assessments in conjunction with intangible valuations of acquisitions and our annual impairment testing of goodwill and indefinite lived intangible assets. The valuation methodologies for these assets are described in Notes 3 and 4. The methods described in these Notes may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values. Furthermore, while we believe our valuation methods are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different fair value measurement at the reporting date.
Foreign Currency Translation	Foreign Currency Translation We translate assets and liabilities of subsidiaries operating outside of the United States with a functional currency other than the U.S. dollar into U.S. dollars using exchange rates at the end of the respective period. We translate sales, costs and expenses at average exchange rates effective during the respective period. We report foreign currency translation adjustments as a component of other comprehensive income (loss). Currency transaction gains and losses are included in results of operations in the period incurred.
Research and Development Expenses	Research and Development Expenses We expense research and development (R&D) costs as incurred; these costs were $422.5 million in 2021, $371.5 million in 2020, and $378.9 million in 2019. We include R&D expenses in cost of sales in the Consolidated Statement of Operations.
Income Taxes	Income Taxes We account for uncertain tax positions by determining whether it is more likely than not that a tax position will be sustained upon examination based on the technical merits of the position. For tax positions that meet the more-likely-than-not recognition threshold, we determine the amount of benefit to recognize in the consolidated financial statements based on our assertion of the most likely outcome resulting from an examination, including the resolution of any related appeals or litigation processes.
Earnings Per Share	Earnings Per Share We present basic and diluted earnings per share (EPS) amounts. Basic EPS is calculated by dividing earnings available to common shareowners, which is income excluding the allocation to participating securities, by the weighted average number of common shares outstanding during the year, excluding restricted stock. Diluted EPS amounts are based upon the weighted average number of common and common-equivalent shares outstanding during the year. We use the treasury stock method to calculate the effect of outstanding share-based compensation awards, which requires us to compute total employee proceeds as the sum of the amount the employee must pay upon exercise of the award and the amount of unearned share-based compensation costs attributed to future services. Share-based compensation awards for which the total employee proceeds of the award exceed the average market price of the same award over the period have an antidilutive effect on EPS, and accordingly, we exclude them from the calculation. Antidilutive share-based compensation awards for the years ended September 30, 2021 (0.2 million shares), 2020 (1.6 million shares), and 2019 (1.8 million shares), were excluded from the diluted EPS calculation. U.S. GAAP requires unvested share-based payment awards that contain non-forfeitable rights to dividends or dividend equivalents, whether paid or unpaid, to be treated as participating securities and included in the computation of earnings per share pursuant to the two-class method. Our participating securities are composed of restricted stock and non-employee director restricted stock units.
Share-Based Compensation	Share-Based CompensationWe recognize share-based compensation expense for equity awards on a straight-line basis over the service period of the award based on the fair value of the award as of the grant date.
Product and Workers' Compensation Liabilities	Product and Workers’ Compensation Liabilities We record accruals for product and workers’ compensation claims in the period in which they are probable and reasonably estimable. Our principal self-insurance programs include product liability and workers’ compensation where we self-insure up to a specified dollar amount. Claims exceeding this amount up to specified limits are covered by insurance policies purchased from commercial insurers. We estimate the liability for the majority of the self-insured claims using our claims experience for the periods being valued.
Environmental Matters and Conditional Asset Retirement Obligations	Environmental Matters We record liabilities for environmental matters in the period in which our responsibility is probable and the costs can be reasonably estimated. We make changes to the liabilities in the periods in which the estimated costs of remediation change. At third-party environmental sites where more than one potentially responsible party has been identified, we record a liability for our estimated allocable share of costs related to our involvement with the site, as well as an estimated allocable share of costs related to the involvement of insolvent or unidentified parties. If we determine that recovery from insurers or other third parties is probable and a right of setoff exists, we record the liability net of the estimated recovery. If we determine that recovery from insurers or other third parties is probable but a right of setoff does not exist, we record a liability for the total estimated costs of remediation and a receivable for the estimated recovery. At environmental sites where we are the sole responsible party, we record a liability for the total estimated costs of remediation. Ongoing operating and maintenance expenditures included in our environmental remediation obligations are discounted to present value over the probable future remediation period. Our remaining environmental remediation obligations are undiscounted due to subjectivity of timing and/or amount of future cash payments. Conditional Asset Retirement Obligations We record liabilities for costs related to legal obligations associated with the retirement of a tangible, long-lived asset that results from the acquisition, construction, development or the normal operation of the long-lived asset. The obligation to perform the asset retirement activity is not conditional even though the timing or method may be conditional.
Leases	Leases We have operating leases primarily for real estate, vehicles, and equipment. We have finance leases primarily for equipment. We determine if a contract is, or contains, a lease at contract inception. A right-of-use (ROU) asset and a corresponding lease liability are recognized at commencement for contracts that are, or contain, a lease with an original term greater than 12 months. ROU assets represent our right to use an underlying asset during the lease term, including periods for which renewal options are reasonably certain to be exercised, and lease liabilities represent our obligation to make lease payments arising from the lease. Operating lease expense is recognized on a straight-line basis over the lease term for leases with an original term of 12 months or less. Amortization expense of the ROU asset for finance leases is recognized on a straight-line basis over the lease term and interest expense for finance leases is recognized based on the incremental borrowing rate. Some leasing arrangements require variable payments that are dependent on usage or may vary for other reasons, such as payments for insurance and tax payments. A portion of our real estate leases is generally subject to annual changes based upon an index. The changes based upon the index are treated as variable lease payments. The variable portion of lease payments is not included in our ROU assets or lease liabilities and is expensed when incurred. We elected to not separate lease and nonlease components of contracts for most underlying asset classes. Accordingly, all expenses associated with a lease contract are accounted for as lease expenses. Lease liabilities are recognized at the contract commencement date based on the present value of remaining lease payments over the lease term. To calculate the lease liabilities we use our incremental borrowing rate. We determine our incremental borrowing rate at the commencement date using our unsecured borrowing rate, adjusted for collateralization and lease term. For leases denominated in a currency other than the U.S. dollar, the collateralized borrowing rate in the foreign currency is determined using the U.S. dollar and foreign currency swap spread. Long-term operating lease liabilities are presented as Operating lease liabilities and current operating lease liabilities are included in Other current liabilities Long-term debt Other current liabilities ROU assets are recognized at the contract commencement date at the value of the related lease liability, adjusted for any prepayments, lease incentives received and initial direct costs incurred. Operating lease ROU assets are presented as Operating lease right-of-use assets and finance lease ROU assets are presented as Property in the Consolidated Balance Sheet. Lease expenses, including amortization of ROU assets, for operating and finance leases are recognized on a straight-line basis over the lease term and recorded in Cost of sales and Selling, general and administrative expenses in the Consolidated Statement of Operations. Interest expense for finance leases is recorded in Interest expense in the Consolidated Statement of Operations.
Recently Adopted Accounting Pronouncements and Recently Issued Accounting Pronouncements	Recently Adopted Accounting Pronouncements In February 2016, the FASB issued a new standard on accounting for leases that requires lessees to recognize ROU assets and lease liabilities for most leases, among other changes to existing lease accounting guidance. This standard also requires additional qualitative and quantitative disclosures about leasing activities. We adopted this standard using the modified retrospective transition method, which resulted in an immaterial cumulative-effect adjustment to the opening balance of retained earnings as of October 1, 2019, our adoption date. The amount of lease ROU assets and corresponding lease liabilities recorded in the Consolidated Balance Sheet upon adoption were $316 million and $329 million, respectively. We have implemented necessary changes to accounting policies, processes, controls and systems to enable compliance with this standard. In February 2018, the FASB issued a new standard regarding the reporting of comprehensive loss, which gives entities the option to reclassify tax effects of the Tax Cuts and Jobs Act of 2017 (the “Tax Act”) stranded in accumulated other comprehensive loss into retained earnings. We adopted this standard as of October 1, 2019, and elected to reclassify tax effects of approximately $147 million from accumulated other comprehensive loss into retained earnings. In June 2016, the FASB issued a new standard that requires companies to utilize a current expected credit losses impairment (CECL) model for certain financial assets, including trade and other receivables. The CECL model requires that estimated expected credit losses, including allowance for doubtful accounts, consider a broader range of information such as economic conditions and expected changes in market conditions. We adopted the new standard as of October 1, 2020. The adoption of this standard did not have a material impact on our Consolidated Financial Statements. Recently Issued Accounting Pronouncements We do not expect any recently issued accounting pronouncements to have a material impact on our consolidated financial statements and related disclosures.
Product Warranty Obligations	Product Warranty ObligationsWe 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 known and reasonably estimable.
Fair Value of Derivative Instruments	Fair Value of Derivative Instruments 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 inputs including forward and spot prices for currency and interest rate curves. We did not change our valuation techniques during fiscal 2021, 2020 or 2019. 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 curre ncies of major industrial countries. The U.S. dollar-equivalent gross notional amount of our forward exchange contracts totaled $1,811.7 million at September 30, 2021. Currency pairs (buy/sell) comprising the most significant contract notional values were Euro/United States dollar (USD), USD/Canadian dollar, USD/Mexican peso, and USD/Swiss franc.

Basis of Presentation and Acc_3

Basis of Presentation and Accounting Policies (Tables)	12 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	The following table reconciles basic and diluted EPS amounts (in millions, except per share amounts): 2021 2020 2019 Net income attributable to Rockwell Automation $ 1,358.1 $ 1,023.4 $ 695.8 Less: Allocation to participating securities (2.1) (1.0) (0.7) Net income available to common shareowners $ 1,356.0 $ 1,022.4 $ 695.1 Basic weighted average outstanding shares 116.0 115.8 118.3 Effect of dilutive securities Stock options 1.0 0.7 0.9 Performance shares 0.1 0.1 0.1 Diluted weighted average outstanding shares 117.1 116.6 119.3 Earnings per share: Basic $ 11.69 $ 8.83 $ 5.88 Diluted $ 11.58 $ 8.77 $ 5.83

Revenue Recognition (Tables)

Revenue Recognition (Tables)	12 Months Ended
	Sep. 30, 2021
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	Year Ended September 30, 2021 Year Ended September 30, 2020 Intelligent Devices Software & Control Lifecycle Services Total Intelligent Devices Software & Control Lifecycle Services Total North America $ 2,075.4 $ 1,186.3 $ 871.1 $ 4,132.8 $ 1,860.1 $ 1,027.5 $ 872.6 $ 3,760.2 Europe, Middle East and Africa (EMEA) 595.9 375.0 434.8 1,405.7 518.5 300.5 430.3 1,249.3 Asia Pacific 432.5 273.9 305.8 1,012.2 372.6 254.1 242.0 868.7 Latin America 208.1 111.8 126.8 446.7 204.8 99.2 147.6 451.6 Total Company Sales $ 3,311.9 $ 1,947.0 $ 1,738.5 $ 6,997.4 $ 2,956.0 $ 1,681.3 $ 1,692.5 $ 6,329.8
Contract Balances	Below is a summary of our contract liabilities balance: September 30, 2021 September 30, 2020 Balance as of beginning of fiscal year $ 325.3 $ 275.6 Balance as of end of period 462.5 325.3

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	12 Months Ended
	Sep. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	Changes in the carrying amount of goodwill were (in millions): Architecture & Control Products Intelligent Devices Software & Control Lifecycle Services Total Balance as of September 30, 2019 $ 432.3 $ 638.8 $ — $ — $ — $ 1,071.1 Acquisition of businesses 161.2 390.7 — — — 551.9 Translation 15.9 11.4 — — — 27.3 Balance as of September 30, 2020 609.4 1,040.9 — — — 1,650.3 Reallocation due to change in segments (609.4) (1,040.9) 535.1 497.3 617.9 — Acquisition of businesses — — — 1,937.3 12.8 1,950.1 Translation — — 8.0 12.9 4.6 25.5 Balance as of September 30, 2021 $ — $ — $ 543.1 $ 2,447.5 $ 635.3 $ 3,625.9
Other Intangible Assets	Other intangible assets consist of (in millions): September 30, 2021 Carrying Accumulated Net Amortized intangible assets: Software products $ 90.4 $ 43.2 $ 47.2 Customer relationships 595.9 75.4 520.5 Technology 420.8 71.7 349.1 Trademarks 73.8 13.3 60.5 Other 7.1 6.3 0.8 Total amortized intangible assets 1,188.0 209.9 978.1 Allen-Bradley ® trademark not subject to amortization 43.7 — 43.7 Total $ 1,231.7 $ 209.9 $ 1,021.8 September 30, 2020 Carrying Accumulated Net Amortized intangible assets: Software products $ 192.7 $ 139.0 $ 53.7 Customer relationships 351.3 92.5 258.8 Technology 165.8 84.0 81.8 Trademarks 71.7 31.3 40.4 Other 14.4 13.5 0.9 Total amortized intangible assets 795.9 360.3 435.6 Allen-Bradley ® trademark not subject to amortization 43.7 — 43.7 Total $ 839.6 $ 360.3 $ 479.3

Acquisitions (Tables)

Acquisitions (Tables)	12 Months Ended
	Sep. 30, 2021
Business Combinations [Abstract]
Schedule of Business Acquisitions, by Acquisition	The preliminary aggregate purchase price allocation is as follows (in millions): Purchase Price Allocation Accounts receivable $ 14.8 All other assets 28.3 Goodwill 1,725.3 Intangible assets 531.4 Total assets acquired 2,299.8 Less: Contract liabilities (29.2) Less: Other liabilities assumed (31.8) Less: Deferred income taxes (33.3) Net assets acquired $ 2,205.5 Purchase Consideration Total purchase consideration, net of cash acquired $ 2,205.5 Purchase Price Allocation Accounts receivable $ 6.0 All other assets 15.9 Goodwill 224.8 Intangible assets 69.6 Total assets acquired 316.3 Less: Liabilities assumed (25.5) Less: Deferred income taxes (3.7) Net assets acquired $ 287.1 Purchase Consideration Total purchase consideration, net of cash acquired $ 287.1 Purchase Price Allocation Accounts receivable $ 31.2 Inventory 33.2 Other current assets 1.2 Property, plant and equipment 9.3 Other assets 6.2 Goodwill 307.4 Intangible assets 254.1 Total assets acquired 642.6 Less: Liabilities assumed (18.3) Less: Deferred income taxes (2.6) Less: Noncontrolling interest portion (293.8) Net assets acquired $ 327.9 Purchase Consideration Cash, net of cash acquired $ 247.0 Noncontrolling interest portion of Rockwell Automation's contributed business 25.8 Additional paid in capital adjustment 48.1 Other 7.0 Total purchase consideration, net of cash acquired $ 327.9 Purchase Price Allocation Accounts receivable $ 33.8 Inventory 9.6 Other current assets 1.0 Property, plant and equipment 5.9 Other assets 2.2 Goodwill 244.5 Intangible assets 76.5 Total assets acquired 373.5 Less: Liabilities assumed (28.6) Less: Deferred income taxes (14.4) Net assets acquired $ 330.5 Purchase Consideration Total purchase consideration, net of cash acquired $ 330.5

Inventories (Tables)

Inventories (Tables)	12 Months Ended
	Sep. 30, 2021
Inventory Disclosure [Abstract]
Inventories	Inventories consist of (in millions): September 30, 2021 2020 Finished goods $ 287.0 $ 243.0 Work in process 229.3 159.1 Raw materials 281.8 181.9 Inventories $ 798.1 $ 584.0

Property, net (Tables)

Property, net (Tables)	12 Months Ended
	Sep. 30, 2021
Property, Plant and Equipment [Abstract]
Property, net	Property consists of (in millions): September 30, 2021 2020 Land $ 4.8 $ 4.8 Buildings and improvements 397.6 383.0 Machinery and equipment 1,244.3 1,220.7 Internal-use software 522.4 506.4 Construction in progress 156.4 134.4 Total 2,325.5 2,249.3 Less accumulated depreciation (1,743.6) (1,674.9) Property, net $ 581.9 $ 574.4

