Oshkosh (OSK) 10-K 21 Nov 17 2017 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Sep. 30, 2017	Nov. 14, 2017	Mar. 31, 2017
Document and Entity Information [Abstract]
Entity Registrant Name	OSHKOSH CORP
Entity Central Index Key	775,158
Current Fiscal Year End Date	--09-30
Entity Filer Category	Large Accelerated Filer
Document Type	10-K
Document Period End Date	Sep. 30, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Common Stock, Shares Outstanding (in shares)		75,170,198
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 5,130,156,538

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Income Statement [Abstract]
Net sales	$ 6,829.6	$ 6,279.2	$ 6,098.1
Cost of sales	5,655.2	5,223.4	5,058.9
Gross income	1,174.4	1,055.8	1,039.2
Operating expenses:
Selling, general and administrative	665.6	612.4	587.4
Amortization of purchased intangibles	45.8	52.5	53.2
Asset impairment charge	0	26.9	0
Total operating expenses	711.4	691.8	640.6
Operating income	463	364	398.6
Other income (expense):
Interest expense	(59.8)	(60.4)	(70.1)
Interest income	4.9	2.1	2.5
Miscellaneous, net	3.2	1.3	(4.9)
Income before income taxes and equity in earnings of unconsolidated affiliates	411.3	307	326.1
Provision for income taxes	127.2	92.4	99.2
Income before equity in earnings of unconsolidated affiliates	284.1	214.6	226.9
Equity in earnings of unconsolidated affiliates	1.5	1.8	2.6
Net income	$ 285.6	$ 216.4	$ 229.5
Earnings per share attributable to common shareholders:
Total earnings (loss) per share-basic (in dollars per share)	$ 3.82	$ 2.94	$ 2.94
Total earnings (loss) per share -diluted (in dollars per share)	$ 3.77	$ 2.91	$ 2.90

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME Statement - USD ($) $ in Millions	3 Months Ended													12 Months Ended
	Sep. 30, 2017	[1]	Jun. 30, 2017	[2]	Mar. 31, 2017	[3]	Dec. 31, 2016	[4]	Sep. 30, 2016	[5]	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 93.5		$ 128.6		$ 44.3		$ 19.2		$ 61.5		$ 84.2	$ 56.1	$ 14.6	$ 285.6	$ 216.4	$ 229.5
Other comprehensive income (loss), net of tax:
Employee pension and postretirement benefits														27.7	(27.5)	(2.2)
Currency translation adjustments														22.5	(3)	(73.1)
Change in fair value of derivative instruments														(0.2)	(0.1)	0.1
Total other comprehensive income (loss), net of tax														50	(30.6)	(75.2)
Comprehensive income														$ 335.6	$ 185.8	$ 154.3
[1]	The fourth quarter of fiscal 2017 was impacted by restructuring-related charges of $15.8 million ($11.5 million after-tax) in the access equipment segment.
[2]	The third quarter of fiscal 2017 was impacted by restructuring-related charges of $11.1 million ($11.5 million after-tax) in the access equipment segment.
[3]	The second quarter of fiscal 2017 was impacted by restructuring-related charges of $17.6 million ($14.0 million after-tax) in the access equipment segment.
[4]	The first quarter of fiscal 2017 was impacted by restructuring-related charges of $0.7 million ($0.4 million after-tax) in the access equipment segment.
[5]	The fourth quarter of fiscal 2016 was impacted by a combined $27.8 million ($17.5 million after-tax) asset impairment and workforce reduction charge in the access equipment segment.

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Sep. 30, 2017	Sep. 30, 2016
Current assets:
Cash and cash equivalents	$ 447	$ 321.9
Receivables, net	1,306.3	1,021.9
Inventories, net	1,198.4	979.8
Other current assets	88.1	93.9
Total current assets	3,039.8	2,417.5
Property, plant and equipment, net	469.9	452.1
Goodwill	1,013	1,003.5
Purchased intangible assets, net	507.8	553.5
Other long-term assets	68.4	87.2
Total assets	5,098.9	4,513.8
Current liabilities:
Revolving credit facility and current maturities of long-term debt	23	20
Accounts payable	651	466.1
Customer advances	513.4	471.8
Payroll-related obligations	191.8	147.9
Other current liabilities	303.9	261.8
Total current liabilities	1,683.1	1,367.6
Long-term debt, less current maturities	807.9	826.2
Other long-term liabilities	300.5	343.5
Commitments and contingencies
Shareholders' equity:
Preferred Stock ($.01 par value; 2,000,000 shares authorized; none issued and outstanding)	0	0
Common Stock ($.01 par value; 300,000,000 shares authorized; 92,101,465 shares issued)	0.9	0.9
Additional paid-in capital	802.2	782.3
Retained earnings	2,399.8	2,177
Accumulated other comprehensive loss	(125)	(175)
Common Stock in treasury, at cost (17,088,224 and 18,175,669 shares, respectively)	(770.5)	(808.7)
Total shareholders’ equity	2,307.4	1,976.5
Total liabilities and shareholders' equity	$ 5,098.9	$ 4,513.8

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Sep. 30, 2017	Sep. 30, 2016
Stockholders' Equity, Number of Shares, Par Value and Other Disclosures [Abstract]
Preferred Stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred Stock, shares authorized	2,000,000	2,000,000
Preferred Stock, shares issued	0	0
Preferred Stock, shares outstanding	0	0
Common Stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common Stock, shares authorized	300,000,000	300,000,000
Common Stock, shares issued	92,101,465	92,101,465
Common Stock in treasury, shares	17,088,224	18,175,669

CONSOLIDATED STATEMENTS OF EQUI

CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Millions	Total	Common stocks	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Common Stock in Treasury at Cost
Balance at Sep. 30, 2014	$ 1,985	$ 0.9	$ 758	$ 1,840.1	$ (69.2)	$ (544.8)
Changes in Equity
Net income	229.5			229.5
Employee pension and postretirement benefits	(2.2)				(2.2)
Currency translation adjustments	(73.1)				(73.1)
Cash dividends	(53.1)			(53.1)
Repurchase of common stock	(200.4)					(200.4)
Exercise of stock options	8.6		0.3			8.3
Stock-based compensation expense	21.4		21.4
Excess tax benefit from stock-based compensation	3.8		3.8
Payment of earned performance shares	0		(7.4)			7.4
Shares tendered for taxes on stock-based compensation	(8.9)					(8.9)
Change in fair value of derivative instruments	0.1				0.1
Other	0.4		(4.6)			5
Balance at Sep. 30, 2015	1,911.1	0.9	771.5	2,016.5	(144.4)	(733.4)
Changes in Equity
Net income	216.4			216.4
Employee pension and postretirement benefits	(27.5)				(27.5)
Currency translation adjustments	(3)				(3)
Cash dividends	(55.9)			(55.9)
Repurchase of common stock	(100.1)					(100.1)
Exercise of stock options	21.7		0.5			21.2
Stock-based compensation expense	18.7		18.7
Excess tax benefit from stock-based compensation	1.1		1.1
Payment of earned performance shares	0		(2.6)			2.6
Shares tendered for taxes on stock-based compensation	(6.2)					(6.2)
Change in fair value of derivative instruments	(0.1)				(0.1)
Other	0.3		(6.9)			7.2
Balance at Sep. 30, 2016	1,976.5	0.9	782.3	2,177	(175)	(808.7)
Changes in Equity
Net income	285.6			285.6
Employee pension and postretirement benefits	27.7				27.7
Currency translation adjustments	22.5				22.5
Cash dividends	(62.8)			(62.8)
Exercise of stock options	39.9		4.3			35.6
Stock-based compensation expense	22.4		22.4
Payment of earned performance shares	0		(1.3)			1.3
Shares tendered for taxes on stock-based compensation	(4.8)					(4.8)
Change in fair value of derivative instruments	(0.2)				(0.2)
Other	0.6		(5.5)			6.1
Balance at Sep. 30, 2017	$ 2,307.4	$ 0.9	$ 802.2	$ 2,399.8	$ (125)	$ (770.5)

CONSOLIDATED STATEMENTS OF EQU7

CONSOLIDATED STATEMENTS OF EQUITY (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Statement of Stockholders' Equity [Abstract]
Employee pension and postretirement benefits, tax	$ 15.2	$ (14.2)	$ (1.2)
Common Stock, Dividends, Per Share, Cash Paid	$ 0.84	$ 0.76	$ 0.68

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Operating activities:
Net income	$ 285.6	$ 216.4	$ 229.5
Asset impairment charge	0	26.9	0
Depreciation and amortization	130.3	128.8	124.5
Stock-based compensation expense	22.4	18.7	21.4
Deferred income taxes	7.8	(17)	(12.2)
Gain on sale of assets	(6.6)	(19.1)	(9.3)
Foreign Currency Transaction Gain (Loss), Unrealized	1.6	(1.1)	10.4
Other non-cash adjustments	0.1	0.3	14.1
Changes in operating assets and liabilities:
Receivables, net	(295.9)	(39.6)	(13.9)
Inventories, net	(202.3)	327.2	(378.8)
Other current assets	14.6	(19)	(1.7)
Accounts payable	177.2	(87.6)	(28.7)
Customer advances	41.5	31.6	130.1
Payroll-related obligations	43.5	31.2	(28.3)
Income taxes	(14.8)	(14)	17.6
Other current liabilities	43.7	10.8	(9.1)
Other long-term assets and liabilities	(2.2)	(10.6)	25.8
Total changes in operating assets and liabilities	(194.7)	230	(287)
Net cash provided by operating activities	246.5	583.9	91.4
Investing activities:
Additions to property, plant and equipment	(85.8)	(92.5)	(131.7)
Additions to equipment held for rental	(27.4)	(34.8)	(26.3)
Acquisition of a business, net of cash acquired	0	0	(10)
Proceeds from sale of equipment held for rental	49.5	40.2	26.8
Other investing activities	(1.5)	(2.1)	1.1
Net cash used by investing activities	(65.2)	(89.2)	(140.1)
Financing activities:
Repayments of Short-term Debt, Maturing in Three Months or Less	0	(33.5)
Proceeds from Short-term Debt, Maturing in Three Months or Less			33.5
Proceeds from issuance of debt (original maturities greater than three months)	5.9	323.5	375
Repayments of debt (original maturities greater than three months)	(23)	(373.5)	(365)
Repurchases of Common Stock	(4.8)	(106.3)	(209.3)
Debt issuance costs	0	0	(15.5)
Dividends paid	(62.8)	(55.9)	(53.1)
Proceeds from exercise of stock options	39.9	21.7	8.6
Excess tax benefit from stock-based compensation	0	2	4
Net cash used by financing activities	(44.8)	(222)	(221.8)
Effect of exchange rate changes on cash	(11.4)	6.3	(0.4)
Increase (decrease) in cash and cash equivalents	125.1	279	(270.9)
Cash and cash equivalents at beginning of year	321.9	42.9	313.8
Cash and cash equivalents at end of year	447	321.9	42.9
Supplemental disclosures:
Cash paid for interest	57.1	54.7	51
Cash paid for income taxes	$ 129.9	$ 116.8	$ 89.9

Nature of Operations

Nature of Operations	12 Months Ended
	Sep. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature of Operations	Nature of Operations Oshkosh Corporation and its subsidiaries (the “Company”) are leading manufacturers of a wide variety of specialty vehicles and vehicle bodies for the Americas and global markets. “Oshkosh” refers to Oshkosh Corporation, not including its subsidiaries. The Company sells its products into four principal vehicle markets — access equipment, defense, fire & emergency and commercial. The access equipment business is conducted through its wholly-owned subsidiary, JLG Industries, Inc. and its wholly-owned subsidiaries (JLG) and JerrDan Corporation (JerrDan). The Company's defense business is conducted principally through its wholly-owned subsidiary, Oshkosh Defense, LLC and its wholly-owned subsidiary (Oshkosh Defense). The Company’s fire & emergency business is principally conducted through its wholly-owned subsidiaries Pierce Manufacturing Inc. (Pierce), Oshkosh Airport Products, LLC (Airport Products) and Kewaunee Fabrications, LLC (Kewaunee). The Company’s commercial business is principally conducted through its wholly-owned subsidiaries, McNeilus Companies, Inc. (McNeilus), Concrete Equipment Company, Inc. and its wholly-owned subsidiary (CON-E-CO), London Machinery Inc. and its wholly-owned subsidiary (London), Iowa Mold Tooling Co., Inc. (IMT) and Oshkosh Commercial Products, LLC (Oshkosh Commercial).