Long-term and Short-term Debt (

Long-term and Short-term Debt (Tables)	12 Months Ended
	Sep. 30, 2021
Debt Disclosure [Abstract]
Schedule of Debt	Long-term debt consists of (in millions): September 30, 2021 2020 0.35% notes, payable in August 2023 $ 600.0 $ — 2.875% notes, payable in March 2025 315.6 320.1 6.70% debentures, payable in January 2028 250.0 250.0 3.50% notes, payable in March 2029 425.0 425.0 1.75% notes, payable in August 2031 450.0 — 6.25% debentures, payable in December 2037 250.0 250.0 4.20% notes, payable in March 2049 575.0 575.0 2.80% notes, payable in August 2061 450.0 — 5.20% debentures, payable in January 2098 200.0 200.0 Unamortized discount, capitalized lease obligations and other (51.0) (45.4) Long-term debt $ 3,464.6 $ 1,974.7
Schedule of Fair Value of Long-term Debt	The following table presents the carrying amounts and estimated fair values of long-term debt not recorded at fair value in the Consolidated Balance Sheet (in millions): September 30, 2021 September 30, 2020 Carrying Value Fair Value Carrying Value Fair Value Long-term debt $ 3,464.6 $ 3,874.8 $ 1,974.7 $ 2,497.7

Other Current Liabilities (Tabl

Other Current Liabilities (Tables)	12 Months Ended
	Sep. 30, 2021
Other Liabilities Disclosure [Abstract]
Other Current Liabilities	Other current liabilities consist of (in millions): September 30, 2021 2020 Unrealized losses on foreign exchange contracts (Note 11) $ 16.9 $ 24.3 Product warranty obligations (Note 9) 18.0 20.8 Taxes other than income taxes 59.8 58.5 Accrued interest 17.8 14.9 Income taxes payable 188.4 79.8 Operating lease liabilities 89.9 89.7 Other 93.6 88.5 Other current liabilities $ 484.4 $ 376.5

Product Warranty Obligations (T

Product Warranty Obligations (Tables)	12 Months Ended
	Sep. 30, 2021
Product Warranties Disclosures [Abstract]
Changes in Product Warranty Obligations	Changes in product warranty obligations were (in millions): September 30, 2021 2020 Beginning balance $ 20.8 $ 25.2 Warranties recorded at time of sale 17.3 17.8 Adjustments to pre-existing warranties (6.2) (1.6) Settlements of warranty claims (13.9) (20.6) Ending balance $ 18.0 $ 20.8

Investments (Tables)

Investments (Tables)	12 Months Ended
	Sep. 30, 2021
Investments, Debt and Equity Securities [Abstract]
Schedule of Investments	Our investments consist of (in millions): September 30, 2021 2020 Fixed income securities $ 0.6 $ 0.6 Equity securities 1,267.6 875.3 Other 95.9 78.2 Total investments 1,364.1 954.1 Less: short-term investments (1) (0.6) (0.6) Long-term investments $ 1,363.5 $ 953.5 (1) Short-term investments are included in other current assets in the Consolidated Balance Sheet.

Derivative Instruments (Tables)

Derivative Instruments (Tables)	12 Months Ended
	Sep. 30, 2021
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 (loss) related to cash flow hedges that would have been recorded in the Consolidated Statement of Operations had they not been so designated was (in millions): 2021 2020 2019 Forward exchange contracts $ (10.8) $ (9.7) $ 29.5 Treasury locks (28.0) — (35.7)
Schedule of Cash Flow Hedging Instruments, Statements of Financial Performance and Financial Position, Location	The pre-tax amount of gains (losses) reclassified from accumulated other comprehensive loss into the 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): 2021 2020 2019 Sales $ 1.9 $ (0.7) $ 1.0 Cost of sales (25.4) 19.6 18.2 Selling, general and administrative expenses 1.5 (1.4) (1.3) Interest expense (2.3) (2.1) (1.2) Total $ (24.3) $ 15.4 $ 16.7
Schedule of Net Investment Hedges in Accumulated Other Comprehensive Income (Loss)	The pre-tax amount of (losses) gains recorded in other comprehensive income (loss) related to net investment hedges that would have been recorded in the Consolidated Statement of Operations had they not been so designated was (in millions): 2021 2020 2019 Forward exchange contracts $ (0.8) $ (1.3) $ (4.9)
Schedule of Fair Value Hedging Instruments, Statements of Financial Performance and Financial Position, Location	The pre-tax amount of net gains recognized within the Consolidated Statement of Operations related to derivative instruments designated as fair value hedges, which fully offset the related net gains and losses on the hedged debt instruments during the periods presented, was (in millions): 2021 2020 2019 Interest income $ — $ 15.1 $ 30.9
Schedule of Other Derivatives Not Designated as Hedging Instruments, Statements of Financial Performance and Financial Position, Location	The pre-tax amount of gains (losses) from forward exchange contracts not designated as hedging instruments recognized in the Consolidated Statement of Operations was (in millions): 2021 2020 2019 Cost of sales $ (0.2) $ 6.1 $ (0.4) Other (expense) income (8.1) (11.8) 1.6 Total $ (8.3) $ (5.7) $ 1.2
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value	The fair value of our derivatives and their location in our Consolidated Balance Sheet were (in millions): Fair Value (Level 2) Derivatives Designated as Hedging Instruments Balance Sheet Location September 30, 2021 September 30, 2020 Forward exchange contracts Other current assets $ 7.6 $ 6.9 Forward exchange contracts Other assets 2.1 1.0 Forward exchange contracts Other current liabilities (7.4) (13.4) Forward exchange contracts Other liabilities (0.2) (3.2) Total $ 2.1 $ (8.7) Fair Value (Level 2) Derivatives Not Designated as Hedging Instruments Balance Sheet Location September 30, 2021 September 30, 2020 Forward exchange contracts Other current assets $ 4.4 $ 6.1 Forward exchange contracts Other current liabilities (9.5) (10.9) Total $ (5.1) $ (4.8) Refer to Note 1 for further information regarding levels in the fair value hierarchy.

Shareowners' Equity (Tables)

Shareowners' Equity (Tables)	12 Months Ended
	Sep. 30, 2021
Equity [Abstract]
Schedule of Stockholders Equity	Changes in outstanding common shares are summarized as follows (in millions): 2021 2020 2019 Beginning balance 116.2 115.7 121.0 Treasury stock purchases (1.1) (1.4) (6.1) Common stock issued (including share based compensation impact) 0.9 1.9 0.8 Ending balance 116.0 116.2 115.7
Schedule of Accumulated Other Comprehensive Income (Loss)	Changes in accumulated other comprehensive loss attributable to Rockwell Automation by component were (in millions): Pension and other postretirement benefit plan adjustments, net of tax (Note 14) Accumulated currency translation adjustments, net of tax Net unrealized gains (losses) on cash flow hedges, net of tax Net unrealized gains (losses) on available-for-sale investments, net of tax Total accumulated other comprehensive loss, net of tax Balance as of September 30, 2018 $ (658.1) $ (286.0) $ 4.4 $ (2.2) $ (941.9) Other comprehensive income (loss) before reclassifications (532.1) (55.3) (5.3) 2.2 (590.5) Amounts reclassified from accumulated other comprehensive loss 56.5 — (12.1) — 44.4 Other comprehensive income (loss) (475.6) (55.3) (17.4) 2.2 (546.1) Balance as of September 30, 2019 $ (1,133.7) $ (341.3) $ (13.0) $ — $ (1,488.0) Other comprehensive income (loss) before reclassifications (100.2) 26.0 (7.3) — (81.5) Amounts reclassified from accumulated other comprehensive loss 109.5 — (11.2) — 98.3 Other comprehensive income (loss) 9.3 26.0 (18.5) — 16.8 Adoption of accounting standard/other (146.8) 3.8 — — (143.0) Balance as of September 30, 2020 $ (1,271.2) $ (311.5) $ (31.5) $ — $ (1,614.2) Other comprehensive income (loss) before reclassifications 438.9 31.4 (29.2) — 441.1 Amounts reclassified from accumulated other comprehensive loss 138.2 — 17.8 — 156.0 Other comprehensive income (loss) 577.1 31.4 (11.4) — 597.1 Balance as of September 30, 2021 $ (694.1) $ (280.1) $ (42.9) $ — $ (1,017.1)
Reclassification of Accumulated Other Comprehensive Income (Loss)	The reclassifications out of accumulated other comprehensive loss to the Consolidated Statement of Operations were (in millions): Year Ended September 30, Affected Line in the Consolidated Statement of Operations 2021 2020 2019 Pension and other postretirement benefit plan adjustments (1) : Amortization of prior service credit $ (4.0) $ (4.5) $ (4.2) Other income (expense) Amortization of net actuarial loss 142.5 148.7 78.7 Other income (expense) Settlements 39.8 — 1.2 Other income (expense) 178.3 144.2 75.7 Income before income taxes (40.1) (34.7) (19.2) Income tax provision $ 138.2 $ 109.5 $ 56.5 Net income Net unrealized losses (gains) on cash flow hedges: Forward exchange contracts $ (1.9) $ 0.7 $ (1.0) Sales Forward exchange contracts 25.4 (19.6) (18.2) Cost of sales Forward exchange contracts (1.5) 1.4 1.3 Selling, general and administrative expenses Treasury locks related to 2019 and 2021 debt issuances 2.3 2.1 1.2 Interest expense 24.3 (15.4) (16.7) Income before income taxes (6.5) 4.2 4.6 Income tax provision $ 17.8 $ (11.2) $ (12.1) Net income Total reclassifications $ 156.0 $ 98.3 $ 44.4 Net income (1) These components are included in the computation of net periodic benefit costs. See Note 14 for further information.

Share-Based Compensation (Table

Share-Based Compensation (Tables)	12 Months Ended
	Sep. 30, 2021
Share-based Payment Arrangement [Abstract]
Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions	We estimated the fair value of each stock option on the date of grant using the Black-Scholes pricing model and the following assumptions: 2021 2020 2019 Average risk-free interest rate 0.38 % 1.63 % 2.79 % Expected dividend yield 1.73 % 2.08 % 2.27 % Expected volatility 31 % 24 % 23 % Expected term (years) 4.9 4.9 5.0
Schedule of Share-Based Compensation, Stock Options, Activity	A summary of stock option activity for the year ended September 30, 2021, is as follows: Shares Wtd. Avg. Wtd. Avg. Aggregate Outstanding at October 1, 2020 3,404 $ 164.81 Granted 196 246.87 Exercised (985) 156.98 Forfeited (118) 191.64 Canceled (1) 191.15 Outstanding at September 30, 2021 2,496 173.07 6.6 $ 302.0 Exercisable at September 30, 2021 1,470 155.05 5.6 204.3
Schedule of Nonvested Performance-based Units Activity	A summary of performance share activity for the year ended September 30, 2021, is as follows: Performance Wtd. Avg. Outstanding at October 1, 2020 124 $ 204.92 Granted (1) 44 298.10 Adjustment for performance results achieved (2) (2) 219.04 Vested and issued (31) 219.04 Forfeited (16) 217.93 Outstanding at September 30, 2021 119 232.94 (1) Performance shares granted assuming achievement of performance goals at target. (2) Adjustments were due to the number of shares vested under fiscal 2018 awards at the end of the three-year performance period ended September 30, 2020, being lower than the target number of shares.
Schedule of Performance Shares Vested	The following table summarizes information about performance shares vested during the years ended September 30, 2021, 2020, and 2019: 2021 2020 2019 Percent payout 93 % 77 % 200 % Shares vested (in thousands) 31 28 145 Total fair value of shares vested (in millions) $ 7.4 $ 5.6 $ 25.8
Schedule of Share-Based Payment Award, Performance-Based Units, Valuation Assumptions	The per-share fair value of performance share awards granted during the years ended September 30, 2021, 2020, and 2019, was $298.10, $265.04 and $155.04, respectively, which we determined using a Monte Carlo simulation and the following assumptions: 2021 2020 2019 Average risk-free interest rate 0.19 % 1.58 % 2.77 % Expected dividend yield 1.73 % 2.06 % 2.24 % Expected volatility 37 % 25 % 23 %
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity	A summary of restricted stock and restricted stock unit activity for the year ended September 30, 2021, is as follows: Restricted Wtd. Avg. Outstanding at October 1, 2020 163 $ 182.66 Granted 254 265.32 Vested (42) 188.87 Forfeited (24) 205.15 Outstanding at September 30, 2021 351 $ 239.89

Retirement Benefits (Tables)