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Sep. 30, 2017
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Principles of Consolidation and Presentation — The consolidated financial statements include the accounts of Oshkosh and all of its majority-owned or controlled subsidiaries and are prepared in conformity with generally accepted accounting principles in the United States of America (U.S. GAAP). All intercompany accounts and transactions have been eliminated in consolidation. Use of Estimates — The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Revenue Recognition — The Company recognizes revenue on equipment and parts sales when contract terms are met, collectability is reasonably assured and a product is shipped or risk of ownership has been transferred to and accepted by the customer. Revenue from service agreements is recognized as earned, when services have been rendered. Appropriate provisions are made for discounts, returns and sales allowances. Sales are recorded net of amounts invoiced for taxes imposed on the customer such as excise or value-added taxes. Sales to the U.S. government of non-commercial products manufactured to the government’s specifications are recognized under percentage-of-completion accounting using either the units-of-delivery method or cost-to-cost method to measure contract performance. Under the units-of-delivery method, the Company records sales as units are accepted by the U.S. Department of Defense (DoD), generally based on unit sales values stated in the respective contracts. Costs of sales are based on actual costs incurred to produce the units delivered under the contract. Under the cost-to-cost method, sales and estimated margins are recognized as contract costs are incurred. The measurement method selected is generally determined based on the nature of the contract. The Company includes amounts representing contract change orders, claims or other items in sales only when they can be reliably estimated and realization is probable. Bid and proposal costs are expensed as incurred. The Company has significant experience in contracting and producing vehicles for the defense industry, which has resulted in a history of making reasonable estimates of revenues and costs when measuring progress toward contract completion. The Company charges anticipated losses on contracts or programs in progress to earnings when identified. Approximately 16% , 19% and 13% of the Company’s revenues were recognized under the percentage-of-completion accounting method in fiscal 2017 , 2016 and 2015 , respectively. The Company invoices the government as the units are formally accepted. Deferred revenue arises from amounts received in advance of the culmination of the earnings process and is recognized as revenue in future periods when the applicable revenue recognition criteria have been met. In fiscal 2017, changes in estimates on contracts accounted for under the cost-to-cost method on prior year revenues increased defense segment operating income by $6.3 million , net income by $3.9 million and earnings per share by $0.05 . Shipping and Handling Fees and Costs — Revenue received from shipping and handling fees is reflected in net sales. Shipping and handling fee revenue was not significant for any period presented. Shipping and handling costs are included in cost of sales. Warranty — Provisions for estimated warranty and other related costs are recorded in cost of sales at the time of sale and are periodically adjusted to reflect actual experience. The amount of warranty liability accrued reflects management’s best estimate of the expected future cost of honoring Company obligations under the warranty plans. Historically, the cost of fulfilling the Company’s warranty obligations has principally involved replacement parts, labor and sometimes travel for any field retrofit campaigns. The Company’s estimates are based on historical experience, the extent of pre-production testing, the number of units involved and the extent of features/components included in product models. Also, each quarter, the Company reviews actual warranty claims experience to determine if there are systemic defects that would require a field campaign. The Company recognizes the revenue from sales of extended warranties over the life of the contracts. Research and Development and Similar Costs — Except for customer sponsored research and development costs incurred pursuant to contracts (generally with the DoD), research and development costs are expensed as incurred and included in cost of sales. Research and development costs charged to expense amounted to $98.0 million , $103.1 million and $147.9 million during fiscal 2017 , 2016 and 2015 , respectively. Customer sponsored research and development costs incurred pursuant to contracts are accounted for as contract costs. Advertising — Advertising costs are included in selling, general and administrative expense and are expensed as incurred. These expenses totaled $23.0 million , $21.6 million and $22.1 million in fiscal 2017 , 2016 and 2015 , respectively. Stock-Based Compensation — The Company recognizes stock-based compensation using the fair value provisions prescribed by Accounting Standards Codification (ASC) Topic 718, Compensation — Stock Compensation . Accordingly, compensation costs for awards of stock-based compensation settled in shares are determined based on the fair value of the share-based instrument at the time of grant and are recognized as expense over the vesting period of the share-based instrument. See Note 15 of the Notes to Consolidated Financial Statements for information regarding the Company’s stock-based incentive plans. Debt Financing Costs — Debt issuance costs on term debt are amortized using the interest method over the term of the debt. Deferred financing costs on lines of credit are amortized on a straight-line basis over the term of the related lines of credit. Amortization expense was $3.0 million , $3.0 million and $6.4 million (including $3.3 million of amortization related to early debt retirement) in fiscal 2017 , 2016 and 2015 , respectively. Income Taxes — Deferred income taxes are provided to recognize temporary differences between the financial reporting basis and the income tax basis of the Company’s assets and liabilities using currently enacted tax rates and laws. Valuation allowances are established when necessary to reduce deferred tax assets to the amount expected to be realized. In assessing the realizability of deferred tax assets, management considers whether it is more likely than not that some portion or all of the deferred tax assets will not be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income during the periods in which those temporary differences become deductible. Management considers the scheduled reversal of deferred tax liabilities, projected future taxable income and tax planning strategies in making this assessment. The Company evaluates uncertain income tax positions in a two -step process. The first step is recognition, where the Company evaluates whether an individual tax position has a likelihood of greater than 50% of being sustained upon examination based on the technical merits of the position, including resolution of any related appeals or litigation processes. For tax positions that are currently estimated to have a less than 50% likelihood of being sustained, zero tax benefit is recorded. For tax positions that have met the recognition threshold in the first step, the Company performs the second step of measuring the benefit to be recorded. The actual benefits ultimately realized may differ from the Company’s estimates. In future periods, changes in facts and circumstances and new information may require the Company to change the recognition and measurement estimates with regard to individual tax positions. Changes in recognition and measurement estimates are recorded in results of operations and financial position in the period in which such changes occur. Fair Value of Financial Instruments — Based on Company estimates, the carrying amounts of cash equivalents, receivables, accounts payable and accrued liabilities approximated fair value as of September 30, 2017 and 2016 . See Notes 9, 14 and 17 of the Notes to Consolidated Financial Statements for additional fair value information. Cash and Cash Equivalents — The Company considers all highly liquid investments with a maturity of three months or less when purchased to be cash equivalents. Cash equivalents at September 30, 2017 consisted principally of bank deposits and money market instruments. Receivables — Receivables consist of amounts billed and currently due from customers and unbilled costs and accrued profits related to revenues on long-term contracts with the U.S. government that have been recognized for accounting purposes but not yet billed to customers. The Company extends credit to customers in the normal course of business and maintains an allowance for estimated losses resulting from the inability or unwillingness of customers to make required payments. The accrual for estimated losses is based on the Company’s historical experience, existing economic conditions and any specific customer collection issues the Company has identified. Account balances are charged against the allowance when the Company determines it is probable the receivable will not be recovered. Concentration of Credit Risk — Financial instruments that potentially subject the Company to significant concentrations of credit risk consist principally of cash equivalents, trade accounts receivable and guarantees of certain customers’ obligations under deferred payment contracts and lease purchase agreements. The Company maintains cash and cash equivalents, and other financial instruments, with various major financial institutions. The Company performs periodic evaluations of the relative credit standing of these financial institutions and limits the amount of credit exposure with any institution. Concentration of credit risk with respect to trade accounts and lease receivables is limited due to the large number of customers and their dispersion across many geographic areas. However, a significant amount of trade and lease receivables are with the U.S. government, with rental companies globally, with companies in the ready-mix concrete industry, with municipalities and with several large waste haulers in the United States. The Company continues to monitor credit risk associated with its trade receivables. Inventories — Inventories are stated at the lower of cost or market. Cost has been determined using the last-in, first-out (LIFO) method for 82.2% of the Company’s inventories at September 30, 2017 and 81.6% of the Company's inventories at September 30, 2016 . For the remaining inventories, cost has been determined using the first-in, first-out (FIFO) method. Property, Plant and Equipment — Property, plant and equipment are recorded at cost. Depreciation expense is recognized over the estimated useful lives of the respective assets using accelerated and straight-line methods. The estimated useful lives range from ten to forty years for buildings and improvements, from four to twenty-five years for machinery and equipment and from three to ten years for software and related costs. The Company capitalizes interest on borrowings during the active construction period of major capital projects. All capitalized interest has been added to the cost of the underlying assets and is amortized over the useful lives of the assets. Goodwill — Goodwill reflects the cost of an acquisition in excess of the aggregate fair value assigned to identifiable net assets acquired. Goodwill is not amortized; however, it is assessed for impairment at least annually and as triggering events or “indicators of potential impairment” occur. The Company performs its annual impairment test as of July 1 of each fiscal year. The Company evaluates the recoverability of goodwill by estimating the fair value of the businesses to which the goodwill relates. Estimated cash flows and related goodwill are grouped at the reporting unit level. A reporting unit is an operating segment or, under certain circumstances, a component of an operating segment. When the fair value of the reporting unit is less than the carrying value of the reporting unit, a further analysis is performed to measure and recognize the amount of the impairment loss, if any. Impairment losses, limited to the carrying value of goodwill, represent the excess of the carrying amount of a reporting unit’s goodwill over the implied fair value of that goodwill. In evaluating the recoverability of goodwill, it is necessary to estimate the fair value of the reporting units. The Company evaluates the recoverability of goodwill utilizing the income approach and the market approach. The Company weighted the income approach more heavily ( 75% ) as the Company believes the income approach more accurately considers long-term fluctuations in the U.S. and European construction markets than the market approach. Under the income approach, the Company determines fair value based on estimated future cash flows discounted by an estimated weighted-average cost of capital, which reflects the overall level of inherent risk of a reporting unit and the rate of return an outside investor would expect to earn. Estimated future cash flows are based on the Company’s internal projection models, industry projections and other assumptions deemed reasonable by management. Rates used to discount estimated cash flows correspond to the Company’s cost of capital, adjusted for risk where appropriate, and are dependent upon interest rates at a point in time. There are inherent uncertainties related to these factors and management’s judgment in applying them to the analysis of goodwill impairment. Under the market approach, the Company derives the fair value of its reporting units based on revenue and earnings multiples of comparable publicly-traded companies. It is possible that assumptions underlying the impairment analysis will change in such a manner that impairment in value may occur in the future. Impairment of Long-Lived Assets — Property, plant and equipment and amortizable intangible assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. If the sum of the expected undiscounted cash flows is less than the carrying value of the related asset or group of assets, a loss is recognized for the difference between the fair value and carrying value of the asset or group of assets. Non-amortizable trade names are assessed for impairment at least annually and as triggering events or “indicators of potential impairment” occur. The Company performs its annual impairment test in the fourth quarter of its fiscal year. The Company evaluates the potential impairment by estimating the fair value of the non-amortizing intangible assets using the “relief from royalty” method. When the fair value of the non-amortizable trade name is less than the carrying value of the trade name, a further analysis is performed to measure and recognize the amount of the impairment loss, if any. Impairment losses, limited to the carrying value of the non-amortizable trade name, represent the excess of the carrying amount over the implied fair value of that non-amortizable trade name. Customer Advances — Customer advances include amounts received in advance of the completion of fire & emergency and commercial vehicles. Most of these advances bear interest at variable rates approximating the prime rate. Advances also include any performance-based payments received from the DoD in excess of the value of related inventory. Other Long-Term Liabilities — Other long-term liabilities are comprised principally of the portions of the Company's pension liability, other post-employment benefit liability, accrued warranty and accrued product liability that are not expected to be settled in the subsequent twelve month period. Foreign Currency Translation — All balance sheet accounts have been translated into U.S. dollars using the exchange rates in effect at the balance sheet date. Income statement amounts have been translated using the average exchange rate during the period in which the transactions occurred. Resulting translation adjustments are included in “Accumulated other comprehensive income (loss).” Foreign currency transaction gains or losses are included in “Miscellaneous, net” in the Consolidated Statements of Income. The Company recorded a net foreign currency transaction gain of $0.2 million in fiscal 2017 and net foreign currency transaction losses of $1.2 million and $4.5 million in fiscal 2016 and 2015 , respectively. Derivative Financial Instruments — The Company recognizes all derivative financial instruments, such as foreign exchange contracts, in the consolidated financial statements at fair value regardless of the purpose or intent for holding the instrument. Changes in the fair value of derivative financial instruments are either recognized periodically in income or in equity as a component of comprehensive income depending on whether the derivative financial instrument qualifies for hedge accounting, and if so, whether it qualifies as a fair value hedge or cash flow hedge. Generally, changes in fair values of derivatives accounted for as fair value hedges are recorded in income along with the portions of the changes in the fair values of the hedged items that relate to the hedged risks. Changes in fair values of derivatives accounted for as cash flow hedges, to the extent they are effective as hedges, are recorded in other comprehensive income, net of deferred income taxes. Changes in fair value of derivatives not qualifying as hedges are reported in income. Cash flows from derivatives that are accounted for as cash flow or fair value hedges are included in the Consolidated Statements of Cash Flows in the same category as the item being hedged. Reclassifications — Certain reclassifications have been made to the fiscal 2016 financial statements to conform with the fiscal 2017 presentation. “Deferred income tax liabilities,” which was previously presented as a separate line in the Consolidated Balance Sheets, are now reported in “Other long-term liabilities.” Recent Accounting Pronouncements — In May 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standard Update (ASU) 2014-09, Revenue from Contracts with Customers (Topic 606) , and the FASB has since issued several amendments to this standard, which clarifies the principles for recognizing revenue. This guidance requires an entity to recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The standard supersedes all existing U.S. GAAP guidance on revenue recognition and is expected to require the use of more judgment and result in additional disclosures. The new standard is effective for annual reporting periods beginning after December 15, 2017. Early adoption is permitted. The Company plans to adopt the standard on October 1, 2018. The Company has assembled a cross-functional team with representation from all business units that is dedicated to the implementation of this new accounting standard. The team, with the support of a project management office, is currently focused on executing a multi-phase program plan that will culminate with the adoption of the standard . The Company's Audit Committee has been receiving regular briefings on the implementation team's progress and potential implications related to adoption of the new standard. The Company has elected to adopt the new revenue recognition standard following the modified retrospective approach, as permitted by the standard. This approach will result in an adjustment to retained earnings for the cumulative effect of initially applying the new standard on its adoption date. The extent of changes that will be necessary to comply with the requirements of the new standard, as well as its financial impact remain under evaluation. In July 2015, the FASB issued ASU 2015-11, Inventory (Topic 330), Simplifying the Measurement of Inventory . ASU 2015-11 is part of the FASB’s initiative to simplify accounting standards. The guidance requires an entity to recognize inventory within the scope of the standard at the lower of cost or net realizable value. Net realizable value is the estimated selling price in the ordinary course of business, less reasonably predictable costs of completion, disposal and transportation. The Company will be required to adopt ASU 2015-11 as of October 1, 2017. The adoption is not expected to have a material effect on the Company’s consolidated financial statements. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842), which requires lessees to reflect most leases on their balance sheet as lease liabilities with a corresponding right-of-use asset, while leaving presentation of lease expense in the statement of income largely unchanged. The standard also eliminates the real-estate specific provisions that exist under current U.S. GAAP and modifies the classification criteria and accounting lessors must apply to sales-type and direct financing leases. The Company will be required to adopt ASU 2016-02 as of October 1, 2019. Early adoption is permitted. The Company is currently evaluating the impact of ASU 2016-02 on the Company's consolidated financial statements. In March 2016, the FASB issued ASU 2016-09, Compensation - Stock Compensation (Topic 718), Improvements to Employee Share-Based Payment Accounting . ASU 2016-09 is part of the FASB's initiative to simplify accounting standards. The standard requires that all tax effects of share-based payments at settlement (or expiration) be recorded in the income statement at the time the tax effects arise. The standard also clarifies that cash flows resulting from share-based payments be reported as operating activities within the statement of cash flows, permits employers to withhold shares upon settlement of an award to satisfy an employee's tax liability up to the employee's maximum individual tax rate in the relevant jurisdiction without resulting in liability classification of the award and permits entities to make an accounting policy election to estimate or use actual forfeitures when recognizing the expense of share-based compensation. The Company adopted ASU 2016-09 as of October 1, 2016 following a prospective approach for the income tax and earnings per share impacts and a retrospective approach for the cash flow impacts. The adoption of ASU 2016-09 resulted in $6.2 million and $8.9 million of cash outflows related to shares tendered for taxes on stock-based compensation being reclassified from operating cash flows to financing cash flows in fiscal 2016 and 2015 , respectively. In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326), Measurement of Credit Losses on Financial Instruments . The standard requires a change in the measurement approach for credit losses on financial assets measured on an amortized cost basis from an incurred loss method to an expected loss method, thereby eliminating the requirement that a credit loss be considered probable to impact the valuation of a financial asset measured on an amortized cost basis. The standard requires the measurement of expected credit losses to be based on relevant information about past events, including historical experience, current conditions, and a reasonable and supportable forecast that affects the collectibility of the related financial asset. The Company will be required to adopt ASU 2016-13 as of October 1, 2020. Early adoption is permitted. The Company is currently evaluating the impact of ASU 2016-13 on the Company's consolidated financial statements. In October 2016, the FASB issued ASU 2016-16, Income Taxes (Topic 740), Intra-Entity Transfers of Assets Other Than Inventory . The standard requires that an entity recognize the income tax consequences of an intra-entity transfer of an asset when the transfer occurs as opposed to when the asset is transferred to an outside party as required under current U.S. GAAP. The standard does not apply to intra-entity transfers of inventory, which will continue to follow current U.S. GAAP. The Company will be required to adopt ASU 2016-16 as of October 1, 2018. Early adoption is permitted. The Company is currently evaluating the impact of ASU 2016-16 on the Company's consolidated financial statements. In January 2017, the FASB issued ASU 2017-04, Intangibles - Goodwill and Other (Topic 350), Simplifying the Test for Goodwill Impairment. The standard simplifies the measurement of goodwill impairment by eliminating the requirement that an entity compute the implied fair value of goodwill based on the fair values of its assets and liabilities to measure impairment. Instead, goodwill impairment will be measured as the difference between the fair value of the reporting unit and the carrying value of the reporting unit. The standard also clarifies the treatment of the income tax effect of tax deductible goodwill when measuring goodwill impairment loss. The Company will be required to adopt ASU 2017-04 as of October 1, 2020. Early adoption is permitted. The Company is currently evaluating the impact of ASU 2017-04 on the Company's consolidated financial statements. In March 2017, the FASB issued ASU 2017-07, Compensation - Retirement Benefits (Topic 715), Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost. The standard requires that an entity report the service cost component of net periodic pension and postretirement cost in the same line item or items as other compensation costs arising from services rendered by the pertinent employees during the period. The remaining components of net benefit costs are required to be presented in the income statement separately from the service component and outside a subtotal of income from operations, if one is presented. The amendment further allows only the service cost component of net periodic pension and postretirement costs to be eligible for capitalization, when applicable. The Company will be required to adopt ASU 2017-07 as of October 1, 2018. Early adoption is permitted. The Company is currently evaluating the impact of ASU 2017-07 on the Company's consolidated financial statements. In August 2017, the FASB issued ASU 2017-12, Derivatives and Hedging (Topic 815), Targeted Improvements to Accounting for Hedging Activities . The standard more closely aligns hedge accounting with risk management strategies, simplifies the application of hedge accounting, and increases transparency as to the scope and results of hedging programs. The amendments expand and refine hedge accounting for both nonfinancial and financial risk components and align the recognition and presentation of the effects of the hedging instrument and the hedged item in the financial statements. The Company will be required to adopt ASU 2017-12 as of October 1, 2020. Early adoption is permitted. The Company is currently evaluating the impact of ASU 2017-12 on the Company's consolidated financial statements.

Receivables

Receivables	12 Months Ended
	Sep. 30, 2017
Receivables [Abstract]
Receivables	Receivables Receivables consisted of the following (in millions): September 30, 2017 2016 U.S. government: Amounts billed $ 137.8 $ 49.0 Cost and profits not billed 137.9 55.3 275.7 104.3 Other trade receivables 985.4 881.8 Finance receivables 5.8 7.6 Notes receivable 34.2 36.1 Other receivables 46.3 38.6 1,347.4 1,068.4 Less allowance for doubtful accounts (18.3 ) (21.2 ) $ 1,329.1 $ 1,047.2 Classification of receivables in the Consolidated Balance Sheets consisted of the following (in millions): September 30, 2017 2016 Current receivables $ 1,306.3 $ 1,021.9 Long-term receivables (included in “Other long-term assets”) 22.8 25.3 $ 1,329.1 $ 1,047.2 Finance and notes receivable accrual status consisted of the following (in millions): September 30, Finance Receivables Notes Receivables 2017 2016 2017 2016 Aging of receivables that are past due: Greater than 30 days and less than 60 days $ — $ — $ — $ — Greater than 60 days and less than 90 days — — — — Greater than 90 days 2.1 2.9 0.2 — Receivables on nonaccrual status 3.7 4.5 21.3 25.1 Receivables past due 90 days or more and still accruing — — — — Receivables subject to general reserves 2.1 3.1 — — Allowance for doubtful accounts — (0.1 ) — — Receivables subject to specific reserves 3.7 4.5 34.2 36.1 Allowance for doubtful accounts (1.5 ) (0.9 ) (10.0 ) (13.0 ) Finance Receivables: Finance receivables represent sales-type leases resulting from the sale of the Company's products and the purchase of finance receivables from lenders pursuant to customer defaults under program agreements with finance companies. Finance receivables originated by the Company generally include a residual value component. Residual values are determined based on the expectation that the underlying equipment will have a minimum fair market value at the end of the lease term. This residual value accrues to the Company at the end of the lease. The Company uses its experience and knowledge as an original equipment manufacturer and participant in end markets for the related products along with third-party studies to estimate residual values. The Company monitors these values for impairment on a continuous basis and reflects any resulting reductions in value in current earnings. Delinquency is the primary indicator of credit quality of finance receivables. The Company maintains a general allowance for finance receivables considered doubtful of future collection based upon historical experience. Additional allowances are established based upon the Company’s evaluation of the quality of the finance receivables, including the length of time the receivables are past due, past experience of collectability and underlying economic conditions. In circumstances where the Company believes collectability is no longer reasonably assured, a specific allowance is recorded to reduce the net recognized receivable to the amount reasonably expected to be collected. The terms of the finance agreements generally give the Company the ability to take possession of the underlying collateral. The Company may incur losses in excess of recorded allowances if the financial condition of its customers were to deteriorate or the full amount of any anticipated proceeds from the sale of the collateral supporting its customers’ financial obligations is not realized. Notes Receivable: Notes receivable include amounts related to refinancing of trade accounts and finance receivables. As of September 30, 2017 , approximately 70% of the notes receivable balance outstanding was due from three parties. The Company continually evaluates the creditworthiness of its customers and establishes reserves where the Company believes collectability is no longer reasonably assured. Notes receivable are written down if management determines that the specific borrower does not have the ability to repay the loan in full. Certain notes receivable are collateralized by a security interest in the underlying assets and/or other assets owned by the debtor. The Company may incur losses in excess of recorded allowances if the financial condition of its customers were to deteriorate or the full amount of any anticipated proceeds from the sale of the collateral supporting its customers' financial obligations is not realized. Quality of Finance and Notes Receivable: The Company does not accrue interest income on finance and notes receivable in circumstances where the Company believes collectability is no longer reasonably assured. Any cash payments received on nonaccrual finance and notes receivable are applied first to the principal balances. The Company does not resume accrual of interest income until the customer has shown that it is capable of meeting its financial obligations by making timely payments over a sustained period of time. The Company determines past due or delinquency status based upon the due date of the receivable. Receivables subject to specific reserves also include loans that the Company has modified in troubled debt restructurings as a concession to customers experiencing financial difficulty. To minimize the economic loss, the Company may modify certain finance and notes receivable. Modifications generally consist of restructured payment terms and time-frames in which no payments are required. At September 30, 2017 , restructured finance receivables and notes receivables were $3.1 million and $10.0 million , respectively. Losses on troubled debt restructurings were not significant during fiscal 2017 , 2016 or 2015 , respectively. Changes in the Company’s allowance for doubtful accounts by type of receivable were as follows (in millions): Fiscal Year Ended September 30, 2017 Finance Receivables Notes Receivable Trade and Other Receivables Total Allowance for doubtful accounts at beginning of year $ 1.0 $ 13.0 $ 7.2 $ 21.2 Provision for doubtful accounts, net of recoveries 1.4 (1.3 ) 0.7 0.8 Charge-off of accounts (0.9 ) (2.2 ) (1.1 ) (4.2 ) Foreign currency translation — 0.5 — 0.5 Allowance for doubtful accounts at end of year $ 1.5 $ 10.0 $ 6.8 $ 18.3 Fiscal Year Ended September 30, 2016 Finance Receivables Notes Receivable Trade and Other Receivables Total Allowance for doubtful accounts at beginning of year $ 0.1 $ 12.7 $ 7.5 $ 20.3 Provision for doubtful accounts, net of recoveries 0.9 1.3 0.5 2.7 Charge-off of accounts — (1.0 ) (0.9 ) (1.9 ) Foreign currency translation — — 0.1 0.1 Allowance for doubtful accounts at end of year $ 1.0 $ 13.0 $ 7.2 $ 21.2

Inventories

Inventories	12 Months Ended
	Sep. 30, 2017
Inventory Disclosure [Abstract]
Inventories	Inventories Inventories consisted of the following (in millions): September 30, 2017 2016 Raw materials $ 578.1 $ 481.2 Partially finished products 336.6 307.8 Finished products 398.1 286.9 Inventories at FIFO cost 1,312.8 1,075.9 Less: Progress/performance-based payments on U.S. government contracts (31.6 ) (17.8 ) Excess of FIFO cost over LIFO cost (82.8 ) (78.3 ) $ 1,198.4 $ 979.8 Title to all inventories related to U.S. government contracts, which provide for progress or performance-based payments, vests with the U.S. government to the extent of unliquidated progress or performance-based payments.

Property, Plant and Equipment

Property, Plant and Equipment	12 Months Ended
	Sep. 30, 2017
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	Property, Plant and Equipment Property, plant and equipment consisted of the following (in millions): September 30, 2017 2016 Land and land improvements $ 58.5 $ 56.8 Buildings 298.5 283.4 Machinery and equipment 652.2 597.3 Software and related costs 149.6 147.4 Equipment on operating lease to others 30.0 25.7 1,188.8 1,110.6 Less accumulated depreciation (718.9 ) (658.5 ) $ 469.9 $ 452.1 Depreciation expense was $81.5 million , $73.3 million and $64.9 million in fiscal 2017 , 2016 and 2015 , respectively. The Company recognized a long-lived asset impairment charge of $26.9 million during fiscal 2016. Capitalized interest was insignificant for all reported periods. Equipment on operating lease to others represents the cost of equipment shipped to customers for whom the Company has guaranteed the residual value and equipment on short-term leases. These transactions are accounted for as operating leases with the related assets capitalized and depreciated over their estimated economic lives of five to ten years. Cost less accumulated depreciation for equipment on operating lease to others at September 30, 2017 and 2016 was $21.6 million and $18.6 million , respectively.

Goodwill and Purchased Intangib

Goodwill and Purchased Intangible Assets	12 Months Ended
	Sep. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Purchased Intangible Assets	Goodwill and Purchased Intangible Assets As of July 1, 2017 , the Company performed its annual impairment review relative to goodwill and indefinite-lived intangible assets (principally non-amortizable trade names). The Company performed the valuation analysis with the assistance of a third-party valuation adviser. To derive the fair value of its reporting units, the Company utilized both the income and market approaches. For the annual impairment testing in the fourth quarter of fiscal 2017 , the Company used a weighted-average cost of capital, depending on the reporting unit, of 9.0% to 10.5% ( 11.0% to 12.0% at July 1, 2016) and a terminal growth rate of 3.0% ( 3.0% at July 1, 2016). Under the market approach, the Company derived the fair value of its reporting units based on revenue and earnings multiples of comparable publicly-traded companies. As a corroborative source of information, the Company reconciles its estimated fair value to within a reasonable range of its market capitalization, which includes an assumed control premium (an adjustment reflecting an estimated fair value on a control basis), to verify the reasonableness of the fair value of its reporting units obtained through the aforementioned methods. The control premium is estimated based upon control premiums observed in comparable market transactions. To derive the fair value of its trade names, the Company utilized the “relief from royalty” approach. At July 1, 2017 , approximately 89% of the Company’s recorded goodwill and indefinite-lived purchased intangibles were concentrated within the JLG reporting unit in the access equipment segment. The impairment model assumes that the U.S. economy and construction spending will continue to improve over time. Assumptions utilized in the impairment analysis are highly judgmental. While the Company currently believes that an impairment of intangible assets at JLG is unlikely, events and conditions that could result in the impairment of intangibles at JLG include a sharp decline in economic conditions, significantly increased pricing pressure on JLG's margins or other factors leading to reductions in expected long-term sales or profitability at JLG. Based on the Company’s annual impairment review, the Company concluded that there was no impairment of goodwill. Changes in estimates or the application of alternative assumptions could have produced significantly different results. The following table presents changes in goodwill during fiscal 2017 and 2016 (in millions): Access Equipment Fire & Emergency Commercial Total Net goodwill at September 30, 2015 $ 874.2 $ 106.1 $ 20.8 $ 1,001.1 Foreign currency translation 2.4 — — 2.4 Net goodwill at September 30, 2016 876.6 106.1 20.8 1,003.5 Foreign currency translation 9.3 — 0.2 9.5 Net goodwill at September 30, 2017 $ 885.9 $ 106.1 $ 21.0 $ 1,013.0 The following table presents details of the Company’s goodwill allocated to the reportable segments (in millions): September 30, 2017 September 30, 2016 Gross Accumulated Impairment Net Gross Accumulated Impairment Net Access Equipment $ 1,818.0 $ (932.1 ) $ 885.9 $ 1,808.7 $ (932.1 ) $ 876.6 Fire & Emergency 108.1 (2.0 ) 106.1 108.1 (2.0 ) 106.1 Commercial 196.9 (175.9 ) 21.0 196.7 (175.9 ) 20.8 $ 2,123.0 $ (1,110.0 ) $ 1,013.0 $ 2,113.5 $ (1,110.0 ) $ 1,003.5 Details of the Company’s total purchased intangible assets were as follows (in millions): September 30, 2017 Weighted- Average Life Gross Accumulated Amortization Net Amortizable intangible assets: Distribution network 39.1 $ 55.4 $ (29.5 ) $ 25.9 Technology-related 11.9 104.7 (99.7 ) 5.0 Customer relationships 12.8 555.0 (467.6 ) 87.4 Other 16.3 16.4 (14.7 ) 1.7 14.4 731.5 (611.5 ) 120.0 Non-amortizable trade names 387.8 — 387.8 $ 1,119.3 $ (611.5 ) $ 507.8 September 30, 2016 Weighted- Average Life Gross Accumulated Amortization Net Amortizable intangible assets: Distribution network 39.1 $ 55.4 $ (28.0 ) $ 27.4 Technology-related 11.9 104.7 (91.5 ) 13.2 Customer relationships 12.8 550.8 (427.4 ) 123.4 Other 16.3 16.5 (14.7 ) 1.8 14.5 727.4 (561.6 ) 165.8 Non-amortizable trade names 387.7 — 387.7 $ 1,115.1 $ (561.6 ) $ 553.5 When determining the value of customer relationships for purposes of allocating the purchase price of an acquisition, the Company looks at existing customer contracts of the acquired business to determine if they represent a reliable future source of income and hence, a valuable intangible asset for the Company. The Company determines the fair value of the customer relationships based on the estimated future benefits the Company expects from the acquired customer contracts. In performing its evaluation and estimation of the useful lives of customer relationships, the Company looks to the historical growth rate of revenue of the acquired company’s existing customers as well as the historical attrition rates. In connection with the valuation of intangible assets, a 40 -year life was assigned to the value of the Pierce distribution network (net book value of $25.1 million at September 30, 2017 ). The Company believes Pierce maintains the largest North American fire apparatus distribution network. Pierce has exclusive contracts with each distributor related to the fire apparatus product offerings manufactured by Pierce. The useful life of the Pierce distribution network was based on a historical turnover analysis. Non-compete intangible asset lives are based on the terms of the applicable agreements. The estimated future amortization expense of purchased intangible assets for the five years succeeding September 30, 2017 are as follows: 2018 - $38.3 million ; 2019 - $36.9 million ; 2020 - $11.0 million ; 2021 - $5.3 million and 2022 - $4.9 million .

Other Long-Term Assets

Other Long-Term Assets	12 Months Ended
	Sep. 30, 2017
Other Assets, Noncurrent Disclosure [Abstract]
Other Assets Disclosure	Other Long-Term Assets Other long-term assets consisted of the following (in millions): September 30, 2017 2016 Rabbi trust, less current portion $ 20.6 $ 20.5 Customer notes receivable 25.7 30.8 Deferred income taxes, net 4.2 8.4 Investments in unconsolidated affiliates 15.5 14.9 Other 11.0 24.4 77.0 99.0 Less allowance for doubtful notes receivable (8.6 ) (11.8 ) $ 68.4 $ 87.2 The rabbi trust (the “Trust”) holds investments to fund certain of the Company's obligations under its nonqualified supplemental executive retirement plan (SERP). Trust investments include money market and mutual funds. The Trust assets are subject to claims of the Company's creditors.

Leases

Leases	12 Months Ended
	Sep. 30, 2017
Leases [Abstract]
Leases	Leases Certain administrative and production facilities and equipment are leased under long-term agreements. Most leases contain renewal options for varying periods, and certain leases include options to purchase the leased property during or at the end of the lease term. Leases generally require the Company to pay for insurance, taxes and maintenance of the property. Leased capital assets included in net property, plant and equipment were immaterial at September 30, 2017 and 2016 . Other facilities and equipment are leased under arrangements that are accounted for as noncancelable operating leases. Total rental expense for property, plant and equipment under noncancelable operating leases was $48.0 million , $45.0 million and $45.1 million in fiscal 2017 , 2016 and 2015 , respectively. Future minimum lease payments due under operating leases at September 30, 2017 were as follows: 2018 - $24.3 million ; 2019 - $17.6 million ; 2020 - $13.6 million ; 2021 - $11.1 million ; 2022 - $5.7 million ; and thereafter - $7.7 million .

Credit Agreements

Credit Agreements	12 Months Ended
	Sep. 30, 2017
Debt Disclosure [Abstract]
Credit Agreements	Credit Agreements The Company was obligated under the following debt instruments (in millions): September 30, 2017 Principal Debt Issuance Costs Debt, Net Senior Secured Term Loan $ 335.0 $ (0.8 ) $ 334.2 5.375% Senior notes due March 2022 250.0 (3.5 ) 246.5 5.375% Senior notes due March 2025 250.0 (2.8 ) 247.2 $ 835.0 $ (7.1 ) 827.9 Less current maturities (20.0 ) $ 807.9 Revolving Credit Facility $ — Other short-term debt 3.0 Current maturities of long-term debt 20.0 $ 23.0 September 30, 2016 Principal Debt Issuance Costs Debt, Net Senior Secured Term Loan $ 355.0 $ (1.4 ) $ 353.6 5.375% Senior notes due March 2022 250.0 (4.3 ) 245.7 5.375% Senior notes due March 2025 250.0 (3.1 ) 246.9 $ 855.0 $ (8.8 ) 846.2 Less current maturities (20.0 ) $ 826.2 Revolving Credit Facility $ — Current maturities of long-term debt 20.0 $ 20.0 In March 2014, the Company entered into an Amended and Restated Credit Agreement with various lenders (the “Credit Agreement”). The Credit Agreement provides for (i) a revolving credit facility (Revolving Credit Facility) that matures in March 2019 with an initial maximum aggregate amount of availability of $600 million and (ii) a $400 million term loan (Term Loan) due in quarterly principal installments of $5 million with a balloon payment of $310 million due at maturity in March 2019. In January 2015, the Company entered into an agreement with lenders under the Credit Agreement that increased the Revolving Credit Facility to an aggregate maximum amount of $850 million . At September 30, 2017 , outstanding letters of credit of $96.9 million reduced the available capacity under the Revolving Credit Facility to $753.1 million . The Company’s obligations under the Credit Agreement are guaranteed by certain of its domestic subsidiaries, and the Company will guarantee the obligations of certain of its subsidiaries under the Credit Agreement. Subject to certain exceptions, the Credit Agreement is collateralized by (i) a first-priority perfected lien and security interests in substantially all of the personal property of the Company, each material subsidiary of the Company and each subsidiary guarantor, (ii) mortgages upon certain real property of the Company and certain of its domestic subsidiaries and (iii) a pledge of the equity of each material subsidiary of the Company. Under the Credit Agreement, the Company must pay (i) an unused commitment fee ranging from 0.225% to 0.35% per annum of the average daily unused portion of the aggregate revolving credit commitments under the Credit Agreement and (ii) a fee ranging from 0.625% to 2.00% per annum of the maximum amount available to be drawn for each letter of credit issued and outstanding under the Credit Agreement. Borrowings under the Credit Agreement bear interest at a variable rate equal to (i) LIBOR plus a specified margin , which may be adjusted upward or downward depending on whether certain criteria are satisfied, or (ii) for dollar-denominated loans only, the base rate (which is the highest of (a) the administrative agent’s prime rate, (b) the federal funds rate plus 0.50% or (c) the sum of 1% plus one-month LIBOR ) plus a specified margin, which may be adjusted upward or downward depending on whether certain criteria are satisfied. At September 30, 2017 , the interest spread on the Revolving Credit Facility and Term Loan was 150 basis points . The weighted-average interest rate on borrowings outstanding under the Term Loan at September 30, 2017 was 2.74% . The Credit Agreement contains various restrictions and covenants, including requirements that the Company maintain certain financial ratios at prescribed levels and restrictions, subject to certain exceptions, on the ability of the Company and certain of its subsidiaries to consolidate or merge, create liens, incur additional indebtedness, dispose of assets, consummate acquisitions and make investments in joint ventures and foreign subsidiaries. The Credit Agreement contains the following financial covenants: • Leverage Ratio: A maximum leverage ratio (defined as, with certain adjustments, the ratio of the Company’s consolidated indebtedness to consolidated net income before interest, taxes, depreciation, amortization, non-cash charges and certain other items (EBITDA) as of the last day of any fiscal quarter of 4.50 to 1.00 . • Interest Coverage Ratio: A minimum interest coverage ratio (defined as, with certain adjustments, the ratio of the Company’s consolidated EBITDA to the Company’s consolidated cash interest expense) as of the last day of any fiscal quarter of 2.50 to 1.00 . • Senior Secured Leverage Ratio: A maximum senior secured leverage ratio (defined as, with certain adjustments, the ratio of the Company’s consolidated secured indebtedness to the Company’s consolidated EBITDA) of 3.00 to 1.00 . With certain exceptions, the Company may elect to have the collateral pledged in connection with the Credit Agreement released during any period that the Company maintains an investment grade corporate family rating from either S&P Global Ratings or Moody’s Investor Service. During any such period when the collateral has been released, the Company’s leverage ratio as of the last day of any fiscal quarter must not be greater than 3.75 to 1.00 , and the Company would not be subject to any additional requirement to limit its senior secured leverage ratio. The Company was in compliance with the financial covenants contained in the Credit Agreement as of September 30, 2017 . Additionally, with certain exceptions, the Credit Agreement limits the ability of the Company to pay dividends and other distributions, including repurchases of shares of its Common Stock. However, so long as no event of default exists under the Credit Agreement or would result from such payment, the Company may pay dividends and other distributions after March 3, 2010 in an aggregate amount not exceeding the sum of: i. 50% of the consolidated net income of the Company and its subsidiaries (or if such consolidated net income is a deficit, minus 100% of such deficit), accrued on a cumulative basis during the period beginning on January 1, 2010 and ending on the last day of the fiscal quarter immediately preceding the date of the applicable proposed dividend or distribution; and ii. 100% of the aggregate net proceeds received by the Company subsequent to March 3, 2010 either as a contribution to its common equity capital or from the issuance and sale of its Common Stock. In February 2014, the Company issued $250.0 million of 5.375% unsecured senior notes due March 1, 2022 (the “2022 Senior Notes”). In March 2015, the Company issued $250.0 million of 5.375% unsecured senior notes due March 1, 2025 (the “2025 Senior Notes”). The net proceeds of both note issuances were used to repay existing outstanding notes of the Company. The Company has the option to redeem the 2022 Senior Notes and the 2025 Senior Notes for a premium after March 1, 2017 and March 1, 2020, respectively. In fiscal 2015, the Company recognized $14.7 million of expense associated with the 2025 Senior Notes transaction, comprised of call premium, third-party costs and $3.3 million of write-off of unamortized debt issuance costs. Expenses related to the transaction were included in interest expense. Additionally, $3.7 million of debt issuance costs was recognized as a reduction of the carrying value of the related debt in connection with the transaction in fiscal 2015. The 2022 Senior Notes and the 2025 Senior Notes were issued pursuant to separate indentures (the “Indentures”) among the Company, the subsidiary guarantors named therein and a trustee. The Indentures contain customary affirmative and negative covenants. Certain of the Company’s subsidiaries jointly, severally, fully and unconditionally guarantee the Company’s obligations under the 2022 Senior Notes and 2025 Senior Notes. See Note 23 of the Notes to Consolidated Financial Statements for separate financial information of the subsidiary guarantors. The fair value of the long-term debt is estimated based upon Level 2 inputs to reflect market rate of the Company’s debt. At September 30, 2017 , the fair value of the 2022 Senior Notes and the 2025 Senior Notes was estimated to be $260 million ( $262 million at September 30, 2016 ) and $264 million ( $263 million at September 30, 2016 ), respectively. The fair value of the Term Loan approximated book value at both September 30, 2017 and 2016 . See Note 14 of the Notes to Consolidated Financial Statements for the definition of a Level 2 input.