Retirement Benefits (Tables)	12 Months Ended
	Sep. 30, 2021
Retirement Benefits [Abstract]
Schedule of Net Periodic Benefit Cost (Income)	The components of net periodic benefit cost (income) are (in millions): Pension Benefits Other Postretirement Benefits 2021 2020 2019 2021 2020 2019 Service cost $ 90.1 $ 91.1 $ 78.2 $ 1.2 $ 1.0 $ 0.9 Interest cost 125.6 136.4 158.3 1.2 1.6 2.3 Expected return on plan assets (241.3) (244.8) (244.7) — — — Amortization: Prior service cost (credit) 1.4 0.9 1.2 (5.4) (5.4) (5.4) Net actuarial loss 141.4 147.3 77.8 1.1 1.4 0.9 Settlements 39.8 — 1.2 — — — Net periodic benefit cost (income) $ 157.0 $ 130.9 $ 72.0 $ (1.9) $ (1.4) $ (1.3)
Schedule of Assumptions Used	Significant assumptions used in determining net periodic benefit cost (income) are (in weighted averages): Pension Benefits Other Postretirement Benefits 2021 2020 2019 2021 2020 2019 U.S. Plans Discount rate 2.90 % 3.30 % 4.35 % 2.15 % 2.90 % 4.15 % Expected return on plan assets 7.25 % 7.50 % 7.50 % — — — Compensation increase rate 3.40 % 3.40 % 3.50 % — — — Non-U.S. Plans Discount rate 1.56 % 1.60 % 2.48 % 2.20 % 2.65 % 3.30 % Expected return on plan assets 4.68 % 5.11 % 5.22 % — — — Compensation increase rate 2.90 % 3.06 % 3.02 % — — — Significant assumptions used in determining the benefit obligations are (in weighted averages): Pension Benefits Other Postretirement Benefits 2021 2020 2021 2020 U.S. Plans Discount rate 3.10 % 2.90 % 2.50 % 2.15 % Compensation increase rate 3.40 % 3.40 % — — Health care cost trend rate (1) — — 6.00 % 6.25 % Non-U.S. Plans Discount rate 2.03 % 1.56 % 2.90 % 2.20 % Compensation increase rate 3.00 % 2.90 % — — Health care cost trend rate (1) — — 4.50 % 4.50 % (1) The health care cost trend rate reflects the estimated increase in gross medical claims costs. As a result of the plan amendment adopted effective October 1, 2002, our effective per person retiree medical cost increase is zero percent beginning in 2005 for the majority of our postretirement benefit plans. For our other plans, we assume the gross health care cost trend rate will remain at 6.00% in 2022 and decrease to 5.00% in 2025 for U.S. Plans and will not change in future periods for Non-U.S. Plans.
Schedule of Net Funded Status	Benefit obligation, plan assets, funded status and net liability information is summarized as follows (in millions): Pension Benefits Other Postretirement Benefits 2021 2020 2021 2020 Benefit obligation at beginning of year $ 5,026.9 $ 4,907.3 $ 57.0 $ 60.7 Service cost 90.1 91.1 1.2 1.0 Interest cost 125.6 136.4 1.2 1.6 Actuarial (gains) losses (162.6) 154.1 (4.9) (1.4) Acquisitions — (0.6) — — Plan amendments 0.1 — — — Plan participant contributions 2.8 3.1 3.1 3.0 Benefits paid (156.9) (285.0) (8.8) (7.8) Settlements (219.3) (10.5) — — Currency translation and other 45.1 31.0 2.7 (0.1) Benefit obligation at end of year 4,751.8 5,026.9 51.5 57.0 Plan assets at beginning of year 3,838.0 3,753.1 — — Actual return on plan assets 653.7 266.0 — — Company contributions 34.9 84.1 5.7 4.8 Plan participant contributions 2.8 3.1 3.1 3.0 Benefits paid (156.9) (285.0) (8.8) (7.8) Settlements (219.3) (10.5) — — Currency translation and other 39.0 27.2 — — Plan assets at end of year 4,192.2 3,838.0 — — Funded status of plans $ (559.6) $ (1,188.9) $ (51.5) $ (57.0)
Schedule of Amounts Recognized in Balance Sheet	Net amount on balance sheet consists of: Other assets $ 118.5 $ 27.9 $ — $ — Compensation and benefits (37.0) (13.9) (5.7) (5.8) Retirement benefits (641.1) (1,202.9) (45.8) (51.2) Net amount on balance sheet $ (559.6) $ (1,188.9) $ (51.5) $ (57.0)
Schedule of Defined Benefit Plan Amounts Recognized in Other Comprehensive Income (Loss)	Amounts included in accumulated other comprehensive loss, net of tax, which have not yet been recognized in net periodic benefit cost are as follows (in millions): Pension Benefits Other Postretirement Benefits 2021 2020 2021 2020 Prior service (credit) cost $ (30.7) $ 3.3 $ 4.1 $ — Net actuarial loss 718.7 1,262.1 2.0 5.8 Total $ 688.0 $ 1,265.4 $ 6.1 $ 5.8
Schedule of Accumulated and Projected Benefit Obligations	Information regarding our pension plans with projected benefit obligations in excess of the fair value of plan assets (underfunded plans) are as follows (in millions): 2021 2020 Projected benefit obligation $ 4,210.5 $ 4,482.0 Fair value of plan assets 3,532.4 3,265.2 Information regarding our pension plans with accumulated benefit obligations in excess of the fair value of plan assets (underfunded plans) are as follows (in millions): 2021 2020 Accumulated benefit obligation $ 3,510.7 $ 4,113.4 Fair value of plan assets 3,156.7 3,265.2
Schedule of Expected Benefit Payments	The following benefit payments, which include employees’ expected future service, as applicable, are expected to be paid (in millions): Pension Benefits Other 2022 $ 327.5 $ 5.8 2023 284.4 5.5 2024 289.0 5.1 2025 288.8 4.8 2026 289.9 4.5 2027-2031 1,420.8 17.4
Schedule of Weighted Average Allocation of Plan Assets	Our global weighted-average targeted and actual asset allocations at September 30, by asset category, are: Allocation Target September 30, Asset Category Range Allocations 2021 2020 Equity securities 40% – 65% 50% 56% 50% Debt securities 30% – 50% 43% 38% 43% Other 0% – 15% 7% 6% 7%
Schedule of Allocation of Plan Assets	The following table presents our pension plans’ investments measured at fair value as of September 30, 2021: Level 1 Level 2 Level 3 Total U.S. Plans Cash and cash equivalents $ 3.5 $ — $ — $ 3.5 Equity securities: Mutual funds 88.7 — — 88.7 Common stock 1,159.8 — — 1,159.8 Common collective trusts — 609.2 — 609.2 Fixed income securities: Corporate debt — 678.2 — 678.2 Government securities 290.5 66.5 — 357.0 Common collective trusts — 119.7 — 119.7 Other types of investments: Insurance contracts — — 0.9 0.9 Total U.S. Plans investments in fair value hierarchy $ 1,542.5 $ 1,473.6 $ 0.9 3,017.0 U.S. Plans investments measured at NAV: Private equity 30.3 Alternative equity — Total U.S. Plans investments 3,047.3 Non-U.S. Plans Cash and cash equivalents $ 8.5 $ — $ — 8.5 Equity securities: Common stock 170.3 — — 170.3 Common collective trusts — 334.9 — 334.9 Fixed income securities: Corporate debt — 64.7 — 64.7 Government securities 1.4 — — 1.4 Common collective trusts — 357.0 — 357 Other types of investments: Real estate funds — 81.1 — 81.1 Insurance contracts — — 106.2 106.2 Other — — 4.7 4.7 Total Non-U.S. Plans investments in fair value hierarchy $ 180.2 $ 837.7 $ 110.9 1,128.8 Non-U.S. Plans investments measured at NAV: Real estate funds 16.1 Total Non-U.S. Plans investments 1,144.9 Total investments measured at fair value $ 4,192.2 The following table presents our pension plans’ investments measured at fair value as of September 30, 2020: Level 1 Level 2 Level 3 Total U.S. Plans Cash and cash equivalents $ 1.4 $ — $ — $ 1.4 Equity securities: Mutual funds 112.4 — — 112.4 Common stock 947.7 — — 947.7 Common collective trusts — 467.4 — 467.4 Fixed income securities: Corporate debt — 699.3 — 699.3 Government securities 244.7 133.1 — 377.8 Common collective trusts — 169.0 — 169.0 Other types of investments: Insurance contracts — — 0.9 0.9 Total U.S. Plans investments in fair value hierarchy $ 1,306.2 $ 1,468.8 $ 0.9 2,775.9 U.S. Plans investments measured at NAV: Private equity 23.5 Alternative equity 18.4 Total U.S. Plans investments 2,817.8 Non-U.S. Plans Cash and cash equivalents $ 1.9 $ — $ — 1.9 Equity securities: Common stock 62.4 — — 62.4 Common collective trusts — 329.3 — 329.3 Fixed income securities: Corporate debt — 65.6 — 65.6 Government securities 1.1 — — 1.1 Common collective trusts — 350.9 — 350.9 Other types of investments: Real estate funds — 78.9 — 78.9 Insurance contracts — — 110.2 110.2 Other — — 4.6 4.6 Total Non-U.S. Plans investments in fair value hierarchy $ 65.4 $ 824.7 $ 114.8 1,004.9 Non-U.S. Plans investments measured at NAV: Real estate funds 15.3 Total Non-U.S. Plans investments 1,020.2 Total investments measured at fair value $ 3,838.0
Defined Benefit Plan Change in Fair Value of Plan Assets Level Three	The table below sets forth a summary of changes in fair market value of our pension plans’ Level 3 assets for the year ended September 30, 2021: Balance Realized Gains (Losses) Unrealized Gains (Losses) Purchases, Sales, Issuances, and Settlements, Net Balance September 30, 2021 U.S. Plans Insurance contracts $ 0.9 $ — $ — $ — $ 0.9 Non-U.S. Plans Insurance contracts 110.2 — (5.7) 1.7 106.2 Other 4.6 — 0.1 — 4.7 $ 115.7 $ — $ (5.6) $ 1.7 $ 111.8 The table below sets forth a summary of changes in fair market value of our pension plans’ Level 3 assets for the year ended September 30, 2020: Balance Realized Gains (Losses) Unrealized Gains (Losses) Purchases, Sales, Issuances, and Settlements, Net Balance September 30, 2020 U.S. Plans Insurance contracts $ 0.9 $ — $ — $ — $ 0.9 Non-U.S. Plans Insurance contracts 95.4 — 13.0 1.8 110.2 Other 4.5 — 0.1 — 4.6 $ 100.8 $ — $ 13.1 $ 1.8 $ 115.7

Other Income (Expense) (Tables)

Other Income (Expense) (Tables)	12 Months Ended
	Sep. 30, 2021
Other Income and Expenses [Abstract]
Components of Other Income (Expense)	The components of other income (expense) are (in millions): 2021 2020 2019 Interest income $ 1.6 $ 5.5 $ 11.1 Royalty income 10.2 8.9 10.2 Legacy product liability and environmental charges (10.6) (14.5) (22.1) Non-operating pension and postretirement benefit (cost) credit (63.8) (37.4) 8.4 Legal Settlement (Note 17) 70.0 — — Other (1.7) 7.8 (1.5) Other income (expense) $ 5.7 $ (29.7) $ 6.1

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Sep. 30, 2021
Income Tax Disclosure [Abstract]
Schedule of Income before Income Tax, Domestic and Foreign	Selected income tax data (in millions): 2021 2020 2019 Components of income before income taxes: United States $ 885.1 $ 556.2 $ 280.8 Non-United States 641.1 579.9 620.2 Total $ 1,526.2 $ 1,136.1 $ 901.0
Schedule of Components of Income Tax Expense (Benefit)	Components of the income tax provision: Current: United States $ 149.6 $ 68.1 $ 105.6 Non-United States 190.7 96.6 112.1 State and local 25.7 13.9 16.5 Total current 366.0 178.6 234.2 Deferred: United States (154.7) (32.8) (27.0) Non-United States (19.0) (24.7) (0.1) State and local (10.4) (8.2) (1.9) Total deferred (184.1) (65.7) (29.0) Income tax provision $ 181.9 $ 112.9 $ 205.2 Total income taxes paid $ 329.3 $ 187.9 $ 293.3
Schedule of Effective Income Tax Rate Reconciliation	The reconciliation between the U.S. federal statutory rate and our effective tax rate was: 2021 2020 2019 Statutory tax rate 21.0 % 21.0 % 21.0 % State and local income taxes 1.4 0.8 0.1 Non-United States taxes (3.8) (5.0) (4.8) Repatriation of foreign earnings 0.9 1.3 2.8 Foreign-derived intangible income (2.8) (1.0) (1.6) Settlements with taxing authorities (1.0) (0.2) — Sensia formation 0.1 (1.1) — Change in valuation allowance (a) (1.7) (2.7) 7.6 Share-based compensation (1.1) (1.9) (0.9) Research and development tax credit (0.6) (1.1) (1.2) Other (0.5) (0.2) (0.2) Effective income tax rate 11.9 % 9.9 % 22.8 % (a) During fiscal year 2021, we reversed our valuation allowance against deferred tax assets associated with the change in fair value of the PTC Shares. This resulted in a decrease to the effective tax rate of 1.7% and no remaining valuation allowance related to PTC Shares, as described further in the table below.
Schedule of Deferred Tax Assets and Liabilities	The tax effects of temporary differences that give rise to our net deferred income tax assets (liabilities) were (in millions): 2021 2020 Deferred income tax assets: Compensation and benefits $ 41.7 $ 6.0 Inventory 12.8 10.5 Returns, rebates and incentives 37.5 34.5 Retirement benefits 153.1 306.8 Environmental remediation and other site-related costs 22.8 23.8 Share-based compensation 18.5 18.6 Other accruals and reserves 250.2 68.4 Investments — 31.6 Net operating loss carryforwards 130.4 31.1 Tax credit carryforwards 20.3 17.3 Capital loss carryforwards 15.3 10.8 Other 23.7 16.8 Subtotal 726.3 576.2 Valuation allowance (32.6) (58.0) Net deferred income tax assets 693.7 518.2 Deferred income tax liabilities: Property (43.7) (48.0) Intangible assets (160.5) (25.3) Investments (64.3) — Unremitted earnings of foreign subsidiaries (42.0) (28.3) Other (2.3) (1.0) Deferred income tax liabilities (312.8) (102.6) Total net deferred income tax assets $ 380.9 $ 415.6
Schedule of Tax Attributes and Valuation Allowances	Tax attributes and related valuation allowances at September 30, 2021 were (in millions): Tax attributes and related valuation allowances Tax Benefit Amount Valuation Allowance Carryforward Non-United States net operating loss carryforward $ 6.6 $ 6.2 2022 - 9/30/2030 Non-United States net operating loss carryforward 36.5 3.2 Indefinite Non-United States capital loss carryforward 15.3 15.3 Indefinite United States credit carryforward 9.4 1.2 2030 - 2041 United States net operating loss carryforward 19.4 — 2022 - 2037 United States net operating loss carryforward 50.7 — Indefinite State and local net operating loss carryforward 17.2 1.2 2022 - 2038 State tax credit carryforward 10.9 — 2022 - 2035 Subtotal 166.0 27.1 Other deferred tax assets 5.5 5.5 Indefinite Total $ 171.5 $ 32.6
Schedule of Gross Unrecognized Tax Benefits	A reconciliation of our gross unrecognized tax benefits, excluding interest and penalties, is as follows (in millions): 2021 2020 2019 Gross unrecognized tax benefits balance at beginning of year $ 25.5 $ 19.9 $ 20.1 Additions based on tax positions related to the current year 0.1 — — Additions based on tax positions related to prior years 0.4 5.6 — Reductions based on tax positions related to prior years — — — Reductions related to settlements with taxing authorities (18.1) — — Reductions related to lapses of statute of limitations (3.6) — (0.2) Effect of foreign currency translation — — — Gross unrecognized tax benefits balance at end of year $ 4.3 $ 25.5 $ 19.9

Leases (Tables)

Leases (Tables)	12 Months Ended
	Sep. 30, 2021
Leases [Abstract]
Lease, Cost	The components of lease expense were as follows (in millions): 2021 2020 Operating lease expense (1) $ 109.8 $ 104.6 Variable lease expense (2) 15.8 15.6 Finance lease expense Amortization of right-of-use assets 1.7 1.3 Interest on lease liabilities 0.4 0.4 Total lease expense $ 127.7 $ 121.9 (1) Operating lease expense includes short-term lease expense which was not material. (2) Variable lease expense includes sublease income which was not material. Supplemental cash flow information related to leases was as follows (in millions): 2021 2020 Cash paid for amounts included in the measurement of lease liabilities Operating cash flows from operating leases $ 108.5 $ 103.6 Operating cash flows from finance leases 0.4 0.4 Financing cash flows from finance leases 1.8 1.2 Right-of-use assets obtained in exchange for lease obligations Operating leases $ 90.6 $ 131.2 Financing leases 0.9 —
Supplemental Balance Sheet Information	Supplemental balance sheet information related to leases was as follows (in millions): 2021 2020 Weighted average remaining lease term: Operating leases 6.8 years 6.3 years Finance leases 4.3 years 7.8 years Weighted average discount rate: Operating leases 1.79 % 1.84 % Finance leases 3.96 % 3.50 %
Operating Lease Maturity	Maturities of lease liabilities as of September 30, 2021, were as follows (in millions): Finance Leases Operating Leases 2022 $ 5.6 $ 96.2 2023 3.5 81.3 2024 1.9 62.9 2025 1.6 45.5 2026 1.6 33.0 Thereafter 2.8 110.1 Total undiscounted lease payments $ 17.0 $ 429.0 Less imputed interest (1.5) (25.5) Total lease liabilities $ 15.5 $ 403.5