Warranties

Warranties	12 Months Ended
	Sep. 30, 2017
Product Warranties Disclosures [Abstract]
Warranties	Warranties The Company’s products generally carry explicit warranties that extend from six months to five years, based on terms that are generally accepted in the marketplace. Selected components (such as engines, transmissions, tires, etc.) included in the Company’s end products may include manufacturers’ warranties. These manufacturers’ warranties are generally passed on to the end customer of the Company’s products, and the customer would generally deal directly with the component manufacturer. Warranty costs recorded were $60.4 million , $46.8 million and $42.3 million in fiscal 2017 , 2016 and 2015 , respectively. The Company offers a variety of extended warranty programs. The premiums received for an extended warranty are generally deferred until the expiration of the standard warranty period. The unearned premium is then recognized in income over the term of the extended warranty period in proportion to the costs that are expected to be incurred. Unamortized extended warranty premiums included in the following table totaled $30.8 million and $30.4 million at September 30, 2017 and 2016 , respectively. Changes in the Company’s warranty liability and unearned extended warranty premiums were as follows (in millions): Fiscal Year Ended September 30, 2017 2016 Balance at beginning of year $ 89.6 $ 92.1 Warranty provisions 57.4 45.9 Settlements made (51.8 ) (52.5 ) Changes in liability for pre-existing warranties, net 2.5 0.9 Premiums received 12.4 14.8 Amortization of premiums received (12.0 ) (11.3 ) Foreign currency translation 0.7 (0.3 ) Balance at end of year $ 98.8 $ 89.6 Provisions for estimated warranty and other related costs are recorded at the time of sale and are periodically adjusted to reflect actual experience. Certain warranty and other related claims involve matters of dispute that ultimately are resolved by negotiation, arbitration or litigation. At times, warranty issues arise that are beyond the scope of the Company's historical experience. It is reasonably possible that additional warranty and other related claims could arise from disputes or other matters in excess of amounts accrued; however, the Company does not expect that any such amounts, while not determinable, would have a material effect on the Company's consolidated financial condition, results of operations or cash flows.

Guarantee Arrangements

Guarantee Arrangements	12 Months Ended
	Sep. 30, 2017
Guarantees [Abstract]
Guarantee Arrangements	Guarantee Arrangements The Company is party to multiple agreements whereby at September 30, 2017 and 2016 it guaranteed an aggregate of $568.2 million and $563.2 million , respectively, in indebtedness of customers. The Company estimated that its maximum loss exposure under these contracts at September 30, 2017 and 2016 was $101.9 million and $116.3 million , respectively. Under the terms of these and various related agreements and upon the occurrence of certain events, the Company generally has the ability to, among other things, take possession of the underlying collateral. If the financial condition of the customers were to deteriorate and result in their inability to make payments, then additional accruals may be required. While the Company does not expect to experience losses under these agreements that are materially in excess of the amounts reserved, it cannot provide any assurance that the financial condition of the third parties will not deteriorate resulting in the third parties' inability to meet their obligations. In the event that this occurs, the Company cannot guarantee that the collateral underlying the agreements will be sufficient to avoid losses materially in excess of the amounts reserved. Any losses under these guarantees would generally be mitigated by the value of any underlying collateral, including financed equipment, and are generally subject to the finance company's ability to provide the Company clear title to foreclosed equipment and other conditions. During periods of economic weakness, collateral values generally decline and can contribute to higher exposure to losses. Changes in the Company’s credit guarantee liability were as follows (in millions): Fiscal Year Ended September 30, 2017 2016 Balance at beginning of year $ 8.4 $ 5.6 Provision for new credit guarantees 3.2 4.1 Changes for pre-existing guarantees, net 0.5 1.7 Amortization of previous guarantees (3.1 ) (3.0 ) Foreign currency translation 0.1 — Balance at end of year $ 9.1 $ 8.4

Shareholders' Equity

Shareholders' Equity	12 Months Ended
	Sep. 30, 2017
Stockholders' Equity Note [Abstract]
Shareholders' Equity	Shareholders’ Equity On August 31, 2015 the Company's Board of Directors increased the Company's Common Stock repurchase authorization by 10,000,000 shares, increasing the repurchase authorization to 10,299,198 from the balance remaining from prior authorizations. As of September 30, 2017 , the Company repurchased 2,786,624 shares under this authorization at a cost of $112.0 million . As a result, the Company had 7,512,574 shares of Common Stock remaining under this repurchase authorization as of September 30, 2017 . The Company did not repurchase any shares under this authorization during fiscal 2017. Including shares repurchased under prior authorizations, the Company repurchased 2.5 million shares and 4.9 million shares at a cost of $100.1 million and $200.4 million during fiscal 2016 and 2015, respectively. The Company is restricted by its Credit Agreement from repurchasing shares in certain situations. See Note 9 of the Notes to Consolidated Financial Statements for information regarding these restrictions.

Derivative Financial Instrument

Derivative Financial Instruments and Hedging Activities	12 Months Ended
	Sep. 30, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments and Hedging Activities	Derivative Financial Instruments and Hedging Activities The Company has used forward foreign currency exchange contracts (derivatives) to reduce the exchange rate risk of specific foreign currency denominated transactions. These derivatives typically require the exchange of a foreign currency for U.S. dollars at a fixed rate at a future date. At times, the Company has designated these hedges as either cash flow hedges or fair value hedges under FASB ASC Topic 815, Derivatives and Hedging as follows: Fair Value Hedging Strategy - The Company enters into forward foreign exchange contracts to hedge certain firm commitments denominated in foreign currencies. The purpose of the Company’s foreign currency hedging activities is to protect the Company from risk that the eventual U.S. dollar-equivalent cash flows from the sale of products to international customers will be adversely affected by changes in exchange rates. Cash Flow Hedging Strategy - To protect against the impact of movements in foreign exchange rates on forecasted purchases or sales transactions denominated in foreign currency, the Company has a foreign currency cash flow hedging program. The Company hedges portions of its forecasted transactions denominated in foreign currency with forward contracts. At September 30, 2017 , the total notional U.S. dollar equivalent of outstanding forward foreign exchange contracts designated as hedges in accordance with ASC Topic 815 was $7.9 million . Net gains or losses related to hedge ineffectiveness were insignificant for all periods. Ineffectiveness is included in “Miscellaneous, net” in the Consolidated Statements of Income along with mark-to-market adjustments on outstanding non-designated derivatives. The maximum length of time the Company is hedging its exposure to the variability in future cash flows is under twelve months. The Company has entered into forward foreign currency exchange contracts to create an economic hedge to manage foreign exchange risk exposure associated with non-functional currency denominated receivables and payables resulting from global sales and sourcing activities. The Company has not designated these derivative contracts as hedge transactions under FASB ASC Topic 815, and accordingly, the mark-to-market impact of these derivatives is recorded each period in current earnings. The fair value of foreign currency related derivatives is included in the Consolidated Balance Sheets in “Other current assets” and “Other current liabilities.” At September 30, 2017 , the U.S. dollar equivalent of these outstanding forward foreign exchange contracts totaled $79.3 million in notional amounts covering a variety of foreign currency exposures. The Company has entered into interest rate contracts to create an economic hedge to manage changes in interest rates on an executory sales contract that exposes the Company to interest rate risk based on changes in market interest rates. The Company has not designated these derivative contracts as hedge transactions under FASB ASC Topic 815, and accordingly, the mark-to-market impact of these derivatives is recorded each period in current earnings. The fair value of the interest rate related derivatives is included in the Consolidated Balance Sheets in “Other current assets” and “Other current liabilities.” At September 30, 2017 , the U.S. dollar equivalent notional amount of these outstanding interest rate contracts totaled $11.7 million . Fair Market Value of Financial Instruments — The fair values of all open derivative instruments were as follows (in millions): September 30, 2017 September 30, 2016 Other Current Assets Other Current Liabilities Other Current Assets Other Current Liabilities Cash flow hedges: Foreign exchange contracts $ — $ 0.4 $ — $ — Not designated as hedging instruments: Foreign exchange contracts 0.5 0.8 0.1 0.4 Interest rate contracts 0.3 0.7 — 0.4 $ 0.8 $ 1.9 $ 0.1 $ 0.8 The pre-tax effects of derivative instruments consisted of the following (in millions): Classification of Gains (Losses) Fiscal Year Ended September 30, 2017 2016 2015 Cash flow hedges: Foreign exchange contracts Net sales $ (0.1 ) $ — $ — Foreign exchange contracts Cost of sales (0.1 ) — 0.2 Foreign exchange contracts Miscellaneous, net (0.1 ) (0.2 ) 0.1 Not designated as hedging instruments: Foreign exchange contracts Miscellaneous, net 3.5 (7.6 ) 12.7 Interest rate contracts Miscellaneous, net 0.2 (0.2 ) — $ 3.4 $ (8.0 ) $ 13.0

Fair Value Measurement

Fair Value Measurement	12 Months Ended
	Sep. 30, 2017
Fair Value Disclosures [Abstract]
Fair Value Measurement	Fair Value Measurement FASB ASC Topic 820, Fair Value Measurements and Disclosures , defines fair value as the price that would be received to sell an asset or paid to transfer a liability (i.e., exit price) in an orderly transaction between market participants at the measurement date. FASB ASC Topic 820 requires disclosures that categorize assets and liabilities measured at fair value into one of three different levels depending on the assumptions (i.e., inputs) used in the valuation. Level 1 provides the most reliable measure of fair value, while Level 3 generally requires significant management judgment. The three levels are defined as follows: Level 1: Unadjusted quoted prices in active markets for identical assets or liabilities. Level 2: Observable inputs other than quoted prices in active markets for identical assets or liabilities, such as quoted prices for similar assets or liabilities in active markets or quoted prices for identical assets or liabilities in inactive markets. Level 3: Unobservable inputs reflecting management's own assumptions about the inputs used in pricing the asset or liability. There were no transfers of assets between levels during fiscal 2017 or 2016 . The fair values of the Company’s financial assets and liabilities were as follows (in millions): Level 1 Level 2 Level 3 Total September 30, 2017: Assets: SERP plan assets (a) $ 21.7 $ — $ — $ 21.7 Foreign currency exchange derivatives (b) — 0.5 — 0.5 Interest rate contracts (c) — 0.3 — 0.3 Liabilities: Foreign currency exchange derivatives (b) $ — $ 1.2 $ — $ 1.2 Interest rate contracts (c) — 0.7 — 0.7 Level 1 Level 2 Level 3 Total September 30, 2016: Assets: SERP plan assets (a) $ 21.7 $ — $ — $ 21.7 Foreign currency exchange derivatives (b) — 0.1 — 0.1 Liabilities: Foreign currency exchange derivatives (b) $ — $ 0.4 $ — $ 0.4 Interest rate contracts (c) — 0.4 — 0.4 _________________________ (a) Represents investments in a rabbi trust for the Company's non-qualified SERP. The fair values of these investments are determined using a market approach. Investments include mutual funds for which quoted prices in active markets are available. The Company records changes in the fair value of investments in “Miscellaneous, net” in the Consolidated Statements of Income. (b) Based on observable market transactions of forward currency prices. (c) Based on observable market transactions of interest rate swap prices. See Notes 9 and 17 of the Notes to Consolidated Financial Statements for fair value information related to debt and pension assets. Items Measured at Fair Value on a Nonrecurring Basis — In addition to items that are measured at fair value on a recurring basis, the Company also has assets and liabilities in its balance sheet that are measured at fair value on a nonrecurring basis. As these assets and liabilities are not measured at fair value on a recurring basis, they are not included in the tables above. Assets and liabilities that are measured at fair value on a nonrecurring basis include long-lived assets (see Note 5 of the Notes to Consolidated Financial Statements for impairments of long-lived assets and Note 6 of the Notes to Consolidated Financial Statements for impairment valuation analysis of intangible assets). The Company has determined that the fair value measurements related to each of these assets rely primarily on Company-specific inputs and the Company’s assumptions about the use of the assets, as observable inputs are not available. As such, the Company has determined that each of these fair value measurements reside within Level 3 of the fair value hierarchy.