Business Segment Information (T

Business Segment Information (Tables)	12 Months Ended
	Sep. 30, 2021
Segment Reporting [Abstract]
Schedule of Reportable Segments	The composition of our segments is as follows: Intelligent Devices Software & Control (1) Lifecycle Services (2) Drives (2) Control software & hardware Consulting Motion (1) Visualization software & hardware Professional services and solutions Safety (1) Digital twin & simulation software Connected services Sensing (1) Information solutions software Maintenance services Industrial components (2) Network & security infrastructure Sensia joint venture Configured-to-order products (2) (1) Formerly part of the Architecture & Software segment (2) Formerly part of the Control Products & Solutions segment The following tables reflect the sales and operating results of our reportable segments including recast information for fiscal 2020 and 2019 (in millions): 2021 2020 2019 Sales: Intelligent Devices $ 3,311.9 $ 2,956.0 $ 3,279.7 Software & Control 1,947.0 1,681.3 1,790.0 Lifecycle Services 1,738.5 1,692.5 1,625.1 Total $ 6,997.4 $ 6,329.8 $ 6,694.8 Segment operating earnings: Intelligent Devices $ 702.1 $ 587.8 $ 697.0 Software & Control 531.0 473.8 531.2 Lifecycle Services 158.2 196.3 245.4 Total 1,391.3 1,257.9 1,473.6 Purchase accounting depreciation and amortization (55.1) (41.4) (16.6) Corporate and other (120.6) (98.9) (108.8) Non-operating pension and postretirement benefit (cost) credit (63.8) (37.4) 8.4 Gain (loss) on investments 397.4 153.9 (402.2) Valuation adjustments related to the registration of PTC Shares — — 33.7 Legal settlement 70.0 — — Interest (expense) income - net (93.0) (98.0) (87.1) Income before income taxes $ 1,526.2 $ 1,136.1 $ 901.0
Components of Identifiable Assets, Depreciation and Amortization, and Capital Expenditures for Property	The following tables summarize the identifiable assets at September 30, 2021, 2020 and 2019 and the provision for depreciation and amortization and the amount of capital expenditures for property for the years then ended for each of the reportable segments and Corporate, including recast information for fiscal 2020 and 2019 (in millions): 2021 2020 2019 Identifiable assets: Intelligent Devices $ 2,143.3 $ 1,585.0 $ 1,550.0 Software & Control 4,000.4 1,072.7 872.7 Lifecycle Services 2,124.3 1,915.0 1,133.3 Corporate 2,433.6 2,692.0 2,557.0 Total $ 10,701.6 $ 7,264.7 $ 6,113.0 Depreciation and amortization: Intelligent Devices $ 48.6 $ 51.8 $ 56.0 Software & Control 49.1 40.6 42.6 Lifecycle Services 35.3 37.1 34.8 Corporate 1.7 1.8 2.2 Total 134.7 131.3 135.6 Purchase accounting depreciation and amortization 55.1 41.4 16.6 Total $ 189.8 $ 172.7 $ 152.2 Capital expenditures for property: Intelligent Devices $ 52.0 $ 51.3 $ 74.8 Software & Control 30.4 19.3 34.8 Lifecycle Services 19.6 24.9 16.7 Corporate 18.3 18.4 6.5 Total $ 120.3 $ 113.9 $ 132.8
Schedule of Sales and Property by Geographic Region	We conduct a significant portion of our business activities outside the United States. The following tables present sales and property by geographic region (in millions): Sales Property 2021 2020 2019 2021 2020 2019 North America $ 4,132.8 $ 3,760.2 $ 4,014.3 $ 416.1 $ 429.4 $ 443.8 Europe, Middle East and Africa 1,405.7 1,249.3 1,249.8 91.1 81.9 60.5 Asia Pacific 1,012.2 868.7 908.6 54.8 42.8 41.9 Latin America 446.7 451.6 522.1 19.9 20.3 25.7 Total $ 6,997.4 $ 6,329.8 $ 6,694.8 $ 581.9 $ 574.4 $ 571.9

Basis of Presentation and Acc_4

Basis of Presentation and Accounting Policies - Revenue Recognition and Receivables (Narrative) (Details) - USD ($) $ in Millions	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Stockholders' equity, including portion attributable to noncontrolling interest	$ 2,694.1	$ 1,346.8	$ 404.2	$ 1,617.5
Allowances for doubtful accounts	13.2	15.2
Allowance for certain customer returns, rebates and incentives	6.7	8.1
Retained earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Stockholders' equity, including portion attributable to noncontrolling interest	$ 8,000.4	$ 7,139.8	$ 6,440.2	$ 6,198.1

Basis of Presentation and Acc_5

Basis of Presentation and Accounting Policies - Property (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Property, Plant and Equipment [Line Items]
Capital expenditures in accounts payable or other current liabilities at year end	$ 31.5	$ 27.2	$ 26.4
Minimum | Building and Building Improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	5 years
Minimum | Machinery and Equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	3 years
Minimum | Software Development
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	3 years
Maximum | Building and Building Improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	40 years
Maximum | Machinery and Equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	20 years
Maximum | Software Development
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	10 years

Basis of Presentation and Acc_6

Basis of Presentation and Accounting Policies - Intangible Assets (Narrative) (Details)	12 Months Ended
	Sep. 30, 2021
Minimum | Trademarks
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, useful life	3 years
Minimum | Customer relationships
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, useful life	8 years
Minimum | Technology
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, useful life	4 years
Minimum | Other Intangible assets
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, useful life	10 years
Maximum | Trademarks
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, useful life	15 years
Maximum | Customer relationships
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, useful life	20 years
Maximum | Technology
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, useful life	17 years
Maximum | Other Intangible assets
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, useful life	30 years

Basis of Presentation and Acc_7

Basis of Presentation and Accounting Policies - Research and Development Expenses, and Earnings Per Share (Narrative) (Details) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Accounting Policies [Abstract]
Research and development costs	$ 422.5	$ 371.5	$ 378.9
Antidilutive share-based compensation awards (in shares)	0.2	1.6	1.8

Basis of Presentation and Acc_8

Basis of Presentation and Accounting Policies - Reconciliation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Reconciled Basic and Diluted EPS
Net income attributable to Rockwell Automation	$ 1,358.1	$ 1,023.4	$ 695.8
Less: Allocation to participating securities	(2.1)	(1)	(0.7)
Net income available to common shareowners	$ 1,356	$ 1,022.4	$ 695.1
Basic weighted average outstanding shares (in shares)	116	115.8	118.3
Effect of dilutive securities
Diluted weighted average outstanding shares (in shares)	117.1	116.6	119.3
Earnings per share:
Basic (in dollars per share)	$ 11.69	$ 8.83	$ 5.88
Diluted (in dollars per share)	$ 11.58	$ 8.77	$ 5.83
Stock options
Effect of dilutive securities
Stock options (in shares)	1	0.7	0.9
Performance shares
Effect of dilutive securities
Stock options (in shares)	0.1	0.1	0.1

Basis of Presentation and Acc_9

Basis of Presentation and Accounting Policies - Leases (Details)	Sep. 30, 2021	Sep. 30, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Other Liabilities, Current	Other Liabilities, Current
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Long-term Debt and Lease Obligation	Long-term Debt and Lease Obligation
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Other Liabilities, Current	Other Liabilities, Current

Basis of Presentation and Ac_10

Basis of Presentation and Accounting Policies - Recently Issued Accounting Pronouncements (Narrative) (Details) - USD ($) $ in Millions	Oct. 01, 2019	Sep. 30, 2021	Sep. 30, 2020
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease right-of-use assets		$ 377.7	$ 342.9
Total lease liabilities		$ 403.5
Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease right-of-use assets	$ 316
Total lease liabilities	329
Accumulated other comprehensive loss | Accounting Standards Update 2018-07
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification of tax effects from accumulated other comprehensive loss into retained earnings	$ 147

Revenue Recognition - Narrative

Revenue Recognition - Narrative (Details) $ in Millions	12 Months Ended
	Sep. 30, 2021USD ($)segment
Revenue from Contract with Customer [Abstract]
Contract with customer, liability, revenue recognized	$ 256.1
Contract with customer, performance obligation satisfied in previous period	$ 0
Number of operating segments | segment	3

Revenue Recognition - Performan

Revenue Recognition - Performance Obligation (Details) $ in Millions	Sep. 30, 2021USD ($)
Revenue from Contract with Customer [Abstract]
Revenue to be recognized in future periods	$ 655
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-10-01
Revenue from Contract with Customer [Abstract]
Revenue to be recognized in future periods	$ 385
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue to be recognized in future periods, expected timing of satisfaction, period	12 months

Revenue Recognition - Disaggreg

Revenue Recognition - Disaggregation of Revenue by Operating Segment and by Geographic Region (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Disaggregation of Revenue [Line Items]
Sales	$ 6,997.4	$ 6,329.8	$ 6,694.8
North America
Disaggregation of Revenue [Line Items]
Sales	4,132.8	3,760.2	4,014.3
Europe, Middle East and Africa
Disaggregation of Revenue [Line Items]
Sales	1,405.7	1,249.3	1,249.8
Asia Pacific
Disaggregation of Revenue [Line Items]
Sales	1,012.2	868.7	908.6
Latin America
Disaggregation of Revenue [Line Items]
Sales	446.7	451.6	$ 522.1
Intelligent Devices
Disaggregation of Revenue [Line Items]
Sales	3,311.9	2,956
Intelligent Devices | North America
Disaggregation of Revenue [Line Items]
Sales	2,075.4	1,860.1
Intelligent Devices | Europe, Middle East and Africa
Disaggregation of Revenue [Line Items]
Sales	595.9	518.5
Intelligent Devices | Asia Pacific
Disaggregation of Revenue [Line Items]
Sales	432.5	372.6
Intelligent Devices | Latin America
Disaggregation of Revenue [Line Items]
Sales	208.1	204.8
Software & Control
Disaggregation of Revenue [Line Items]
Sales	1,947	1,681.3
Software & Control | North America
Disaggregation of Revenue [Line Items]
Sales	1,186.3	1,027.5
Software & Control | Europe, Middle East and Africa
Disaggregation of Revenue [Line Items]
Sales	375	300.5
Software & Control | Asia Pacific
Disaggregation of Revenue [Line Items]
Sales	273.9	254.1
Software & Control | Latin America
Disaggregation of Revenue [Line Items]
Sales	111.8	99.2
Lifecycle Services
Disaggregation of Revenue [Line Items]
Sales	1,738.5	1,692.5
Lifecycle Services | North America
Disaggregation of Revenue [Line Items]
Sales	871.1	872.6
Lifecycle Services | Europe, Middle East and Africa
Disaggregation of Revenue [Line Items]
Sales	434.8	430.3
Lifecycle Services | Asia Pacific
Disaggregation of Revenue [Line Items]
Sales	305.8	242
Lifecycle Services | Latin America
Disaggregation of Revenue [Line Items]
Sales	$ 126.8	$ 147.6

Revenue Recognition - Contract

Revenue Recognition - Contract Balances (Details) - USD ($) $ in Millions	Sep. 30, 2021	Sep. 30, 2020
Contract With Customer, Liability [Roll Forward]
Balance as of beginning of fiscal year	$ 325.3	$ 275.6
Balance as of end of period	$ 462.5	$ 325.3

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets - Changes in Carrying amount of Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Goodwill
Beginning balance	$ 1,650.3	$ 1,071.1
Acquisition of businesses	1,950.1	551.9
Translation	25.5	27.3
Reallocation due to change in segments	0
Ending balance	3,625.9	1,650.3
Architecture & Software
Goodwill
Beginning balance	609.4	432.3
Acquisition of businesses		161.2
Translation		15.9
Reallocation due to change in segments	(609.4)
Ending balance	0	609.4
Control Products & Solutions
Goodwill
Beginning balance	1,040.9	638.8
Acquisition of businesses		390.7
Translation		11.4
Reallocation due to change in segments	(1,040.9)
Ending balance	0	$ 1,040.9
Intelligent Devices
Goodwill
Translation	8
Reallocation due to change in segments	535.1
Ending balance	543.1
Software & Control
Goodwill
Acquisition of businesses	1,937.3
Translation	12.9
Reallocation due to change in segments	497.3
Ending balance	2,447.5
Lifecycle Services
Goodwill
Acquisition of businesses	12.8
Translation	4.6
Reallocation due to change in segments	617.9
Ending balance	$ 635.3

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets - Narrative (Details)	3 Months Ended	12 Months Ended
	Mar. 31, 2021USD ($)	Sep. 30, 2021USD ($)segment	Sep. 30, 2020USD ($)	Sep. 30, 2019USD ($)
Finite-Lived Intangible Assets [Line Items]
Number of operating segments | segment		3
Goodwill and intangible asset impairment	$ 0
Amortization of intangible assets		$ 65,900,000	$ 50,200,000	$ 26,000,000
Estimated amortization expense in 2022		112,000,000
Estimated amortization expense in 2023		110,600,000
Estimated amortization expense in 2024		107,600,000
Estimated amortization expense in 2025		105,300,000
Estimated amortization expense in 2026		103,700,000
Software products
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets		$ 11,900,000	$ 10,200,000	$ 10,400,000

Goodwill and Other Intangible_5

Goodwill and Other Intangible Assets - Other Intangibles (Details) - USD ($) $ in Millions	Sep. 30, 2021	Sep. 30, 2020
Other intangible assets
Amortized intangible assets, carrying amount	$ 1,188	$ 795.9
Amortized intangible assets, accumulated amortization	209.9	360.3
Amortized intangible assets, net	978.1	435.6
Total other intangible assets, carrying amount	1,231.7	839.6
Total other intangible assets, net	1,021.8	479.3
Software products
Other intangible assets
Amortized intangible assets, carrying amount	90.4	192.7
Amortized intangible assets, accumulated amortization	43.2	139
Amortized intangible assets, net	47.2	53.7
Customer relationships
Other intangible assets
Amortized intangible assets, carrying amount	595.9	351.3
Amortized intangible assets, accumulated amortization	75.4	92.5
Amortized intangible assets, net	520.5	258.8
Technology
Other intangible assets
Amortized intangible assets, carrying amount	420.8	165.8
Amortized intangible assets, accumulated amortization	71.7	84
Amortized intangible assets, net	349.1	81.8
Trademarks
Other intangible assets
Amortized intangible assets, carrying amount	73.8	71.7
Amortized intangible assets, accumulated amortization	13.3	31.3
Amortized intangible assets, net	60.5	40.4
Other
Other intangible assets
Amortized intangible assets, carrying amount	7.1	14.4
Amortized intangible assets, accumulated amortization	6.3	13.5
Amortized intangible assets, net	0.8	0.9
Trademarks
Other intangible assets
Allen-Bradley® trademark not subject to amortization	$ 43.7	$ 43.7

Acquisitions - Schedule of Reco

Acquisitions - Schedule of Recognized Identified Assets Acquired and Liabilities Assumed - Plex (Details) - USD ($) $ in Millions	Aug. 31, 2021	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Business Acquisition [Line Items]
Goodwill		$ 3,625.9	$ 1,650.3	$ 1,071.1
Plex Systems
Business Acquisition [Line Items]
Accounts receivable	$ 14.8
Other assets	28.3
Goodwill	1,725.3
Intangible assets	531.4
Total assets acquired	2,299.8
Less: Contract liabilities	(29.2)
Less: Other liabilities assumed	(31.8)
Less: Deferred income taxes	(33.3)
Net assets acquired	2,205.5
Total purchase consideration, net of cash acquired	$ 2,205.5

Acquisitions - Narrative (Detai

Acquisitions - Narrative (Details) - USD ($) $ in Millions	Aug. 31, 2021	Oct. 01, 2019	Aug. 31, 2021	Jan. 31, 2020	Apr. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Mar. 31, 2021	Sep. 30, 2019
Business Acquisition [Line Items]
Goodwill						$ 3,625.9	$ 1,650.3		$ 1,071.1
Sales							27.9
Pro forma revenue						7,200	6,500
Cash, net of cash acquired		$ 247
Noncontrolling interest portion of Rockwell Automation's contributed business		25.8
Software & Control
Business Acquisition [Line Items]
Goodwill						2,447.5
Plex Systems
Business Acquisition [Line Items]
Acquired finite-lived intangible assets, weighted average useful life			12 years
Customer attrition rate	5.00%
Royalty rate	25.00%
Obsolescence factor phase out period	10 years
Goodwill	$ 1,725.3		$ 1,725.3
Plex Systems | Customer relationships
Business Acquisition [Line Items]
Finite-lived intangible assets acquired	276.4
Plex Systems | Patented Technology
Business Acquisition [Line Items]
Finite-lived intangible assets acquired	232.8
Plex Systems | Trade Names
Business Acquisition [Line Items]
Finite-lived intangible assets acquired	$ 22.2
Oylo And Fiix Inc.
Business Acquisition [Line Items]
Goodwill								$ 224.8
Oylo And Fiix Inc. | Customer Relationships, Technology, and Trade Names
Business Acquisition [Line Items]
Finite-lived intangible assets acquired						$ 69.6
Acquired finite-lived intangible assets, weighted average useful life						11 years
Oylo And Fiix Inc. | Lifecycle Services
Business Acquisition [Line Items]
Goodwill						$ 12.8
Oylo And Fiix Inc. | Software & Control
Business Acquisition [Line Items]
Goodwill						$ 212
Sensia
Business Acquisition [Line Items]
Goodwill		$ 307.4
Pro forma revenue							191
Business acquisition, percentage of voting interests acquired		53.00%
Cash, net of cash acquired		$ 247
Finite-lived intangible assets acquired, discount rate		11.00%
Noncontrolling interest portion of Rockwell Automation's contributed business		$ 293.8
Sensia | Schlumberger
Business Acquisition [Line Items]
Business acquisition, percentage of voting interests acquired		47.00%
Sensia | Minimum
Business Acquisition [Line Items]
Customer attrition rate		7.50%
Sensia | Maximum
Business Acquisition [Line Items]
Customer attrition rate		25.00%
Sensia | Customer Relationships, Technology, and Trade Names
Business Acquisition [Line Items]
Finite-lived intangible assets acquired		$ 254.1
Acquired finite-lived intangible assets, weighted average useful life		11 years
Sensia | Technology and Trademarks | Minimum
Business Acquisition [Line Items]
Acquired finite-lived intangible assets, weighted average useful life		5 years
Sensia | Technology and Trademarks | Maximum
Business Acquisition [Line Items]
Acquired finite-lived intangible assets, weighted average useful life		15 years
Avnet
Business Acquisition [Line Items]
Number of years of experience				20 years
MESTECH, Avnet, ASEM, and Kalypso
Business Acquisition [Line Items]
Sales							41.8
Pro forma revenue							$ 7,000
Business acquisition, goodwill, expected tax deductible amount					$ 69
Contingent consideration					25.8
MESTECH, Avnet, ASEM, and Kalypso | Customer Relationships, Technology, and Trade Names
Business Acquisition [Line Items]
Finite-lived intangible assets acquired					$ 76.5
Acquired finite-lived intangible assets, weighted average useful life					10 years
MESTECH, Avnet, ASEM, and Kalypso | Lifecycle Services
Business Acquisition [Line Items]
Goodwill					$ 83.3
MESTECH, Avnet, ASEM, and Kalypso | Software & Control
Business Acquisition [Line Items]
Goodwill					$ 161.2

Acquisitions - Schedule of Re_2

Acquisitions - Schedule of Recognized Identified Assets Acquired and Liabilities Assumed - Oylo and Fiix Inc. (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Purchase Price Allocation
Goodwill		$ 3,625.9	$ 1,650.3	$ 1,071.1
Oylo And Fiix Inc.
Purchase Price Allocation
Accounts receivable	$ 6
Other assets	15.9
Goodwill	224.8
Intangible assets	69.6
Total assets acquired	316.3
Less: Liabilities assumed	(25.5)
Less: Deferred income taxes	(3.7)
Net assets acquired	287.1
Purchase Consideration
Total purchase consideration, net of cash acquired	$ 287.1

Acquisitions - Schedule of Re_3

Acquisitions - Schedule of Recognized Identified Assets Acquired and Liabilities Assumed - Sensia (Details) - USD ($) $ in Millions	Oct. 01, 2019	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Business Acquisition [Line Items]
Goodwill		$ 3,625.9	$ 1,650.3	$ 1,071.1
Purchase Consideration
Cash, net of cash acquired	$ 247
Noncontrolling interest portion of Rockwell Automation's contributed business	25.8
Additional paid in capital adjustment	48.1
Other	7
Sensia
Business Acquisition [Line Items]
Accounts receivable	31.2
Inventory	33.2
Other current assets	1.2
Property, plant and equipment	9.3
Other assets	6.2
Goodwill	307.4
Intangible assets	254.1
Total assets acquired	642.6
Less: Liabilities assumed	(18.3)
Less: Deferred income taxes	(2.6)
Less: Noncontrolling interest portion	(293.8)
Total purchase consideration, net of cash acquired	327.9
Purchase Consideration
Cash, net of cash acquired	247
Noncontrolling interest portion of Rockwell Automation's contributed business	293.8
Total purchase consideration, net of cash acquired	327.9
Net assets acquired	$ 327.9

Acquisitions - Schedule of Re_4

Acquisitions - Schedule of Recognized Identified Assets Acquired and Liabilities Assumed - MESTECH, Avent, ASEM, and Kalypso (Details) - USD ($) $ in Millions	7 Months Ended
	Apr. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Business Acquisition [Line Items]
Goodwill		$ 3,625.9	$ 1,650.3	$ 1,071.1
MESTECH, Avent, ASEM, and Kalypso
Business Acquisition [Line Items]
Accounts receivable	$ 33.8
Inventory	9.6
Other current assets	1
Property, plant and equipment	5.9
Other assets	2.2
Goodwill	244.5
Intangible assets	76.5
Total assets acquired	373.5
Less: Liabilities assumed	(28.6)
Less: Deferred income taxes	(14.4)
Less: Noncontrolling interest portion	330.5
Total purchase consideration, net of cash acquired	$ 330.5

Inventories (Details)

Inventories (Details) - USD ($) $ in Millions	Sep. 30, 2021	Sep. 30, 2020
Inventories
Finished goods	$ 287	$ 243
Work in process	229.3	159.1
Raw materials	281.8	181.9
Inventories	$ 798.1	$ 584

Property, net (Details)

Property, net (Details) - USD ($) $ in Millions	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Property, net
Land	$ 4.8	$ 4.8
Buildings and improvements	397.6	383
Machinery and equipment	1,244.3	1,220.7
Internal-use software	522.4	506.4
Construction in progress	156.4	134.4
Total	2,325.5	2,249.3
Less accumulated depreciation	(1,743.6)	(1,674.9)
Property, net	$ 581.9	$ 574.4	$ 571.9

Long-term and Short-term Debt -

Long-term and Short-term Debt - Schedule of Long-term Debt (Details) - USD ($) $ in Millions	Sep. 30, 2021	Sep. 30, 2020
Long-term debt
Unamortized discount, capitalized lease obligations and other	$ (51)	$ (45.4)
Long-term debt	3,464.6	1,974.7
0.35% notes, payable in August 2023
Long-term debt
Debt instruments	$ 600	0
Stated interest rate	0.00003%
2.875% notes, payable in March 2025
Long-term debt
Debt instruments	$ 315.6	320.1
Stated interest rate	0.02875%
6.70% debentures, payable in January 2028
Long-term debt
Debt instruments	$ 250	250
Stated interest rate	0.00067%
3.50% notes, payable in March 2029
Long-term debt
Debt instruments	$ 425	425
Stated interest rate	0.035%
1.75% notes, payable in August 2031
Long-term debt
Debt instruments	$ 450	0
Stated interest rate	0.00018%
6.25% debentures, payable in December 2037
Long-term debt
Debt instruments	$ 250	250
Stated interest rate	0.00063%
4.20% notes, payable in March 2049
Long-term debt
Debt instruments	$ 575	575
Stated interest rate	0.042%
2.80% notes, payable in August 2061
Long-term debt
Debt instruments	$ 450	0
Stated interest rate	0.028%
5.20% debentures, payable in January 2098
Long-term debt
Debt instruments	$ 200	$ 200
Stated interest rate	0.052%

Long-term and Short-term Debt_2

Long-term and Short-term Debt - Narrative (Details)	Aug. 31, 2021USD ($)	Mar. 01, 2019USD ($)	Nov. 13, 2018USD ($)	Sep. 30, 2020USD ($)	Mar. 31, 2019USD ($)	Nov. 12, 2018USD ($)	Sep. 30, 2021USD ($)	Sep. 30, 2020USD ($)	Sep. 30, 2019USD ($)	Apr. 30, 2020USD ($)
Debt Instrument [Line Items]
Short-term debt				$ 24,600,000			$ 509,700,000	$ 24,600,000
Interest payments							$ 91,800,000	101,700,000	$ 97,500,000
0.35% notes, payable in August 2023
Debt Instrument [Line Items]
Stated interest rate							0.00003%
2.80% notes, payable in August 2061
Debt Instrument [Line Items]
Stated interest rate							0.028%
Notes Payable, Other Payables
Debt Instrument [Line Items]
Debt instrument, face amount	$ 1,500,000,000				$ 1,000,000,000
Notes Payable, Other Payables | 0.35% notes, payable in August 2023
Debt Instrument [Line Items]
Debt instrument, face amount	$ 600,000,000
Stated interest rate	0.35%
Notes Payable, Other Payables | 1.750% Notes Due August 2031 [Member]
Debt Instrument [Line Items]
Debt instrument, face amount	$ 450,000,000
Stated interest rate	1.75%
Notes Payable, Other Payables | 2.80% notes, payable in August 2061
Debt Instrument [Line Items]
Debt instrument, face amount	$ 450,000,000
Stated interest rate	2.80%
Notes Payable, Other Payables | 4.200% Notes Due March 2049 [Member]
Debt Instrument [Line Items]
Debt instrument, face amount					$ 575,000,000
Stated interest rate					4.20%
Proceeds from issuance of debt	$ 1,485,600,000				$ 987,600,000
Notes Payable, Other Payables | 3.500% Notes Due March 2029 [Member]
Debt Instrument [Line Items]
Debt instrument, face amount					$ 425,000,000
Stated interest rate					3.50%
Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Debt instrument, term			5 years			5 years
Line of credit facility, current borrowing capacity			$ 1,250,000,000			$ 1,000,000,000
Borrowing capacity			$ 750,000,000
Line of credit facility, fair value of amount outstanding				0			$ 0	0
Maximum ratio of EBITDA to interest expense under credit facility							3
Treasury locks
Debt Instrument [Line Items]
Derivative, gain (loss) on derivative, net	$ 28,000,000	$ 35,700,000
Commercial Paper
Debt Instrument [Line Items]
Short-term debt				0			$ 484,000,000	0
Debt, weighted average interest rate							18.00%
Interest Bearing Loan
Debt Instrument [Line Items]
Short-term debt				23,500,000			$ 23,500,000	$ 23,500,000
Notes Payable to Banks
Debt Instrument [Line Items]
Debt instrument, face amount										$ 400,000,000
Long-term debt, term										364 days
Repayments of debt				$ 400,000,000

Long-term and Short-term Debt_3

Long-term and Short-term Debt - Schedule of Carrying Amounts and Estimated Fair Values (Details) - USD ($) $ in Millions	Sep. 30, 2021	Sep. 30, 2020
Carrying Value
Long-term debt	$ 3,464.6	$ 1,974.7
Carrying Value
Carrying Value
Long-term debt	3,464.6	1,974.7
Fair Value
Fair Value
Long-term debt	$ 3,874.8	$ 2,497.7

Other Current Liabilities (Deta

Other Current Liabilities (Details) - USD ($) $ in Millions	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Other Liabilities Disclosure [Abstract]
Unrealized losses on foreign exchange contracts	$ 16.9	$ 24.3
Product warranty obligations	18	20.8	$ 25.2
Taxes other than income taxes	59.8	58.5
Accrued interest	17.8	14.9
Income taxes payable	188.4	79.8
Operating lease liabilities	89.9	89.7
Other	93.6	88.5
Other current liabilities	$ 484.4	$ 376.5

Product Warranty Obligations (D

Product Warranty Obligations (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Product Warranties Disclosures [Abstract]
Product warranty period	12 months
Changes in product warranty obligations
Beginning balance	$ 20.8	$ 25.2
Warranties recorded at time of sale	17.3	17.8
Adjustments to pre-existing warranties	(6.2)	(1.6)
Settlements of warranty claims	(13.9)	(20.6)
Ending balance	$ 18	$ 20.8

Investments - Schedule of Inves

Investments - Schedule of Investments (Details) - USD ($) $ in Millions	Sep. 30, 2021	Sep. 30, 2020
Investments, Debt and Equity Securities [Abstract]
Fixed income securities	$ 0.6	$ 0.6
Equity securities	1,267.6	875.3
Other	95.9	78.2
Total investments	1,364.1	954.1
Short-term Investments	(0.6)	(0.6)
Long-term investments	$ 1,363.5	$ 953.5

Investments - Narrative (Detail

Investments - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions	May 11, 2021	Sep. 30, 2021	Sep. 30, 2020	Jul. 19, 2018
Debt and Equity Securities, FV-NI [Line Items]
Equity securities		$ 1,267.6	$ 875.3
PTC
Debt and Equity Securities, FV-NI [Line Items]
Number of shares purchased (in shares)				10,582,010
Purchase of stock price (usd per share)				$ 94.50
Consideration paid to purchase stock				$ 1,000
Sale of stock, subsequent trading period	90 days
Sale of stock, trading period, marketed underwritten offerings	1 year
Gain on fair value of PTC shares		$ 392.3	$ 153.9
PTC | Minimum
Debt and Equity Securities, FV-NI [Line Items]
Percentage of total outstanding common stock, that can be traded in future periods	100.00%
Sale of stock, percentage of total outstanding common stock that may be transferred, marketed underwritten offerings	500.00%

Derivative Instruments - Narrat

Derivative Instruments - Narrative (Details) - USD ($)	1 Months Ended	12 Months Ended
	May 31, 2020	Sep. 30, 2021	Feb. 28, 2015
Derivative Instruments, Gain (Loss) [Line Items]
Maximum length of time hedged in cash flow hedge		2 years
Net unrealized gains on cash flow hedges to be reclassified into earnings during the next 12 months		$ 100,000
Forward exchange contracts
Derivative Instruments, Gain (Loss) [Line Items]
U.S. dollar-equivalent gross notional amount		1,811,700,000
Forward exchange contracts | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
U.S. dollar-equivalent gross notional amount		1,011,500,000
Interest rate swap contracts
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, gain on derivative	$ 22,000,000
Aggregate principal amount of notes issued
Derivative Instruments, Gain (Loss) [Line Items]
Debt instrument, face amount			$ 600,000,000
Cash Flow Hedging | Forward exchange contracts
Derivative Instruments, Gain (Loss) [Line Items]
U.S. dollar-equivalent gross notional amount		800,200,000
Net Investment Hedging | Forward exchange contracts
Derivative Instruments, Gain (Loss) [Line Items]
U.S. dollar-equivalent gross notional amount		$ 0