Stock-Based Compensation

Stock-Based Compensation	12 Months Ended
	Sep. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation	Stock-Based Compensation In February 2017, the Company’s shareholders approved the 2017 Incentive Stock and Awards Plan (the “2017 Stock Plan”). The 2017 Stock Plan replaced the 2009 Incentive Stock and Awards Plan (as amended, the “2009 Stock Plan”). While no new awards will be granted under the 2009 Stock Plan or its predecessor, the 2004 Incentive Stock and Awards Plan, awards previously made under these two plans that were outstanding as of the approval date of the 2017 Stock Plan will remain outstanding and continue to be governed by the provisions of the respective stock plan under which they were issued. At September 30, 2017 , the Company had reserved 8,930,655 shares of Common Stock available for issuance to provide for the exercise of outstanding stock options and the issuance of Common Stock under incentive compensation awards, including awards issued prior to the effective date of the 2017 Stock Plan. Under the 2017 Stock Plan, officers, directors, including non-employee directors, and employees of the Company may be granted stock options, stock appreciation rights (SAR), performance shares, performance units, shares of Common Stock, restricted stock, restricted stock units (RSU) or other stock-based awards. The 2017 Stock Plan provides for the granting of options to purchase shares of the Company’s Common Stock at not less than the fair market value of such shares on the date of grant. Stock options granted under the 2017 Stock Plan generally become exercisable in equal installments over a 3 -year period, beginning with the first anniversary of the date of grant of the option, unless a shorter or longer duration is established by the Human Resources Committee of the Board of Directors at the time of the option grant. Stock options terminate not more than ten years from the date of grant. The exercise price of stock options and the market value of restricted stock unit awards are determined based on the closing market price of the Company's Common Stock on the date of grant. Except to the extent vesting is accelerated upon early retirement and except for performance shares and performance units, vesting is based solely on continued service as an employee of the Company. The Company recognizes stock-based compensation expense over the requisite service period for vesting of an award, or to an employee's eligible retirement date, if earlier and applicable. Information related to the Company’s equity-based compensation plans in effect as of September 30, 2017 was as follows: Plan Category Number of Securities to be Issued Upon Exercise of Outstanding Options or Vesting of Share Awards Weighted-Average Exercise Price of Outstanding Options Number of Securities Remaining Available for Future Issuance Under Equity Compensation Plans Equity compensation plans approved by security holders 2,190,550 $ 45.14 6,740,105 Equity compensation plans not approved by security holders — — — 2,190,550 $ 45.14 6,740,105 Total stock-based compensation expense (income) was as follows (in millions): Fiscal Year Ended September 30, 2017 2016 2015 Stock options $ 7.5 $ 6.7 $ 6.0 Stock awards (shares and units) 11.6 9.7 11.5 Performance share awards 3.3 2.3 3.9 Cash-settled stock appreciation rights 3.3 3.4 (0.9 ) Cash-settled restricted stock unit awards 0.5 0.9 0.9 Total stock-based compensation cost 26.2 23.0 21.4 Income tax benefit recognized for stock-based compensation (9.6 ) (8.4 ) (7.9 ) $ 16.6 $ 14.6 $ 13.5 There was no annual award of stock-based compensation in fiscal 2015 as the date for the annual award was moved from September to November beginning with September 2015. Stock Options — A summary of the Company’s stock option activity is as follows: Fiscal Year Ended September 30, 2017 2016 2015 Options Weighted- Average Exercise Price Options Weighted- Average Exercise Price Options Weighted- Average Exercise Price Outstanding, beginning of year 2,104,929 $ 39.55 2,369,872 $ 36.57 2,690,507 $ 36.20 Granted 393,975 66.89 567,550 41.52 6,725 44.92 Forfeited (11,145 ) 52.54 (70,177 ) 44.31 (25,215 ) 42.20 Expired — — (43,392 ) 49.19 (24,866 ) 54.41 Exercised (956,068 ) 41.70 (718,924 ) 30.25 (277,279 ) 31.05 Outstanding, end of year 1,531,691 45.14 2,104,929 39.55 2,369,872 36.57 Exercisable, end of year 819,906 36.47 1,473,761 38.28 1,939,478 34.25 Stock options outstanding and exercisable as of September 30, 2017 were as follows (in millions, except share and per share amounts): Outstanding Exercisable Exercise Prices Number Outstanding Weighted Average Remaining Contractual Life (in years) Weighted Average Exercise Price Aggregate Intrinsic Value Number Weighted Average Weighted Average Aggregate $ 7.95 - $ 19.24 123,234 1.0 $ 14.54 $ 8.4 123,234 1.0 $ 14.54 $ 8.4 $ 28.96 - $ 41.59 684,477 4.0 37.55 30.8 355,034 3.0 33.87 17.3 $ 46.94 - $ 66.89 723,980 5.0 57.51 18.1 341,638 3.5 47.07 12.1 1,531,691 4.2 45.14 $ 57.3 819,906 3.0 36.47 $ 37.8 The aggregate intrinsic values in the tables above represent the total pre-tax intrinsic value (difference between the Company’s closing stock price on the last trading day of fiscal 2017 and the exercise price, multiplied by the number of in-the-money options) that would have been received by the option holders had all option holders exercised their options on September 30, 2017 . This amount changes based on the fair market value of the Company’s Common Stock. The total intrinsic value of options exercised for fiscal 2017 , 2016 and 2015 was $24.0 million , $12.6 million and $5.0 million , respectively. The actual income tax benefit realized totaled $8.8 million , $4.6 million and $1.8 million for those same periods. As of September 30, 2017 , the Company had $3.0 million of unrecognized compensation expense related to outstanding stock options, which will be recognized over a weighted-average period of 1.9 years. The Company uses the Black-Scholes valuation model to value stock options utilizing the following weighted-average assumptions: Fiscal Year Ended September 30, Options Granted During 2017 2016 2015 Assumptions: Expected term (in years) 5.1 5.1 5.1 Expected volatility 37.30 % 40.40 % 42.08 % Risk-free interest rate 1.79 % 1.73 % 1.55 % Expected dividend yield 1.52 % 1.65 % 1.25 % The expected option term represents the period of time that the options granted are expected to be outstanding and was based on historical experience. The Company used its historical stock prices over the expected term as the basis for the Company’s volatility assumption. The assumed risk-free interest rates were based on five-year U.S. Treasury rates in effect at the time of grant. The expected dividend yield was based on average actual yield on the ex-dividend date. The weighted-average per share grant date fair values for stock option grants during fiscal 2017 , 2016 and 2015 were $20.43 , $13.44 and $15.54 , respectively. Stock Awards — A summary of the Company’s stock award activity is as follows: Fiscal Year Ended September 30, 2017 2016 2015 Number of Shares Weighted- Average Grant Date Fair Value Number of Shares Weighted- Average Grant Date Fair Value Number of Shares Weighted- Average Grant Date Fair Value Beginning of year 313,806 $ 42.93 273,992 $ 46.84 609,869 $ 41.70 Granted 214,325 66.84 323,800 40.33 37,725 44.50 Forfeited (16,381 ) 51.67 (53,928 ) 45.71 (17,606 ) 41.36 Vested (159,591 ) 47.01 (230,058 ) 43.28 (355,996 ) 38.06 End of year 352,159 55.22 313,806 42.93 273,992 46.84 The total fair value of shares vested during fiscal 2017 , 2016 and 2015 was $11.2 million , $10.7 million and $14.3 million , respectively. The actual income tax benefit realized totaled $4.1 million , $3.9 million and $5.3 million for those same periods. As of September 30, 2017 , the Company had $8.1 million of unrecognized compensation expense related to stock awards, which will be recognized over a weighted-average period of 2.0 years. Performance Share Awards — A summary of the Company’s performance share awards activity is as follows: Fiscal Year Ended September 30, 2017 2016 2015 Number of Shares Weighted- Average Grant Date Fair Value Number of Shares Weighted- Average Grant Date Fair Value Number of Shares Weighted- Average Grant Date Fair Value Beginning of year 103,550 $ 49.83 129,475 $ 54.94 257,475 $ 45.44 Granted 49,800 79.01 78,175 47.07 — — Forfeited — — (31,326 ) 52.90 — — Performance adjustments 36,750 54.84 (27,874 ) 54.71 (44,800 ) 35.84 Vested (73,500 ) 54.84 (44,900 ) 54.59 (83,200 ) 35.84 End of year 116,600 60.71 103,550 49.83 129,475 54.94 Performance share awards generally vest over a three-year service period following the grant date. Performance shares vest under two separate measurement criteria. The first type vest only if the Company’s total shareholder return (TSR) over the three year term of the awards compares favorably to that of a comparator group of companies. The second type vest only if the Company’s return on invested capital (ROIC) over the vesting period compares favorably to that of a comparator group of companies. Potential payouts range from zero to 200% of the target awards and changes from target amounts are reflected as performance adjustments. Actual payouts for TSR performance share awards vesting in the fiscal years ending September 30, 2017, 2016 and 2015 were 200% , 80% and 65% of target levels, respectively. Awards based on ROIC were not granted until fiscal 2016; therefore, these awards will not begin to be fully vested until September 2018. In October 2017, 75,495 shares of Common Stock were issued from treasury for unpaid performance shares that vested in fiscal 2017. An income tax benefit is recognized in the year of Common Stock issuance. The Company realized an income tax benefit of $0.9 million , $1.3 million and $4.1 million in fiscal 2017, 2016 and 2015, respectively, related to the issuance of Common Stock as part of the Company's performance share incentive compensation program. As of September 30, 2017 , the Company had $4.2 million of unrecognized compensation expense related to performance share awards, which will be recognized over a weighted-average period of 1.8 years. The grant date fair values of the TSR performance share awards were estimated using a Monte Carlo simulation model utilizing the following weighted-average assumptions: Fiscal Year Ended September 30, Total Shareholder Return Performance Shares Granted During 2017 2016 Assumptions: Expected term (in years) 2.86 2.88 Expected volatility 34.09 % 33.28 % Risk-free interest rate 1.32 % 1.20 % The Company used its historical stock prices as the basis for the Company’s volatility assumption. The assumed risk-free interest rates were based on U.S. Treasury rates in effect at the time of grant. The expected term was based on the vesting period. The weighted-average fair value used to record compensation expense for TSR performance share awards granted during fiscal 2017 and 2016 was $96.47 and $54.33 per award, respectively. There were no performance share awards granted in fiscal 2015 because of the change in annual grant date from September to November of the following fiscal year. ROIC performance shares are granted as target awards. A payout factor has been established ranging from zero to 200% of the target award based on the Company's actual performance compared to performance of a peer group over the vesting period. Compensation expense is recorded ratably over the vesting period based on the amount of award that is expected to be earned under the plan formula, adjusted each reporting period based on current information. Cash-Settled Stock Appreciation Rights — In fiscal 2017 and 2016 , the Company granted employees 11,750 and 27,900 cash-settled SARs, respectively. There were no cash-settled SARs granted during fiscal 2015. Each SAR award represents the right to receive cash equal to the excess of the per share price of the Company’s Common Stock on the date that a participant exercises such right over the grant date price of the Company’s Common Stock. Compensation cost for SARs is remeasured at each reporting period based on the estimated fair value on the date of grant using the Black Scholes option-pricing model, utilizing assumptions similar to stock option awards and is recognized as an expense over the requisite service period. The total value of SARs exercised during fiscal 2017 , 2016 and 2015 was $2.9 million , $1.2 million and $2.1 million , respectively. As of September 30, 2017 , the Company had $0.2 million of unrecognized compensation expense related to SAR awards, which will be recognized over a weighted-average period of 1.1 years. Cash-Settled Restricted Stock Units — In fiscal 2017 and 2016 , the Company granted employees 7,125 and 13,700 cash-settled RSUs, respectively. There were no cash-settled RSUs granted during fiscal 2015. Each RSU award provides recipients the right to receive cash equal to the value of a share of the Company’s Common Stock at predetermined vesting dates. Compensation cost for RSUs is remeasured at each reporting period and is recognized as an expense over the requisite service period. The total value of RSUs vested during fiscal 2017 , 2016 and 2015 was $0.5 million , $0.6 million and $2.1 million , respectively. As of September 30, 2017 , the Company had $0.4 million of unrecognized compensation expense related to RSUs, which will be recognized over a weighted-average period of 1.4 years.

Restructuring and Other Charges

Restructuring and Other Charges Restructuring and Other Charges	12 Months Ended
	Sep. 30, 2017
Restructuring and Related Activities [Abstract]
Restructuring and Other Charges	Restructuring and Other Charges In September 2016, the Company committed to transition its access equipment aftermarket parts warehousing to a third party logistics company. As a result, the access equipment segment ceased operations at its Orrville, Ohio parts warehouse by the end of fiscal 2017. This initiative was undertaken to improve customer service levels, increase operational efficiency and allow the Company to reallocate resources to invest in future growth. The Company expects to incur cash charges related to severance costs and other employment-related benefits of approximately $3.0 million related to this decision, of which $1.9 million and $0.9 million was incurred in fiscal 2017 and fiscal 2016, respectively. With the Company’s announced intent to outsource its aftermarket parts distribution to a third party, the Company abandoned an information system which was developed to support aftermarket parts distribution and recognized a pre-tax impairment charge of $26.9 million in the fourth quarter of fiscal 2016. On January 26, 2017, as part of simplification activities in support of the Company’s MOVE strategy, the access equipment segment announced it had committed to certain restructuring plans. The plans included the closure of its manufacturing plant and pre-delivery inspection facilities in Belgium, the streamlining of telehandler product offerings to a reduced range in Europe, the transfer of remaining European telehandler manufacturing to the Company’s facility in Romania and reductions in engineering staff supporting European telehandlers, including the closure of a UK-based engineering facility. The announced plans also included the move of North American telehandler production from Ohio to facilities in Pennsylvania. The Company expects total implementation costs for these actions to be approximately $50.0 million , including approximately $11.0 million of operating costs related to the plans that are expected to result in future benefit to the Company. The Company incurred approximately $33.9 million of the pre-tax implementation costs in fiscal 2017 and expects the remainder to be incurred in fiscal 2018. The access equipment segment recognized $9.4 million of additional costs related to these plans within “Cost of sales” in fiscal 2017. Pre-tax restructuring charges for fiscal year ended September 30, 2017 were as follows (in millions): Cost of Sales Selling, General and Administrative Expenses Total Access equipment $ 35.8 $ — $ 35.8 Pre-tax restructuring charges for fiscal year ended September 30, 2016 were as follows (in millions): Cost of Sales Operating Expenses Total Access equipment $ 0.9 $ 26.9 $ 27.8 Changes in the Company's restructuring reserves for fiscal 2017 and 2016 were as follows (in millions): Employee Severance and Termination Benefits Property, Plant and Equipment Impairment Other Costs Total Balance at September 30, 2015 $ — $ — $ — $ — Restructuring provision 0.9 26.9 — 27.8 Utilized - noncash — (26.9 ) — (26.9 ) Balance at September 30, 2016 0.9 — — 0.9 Restructuring provision 27.3 4.3 4.2 35.8 Utilized - cash (9.7 ) — (3.3 ) (13.0 ) Utilized - noncash — (4.3 ) — (4.3 ) Foreign currency translation 1.3 — 0.1 1.4 Balance at September 30, 2017 $ 19.8 $ — $ 1.0 $ 20.8