Derivative Instruments - Pre-ta

Derivative Instruments - Pre-tax Amount of Gains (Losses) (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net [Abstract]
Pre-tax amount of (losses) gains reclassified from accumulated other comprehensive income into the Consolidated Statement of Operations related to derivative forward exchange contracts designated as cash flow hedges	$ (24.3)	$ 15.4	$ 16.7
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	(8.3)	(5.7)	1.2
Forward exchange contracts
Unrealized Gain (Loss) On Foreign Currency Derivative Net Before Tax, Amount
Pre-tax (losses) gains recorded in other comprehensive income related to cash flow hedges	(10.8)	(9.7)	29.5
Pre-tax gains (losses) recorded in other comprehensive income related to net investment hedges	(0.8)	(1.3)	(4.9)
Treasury locks
Unrealized Gain (Loss) On Foreign Currency Derivative Net Before Tax, Amount
Pre-tax (losses) gains recorded in other comprehensive income related to cash flow hedges	(28)	0	(35.7)
Sales
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net [Abstract]
Pre-tax amount of (losses) gains reclassified from accumulated other comprehensive income into the Consolidated Statement of Operations related to derivative forward exchange contracts designated as cash flow hedges	1.9	(0.7)	1
Cost of sales
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net [Abstract]
Pre-tax amount of (losses) gains reclassified from accumulated other comprehensive income into the Consolidated Statement of Operations related to derivative forward exchange contracts designated as cash flow hedges	(25.4)	19.6	18.2
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	(0.2)	6.1	(0.4)
Selling, general and administrative expenses
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net [Abstract]
Pre-tax amount of (losses) gains reclassified from accumulated other comprehensive income into the Consolidated Statement of Operations related to derivative forward exchange contracts designated as cash flow hedges	1.5	(1.4)	(1.3)
Interest income
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net [Abstract]
Pre-tax amount of (losses) gains reclassified from accumulated other comprehensive income into the Consolidated Statement of Operations related to derivative forward exchange contracts designated as cash flow hedges	(2.3)	(2.1)	(1.2)
Gain (Loss) on Fair Value Hedges Recognized in Earnings [Abstract]
Pre-tax amount of net gains recognized within the Consolidated Statement of Operations related to derivative instruments designated as fair value hedges, which fully offset the related net gains on the hedged debt instruments	0	15.1	30.9
Other income (expense)
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	$ (8.1)	$ (11.8)	$ 1.6

Derivative Instruments - Schedu

Derivative Instruments - Schedule of Fair Value of Derivatives (Details) - Fair Value (Level 2) - USD ($) $ in Millions	Sep. 30, 2021	Sep. 30, 2020
Assets and liabilities measured at fair value on a recurring basis
Net derivative asset / (liability) designated as hedging instruments	$ 2.1	$ (8.7)
Net derivative asset / (liability) not designated as hedging instruments	(5.1)	(4.8)
Forward exchange contracts | Other current assets
Assets and liabilities measured at fair value on a recurring basis
Forward exchange contracts designated as hedging instruments	7.6	6.9
Forward exchange contracts not designated as hedging instruments, other current assets	4.4	6.1
Forward exchange contracts | Other assets
Assets and liabilities measured at fair value on a recurring basis
Forward exchange contracts designated as hedging instruments	2.1	1
Forward exchange contracts | Other current liabilities
Assets and liabilities measured at fair value on a recurring basis
Forward exchange contracts designated as hedging instruments	(7.4)	(13.4)
Forward exchange contracts not designated as hedging instruments, other current liabilities	(9.5)	(10.9)
Forward exchange contracts | Other liabilities
Assets and liabilities measured at fair value on a recurring basis
Forward exchange contracts designated as hedging instruments	$ (0.2)	$ (3.2)

Shareowners' Equity - Common St

Shareowners' Equity - Common Stock (Details) - USD ($)	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Shareowners' Equity (Textuals) [Abstract]
Common stock, authorized (in shares)	1,000,000,000,000,000,000
Common stock, par value (in dollars per share)	$ 1	$ 1
Preferred stock, authorized (in shares)	25,000,000
Common stock reserved for various incentive plans (in shares)	16,000,000
Outstanding purchase of common stock recorded in accounts payable	$ 1,800,000	$ 0
Changes in outstanding common shares
Beginning balance (in shares)	116,200,000	115,700,000	121,000,000
Treasury stock purchases (in shares)	(1,100,000)	(1,400,000)	(6,100,000)
Common stock issued (including share based compensation impact) (in shares)	900,000	1,900,000	800,000
Ending balance (in shares)	116,000,000	116,200,000	115,700,000

Shareowners' Equity - Schedule

Shareowners' Equity - Schedule of Changes in Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning of period	$ 1,346.8	$ 404.2	$ 1,617.5
Other comprehensive income (loss)	596.4	16.5	(546.1)
End of period	2,694.1	1,346.8	404.2
Total accumulated other comprehensive loss, net of tax
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning of period	(1,614.2)	(1,488)	(941.9)
Other comprehensive income (loss) before reclassifications	441.1	(81.5)	(590.5)
Amounts reclassified from accumulated other comprehensive loss	156	98.3	44.4
Other comprehensive income (loss)	597.1	16.8	(546.1)
End of period	(1,017.1)	(1,614.2)	(1,488)
Pension and other postretirement benefit plan adjustments, net of tax
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning of period	(1,271.2)	(1,133.7)	(658.1)
Other comprehensive income (loss) before reclassifications	438.9	(100.2)	(532.1)
Amounts reclassified from accumulated other comprehensive loss	138.2	109.5	56.5
Other comprehensive income (loss)	577.1	9.3	(475.6)
End of period	(694.1)	(1,271.2)	(1,133.7)
Accumulated currency translation adjustments, net of tax
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning of period	(311.5)	(341.3)	(286)
Other comprehensive income (loss) before reclassifications	31.4	26	(55.3)
Other comprehensive income (loss)	31.4	26	(55.3)
End of period	(280.1)	(311.5)	(341.3)
Accumulated gain (loss), net, cash flow hedge, parent
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning of period	(31.5)	(13)	4.4
Other comprehensive income (loss) before reclassifications	(29.2)	(7.3)	(5.3)
Amounts reclassified from accumulated other comprehensive loss	17.8	(11.2)	(12.1)
Other comprehensive income (loss)	(11.4)	(18.5)	(17.4)
End of period	(42.9)	(31.5)	(13)
Net unrealized gains (losses) on available-for-sale investments, net of tax
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning of period	0	0	(2.2)
Other comprehensive income (loss) before reclassifications		0	2.2
Other comprehensive income (loss)	0	0	2.2
End of period	$ 0	0	0
Cumulative Effect, Period of Adoption, Adjustment [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning of period		2.2	6.1
End of period			2.2
Cumulative Effect, Period of Adoption, Adjustment [Member] | Total accumulated other comprehensive loss, net of tax
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning of period		(146.8)
End of period			(146.8)
Cumulative Effect, Period of Adoption, Adjustment [Member] | Pension and other postretirement benefit plan adjustments, net of tax
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning of period		(146.8)
End of period			(146.8)
Cumulative Effect, Period of Adoption, Adjustment [Member] | Accumulated currency translation adjustments, net of tax
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning of period		3.8
End of period			3.8
Cumulative Effect, Period of Adoption, Adjustment [Member] | Total accumulated other comprehensive loss, including non-controlling interest, net of tax
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning of period		$ (143)
End of period			$ (143)

Shareowners' Equity - Schedul_2

Shareowners' Equity - Schedule of Reclassifications Out of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other income (expense)	$ (5.7)	$ 29.7	$ (6.1)
Sales	6,997.4	6,329.8	6,694.8
Cost of sales	(4,099.7)	(3,734.6)	(3,794.7)
Selling, general and administrative expenses	(1,680)	(1,479.8)	(1,538.5)
Interest expense	(94.6)	(103.5)	(98.2)
Income before income taxes	1,526.2	1,136.1	901
Income tax provision	(181.9)	(112.9)	(205.2)
Net income	1,358.1	1,023.4	695.8
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income	156	98.3	44.4
Amortization of prior service credit | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other income (expense)	(4)	(4.5)	(4.2)
Amortization of net actuarial loss | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other income (expense)	142.5	148.7	78.7
Settlements | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other income (expense)	39.8	0	1.2
Pension and other postretirement benefit plan adjustments, net of tax | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income before income taxes	178.3	144.2	75.7
Income tax provision	(40.1)	(34.7)	(19.2)
Net income	138.2	109.5	56.5
Accumulated gain (loss), net, cash flow hedge, parent | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Sales	(1.9)	0.7	(1)
Cost of sales	25.4	(19.6)	(18.2)
Selling, general and administrative expenses	(1.5)	1.4	1.3
Interest expense	2.3	2.1	1.2
Income before income taxes	24.3	(15.4)	(16.7)
Income tax provision	(6.5)	4.2	4.6
Net income	$ 17.8	$ (11.2)	$ (12.1)

Share-Based Compensation - Narr

Share-Based Compensation - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract]
Pre-tax share-based compensation expense	$ 51.7	$ 46.1	$ 43.1
Income tax benefit related to share-based compensation expense	8.6	$ 7.7	$ 6.9
Unrecognized compensation cost related to share-based compensation awards, net of estimated forfeitures	$ 69
Weighted average period for recognition of total unrecognized compensation cost	2 years
Stock options
Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract]
Expiration period	10 years
Vesting period	3 years
Per share weighted average fair value of stock options granted (in dollars per share)	$ 55.50	$ 35.80	$ 32.46
Total intrinsic value of stock options exercised	$ 108.4	$ 151.6	$ 35.8
Performance shares
Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract]
Vesting period	3 years
Percent payout	93.00%	77.00%	200.00%
Payout percentage in December 2020 for performance period ending September 30, 2020	144.00%
Maximum potential shares to be delivered in payment under performance share awards (in shares)	68,000
Weighted average grant date fair value of awards granted (in dollars per share)	$ 298.10	$ 265.04	$ 155.04
Total fair value of shares vested	$ 7.4	$ 5.6	$ 25.8
Shares granted in the period (in shares)	44,000
Performance shares | Minimum
Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract]
Percent payout	50.00%	0.00%	0.00%
Performance shares | Maximum
Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract]
Percent payout	200.00%	200.00%	200.00%
Restricted stock and restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract]
Weighted average grant date fair value of awards granted (in dollars per share)	$ 265.32	$ 200.36	$ 170.75
Total fair value of shares vested	$ 10.4	$ 8.7	$ 7.8
Shares granted in the period (in shares)	254,000
Restricted stock and restricted stock units | Minimum
Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract]
Vesting period	1 year
Restricted stock and restricted stock units | Maximum
Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract]
Vesting period	5 years
Unrestricted stock
Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract]
Weighted average grant date fair value of awards granted (in dollars per share)	$ 228.80	$ 171.51	$ 182.39
Shares granted in the period (in shares)	5,600
2020 Long Term Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract]
Shares authorized (up to) (in shares)		13,000,000
Shares available for grant (in shares)	11,400,000
2003 Directors Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract]
Shares authorized (up to) (in shares)		500,000

Share-Based Compensation - Sche

Share-Based Compensation - Schedule of Fair Value Assumptions (Details)	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Stock options
Fair value assumptions for share-based compensation awards
Average risk-free interest rate	0.38%	1.63%	2.79%
Expected dividend yield	1.73%	2.08%	2.27%
Expected volatility	31.00%	24.00%	23.00%
Expected term (years)	4 years 10 months 24 days	4 years 10 months 24 days	5 years
Performance shares
Fair value assumptions for share-based compensation awards
Average risk-free interest rate	0.19%	1.58%	2.77%
Expected dividend yield	1.73%	2.06%	2.24%
Expected volatility	37.00%	25.00%	23.00%

Share-Based Compensation - Summ

Share-Based Compensation - Summary of Stock Option Activity (Details) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Sep. 30, 2021USD ($)$ / sharesshares
Shares (in thousands)
Outstanding at beginning of period (in shares) | shares	3,404
Granted (in shares) | shares	196
Exercised (in shares) | shares	(985)
Forfeited (in shares) | shares	(118)
Canceled (in shares) | shares	(1)
Outstanding at end of period (in shares) | shares	2,496
Exercisable (in shares) | shares	1,470
Wtd. Avg. Exercise Price
Outstanding at beginning of period (in dollars per share) | $ / shares	$ 164.81
Granted (in dollars per share) | $ / shares	246.87
Exercised (in dollars per share) | $ / shares	156.98
Forfeited (in dollars per share) | $ / shares	191.64
Canceled (in dollars per share) | $ / shares	191.15
Outstanding at end of period (in dollars per share) | $ / shares	173.07
Exercisable (in dollars per share) | $ / shares	$ 155.05
Wtd. Avg. Remaining Contractual Term (years)
Outstanding at end of period	6 years 7 months 6 days
Exercisable	5 years 7 months 6 days
Aggregate Intrinsic Value of In-The-Money Options (in millions)
Outstanding at end of period | $	$ 302
Exercisable | $	$ 204.3

Share-Based Compensation - Su_2

Share-Based Compensation - Summary of Performance Share and Restricted Stock Unit Activity (Details) - $ / shares shares in Thousands	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Performance shares
Performance Shares (in thousands)
Outstanding at beginning of period (in shares)	124
Granted (in shares)	44
Adjustment for performance results achieved (in shares)	(2)
Vested and issued (in shares)	(31)	(28)	(145)
Forfeited (in shares)	(16)
Outstanding at end of period (in shares)	119	124
Wtd. Avg. Grant Date Share Fair Value
Outstanding at beginning of period (in dollars per share)	$ 204.92
Granted (in dollars per share)	298.10	$ 265.04	$ 155.04
Adjustment for performance results achieved (in dollars per share)	219.04
Vested and issued (in dollars per share)	219.04
Forfeited (in dollars per share)	217.93
Outstanding at end of period (in dollars per share)	$ 232.94	$ 204.92
Vesting period	3 years
Restricted stock and restricted stock units
Performance Shares (in thousands)
Outstanding at beginning of period (in shares)	163
Granted (in shares)	254
Vested and issued (in shares)	(42)
Forfeited (in shares)	(24)
Outstanding at end of period (in shares)	351	163
Wtd. Avg. Grant Date Share Fair Value
Outstanding at beginning of period (in dollars per share)	$ 182.66
Granted (in dollars per share)	265.32	$ 200.36	$ 170.75
Vested and issued (in dollars per share)	188.87
Forfeited (in dollars per share)	205.15
Outstanding at end of period (in dollars per share)	$ 239.89	$ 182.66

Share-Based Compensation - Sc_2

Share-Based Compensation - Schedule of Performance Shares Vested (Details) - Performance shares - USD ($) shares in Thousands, $ in Millions	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percent payout	93.00%	77.00%	200.00%
Shares vested (in thousands) (in shares)	31	28	145
Vested shares, Total Fair Value	$ 7.4	$ 5.6	$ 25.8

Retirement Benefits - Narrative

Retirement Benefits - Narrative (Details) - USD ($)	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Defined Benefit Plan Disclosure [Line Items]
Expense related to defined contribution savings plans	$ 58,500,000	$ 50,900,000	$ 53,100,000
Defined benefit plan, percentage of benefit obligation relating to domestic plan	75.00%
Recognized prior service credits	$ 35,800,000
Recognized prior service credits, net of tax	29,900,000
Recognized net actuarial losses	142,500,000
Recognized net actuarial losses, net of tax	108,300,000
Accumulated benefit obligation for pension plans	4,393,000,000	4,638,100,000
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Voluntary contribution to U.S. qualified pension plan	34,900,000	84,100,000
Recognized prior service credits	1,400,000	900,000	1,200,000
Recognized net actuarial losses	141,400,000	147,300,000	77,800,000
Estimated future payments, during next fiscal year	57,400,000
Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Voluntary contribution to U.S. qualified pension plan	5,700,000	4,800,000
Recognized prior service credits	(5,400,000)	(5,400,000)	(5,400,000)
Recognized net actuarial losses	1,100,000	$ 1,400,000	$ 900,000
Estimated future payments, during next fiscal year	$ 5,800,000
Minimum
Defined Benefit Plan Disclosure [Line Items]
Company contribution to defined contribution plan (percentage)	3.00%
Maximum
Defined Benefit Plan Disclosure [Line Items]
Company contribution to defined contribution plan (percentage)	7.00%
U.S. Plans | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Discount rate	3.10%	2.90%	3.30%
U.S. Plans | Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Discount rate	2.50%	2.15%
Non-U.S. Plans | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Discount rate	2.03%	1.56%
Non-U.S. Plans | Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Discount rate	2.90%	2.20%
Qualified Plan | U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Voluntary contribution to U.S. qualified pension plan	$ 0	$ 50,000,000	$ 0

Retirement Benefits - Schedule

Retirement Benefits - Schedule of Components of Net Periodic Benefit Cost (Income) (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Amortization:
Prior service cost (credit)	$ 35.8
Net actuarial loss	142.5
Pension Benefits
Components of net periodic benefit cost
Service cost	90.1	$ 91.1	$ 78.2
Interest cost	125.6	136.4	158.3
Expected return on plan assets	(241.3)	(244.8)	(244.7)
Amortization:
Prior service cost (credit)	1.4	0.9	1.2
Net actuarial loss	141.4	147.3	77.8
Settlements	39.8	0	1.2
Net periodic benefit cost (income)	157	130.9	72
Other Postretirement Benefits
Components of net periodic benefit cost
Service cost	1.2	1	0.9
Interest cost	1.2	1.6	2.3
Expected return on plan assets	0	0	0
Amortization:
Prior service cost (credit)	(5.4)	(5.4)	(5.4)
Net actuarial loss	1.1	1.4	0.9
Settlements	0	0	0
Net periodic benefit cost (income)	$ (1.9)	$ (1.4)	$ (1.3)

Retirement Benefits - Schedul_2

Retirement Benefits - Schedule of Significant Assumptions Used in Determining Net Periodic Benefit Cost (Income) and Benefit Obligations (Details)	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
U.S. Plans | Pension Benefits
Net periodic benefit cost assumptions
Discount rate	2.90%	3.30%	4.35%
Expected return on plan assets	7.25%	7.50%	7.50%
Compensation increase rate	3.40%	3.40%	3.50%
U.S. Plans | Other Postretirement Benefits
Net periodic benefit cost assumptions
Discount rate	2.15%	2.90%	4.15%
Expected return on plan assets	0.00%	0.00%	0.00%
Compensation increase rate	0.00%	0.00%	0.00%
Non-U.S. Plans | Pension Benefits
Net periodic benefit cost assumptions
Discount rate	1.56%	1.60%	2.48%
Expected return on plan assets	4.68%	5.11%	5.22%
Compensation increase rate	2.90%	3.06%	3.02%
Non-U.S. Plans | Other Postretirement Benefits
Net periodic benefit cost assumptions
Discount rate	2.20%	2.65%	3.30%
Expected return on plan assets	0.00%	0.00%	0.00%
Compensation increase rate	0.00%	0.00%	0.00%

Retirement Benefits - Schedul_3

Retirement Benefits - Schedule of Net Funded Status (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Plan assets at beginning of year	$ 3,838
Plan assets at end of year	4,192.2	$ 3,838
Net amount on balance sheet consists of:
Retirement benefits	(720.6)	(1,284)
Pension Benefits
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation at beginning of year	5,026.9	4,907.3
Service cost	90.1	91.1	$ 78.2
Interest cost	125.6	136.4	158.3
Actuarial (gains) losses	(162.6)	154.1
Acquisitions	0	(0.6)
Plan amendments	0.1	0
Plan participant contributions	2.8	3.1
Benefits paid	(156.9)	(285)
Settlements	(219.3)	(10.5)
Currency translation and other	45.1	31
Benefit obligation at end of year	4,751.8	5,026.9	4,907.3
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Plan assets at beginning of year	3,838	3,753.1
Actual return on plan assets	653.7	266
Company contributions	34.9	84.1
Plan participant contributions	2.8	3.1
Benefits paid	(156.9)	(285)
Settlements	(219.3)	(10.5)
Currency translation and other	39	27.2
Plan assets at end of year	4,192.2	3,838	3,753.1
Funded status of plans	(559.6)	(1,188.9)
Net amount on balance sheet consists of:
Other assets	118.5	27.9
Compensation and benefits	(37)	(13.9)
Retirement benefits	(641.1)	(1,202.9)
Net amount on balance sheet	(559.6)	(1,188.9)
Other Postretirement Benefits
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation at beginning of year	57	60.7
Service cost	1.2	1	0.9
Interest cost	1.2	1.6	2.3
Actuarial (gains) losses	(4.9)	(1.4)
Acquisitions	0	0
Plan amendments	0	0
Plan participant contributions	3.1	3
Benefits paid	(8.8)	(7.8)
Settlements	0	0
Currency translation and other	2.7	(0.1)
Benefit obligation at end of year	51.5	57	60.7
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Plan assets at beginning of year	0	0
Actual return on plan assets	0	0
Company contributions	5.7	4.8
Plan participant contributions	3.1	3
Benefits paid	(8.8)	(7.8)
Settlements	0	0
Currency translation and other	0	0
Plan assets at end of year	0	0	$ 0
Funded status of plans	(51.5)	(57)
Net amount on balance sheet consists of:
Other assets	0	0
Compensation and benefits	(5.7)	(5.8)
Retirement benefits	(45.8)	(51.2)
Net amount on balance sheet	$ (51.5)	$ (57)

Retirement Benefits - Schedul_4

Retirement Benefits - Schedule of Amounts Included in Accumulated Other Comprehensive Loss, Net of Tax (Details) - USD ($) $ in Millions	Sep. 30, 2021	Sep. 30, 2020
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Prior service (credit) cost	$ (30.7)	$ 3.3
Net actuarial loss	718.7	1,262.1
Total	688	1,265.4
Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Prior service (credit) cost	4.1	0
Net actuarial loss	2	5.8
Total	$ 6.1	$ 5.8

Retirement Benefits - Schedul_5

Retirement Benefits - Schedule of Accumulated and Project Benefit Obligations (Details) - USD ($) $ in Millions	Sep. 30, 2021	Sep. 30, 2020
Defined Benefit Plan, Pension Plan with Project Benefit Obligation in Excess of Plan Assets [Abstract]
Projected benefit obligation	$ 4,210.5	$ 4,482
Fair value of plan assets	3,532.4	3,265.2
Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets [Abstract]
Accumulated benefit obligation	3,510.7	4,113.4
Fair value of plan assets	$ 3,156.7	$ 3,265.2

Retirement Benefits - Schedul_6

Retirement Benefits - Schedule of Significant Assumptions Used in Determining Benefit Obligations (Details)	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Expected gross health care cost trend rate	5.00%
Pension Benefits | U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Discount rate	3.10%	2.90%	3.30%
Compensation increase rate	3.40%	3.40%
Health care cost trend rate	0.00%	0.00%
Pension Benefits | Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Discount rate	2.03%	1.56%
Compensation increase rate	3.00%	2.90%
Health care cost trend rate	0.00%	0.00%
Other Postretirement Benefits | U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Discount rate	2.50%	2.15%
Compensation increase rate	0.00%	0.00%
Health care cost trend rate	6.00%	6.25%
Expected gross health care cost trend rate	0.00%
Other Postretirement Benefits | Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Discount rate	2.90%	2.20%
Compensation increase rate	0.00%	0.00%
Health care cost trend rate	4.50%	4.50%

Retirement Benefits - Schedul_7

Retirement Benefits - Schedule of Expected Benefit Payments (Details) $ in Millions	Sep. 30, 2021USD ($)
Pension Benefits
Estimated future benefit payments
2022	$ 327.5
2023	284.4
2024	289
2025	288.8
2026	289.9
2027-2031	1,420.8
Other Postretirement Benefits
Estimated future benefit payments
2022	5.8
2023	5.5
2024	5.1
2025	4.8
2026	4.5
2027-2031	$ 17.4

Retirement Benefits - Schedul_8

Retirement Benefits - Schedule of Weighted Average Allocation Of Plan Assets (Details)	Sep. 30, 2021	Sep. 30, 2020
Equity securities
Asset Allocation
Target Allocations	50.00%
As of the balance sheet date	56.00%	50.00%
Debt securities
Asset Allocation
Target Allocations	43.00%
As of the balance sheet date	38.00%	43.00%
Other
Asset Allocation
Target Allocations	7.00%
As of the balance sheet date	6.00%	7.00%
Minimum | Equity securities
Asset Allocation
Target Allocations	40.00%
Minimum | Debt securities
Asset Allocation
Target Allocations	30.00%
Minimum | Other
Asset Allocation
Target Allocations	0.00%
Maximum | Equity securities
Asset Allocation
Target Allocations	65.00%
Maximum | Debt securities
Asset Allocation
Target Allocations	50.00%
Maximum | Other
Asset Allocation
Target Allocations	15.00%

Retirement Benefits - Schedul_9

Retirement Benefits - Schedule of Allocation of Plan Assets (Details) - USD ($) $ in Millions	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	$ 4,192.2	$ 3,838
Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	111.8	115.7	$ 100.8
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	3,047.3	2,817.8
U.S. Plans | Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	3,017	2,775.9
U.S. Plans | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	1,542.5	1,306.2
U.S. Plans | Fair Value (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	1,473.6	1,468.8
U.S. Plans | Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	0.9	0.9
U.S. Plans | Cash and cash equivalents | Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	3.5	1.4
U.S. Plans | Cash and cash equivalents | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	3.5	1.4
U.S. Plans | Cash and cash equivalents | Fair Value (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	0	0
U.S. Plans | Cash and cash equivalents | Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	0	0
U.S. Plans | Mutual funds | Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	88.7	112.4
U.S. Plans | Mutual funds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	88.7	112.4
U.S. Plans | Mutual funds | Fair Value (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	0	0
U.S. Plans | Mutual funds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	0	0
U.S. Plans | Common stock | Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	1,159.8	947.7
U.S. Plans | Common stock | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	1,159.8	947.7
U.S. Plans | Common stock | Fair Value (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	0	0
U.S. Plans | Common stock | Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	0	0
U.S. Plans | Common collective trusts | Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	609.2	467.4
U.S. Plans | Common collective trusts | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	0	0
U.S. Plans | Common collective trusts | Fair Value (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	609.2	467.4
U.S. Plans | Common collective trusts | Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	0	0
U.S. Plans | Corporate debt | Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	678.2	699.3
U.S. Plans | Corporate debt | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	0	0
U.S. Plans | Corporate debt | Fair Value (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	678.2	699.3
U.S. Plans | Corporate debt | Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	0	0
U.S. Plans | Government securities | Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	357	377.8
U.S. Plans | Government securities | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	290.5	244.7
U.S. Plans | Government securities | Fair Value (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	66.5	133.1
U.S. Plans | Government securities | Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	0	0
U.S. Plans | Common collective trusts | Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	119.7	169
U.S. Plans | Common collective trusts | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	0	0
U.S. Plans | Common collective trusts | Fair Value (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	119.7	169
U.S. Plans | Common collective trusts | Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	0	0
U.S. Plans | Insurance contracts | Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	0.9	0.9
U.S. Plans | Insurance contracts | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	0	0
U.S. Plans | Insurance contracts | Fair Value (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	0	0
U.S. Plans | Insurance contracts | Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	0.9	0.9	0.9
U.S. Plans | Private equity | Fair Value Measured at Net Asset Value Per Share
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	30.3	23.5
U.S. Plans | Alternative equity | Fair Value Measured at Net Asset Value Per Share
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	0	18.4
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	1,144.9	1,020.2
Non-U.S. Plans | Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	1,128.8	1,004.9
Non-U.S. Plans | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	180.2	65.4
Non-U.S. Plans | Fair Value (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	837.7	824.7
Non-U.S. Plans | Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	110.9	114.8
Non-U.S. Plans | Cash and cash equivalents | Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	8.5	1.9
Non-U.S. Plans | Cash and cash equivalents | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	8.5	1.9
Non-U.S. Plans | Cash and cash equivalents | Fair Value (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	0	0
Non-U.S. Plans | Cash and cash equivalents | Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	0	0
Non-U.S. Plans | Common stock | Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	170.3	62.4
Non-U.S. Plans | Common stock | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	170.3	62.4
Non-U.S. Plans | Common stock | Fair Value (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	0	0
Non-U.S. Plans | Common stock | Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	0	0
Non-U.S. Plans | Common collective trusts | Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	334.9	329.3
Non-U.S. Plans | Common collective trusts | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	0	0
Non-U.S. Plans | Common collective trusts | Fair Value (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	334.9	329.3
Non-U.S. Plans | Common collective trusts | Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	0	0
Non-U.S. Plans | Corporate debt | Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	64.7	65.6
Non-U.S. Plans | Corporate debt | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	0	0
Non-U.S. Plans | Corporate debt | Fair Value (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	64.7	65.6
Non-U.S. Plans | Corporate debt | Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	0	0
Non-U.S. Plans | Government securities | Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	1.4	1.1
Non-U.S. Plans | Government securities | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	1.4	1.1
Non-U.S. Plans | Government securities | Fair Value (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	0	0
Non-U.S. Plans | Government securities | Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	0	0
Non-U.S. Plans | Common collective trusts | Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	357	350.9
Non-U.S. Plans | Common collective trusts | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	0	0
Non-U.S. Plans | Common collective trusts | Fair Value (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	357	350.9
Non-U.S. Plans | Common collective trusts | Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	0	0
Non-U.S. Plans | Real estate funds | Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	81.1	78.9
Non-U.S. Plans | Real estate funds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	0	0
Non-U.S. Plans | Real estate funds | Fair Value (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	81.1	78.9
Non-U.S. Plans | Real estate funds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	0	0
Non-U.S. Plans | Real estate funds | Fair Value Measured at Net Asset Value Per Share
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	16.1	15.3
Non-U.S. Plans | Insurance contracts | Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	106.2	110.2
Non-U.S. Plans | Insurance contracts | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	0	0
Non-U.S. Plans | Insurance contracts | Fair Value (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	0	0
Non-U.S. Plans | Insurance contracts | Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	106.2	110.2	95.4
Non-U.S. Plans | Other | Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	4.7	4.6
Non-U.S. Plans | Other | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	0	0
Non-U.S. Plans | Other | Fair Value (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	0	0
Non-U.S. Plans | Other | Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets	$ 4.7	$ 4.6	$ 4.5

Retirement Benefits - Defined B

Retirement Benefits - Defined Benefit Plan Change in Fair Value of Plan Assets Level Three (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Plan assets at beginning of year	$ 3,838
Plan assets at end of year	4,192.2	$ 3,838
Level 3
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Plan assets at beginning of year	115.7	100.8
Realized Gains (Losses)	0	0
Unrealized Gains (Losses)	(5.6)	13.1
Purchases, Sales, Issuances, and Settlements, Net	1.7	1.8
Plan assets at end of year	111.8	115.7
U.S. Plans
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Plan assets at beginning of year	2,817.8
Plan assets at end of year	3,047.3	2,817.8
U.S. Plans | Level 3
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Plan assets at beginning of year	0.9
Plan assets at end of year	0.9	0.9
U.S. Plans | Level 3 | Insurance contracts
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Plan assets at beginning of year	0.9	0.9
Realized Gains (Losses)	0	0
Unrealized Gains (Losses)	0	0
Purchases, Sales, Issuances, and Settlements, Net	0	0
Plan assets at end of year	0.9	0.9
Non-U.S. Plans
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Plan assets at beginning of year	1,020.2
Plan assets at end of year	1,144.9	1,020.2
Non-U.S. Plans | Level 3
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Plan assets at beginning of year	114.8
Plan assets at end of year	110.9	114.8
Non-U.S. Plans | Level 3 | Insurance contracts
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Plan assets at beginning of year	110.2	95.4
Realized Gains (Losses)	0	0
Unrealized Gains (Losses)	(5.7)	13
Purchases, Sales, Issuances, and Settlements, Net	1.7	1.8
Plan assets at end of year	106.2	110.2
Non-U.S. Plans | Level 3 | Other
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Plan assets at beginning of year	4.6	4.5
Realized Gains (Losses)	0	0
Unrealized Gains (Losses)	0.1	0.1
Purchases, Sales, Issuances, and Settlements, Net	0	0
Plan assets at end of year	$ 4.7	$ 4.6