Employee Benefit Plans

Employee Benefit Plans	12 Months Ended
	Sep. 30, 2017
Defined Benefit Plan [Abstract]
Employee Benefit Plans	Employee Benefit Plans Defined Benefit Plans — Oshkosh and certain of its subsidiaries sponsor multiple defined benefit pension plans for certain employees providing services to Oshkosh, Oshkosh Defense, Airport Products, Oshkosh Commercial and Pierce. The benefits provided are based primarily on average compensation, years of service and date of birth. Hourly plans are generally based on years of service and a benefit dollar multiplier. The Company periodically amends the plans, including changing the benefit dollar multipliers and other revisions. Effective December 31, 2012, salaried participants in the pension plans no longer receive credit, other than for vesting purposes, for eligible earnings. In December 2013, the Pierce pension plan was amended to close participation in the plan for new production employees. Effective October 1, 2016, the Oshkosh Defense hourly defined benefit pension plan was closed to new production employees, who will instead participate in an expanded Company-sponsored, defined contribution plan. Supplemental Executive Retirement Plans — The Company maintains defined benefit and defined contribution SERPs for certain executive officers of Oshkosh and its subsidiaries. In fiscal 2013, the Oshkosh defined benefit SERP was amended to freeze benefits under the plan and certain executive officers became eligible for the new Oshkosh defined contribution SERP. At the same time, the Company established the Trust to fund obligations under the Oshkosh SERPs. As of September 30, 2017 , the Trust held assets of $21.7 million . The Trust assets are subject to claims of the Company's creditors. The Trust assets are included in “Other current assets ” and “Other long-term assets ” in the Consolidated Balance Sheets. The Company recognized $2.0 million , $1.8 million and $0.8 million of expense under the Oshkosh defined contribution SERP in fiscal 2017 , 2016 and 2015 , respectively. Postretirement Medical Plans — Oshkosh and certain of its subsidiaries sponsor multiple postretirement benefit plans for Oshkosh Defense, JLG, Pierce and Kewaunee hourly employees, retirees and their spouses. The plans generally provide health benefits based on years of service and date of birth. These plans are unfunded. Changes in benefit obligations and plan assets, as well as the funded status of the Company’s defined benefit pension plans and postretirement benefit plans as of and for the fiscal years ended September 30, 2017 and 2016 , were as follows (in millions): Postretirement Pension Benefits Health and Other 2017 2016 2017 2016 Accumulated benefit obligation at September 30 $ 468.9 $ 474.9 $ 50.0 $ 47.2 Change in projected benefit obligation Benefit obligation at October 1 $ 482.3 $ 414.9 $ 47.2 $ 37.5 Service cost 10.7 8.8 2.5 2.0 Interest cost 17.8 18.3 1.6 1.5 Actuarial loss (gain) (12.1 ) 56.4 0.5 8.3 Participant contributions 0.2 0.2 — — Plan amendments — 1.1 — — Curtailments 0.5 — — — Benefits paid (26.6 ) (13.2 ) (1.8 ) (2.1 ) Currency translation adjustments 0.9 (4.2 ) — — Benefit obligation at September 30 $ 473.7 $ 482.3 $ 50.0 $ 47.2 Postretirement Pension Benefits Health and Other 2017 2016 2017 2016 Change in plan assets Fair value of plan assets at October 1 $ 334.0 $ 312.5 $ — $ — Actual return on plan assets 43.5 37.7 — — Company contributions 17.7 3.1 1.8 2.1 Participant contributions 0.2 0.2 — — Expenses paid (1.9 ) (2.2 ) — — Benefits paid (26.6 ) (13.2 ) (1.8 ) (2.1 ) Currency translation adjustments 0.9 (4.1 ) — — Fair value of plan assets at September 30 $ 367.8 $ 334.0 $ — $ — Funded status of plan - underfunded at September 30 $ (105.9 ) $ (148.3 ) $ (50.0 ) $ (47.2 ) Recognized in consolidated balance sheet at September 30 Accrued benefit liability (current liability) $ (1.9 ) $ (2.0 ) $ (1.1 ) $ (1.5 ) Accrued benefit liability (long-term liability) (104.0 ) (146.3 ) (48.9 ) (45.7 ) $ (105.9 ) $ (148.3 ) $ (50.0 ) $ (47.2 ) Recognized in accumulated other comprehensive income (loss) as of September 30 (net of taxes) Net actuarial (loss) gain $ (41.7 ) $ (69.0 ) $ (4.6 ) $ (4.5 ) Prior service (cost) benefit (7.9 ) (9.1 ) 8.0 8.7 $ (49.6 ) $ (78.1 ) $ 3.4 $ 4.2 Weighted-average assumptions as of September 30 Discount rate 3.85 % 3.70 % 3.71 % 3.47 % Expected return on plan assets 5.93 % 5.78 % n/a n/a Pension benefit plans with accumulated benefit obligations in excess of plan assets consisted of the following (in millions): September 30 2017 2016 Projected benefit obligation $ 473.7 $ 482.3 Accumulated benefit obligation 468.9 474.9 Fair value of plan assets 367.8 334.0 The components of net periodic benefit cost (income) for fiscal years ended September 30 were as follows (in millions): Postretirement Pension Benefits Health and Other 2017 2016 2015 2017 2016 2015 Components of net periodic benefit cost (income) Service cost $ 10.7 $ 8.8 $ 8.2 $ 2.5 $ 2.0 $ 1.7 Interest cost 17.8 18.3 18.1 1.6 1.5 1.7 Expected return on plan assets (17.9 ) (17.4 ) (17.9 ) — — — Amortization of prior service cost (benefit) 1.8 1.8 1.7 (0.9 ) (0.9 ) (0.9 ) Curtailment/settlement 0.5 — — — — (3.4 ) Amortization of net actuarial loss (gain) 4.5 2.3 2.6 0.2 (0.1 ) 0.1 Expenses paid 1.9 2.2 2.8 — — — Net periodic benefit cost (income) $ 19.3 $ 16.0 $ 15.5 $ 3.4 $ 2.5 $ (0.8 ) Other changes in plan assets and benefit obligations recognized in other comprehensive income Net actuarial loss (gain) $ (37.8 ) $ 36.6 $ 10.0 $ 0.5 $ 8.3 $ (7.7 ) Prior service cost — 1.1 1.1 — — — Amortization of prior service benefit (cost) (1.8 ) (1.8 ) (1.7 ) 0.9 0.9 0.9 Curtailment/settlement — — — — — 3.4 Amortization of net actuarial (loss) gain (4.5 ) (2.3 ) (2.6 ) (0.2 ) 0.1 (0.1 ) $ (44.1 ) $ 33.6 $ 6.8 $ 1.2 $ 9.3 $ (3.5 ) Weighted-average assumptions Discount rate 3.70 % 4.45 % 4.52 % 3.47 % 4.08 % 4.04 % Expected return on plan assets 5.78 % 6.03 % 6.25 % n/a n/a n/a In connection with staffing reductions in the defense segment, the Company recorded post-employment curtailment gains of $3.4 million during fiscal 2015. Amounts expected to be recognized in pension and supplemental employee retirement plan net periodic benefit costs during fiscal 2018 included in “Accumulated other comprehensive income (loss)” in the Consolidated Balance Sheet at September 30, 2017 are prior service costs of $1.8 million ( $1.1 million net of tax) and unrecognized net actuarial losses of $1.9 million ( $1.2 million net of tax). The assumed health care cost trend rate used in measuring the accumulated postretirement benefit obligation for the Company was 7.0% in fiscal 2017 , declining to 5.0% in fiscal 2025. If the health care cost trend rate was increased by 100 basis points, the accumulated postretirement benefit obligation at September 30, 2017 would increase by $12.9 million and the net periodic postretirement benefit cost for fiscal 2018 would increase by $2.1 million . A corresponding decrease of 100 basis points would decrease the accumulated postretirement benefit obligation at September 30, 2017 by $9.1 million and the net periodic postretirement benefit cost for fiscal 2018 would decrease by $1.4 million . The Company’s Board of Directors has appointed an Investment Committee (Committee), which consists of members of management, to manage the investment of the Company’s pension plan assets. The Committee has established and operates under an Investment Policy. The Committee determines the asset allocation and target ranges based upon periodic asset/liability studies and capital market projections. The Committee retains external investment managers to invest the assets and an adviser to monitor the performance of the investment managers. The Investment Policy prohibits certain investment transactions, such as commodity contracts, margin transactions, short selling and investments in Company securities, unless the Committee gives prior approval. The weighted-average of the Company’s pension plan asset allocations and target allocations at September 30, 2017 by asset category, were as follows: Target % Actual Asset Category Fixed income 30% - 40% 37 % Large-cap equity 25% - 35% 34 % Mid-cap equity 5% - 15% 7 % Small-cap equity 5% - 15% 9 % Global equity 5% - 15% 10 % Other 0% - 5% 3 % 100 % The Company's pension plan investment strategy is based on an expectation that, over time, equity securities will provide higher returns than debt securities. The plans primarily minimize the risk of larger losses under this strategy through diversification of investments by asset class, by investing in different styles of investment management within the classes and using a number of different investment managers. Beginning in fiscal 2016, the Company began to implement a dynamic liability driven investment strategy for those pension plans with frozen benefits. The objective of this strategy is to more closely align the pension plan assets with its pension plan liabilities in terms of how both respond to changes in interest rates. Plan assets will be allocated to two investment categories, including a category containing high quality fixed income securities and another category comprised of traditional securities and alternative asset classes. Assets are managed externally according to guidelines approved by the Company. Over time, the Company intends to reduce assets allocated to the return seeking category and correspondingly increase assets allocated to the high quality fixed income category to align assets more closely with the pension plan obligations. The plans’ expected return on assets is based on management’s and the Committee’s expectations of long-term average rates of return to be achieved by the plans’ investments. These expectations are based on the plans’ historical returns and expected returns for the asset classes in which the plans are invested. The fair value of plan assets by major category and level within the fair value hierarchy was as follows (in millions): Quoted Prices for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total September 30, 2017: Common stocks U.S. companies (a) $ 70.8 $ 5.7 $ — $ 76.5 International companies (b) — 11.4 — 11.4 Mutual funds (a) 71.3 — — 71.3 Government and agency bonds (c) — 5.4 — 5.4 Corporate bonds and notes (d) — 4.5 — 4.5 Money market funds (e) 9.1 — — 9.1 $ 151.2 $ 27.0 $ — 178.2 Investments measured at net asset value (NAV) (f) 189.6 $ 367.8 Quoted Prices for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total September 30, 2016: Common stocks U.S. companies (a) $ 66.8 $ 5.4 $ — $ 72.2 International companies (b) — 11.5 — 11.5 Mutual funds (a) 61.9 — — 61.9 Government and agency bonds (c) — 5.3 — 5.3 Corporate bonds and notes (d) — 6.0 — 6.0 Money market funds (e) 5.8 — — 5.8 $ 134.5 $ 28.2 $ — 162.7 Investments measured at net asset value (NAV) (f) 171.3 $ 334.0 _________________________ (a) Primarily valued using a market approach based on the quoted market prices of identical instruments that are actively traded on public exchanges. (b) Valuation model looks at underlying security “best” price, exchange rate for underlying security's currency against the U.S. Dollar and ratio of underlying security to American depository receipt. (c) These investments consist of debt securities issued by the U.S. Treasury, U.S. government agencies and U.S. government-sponsored enterprises and have a variety of structures, coupon rates and maturities. These investments are considered to have low default risk as they are guaranteed by the U.S. government. Fixed income securities are primarily valued using a market approach with inputs that include broker quotes, benchmark yields, base spreads and reported trades. (d) These investments consist of debt obligations issued by a variety of private and public corporations. These are investment grade securities which historically have provided a steady stream of income. Fixed income securities are primarily valued using a market approach with inputs that include broker quotes, benchmark yields, base spreads and reported trades. (e) These investments largely consist of short-term investment funds and are valued using a market approach based on the quoted market prices of identical instruments. (f) These investments consists of privately placed funds that are valued based on NAV. NAV of the funds is based on the fair value of each funds underlying investments. In accordance with ASC Subtopic 820-10, certain investments that are measured at fair value using the NAV per share (or its equivalent) practical expedient have not been classified in the fair value hierarchy. The following table sets forth additional disclosures for the fair value measurement of the fair value of pension plans assets that calculate fair value based on NAV per share practical expedient as of September 30, 2017 (in millions): Fair Value Unfunded Commitments Redemption Frequency (if Currently Eligible) Redemption Notice Period (1) Common collective trust $ 189.6 $ — N/A 15 days _________________________ (1) Represents the maximum redemption period. A portion of the investment does not have any redemption period restrictions. The following table sets forth additional disclosures for the fair value measurement of the fair value of pension plans assets that calculate fair value based on NAV per share practical expedient as of September 30, 2016 (in millions): Fair Value Unfunded Commitments Redemption Frequency (if Currently Eligible) Redemption Notice Period (1) Common collective trust $ 171.3 $ — N/A 15 days _________________________ (1) Represents the maximum redemption period. A portion of the investment does not have any redemption period restrictions. The Company’s policy is to fund the pension plans in amounts that comply with contribution limits imposed by law. The Company expects to make contributions of approximately $15.0 million to its pension plans in fiscal 2018. The Company’s estimated future benefit payments under Company sponsored plans were as follows (in millions): Postretirement Health and Other Fiscal Year Ending Pension Benefits September 30, Qualified Non-Qualified 2018 $ 12.3 $ 1.9 $ 1.1 2019 13.5 1.9 1.6 2020 14.9 1.9 2.2 2021 16.2 1.8 2.7 2022 17.5 1.8 3.1 2023-2027 107.0 9.7 20.8 Multi-Employer Pension Plans — The Company participates in the Boilermaker-Blacksmith National Pension Trust (Employer Identification Number 48-6168020), a multi-employer defined benefit pension plan related to collective bargaining employees at the Company's Kewaunee facility. The Company's contributions and pension benefits payable under the plan and the administration of the plan are determined by the terms of the related collective-bargaining agreement, which expires on May 1, 2022. The multi-employer plan poses different risks to the Company than single-employer plans in the following respects: 1. The Company's contributions to the multi-employer plan may be used to provide benefits to all participating employees of the program, including employees of other employers. 2. In the event that another participating employer ceases contributions to the multi-employer plan, the Company may be responsible for any unfunded obligations along with the remaining participating employers. 3. If the Company chooses to withdraw from the multi-employer plan, the Company may be required to pay a withdrawal liability based on the underfunded status of the plan at that time. As of December 31, 2016, the plan-certified zone status as defined by the Pension Protection Act of 2006 was Yellow and accordingly the plan has implemented a financial improvement plan or a rehabilitation plan. Effective January 1, 2007, the plan's Board of Trustees voluntarily elected to have the zone status changed to Red as defined by the Pension Protection Act of 2006. The Company's contributions to the multi-employer plan did not exceed 5% of the total plan contributions for fiscal 2017, 2016 or 2015. The Company made contributions to the plan of $1.2 million in each of fiscal 2017 , 2016 and 2015 . 401(k) and Defined Contribution Pension Replacement Plans — The Company has defined contribution 401(k) plans for substantially all domestic employees. The plans allow employees to defer 2% to 100% of their income on a pre-tax basis. Each employee who elects to participate is eligible to receive Company matching contributions, which are based on employee contributions to the plans, subject to certain limitations. For pension replacement plans, the Company contributes between 2% and 6% of an employee's base pay, depending on age. Amounts expensed for Company matching and discretionary contributions were $37.6 million , $35.6 million and $33.4 million in fiscal 2017 , 2016 and 2015 , respectively.

Income Taxes

Income Taxes	12 Months Ended
	Sep. 30, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Pre-tax income was taxed in the following jurisdictions (in millions): Fiscal Year Ended September 30, 2017 2016 2015 Domestic $ 392.7 $ 277.1 $ 316.4 Foreign 18.6 29.9 9.7 $ 411.3 $ 307.0 $ 326.1 Significant components of the provision for income taxes were as follows (in millions): Fiscal Year Ended September 30, 2017 2016 2015 Allocated to Income Before Equity in Earnings of Unconsolidated Affiliates Current: Federal $ 104.9 $ 103.6 $ 108.8 Foreign 13.5 3.2 1.5 State 1.0 2.6 1.1 Total current 119.4 109.4 111.4 Deferred: Federal 6.6 (18.5 ) (10.8 ) Foreign 4.2 2.0 (1.3 ) State (3.0 ) (0.5 ) (0.1 ) Total deferred 7.8 (17.0 ) (12.2 ) $ 127.2 $ 92.4 $ 99.2 Allocated to Other Comprehensive Income (Loss) Deferred federal, state and foreign $ 15.1 $ (14.2 ) $ (1.2 ) The reconciliation of income tax computed at the U.S. federal statutory tax rates to income tax expense was: Fiscal Year Ended September 30, 2017 2016 2015 Effective Rate Reconciliation U.S. federal tax rate 35.0 % 35.0 % 35.0 % State income taxes, net 1.3 1.3 2.5 Foreign taxes 0.6 (1.7 ) (2.4 ) Tax audit settlements — 0.1 (2.6 ) Valuation allowance 0.5 (0.6 ) 0.4 Domestic tax credits (4.2 ) (1.5 ) (1.3 ) Manufacturing deduction (2.8 ) (3.0 ) (2.8 ) Share-based compensation (1.3 ) — — Other, net 1.8 0.5 1.6 30.9 % 30.1 % 30.4 % During fiscal 2017 , the Company recorded discrete tax benefits of $20.1 million ( 4.9% of pre-tax income), which included benefits related to excess tax benefit from share-based compensation, provision to return adjustments for federal, state, and foreign jurisdictions, tax reserve releases due to expiration of statutes of limitations and other resolutions, and releases of valuation allowances on deferred tax assets for federal capital loss and state net operating loss carryforwards. During fiscal 2016, the Company recorded discrete tax benefits of $7.5 million ( 2.4% of pre-tax income), which included benefits related to the reinstatement of the U.S. research and development tax credit for periods prior to fiscal 2016, provision to return adjustments for federal, state, and foreign jurisdictions, and tax reserve releases due to expiration of statutes of limitations. During fiscal 2015, the Company recorded discrete tax benefits of $13.8 million ( 4.2% of pre-tax income), which included benefits related to the reinstatement of the U.S. research and development tax credit for periods prior to fiscal 2015 and settlement of audits and expiration of statutes of limitations. Deferred income tax assets and liabilities were comprised of the following (in millions): September 30, 2017 2016 Deferred tax assets: Other long-term liabilities $ 81.0 $ 109.9 Losses and credits 31.2 36.4 Accrued warranty 31.8 27.0 Other current liabilities 24.5 31.1 Payroll-related obligations 34.9 28.2 Receivables 7.0 6.3 Other 12.4 (0.8 ) Gross deferred tax assets 222.8 238.1 Less valuation allowance (10.4 ) (8.6 ) Deferred tax assets, net 212.4 229.5 Deferred tax liabilities: Intangible assets 154.8 167.0 Property, plant and equipment 52.4 47.4 Inventories 17.6 15.5 Other 3.6 2.5 Deferred tax liabilities 228.4 232.4 Deferred tax liabilities, net of deferred tax assets $ (16.0 ) $ (2.9 ) The net deferred tax liability is classified in the Consolidated Balance Sheets as follows (in millions): September 30, 2017 2016 Long-term net deferred tax asset $ 4.2 $ 8.4 Long-term net deferred tax liability (20.2 ) (11.3 ) Net deferred tax liabilities $ (16.0 ) $ (2.9 ) As of September 30, 2017 , the Company had $50.4 million of net operating loss carryforwards available to reduce future taxable income of certain foreign subsidiaries in countries which allow such losses to be carried forward anywhere from eight years to an unlimited period. In addition, the Company had $227.8 million of state net operating loss carryforwards, which are subject to expiration in 2018 to 2037 and state credit carryforwards of $16.1 million , which are subject to expiration in 2022 to 2031. Deferred tax assets for foreign net operating loss carryforwards, state net operating loss carryforwards and state credit carryforwards were $15.0 million , $7.6 million and $8.6 million , respectively. Amounts are reviewed for recoverability based on historical taxable income, the expected reversals of existing temporary differences, tax-planning strategies and projections of future taxable income. The Company maintains a valuation allowance against foreign deferred tax assets and state deferred tax assets of $8.3 million and $2.1 million , respectively, as of September 30, 2017 . The Company provides for U.S. income taxes on undistributed earnings of its foreign operations except to the extent that they are considered to be indefinitely reinvested. On a quarterly basis, the Company examines its reinvestment plan, evaluating the profitability and cash requirements for its U.S. and overseas operations and its ability to mobilize funds. To the extent that the Company's assessment of the earnings and funding needs of its foreign subsidiaries changes, deferred U.S. and foreign income taxes, and foreign withholding taxes may need to be accrued. At September 30, 2017 , the Company had undistributed earnings generated by foreign operations of $184.4 million , all of which is considered to be indefinitely reinvested. If these earnings were repatriated to the United States, the Company would be required to accrue and pay U.S. federal income taxes and foreign withholding taxes, as adjusted for foreign tax credits. Determination of the amount of any unrecognized deferred income tax liability on these earnings is not practicable. A reconciliation of gross unrecognized tax benefits, excluding interest and penalties, was as follows (in millions): Fiscal Year Ended September 30, 2017 2016 2015 Balance at beginning of year $ 37.4 $ 27.0 $ 33.5 Additions for tax positions related to current year 1.2 7.6 4.6 Additions for tax positions related to prior years 6.0 8.4 2.1 Reductions for tax positions related to prior years (5.5 ) (1.1 ) — Settlements — (3.0 ) (8.6 ) Lapse of statutes of limitations (1.9 ) (1.5 ) (4.5 ) Foreign currency translation — — (0.1 ) Balance at end of year $ 37.2 $ 37.4 $ 27.0 As of September 30, 2017 , net unrecognized tax benefits of $18.5 million would affect the Company’s effective tax rate if recognized. The Company recognizes accrued interest and penalties, if any, related to unrecognized tax benefits in the “Provision for income taxes” in the Consolidated Statements of Income. During fiscal 2017, 2016 and 2015 , the Company recognized income of $0.4 million , $1.2 million and $3.0 million related to interest and penalties, respectively. At September 30, 2017 and 2016 , the Company had accruals for the payment of interest and penalties of $9.8 million and $10.0 million , respectively. During fiscal 2018, it is reasonably possible that federal, state and foreign tax audit resolutions could reduce unrecognized tax benefits by approximately $7.0 million , either because the Company’s tax positions are sustained on audit, because the Company agrees to their disallowance or the statute of limitations closes. The Company files federal income tax returns, as well as multiple state, local and non-U.S. jurisdiction tax returns. The Company is regularly audited by federal, state and foreign tax authorities. During fiscal 2016, the U.S. Internal Revenue Service completed its audit of the Company for the taxable years ended September 30, 2012 and 2013. As of September 30, 2017 , tax years open for examination under applicable statutes were as follows: Tax Jurisdiction Open Tax Years Australia 2013 - 2017 Belgium 2014 - 2017 Brazil 2011 - 2017 Canada 2013 - 2017 China 2012 - 2017 Romania 2011 - 2017 The Netherlands 2012 - 2017 United States (federal) 2014 - 2017 United States (state and local) 2006 - 2017