Other Income (Expense) (Details

Other Income (Expense) (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Components of other income (expense)
Interest income	$ 1.6	$ 5.5	$ 11.1
Royalty income	10.2	8.9	10.2
Legacy product liability and environmental charges	(10.6)	(14.5)	(22.1)
Non-operating pension and postretirement benefit (cost) credit	(63.8)	(37.4)	8.4
Legal Settlement (Note 17)	70	0	0
Other	(1.7)	7.8	(1.5)
Other income (expense)	$ 5.7	$ (29.7)	$ 6.1

Income Taxes - Schedule of Inco

Income Taxes - Schedule of Income Tax Data (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Components of income before income taxes:
United States	$ 885.1	$ 556.2	$ 280.8
Non-United States	641.1	579.9	620.2
Income before income taxes	1,526.2	1,136.1	901
Components of the income tax provision:
United States	149.6	68.1	105.6
Non-United States	190.7	96.6	112.1
State and local	25.7	13.9	16.5
Total current	366	178.6	234.2
Deferred:
United States	(154.7)	(32.8)	(27)
Non-United States	(19)	(24.7)	(0.1)
State and local	(10.4)	(8.2)	(1.9)
Total deferred	(184.1)	(65.7)	(29)
Income tax provision	181.9	112.9	205.2
Total income taxes paid	$ 329.3	$ 187.9	$ 293.3

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2018
Income Tax Disclosure [Abstract]
Tax benefit attributable to non-U.S. government sponsored tax incentive programs	$ 61.2	$ 59.1	$ 55.1
Tax benefit per diluted share attributable to non-U.S. government sponsored tax incentive programs (in usd per share)	$ 0.52	$ 0.51	$ 0.46
Gross unrecognized tax benefits	$ 4.3	$ 25.5	$ 19.9	$ 20.1
Accrued interest and penalties for unrecognized tax benefits	1.5	4
Benefits (expense) recognized for interest and penalties related to unrecognized tax benefits	2.5	(0.7)	$ (0.8)
Reasonably possible amount of reduction of gross unrecognized tax benefit in the next twelve months	4.2
Reasonably possible amount of net reduction to income tax provision in the next twelve months if unrecognized tax benefits were recognized, including the recognition of interest and penalties and offsetting tax assets	5.7
Transition tax expense (benefit)	$ 264.8	$ 296

Income Taxes - Schedule of Effe

Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details) - USD ($)	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Effective Tax Rate Reconciliation
Statutory tax rate	21.00%	21.00%	21.00%
State and local income taxes	1.40%	0.80%	0.10%
Non-United States taxes	(3.80%)	(5.00%)	(4.80%)
Repatriation of foreign earnings	0.90%	1.30%	2.80%
Foreign-derived intangible income	(2.80%)	(1.00%)	(1.60%)
Settlements with taxing authorities	(1.00%)	(0.20%)	0.00%
Sensia formation	0.10%	(1.10%)	0.00%
Change in valuation allowance	(1.70%)	(2.70%)	7.60%
Share-based compensation	(1.10%)	(1.90%)	(0.90%)
Research and development tax credit	(0.60%)	(1.10%)	(1.20%)
Other	(0.50%)	(0.20%)	(0.20%)
Effective income tax rate	11.90%	9.90%	22.80%
Effective income tax rate reconciliation, change in deferred tax assets valuation allowance, amount	$ 0

Income Taxes - Schedule of Defe

Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Sep. 30, 2021	Sep. 30, 2020
Deferred income tax assets:
Compensation and benefits	$ 41.7	$ 6
Inventory	12.8	10.5
Returns, rebates and incentives	37.5	34.5
Retirement benefits	153.1	306.8
Environmental remediation and other site-related costs	22.8	23.8
Share-based compensation	18.5	18.6
Other accruals and reserves	250.2	68.4
Investments	0	31.6
Net operating loss carryforwards	130.4	31.1
Tax credit carryforwards	20.3	17.3
Capital loss carryforwards	15.3	10.8
Other	23.7	16.8
Subtotal	726.3	576.2
Valuation allowance	(32.6)	(58)
Net deferred income tax assets	693.7	518.2
Deferred income tax liabilities:
Property	(43.7)	(48)
Intangible assets	(160.5)	(25.3)
Investments	(64.3)	0
Unremitted earnings of foreign subsidiaries	(42)	(28.3)
Other	(2.3)	(1)
Deferred income tax liabilities	(312.8)	(102.6)
Total net deferred income tax assets	$ 380.9	$ 415.6

Income Taxes - Schedule of Tax

Income Taxes - Schedule of Tax Attributes and Valuation Allowances (Details) - USD ($) $ in Millions	Sep. 30, 2021	Sep. 30, 2020
Tax Benefit Amount
Non-United States capital loss carryforward	$ 15.3	$ 10.8
Net operating loss carryforwards	130.4	31.1
State tax credit carryforward	20.3	$ 17.3
Subtotal	166
Other deferred tax assets	5.5
Total	171.5
Valuation Allowance
Tax credit carryforward	5.5
Subtotal	27.1
Total	32.6
Non-United States
Tax Benefit Amount
Net operating loss carryforward, subject to expiration	6.6
Net operating loss carryforward, not subject to expiration	36.5
Non-United States capital loss carryforward	15.3
Valuation Allowance
Net operating loss carryforward, subject to expiration	6.2
Net operating loss carryforward, not subject to expiration	3.2
Non-United States capital loss carryforward	15.3
United States
Tax Benefit Amount
Net operating loss carryforward, subject to expiration	19.4
Net operating loss carryforward, not subject to expiration	50.7
State tax credit carryforward	9.4
Valuation Allowance
Net operating loss carryforward, subject to expiration	0
Net operating loss carryforward, not subject to expiration	0
Tax credit carryforward	1.2
State and Local
Tax Benefit Amount
Net operating loss carryforwards	17.2
State tax credit carryforward	10.9
Valuation Allowance
Net operating loss carryforward, subject to expiration	1.2
Tax credit carryforward	$ 0

Income Taxes - Schedule of Gros

Income Taxes - Schedule of Gross Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Unrecognized tax benefits, excluding interest and penalties
Gross unrecognized tax benefits balance at beginning of year	$ 25.5	$ 19.9	$ 20.1
Additions based on tax positions related to the current year	0.1	0	0
Additions based on tax positions related to prior years	0.4	5.6	0
Reductions based on tax positions related to prior years	0	0	0
Reductions related to settlements with taxing authorities	(18.1)	0	0
Reductions related to lapses of statute of limitations	(3.6)	0	(0.2)
Effect of foreign currency translation	0	0	0
Gross unrecognized tax benefits balance at end of year	$ 4.3	$ 25.5	$ 19.9

Commitments and Contingent Li_2

Commitments and Contingent Liabilities - Narrative (Details) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2020USD ($)	Sep. 30, 2021USD ($)site	Sep. 30, 2020USD ($)
Commitments and Contingencies Disclosure [Abstract]
Number of Superfund sites designated potentially responsible party at | site		14
Accrual for environmental loss contingencies, net of related receivables		$ 53.6	$ 59.2
Asset retirement obligation, net of recoveries		$ 23.6	$ 22.8
Gain (loss) related to litigation settlement	$ 70

Leases - Narrative (Details)

Leases - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2021
Lessee, Lease, Description [Line Items]
Operating leases, rent expense	$ 119
Lessee, operating lease, lease not yet commenced, liability		$ 24
Lessee, finance lease, lease not yet commenced, liability		$ 10
Minimum
Lessee, Lease, Description [Line Items]
Lease term		1 year
Maximum
Lessee, Lease, Description [Line Items]
Lease term		16 years

Leases - Components of Lease Ex

Leases - Components of Lease Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Leases [Abstract]
Operating lease expense	$ 109.8	$ 104.6
Variable lease expense	15.8	15.6
Finance Leases
Amortization of right-of-use assets	1.7	1.3
Interest on lease liabilities	0.4	0.4
Total lease expense	$ 127.7	$ 121.9

Leases - Supplemental Balance S

Leases - Supplemental Balance Sheet (Details)	Sep. 30, 2021	Sep. 30, 2020
Weighted average remaining lease term:
Operating leases	6 years 9 months 18 days	6 years 3 months 18 days
Finance leases	4 years 3 months 18 days	7 years 9 months 18 days
Weighted average discount rate:
Operating leases	1.79%	1.84%
Finance leases	3.96%	3.50%

Leases - Operating Lease Maturi

Leases - Operating Lease Maturity (Details) $ in Millions	Sep. 30, 2021USD ($)
Finance Leases
2022	$ 5.6
2023	3.5
2024	1.9
2025	1.6
2026	1.6
Thereafter	2.8
Total undiscounted lease payments	17
Less imputed interest	(1.5)
Total lease liabilities	15.5
Operating Leases
2022	96.2
2023	81.3
2024	62.9
2025	45.5
2026	33
Thereafter	110.1
Total undiscounted lease payments	429
Less imputed interest	(25.5)
Total lease liabilities	$ 403.5

Leases - Supplemental Cash Flow

Leases - Supplemental Cash Flows (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	$ 108.5	$ 103.6
Operating cash flows from finance leases	0.4	0.4
Financing cash flows from finance leases	1.8	1.2
Right-Of-Use Asset Obtained In Exchange For Lease Liability [Abstract]
Operating leases	90.6	131.2
Financing leases	$ 0.9	$ 0

Business Segment Information -

Business Segment Information - Narrative (Details) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2020USD ($)	Sep. 30, 2021USD ($)segment	Sep. 30, 2020USD ($)	Sep. 30, 2019USD ($)
Segment Reporting Information [Line Items]
Number of operating segments | segment		3
Gain (loss) related to litigation settlement	$ 70
Identifiable assets		$ 10,701.6	$ 7,264.7	$ 6,113
Sales		6,997.4	6,329.8	6,694.8
Intelligent Devices
Segment Reporting Information [Line Items]
Identifiable assets		2,143.3	1,585	1,550
Sales		3,311.9	2,956
U.S. Plans
Segment Reporting Information [Line Items]
Sales		$ 3,740.2	$ 3,425.1	$ 3,640.2
Customer Concentration Risk | Revenue from Contract with Customer Benchmark | Systems And Services
Segment Reporting Information [Line Items]
Portion of total sales from individual segment		10.00%	10.00%	10.00%
Corporate
Segment Reporting Information [Line Items]
Identifiable assets		$ 2,433.6	$ 2,692	$ 2,557
Corporate | Shared by segments and used in operating activities
Segment Reporting Information [Line Items]
Identifiable assets		$ 275.8	$ 247.3	$ 230.3

Business Segment Information _2

Business Segment Information - Schedule of Reportable Segments (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Segment Reporting Information [Line Items]
Sales	$ 6,997.4	$ 6,329.8	$ 6,694.8
Sales and operating results of reportable segments
Purchase accounting depreciation and amortization	(55.1)	(41.4)	(16.6)
Corporate and other	(120.6)	(98.9)	(108.8)
Non-operating pension and postretirement benefit (cost) credit	(63.8)	(37.4)	8.4
Gain (loss) on investments	397.4	153.9	(402.2)
Valuation adjustments related to the registration of PTC Shares	0	0	33.7
Legal settlement	70	0	0
Interest (expense) income - net	(93)	(98)	(87.1)
Income before income taxes	1,526.2	1,136.1	901
Operating Segments
Segment Reporting Information [Line Items]
Sales	6,997.4	6,329.8	6,694.8
Segment operating earnings	1,391.3	1,257.9	1,473.6
Intelligent Devices
Segment Reporting Information [Line Items]
Sales	3,311.9	2,956
Intelligent Devices | Operating Segments
Segment Reporting Information [Line Items]
Sales	3,311.9	2,956	3,279.7
Segment operating earnings	702.1	587.8	697
Software & Control
Segment Reporting Information [Line Items]
Sales	1,947	1,681.3
Software & Control | Operating Segments
Segment Reporting Information [Line Items]
Sales	1,947	1,681.3	1,790
Segment operating earnings	531	473.8	531.2
Lifecycle Services | Operating Segments
Segment Reporting Information [Line Items]
Sales	1,738.5	1,692.5	1,625.1
Segment operating earnings	$ 158.2	$ 196.3	$ 245.4

Business Segment Information _3

Business Segment Information - Components of Identifiable Assets, Depreciation and Amortization, and Capital Expenditures for Property (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Segment Reporting Information [Line Items]
Identifiable assets	$ 10,701.6	$ 7,264.7	$ 6,113
Depreciation and amortization	189.8	172.7	152.2
Purchase accounting depreciation and amortization	55.1	41.4	16.6
Capital expenditures	120.3	113.9	132.8
Corporate
Segment Reporting Information [Line Items]
Identifiable assets	2,433.6	2,692	2,557
Depreciation and amortization	1.7	1.8	2.2
Capital expenditures	18.3	18.4	6.5
Operating Segments
Segment Reporting Information [Line Items]
Depreciation and amortization	134.7	131.3	135.6
Intelligent Devices
Segment Reporting Information [Line Items]
Identifiable assets	2,143.3	1,585	1,550
Depreciation and amortization	48.6	51.8	56
Capital expenditures	52	51.3	74.8
Software & Control
Segment Reporting Information [Line Items]
Identifiable assets	4,000.4	1,072.7	872.7
Depreciation and amortization	49.1	40.6	42.6
Capital expenditures	30.4	19.3	34.8
Lifecycle Services
Segment Reporting Information [Line Items]
Identifiable assets	2,124.3	1,915	1,133.3
Depreciation and amortization	35.3	37.1	34.8
Capital expenditures	$ 19.6	$ 24.9	$ 16.7

Business Segment Information _4

Business Segment Information - Schedule of Sales and Property by Geographic Region (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Sales and property by geographic region
Sales	$ 6,997.4	$ 6,329.8	$ 6,694.8
Property	581.9	574.4	571.9
North America
Sales and property by geographic region
Sales	4,132.8	3,760.2	4,014.3
Property	416.1	429.4	443.8
Europe, Middle East and Africa
Sales and property by geographic region
Sales	1,405.7	1,249.3	1,249.8
Property	91.1	81.9	60.5
Asia Pacific
Sales and property by geographic region
Sales	1,012.2	868.7	908.6
Property	54.8	42.8	41.9
Latin America
Sales and property by geographic region
Sales	446.7	451.6	522.1
Property	$ 19.9	$ 20.3	$ 25.7

Valuation and Qualifying Acco_2

Valuation and Qualifying Accounts (Details) - USD ($) $ in Millions		12 Months Ended
		Sep. 30, 2021		Sep. 30, 2020		Sep. 30, 2019
Allowance for doubtful accounts
Valuation and Qualifying Accounts
Balance at Beginning of Year		$ 15.2	[1]	$ 17.4		$ 17.1
Charged to Costs and Expenses		3.1	[1]	7		6.1
Charged to Other Accounts		0.4	[1]	1.1		0
Deductions		5.5		10.3	[2]	5.8	[2]
Balance at End of Year		13.2	[1]	15.2	[1]	17.4
Valuation allowance for deferred tax assets
Valuation and Qualifying Accounts
Balance at Beginning of Year		58		93.8		27
Charged to Costs and Expenses		5.4		3		69.3
Charged to Other Accounts		1.5		0.2		0
Deductions	[2]	32.3		39		2.5
Balance at End of Year		$ 32.6		$ 58		$ 93.8
[1]	Includes allowances for current and other long-term receivables.
[2]	Consists of amounts written off for the allowance for doubtful accounts and adjustments resulting from our ability to utilize foreign tax credits, capital losses, or net operating loss carryforwards for which a valuation allowance had previously been recorded.