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss) Accumulated Other Comprehensive Income (Loss)	12 Months Ended
	Sep. 30, 2017
Equity [Abstract]
Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) Changes in accumulated other comprehensive income (loss) by component were as follows (in millions): Employee Pension and Postretirement Benefits, Net of Tax Cumulative Translation Adjustments Derivative Instruments Accumulated Other Comprehensive Income (Loss) Balance at September 30, 2014 $ (44.2 ) $ (25.0 ) $ — $ (69.2 ) Other comprehensive income (loss) before reclassifications (3.7 ) (73.1 ) 0.3 (76.5 ) Amounts reclassified from accumulated other comprehensive income (loss) 1.5 — (0.2 ) 1.3 Net current period other comprehensive income (loss) (2.2 ) (73.1 ) 0.1 (75.2 ) Balance at September 30, 2015 (46.4 ) (98.1 ) 0.1 (144.4 ) Other comprehensive income (loss) before reclassifications (29.5 ) (3.0 ) (0.2 ) (32.7 ) Amounts reclassified from accumulated other comprehensive income (loss) 2.0 — 0.1 2.1 Net current period other comprehensive income (loss) (27.5 ) (3.0 ) (0.1 ) (30.6 ) Balance at September 30, 2016 (73.9 ) (101.1 ) — (175.0 ) Other comprehensive income (loss) before reclassifications 23.7 22.5 (0.2 ) 46.0 Amounts reclassified from accumulated other comprehensive income (loss) 4.0 — — 4.0 Net current period other comprehensive income (loss) 27.7 22.5 (0.2 ) 50.0 Balance at September 30, 2017 $ (46.2 ) $ (78.6 ) $ (0.2 ) $ (125.0 ) Reclassifications out of accumulated other comprehensive income (loss) included in the computation of net periodic pension and postretirement benefit cost (refer to Note 17 of the Notes to Consolidated Financial Statements for additional details regarding employee benefit plans) were as follows (in millions): Fiscal Year Ended September 30, 2017 2016 2015 Amortization of employee pension and postretirement benefits items Prior service costs $ (0.9 ) $ (0.9 ) $ (0.8 ) Actuarial losses (4.7 ) (2.2 ) (2.7 ) Curtailment/settlement (0.5 ) — 1.2 Total before tax (6.1 ) (3.1 ) (2.3 ) Tax benefit 2.1 1.1 0.8 Net of tax $ (4.0 ) $ (2.0 ) $ (1.5 )

Earnings Per Share

Earnings Per Share	12 Months Ended
	Sep. 30, 2017
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share Prior to September 1, 2013, the Company granted awards of nonvested stock that contained a nonforfeitable right to dividends, if declared. In accordance with FASB ASC Topic 260, Earnings Per Share , these awards are considered to be participating securities and as a result, earnings per share is calculated using the two-class method. The two-class method is an earnings allocation method that determines earnings per share for common shares and participating securities. The undistributed earnings are allocated between common shares and participating securities as if all earnings had been distributed during the period. Participating securities and common shares have equal rights to undistributed earnings. Effective September 1, 2013, new grants of awards of nonvested stock do not contain a nonforfeitable right to dividends during the vesting period. As a result, an employee will forfeit the right to dividends accrued on unvested awards if such awards do not ultimately vest. As such, these awards are not treated as participating securities in the earnings per share calculation as the employees do not have equivalent dividend rights as common shareholders. The calculation of basic and diluted earnings per common share was as follows (in millions, except share amounts): Fiscal Year Ended September 30, 2017 2016 2015 Net income $ 285.6 $ 216.4 $ 229.5 Earnings allocated to participating securities — — (0.5 ) Earnings available to common shareholders $ 285.6 $ 216.4 $ 229.0 Basic weighted-average common shares outstanding 74,674,115 73,570,020 77,990,432 Dilutive stock options and other equity-based compensation awards 1,115,930 862,898 1,101,303 Participating restricted stock — — (110,317 ) Diluted weighted-average common shares outstanding 75,790,045 74,432,918 78,981,418 Options not included in the computation of diluted earnings per share attributable to common shareholders because they would have been anti-dilutive were as follows: Fiscal Year Ended September 30, 2017 2016 2015 Stock options 381,350 224,200 1,153,252

Contingencies, Significant Esti

Contingencies, Significant Estimates and Concentrations	12 Months Ended
	Sep. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Contingencies, Significant Estimates and Concentrations	Contingencies, Significant Estimates and Concentrations Personal Injury Actions and Other — Product and general liability claims are made against the Company from time to time in the ordinary course of business. The Company is generally self-insured for future claims up to $5.0 million per claim. Accordingly, a reserve is maintained for the estimated costs of such claims. At September 30, 2017 and 2016 , the estimated net liabilities for product and general liability claims totaled $39.1 million and $38.3 million , respectively. There is inherent uncertainty as to the eventual resolution of unsettled claims. Management, however, believes that any losses in excess of established reserves will not have a material effect on the Company’s financial condition, results of operations or cash flows. Market Risks — The Company was contingently liable under bid, performance and specialty bonds totaling $598.4 million and $503.6 million at September 30, 2017 and 2016 , respectively. Open standby letters of credit issued by the Company’s banks in favor of third parties totaled $96.9 million and $110.8 million at September 30, 2017 and 2016 , respectively. Other Matters — The Company is subject to other environmental matters and legal proceedings and claims, including patent, antitrust, product liability, warranty and state dealership regulation compliance proceedings that arise in the ordinary course of business. Although the final results of all such matters and claims cannot be predicted with certainty, management believes that the ultimate resolution of all such matters and claims will not have a material effect on the Company’s financial condition, results of operations or cash flows. Actual results could vary, among other things, due to the uncertainties involved in litigation. At September 30, 2017 , approximately 27% of the Company’s workforce was covered under collective bargaining agreements. The Company derived a significant portion of its revenue from the DoD, as follows (in millions): Fiscal Year Ended September 30, 2017 2016 2015 DoD $ 1,314.6 $ 1,205.0 $ 922.1 Foreign military sales 32.1 1.8 0.3 Total DoD sales $ 1,346.7 $ 1,206.8 $ 922.4 No other customer represented more than 10% of sales for fiscal 2017 , 2016 or 2015 . Certain risks are inherent in doing business with the DoD, including technological changes and changes in levels of defense spending. All DoD contracts contain a provision that they may be terminated at any time at the convenience of the U.S. government. In such an event, the Company is entitled to recover allowable costs plus a reasonable profit earned to the date of termination. Because the Company is a relatively large defense contractor, the Company’s U.S. government contract operations are subject to extensive annual audit processes and to U.S. government investigations of business practices and cost classifications from which legal or administrative proceedings can result. Based on U.S. government procurement regulations, under certain circumstances the Company could be fined, as well as suspended or debarred from U.S. government contracting. During a suspension or debarment, the Company would also be prohibited from selling equipment or services to customers that depend on loans or financial commitments from the Export-Import Bank, Overseas Private Investment Corporation and similar U.S. government agencies. The Company was one of several bidders on a large, multi-year military truck solicitation for the Canadian government. The Company's bid was not selected and the Company subsequently submitted a legal challenge of that conclusion. In May 2016, the Canadian International Trade Tribunal ruled in the Company's favor in connection with that challenge. At this time, the Company is unable to estimate the ultimate impact of this challenge and subsequent ruling in the Company's favor.

Business Segment Information

Business Segment Information	12 Months Ended
	Sep. 30, 2017
Segment Reporting [Abstract]
Business Segment Information	Business Segment Information The Company is organized into four reportable segments based on the internal organization used by the President and Chief Executive Officer for making operating decisions and measuring performance and based on the similarity of customers served, common management, common use of facilities and economic results attained. The Company’s segments are as follows: Access Equipment : This segment consists of JLG and JerrDan. JLG manufactures aerial work platforms and telehandlers that are sold worldwide for use in a wide variety of construction, industrial, institutional and general maintenance applications to position workers and materials at elevated heights. Access equipment customers include equipment rental companies, construction contractors, manufacturing companies and home improvement centers. JerrDan manufactures and markets towing and recovery equipment in the U.S. and abroad. Defense : This segment consists of Oshkosh Defense. Oshkosh Defense manufactures tactical wheeled vehicles and supply parts and services for the U.S. military and for other militaries around the world. Sales to the DoD accounted for 70.6% , 86.1% and 91.9% of the segment’s sales for fiscal 2017 , 2016 and 2015 , respectively. Fire & Emergency : This segment includes Pierce, Airport Products and Kewaunee. These business units manufacture and market commercial and custom fire vehicles, simulators and emergency vehicles primarily for fire departments, airports and other governmental units, and broadcast vehicles for broadcasters and TV stations in the U.S. and abroad. Commercial : This segment includes McNeilus, CON-E-CO, London, IMT and Oshkosh Commercial. McNeilus, CON-E-CO, London and Oshkosh Commercial manufacture, market and distribute concrete mixers, portable concrete batch plants and vehicle and vehicle body components. McNeilus and London also manufacture, market and distribute refuse collection vehicles and components. IMT is a manufacturer of field service vehicles and truck-mounted cranes for niche markets. Sales are made primarily to commercial and municipal customers in the Americas. In accordance with FASB ASC Topic 280, Segment Reporting , for purposes of business segment performance measurement, the Company does not allocate to individual business segments costs or items that are of a non-operating nature or organizational or functional expenses of a corporate nature. The caption “Corporate” includes corporate office expenses, share-based compensation, costs of certain business initiatives and shared services or operations benefiting multiple segments, including costs to start up the corporate-led shared manufacturing facility in Mexico, and results of insignificant operations. Identifiable assets of the business segments exclude general corporate assets, which principally consist of cash and cash equivalents, certain property, plant and equipment, and certain other assets pertaining to corporate activities. Intersegment sales generally include amounts invoiced by a segment for work performed for another segment. Amounts are based on actual work performed and agreed-upon pricing, which is intended to be reflective of the contribution made by the supplying business segment. The accounting policies of the reportable segments are the same as those described in Note 2 of the Notes to Consolidated Financial Statements. Selected financial information concerning the Company’s reportable segments and product lines is as follows (in millions): Fiscal Year Ended September 30, 2017 2016 2015 External Customers Inter- segment Net Sales External Customers Inter- segment Net Sales External Customers Inter- segment Net Sales Access equipment Aerial work platforms $ 1,629.6 $ — $ 1,629.6 $ 1,539.5 $ — $ 1,539.5 $ 1,627.0 $ — $ 1,627.0 Telehandlers 661.8 — 661.8 773.9 — 773.9 1,126.1 — 1,126.1 Other 735.0 — 735.0 699.0 — 699.0 647.5 — 647.5 Total access equipment 3,026.4 — 3,026.4 3,012.4 — 3,012.4 3,400.6 — 3,400.6 Defense 1,818.6 1.5 1,820.1 1,349.3 1.8 1,351.1 931.8 8.0 939.8 Fire & emergency 1,015.4 15.5 1,030.9 941.5 11.8 953.3 791.5 23.6 815.1 Commercial Concrete placement 474.0 — 474.0 463.6 — 463.6 461.0 — 461.0 Refuse collection 391.1 — 391.1 409.1 — 409.1 385.0 — 385.0 Other 99.3 5.9 105.2 103.3 3.2 106.5 128.2 3.8 132.0 Total commercial 964.4 5.9 970.3 976.0 3.2 979.2 974.2 3.8 978.0 Corporate and intersegment eliminations 4.8 (22.9 ) (18.1 ) — (16.8 ) (16.8 ) — (35.4 ) (35.4 ) Consolidated $ 6,829.6 $ — $ 6,829.6 $ 6,279.2 $ — $ 6,279.2 $ 6,098.1 $ — $ 6,098.1 Fiscal Year Ended September 30, 2017 2016 2015 Operating income (loss): Access equipment (a) $ 259.1 $ 263.4 $ 407.0 Defense 207.9 122.5 9.2 Fire & emergency 104.2 67.0 43.8 Commercial 43.8 67.6 64.5 Corporate (152.0 ) (156.5 ) (126.0 ) Intersegment eliminations — — 0.1 Consolidated 463.0 364.0 398.6 Interest expense net of interest income (b) (54.9 ) (58.3 ) (67.6 ) Miscellaneous other income (expense) 3.2 1.3 (4.9 ) Income before income taxes and equity in earnings of unconsolidated affiliates $ 411.3 $ 307.0 $ 326.1 _________________________ (a) Fiscal 2017 results include $35.8 million of restructuring costs and $9.4 million of operating expenses related to restructuring plans. Fiscal 2016 results include a $26.9 million asset impairment charge and a $0.9 million workforce reduction charge. (b) Fiscal 2015 results include $14.7 million in debt extinguishment costs. Fiscal Year Ended September 30, 2017 2016 2015 Depreciation and amortization: Access equipment $ 72.1 $ 77.0 $ 74.1 Defense 14.5 11.1 12.2 Fire & emergency 9.4 9.7 10.3 Commercial 12.7 12.0 11.2 Corporate (a) 21.6 19.0 16.7 Consolidated $ 130.3 $ 128.8 $ 124.5 Capital expenditures: Access equipment (b) $ 51.4 $ 52.5 $ 56.6 Defense 31.9 22.2 2.2 Fire & emergency 7.2 7.2 4.7 Commercial (b) 10.9 10.0 11.5 Corporate (c) 11.8 35.4 83.0 Consolidated $ 113.2 $ 127.3 $ 158.0 _________________________ (a) Includes $3.3 million in fiscal 2015 related to the write-off of deferred financing fees due to the early extinguishment of the related debt. (b) Capital expenditures include both the purchase of property, plant and equipment and equipment held for rental. (c) Fiscal 2016 and 2015 include capital expenditures for an enterprise-wide information system and the corporate-led shared manufacturing facility in Mexico that supports multiple operating segments. September 30, 2017 2016 Identifiable assets: Access equipment: U.S. $ 1,905.5 $ 1,856.0 Europe 541.0 521.5 Rest of the world 246.1 193.7 Total access equipment 2,692.6 2,571.2 Defense: U.S. 775.1 522.2 Rest of the world 7.0 3.0 Total defense 782.1 525.2 Fire & emergency - U.S. 552.6 522.7 Commercial: U.S. 377.3 358.4 Rest of the world 42.3 33.4 Total commercial 419.6 391.8 Corporate: U.S. (a) 543.9 408.3 Rest of the world (b) 108.1 94.6 Total corporate 652.0 502.9 Consolidated $ 5,098.9 $ 4,513.8 _________________________ (a) Primarily includes cash and short-term investments. (b) Primarily includes the corporate-led shared manufacturing facility in Mexico that supports multiple operating segments. The following table presents net sales by geographic region based on product shipment destination (in millions): Fiscal Year Ended September 30, 2017 2016 2015 Net sales: United States $ 5,094.8 $ 4,756.6 $ 4,789.3 Other North America 191.6 219.5 302.8 Europe, Africa and the Middle East 1,146.9 905.5 564.4 Rest of the world 396.3 397.6 441.6 Consolidated $ 6,829.6 $ 6,279.2 $ 6,098.1

Separate Financial Information

Separate Financial Information of Subsidiary Guarantors of Indebtedness	12 Months Ended
	Sep. 30, 2017
Separate Financial Information of Subsidiary Guarantors of Indebtedness Disclosure Abstract
Separate Financial Information of Subsidiary Guarantors of Indebtedness	Separate Financial Information of Subsidiary Guarantors of Indebtedness The 2022 Senior Notes and the 2025 Senior Notes are jointly, severally, fully and unconditionally guaranteed on a senior unsecured basis by all of the Company’s 100% owned existing and future subsidiaries that from time to time guarantee obligations under the Credit Agreement, with certain exceptions (the “Guarantors”). Under the Indentures governing the 2022 Senior Notes and 2025 Senior Notes, a Guarantor’s guarantee of such Senior Notes will be automatically and unconditionally released and will terminate upon the following customary circumstances: (i) the sale of such Guarantor or substantially all of the assets of such Guarantor if such sale complies with the indenture; (ii) if such Guarantor no longer guarantees certain other indebtedness of the Company; or (iii) the defeasance or satisfaction and discharge of the Indenture. The following condensed supplemental consolidating financial information reflects the summarized financial information of Oshkosh Corporation, the Guarantors on a combined basis and Oshkosh Corporation’s non-guarantor subsidiaries on a combined basis (in millions): Condensed Consolidating Statement of Income and Comprehensive Income For the Year Ended September 30, 2017 Oshkosh Corporation Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total Net sales $ — $ 5,837.5 $ 1,181.7 $ (189.6 ) $ 6,829.6 Cost of sales 1.9 4,838.0 1,004.4 (189.1 ) 5,655.2 Gross income (loss) (1.9 ) 999.5 177.3 (0.5 ) 1,174.4 Selling, general and administrative expenses 136.5 424.2 104.9 — 665.6 Amortization of purchased intangibles — 38.4 7.4 — 45.8 Operating income (loss) (138.4 ) 536.9 65.0 (0.5 ) 463.0 Interest expense (56.9 ) (54.4 ) (2.2 ) 53.7 (59.8 ) Interest income 3.4 18.1 37.1 (53.7 ) 4.9 Miscellaneous, net 91.7 (179.6 ) 91.1 — 3.2 Income (loss) before income taxes (100.2 ) 321.0 191.0 (0.5 ) 411.3 Provision for (benefit from) income taxes (29.3 ) 93.7 63.0 (0.2 ) 127.2 Income (loss) before equity in earnings of affiliates (70.9 ) 227.3 128.0 (0.3 ) 284.1 Equity in earnings of consolidated subsidiaries 356.5 81.7 42.5 (480.7 ) — Equity in earnings of unconsolidated affiliates — — 1.5 — 1.5 Net income 285.6 309.0 172.0 (481.0 ) 285.6 Other comprehensive income (loss), net of tax 50.0 18.1 22.5 (40.6 ) 50.0 Comprehensive income $ 335.6 $ 327.1 $ 194.5 $ (521.6 ) $ 335.6 Condensed Consolidating Statement of Income and Comprehensive Income For the Year Ended September 30, 2016 Oshkosh Corporation Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total Net sales $ — $ 5,289.7 $ 1,119.4 $ (129.9 ) $ 6,279.2 Cost of sales 2.6 4,410.7 940.1 (130.0 ) 5,223.4 Gross income (loss) (2.6 ) 879.0 179.3 0.1 1,055.8 Selling, general and administrative expenses 121.8 390.7 99.9 — 612.4 Amortization of purchased intangibles — 38.6 13.9 — 52.5 Asset impairment charge — 26.9 — — 26.9 Operating income (loss) (124.4 ) 422.8 65.5 0.1 364.0 Interest expense (277.6 ) (63.3 ) (2.1 ) 282.6 (60.4 ) Interest income 1.7 89.5 193.5 (282.6 ) 2.1 Miscellaneous, net 60.8 (208.3 ) 148.8 — 1.3 Income (loss) before income taxes (339.5 ) 240.7 405.7 0.1 307.0 Provision for (benefit from) income taxes (108.8 ) 75.4 125.8 — 92.4 Income (loss) before equity in earnings of affiliates (230.7 ) 165.3 279.9 0.1 214.6 Equity in earnings of consolidated subsidiaries 447.4 101.5 77.9 (626.8 ) — Equity in earnings of unconsolidated affiliates (0.3 ) — 2.1 — 1.8 Net income 216.4 266.8 359.9 (626.7 ) 216.4 Other comprehensive income (loss), net of tax (30.6 ) (18.3 ) (6.2 ) 24.5 (30.6 ) Comprehensive income $ 185.8 $ 248.5 $ 353.7 $ (602.2 ) $ 185.8 Condensed Consolidating Statement of Income and Comprehensive Income For the Year Ended September 30, 2015 Oshkosh Corporation Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total Net sales $ — $ 5,127.7 $ 1,050.6 $ (80.2 ) $ 6,098.1 Cost of sales 0.4 4,321.7 816.7 (79.9 ) 5,058.9 Gross income (loss) (0.4 ) 806.0 233.9 (0.3 ) 1,039.2 Selling, general and administrative expenses 101.8 390.9 94.7 — 587.4 Amortization of purchased intangibles — 39.2 14.0 — 53.2 Operating income (loss) (102.2 ) 375.9 125.2 (0.3 ) 398.6 Interest expense (256.2 ) (53.8 ) (1.3 ) 241.2 (70.1 ) Interest income 1.6 67.4 174.7 (241.2 ) 2.5 Miscellaneous, net 25.7 (129.9 ) 99.3 — (4.9 ) Income (loss) before income taxes (331.1 ) 259.6 397.9 (0.3 ) 326.1 Provision for (benefit from) income taxes (106.4 ) 83.4 122.3 (0.1 ) 99.2 Income (loss) before equity in earnings of affiliates (224.7 ) 176.2 275.6 (0.2 ) 226.9 Equity in earnings of consolidated subsidiaries 454.4 129.2 149.7 (733.3 ) — Equity in earnings of unconsolidated affiliates (0.2 ) — 2.8 — 2.6 Net income 229.5 305.4 428.1 (733.5 ) 229.5 Other comprehensive income (loss), net of tax (75.2 ) (4.3 ) (67.7 ) 72.0 (75.2 ) Comprehensive income $ 154.3 $ 301.1 $ 360.4 $ (661.5 ) $ 154.3 Condensed Consolidating Balance Sheet As of September 30, 2017 Oshkosh Corporation Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total Assets Current assets: Cash and cash equivalents $ 399.5 $ 4.6 $ 42.9 $ — $ 447.0 Receivables, net 28.3 1,025.5 316.1 (63.6 ) 1,306.3 Inventories, net — 819.3 379.1 — 1,198.4 Other current assets 45.4 31.9 10.8 — 88.1 Total current assets 473.2 1,881.3 748.9 (63.6 ) 3,039.8 Investment in and advances to consolidated subsidiaries 3,138.3 1,340.4 (59.6 ) (4,419.1 ) — Intercompany receivables 48.0 261.6 1,971.8 (2,281.4 ) — Intangible assets, net — 909.5 611.3 — 1,520.8 Other long-term assets 69.1 242.9 226.3 — 538.3 Total assets $ 3,728.6 $ 4,635.7 $ 3,498.7 $ (6,764.1 ) $ 5,098.9 Liabilities and Shareholders' Equity Current liabilities: Accounts payable $ 11.6 $ 517.2 $ 176.4 $ (54.2 ) $ 651.0 Customer advances — 510.7 2.7 — 513.4 Other current liabilities 105.2 304.9 118.0 (9.4 ) 518.7 Total current liabilities 116.8 1,332.8 297.1 (63.6 ) 1,683.1 Long-term debt, less current maturities 807.9 — — — 807.9 Intercompany payables 452.9 1,780.5 48.0 (2,281.4 ) — Other long-term liabilities 43.6 134.1 122.8 — 300.5 Total shareholders’ equity 2,307.4 1,388.3 3,030.8 (4,419.1 ) 2,307.4 Total liabilities and shareholders' equity $ 3,728.6 $ 4,635.7 $ 3,498.7 $ (6,764.1 ) $ 5,098.9 Condensed Consolidating Balance Sheet As of September 30, 2016 Oshkosh Corporation Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total Assets Current assets: Cash and cash equivalents $ 285.4 $ 1.7 $ 34.8 $ — $ 321.9 Receivables, net 13.0 734.3 319.6 (45.0 ) 1,021.9 Inventories, net — 679.1 300.7 — 979.8 Other current assets 28.0 58.5 7.4 — 93.9 Total current assets 326.4 1,473.6 662.5 (45.0 ) 2,417.5 Investment in and advances to consolidated subsidiaries 6,148.2 1,253.6 (120.0 ) (7,281.8 ) — Intercompany receivables 48.0 1,353.7 4,632.2 (6,033.9 ) — Intangible assets, net — 947.5 609.5 — 1,557.0 Other long-term assets 87.3 232.7 219.3 — 539.3 Total assets $ 6,609.9 $ 5,261.1 $ 6,003.5 $ (13,360.7 ) $ 4,513.8 Liabilities and Shareholders' Equity Current liabilities: Accounts payable $ 13.3 $ 375.0 $ 122.6 $ (44.8 ) $ 466.1 Customer advances — 465.8 6.0 — 471.8 Other current liabilities 85.5 246.5 97.9 (0.2 ) 429.7 Total current liabilities 98.8 1,087.3 226.5 (45.0 ) 1,367.6 Long-term debt, less current maturities 826.2 — — — 826.2 Intercompany payables 3,639.4 2,346.5 48.0 (6,033.9 ) — Other long-term liabilities 69.0 147.9 126.6 — 343.5 Total shareholders’ equity 1,976.5 1,679.4 5,602.4 (7,281.8 ) 1,976.5 Total liabilities and shareholders' equity $ 6,609.9 $ 5,261.1 $ 6,003.5 $ (13,360.7 ) $ 4,513.8 Condensed Consolidating Statement of Cash Flows For the Year Ended September 30, 2017 Oshkosh Corporation Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total Net cash provided (used) by operating activities $ (49.5 ) $ 153.9 $ 142.1 $ — $ 246.5 Investing activities: Additions to property, plant and equipment (7.4 ) (53.2 ) (25.2 ) — (85.8 ) Additions to equipment held for rental — — (27.4 ) — (27.4 ) Proceeds from sale of equipment held for rental — — 49.5 — 49.5 Intercompany investing — 467.5 (122.2 ) (345.3 ) — Other investing activities (2.0 ) 0.5 — — (1.5 ) Net cash provided (used) by investing activities (9.4 ) 414.8 (125.3 ) (345.3 ) (65.2 ) Financing activities: Proceeds from issuance of debt (original maturities greater than three months) — — 5.9 — 5.9 Repayments of debt (original maturities greater than three months) (20.0 ) — (3.0 ) — (23.0 ) Repurchases of Common Stock (4.8 ) — — — (4.8 ) Dividends paid (62.8 ) — — — (62.8 ) Proceeds from exercise of stock options 39.9 — — — 39.9 Intercompany financing 220.7 (566.0 ) — 345.3 — Net cash provided (used) by financing activities 173.0 (566.0 ) 2.9 345.3 (44.8 ) Effect of exchange rate changes on cash — 0.2 (11.6 ) — (11.4 ) Increase in cash and cash equivalents 114.1 2.9 8.1 — 125.1 Cash and cash equivalents at beginning of year 285.4 1.7 34.8 — 321.9 Cash and cash equivalents at end of year $ 399.5 $ 4.6 $ 42.9 $ — $ 447.0 Condensed Consolidating Statement of Cash Flows For the Year Ended September 30, 2016 Oshkosh Corporation Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total Net cash provided (used) by operating activities $ (211.3 ) $ 466.7 $ 328.5 $ — $ 583.9 Investing activities: Additions to property, plant and equipment (22.4 ) (40.4 ) (29.7 ) — (92.5 ) Additions to equipment held for rental — — (34.8 ) — (34.8 ) Proceeds from sale of equipment held for rental — 0.6 39.6 — 40.2 Intercompany investing (0.7 ) (405.8 ) (297.2 ) 703.7 — Other investing activities (2.0 ) (0.1 ) — — (2.1 ) Net cash used by investing activities (25.1 ) (445.7 ) (322.1 ) 703.7 (89.2 ) Financing activities: Proceeds from issuance of debt (original maturities greater than three months) 320.0 — 3.5 — 323.5 Repayments of debt (original maturities greater than three months) (370.0 ) — (3.5 ) — (373.5 ) Net decrease in short-term debt (33.5 ) — — — (33.5 ) Repurchases of Common Stock (106.3 ) — — — (106.3 ) Dividends paid (55.9 ) — — — (55.9 ) Proceeds from exercise of stock options 21.7 — — — 21.7 Excess tax benefit from stock-based compensation 2.0 — — — 2.0 Intercompany financing 729.0 (26.0 ) 0.7 (703.7 ) — Net cash provided (used) by financing activities 507.0 (26.0 ) 0.7 (703.7 ) (222.0 ) Effect of exchange rate changes on cash — 0.4 5.9 — 6.3 Increase (decrease) in cash and cash equivalents 270.6 (4.6 ) 13.0 — 279.0 Cash and cash equivalents at beginning of year 14.8 6.3 21.8 — 42.9 Cash and cash equivalents at end of year $ 285.4 $ 1.7 $ 34.8 $ — $ 321.9 Condensed Consolidating Statement of Cash Flows For the Year Ended September 30, 2015 Oshkosh Corporation Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total Net cash provided (used) by operating activities $ (169.9 ) $ 58.5 $ 202.8 $ — $ 91.4 Investing activities: Additions to property, plant and equipment (29.3 ) (27.9 ) (74.5 ) — (131.7 ) Additions to equipment held for rental — — (26.3 ) — (26.3 ) Acquisition of a business, net of cash acquired — — (10.0 ) — (10.0 ) Proceeds from sale of equipment held for rental — — 26.8 — 26.8 Intercompany investing (30.7 ) (2.8 ) (154.2 ) 187.7 — Other investing activities 0.7 0.9 (0.5 ) — 1.1 Net cash used by investing activities (59.3 ) (29.8 ) (238.7 ) 187.7 (140.1 ) Financing activities: Proceeds from issuance of debt (original maturities greater than three months) 375.0 — — — 375.0 Repayments of debt (original maturities greater than three months) (365.0 ) — — — (365.0 ) Net increase in short-term debt 33.5 — — — 33.5 Debt issuance costs (15.5 ) — — — (15.5 ) Repurchases of Common Stock (209.3 ) — — — (209.3 ) Dividends paid (53.1 ) — — — (53.1 ) Proceeds from exercise of stock options 8.6 — — — 8.6 Excess tax benefit from stock-based compensation 4.0 — — — 4.0 Intercompany financing 184.0 (26.0 ) 29.7 (187.7 ) — Net cash provided (used) by financing activities (37.8 ) (26.0 ) 29.7 (187.7 ) (221.8 ) Effect of exchange rate changes on cash — (1.1 ) 0.7 — (0.4 ) Increase (decrease) in cash and cash equivalents (267.0 ) 1.6 (5.5 ) — (270.9 ) Cash and cash equivalents at beginning of year 281.8 4.7 27.3 — 313.8 Cash and cash equivalents at end of year $ 14.8 $ 6.3 $ 21.8 $ — $ 42.9

Unaudited Quarterly Results

Unaudited Quarterly Results	12 Months Ended
	Sep. 30, 2017
Quarterly Financial Information Disclosure [Abstract]
Unaudited Quarterly Results	Unaudited Quarterly Results (in millions, except per share amounts) Fiscal Year Ended September 30, 2017 4th Quarter (a) 3rd Quarter (b) 2nd Quarter (c) 1st Quarter (d) Net sales $ 1,963.0 $ 2,036.9 $ 1,618.3 $ 1,211.4 Gross income 326.5 386.9 261.3 199.7 Operating income 134.5 211.9 80.4 36.2 Net income 93.5 128.6 44.3 19.2 Earnings per share: Basic $ 1.25 $ 1.72 $ 0.59 $ 0.26 Diluted $ 1.23 $ 1.69 $ 0.58 $ 0.26 Common Stock per share dividends $ 0.21 $ 0.21 $ 0.21 $ 0.21 _________________________ (a) The fourth quarter of fiscal 2017 was impacted by restructuring-related charges of $15.8 million ( $11.5 million after-tax) in the access equipment segment. (b) The third quarter of fiscal 2017 was impacted by restructuring-related charges of $11.1 million ( $11.5 million after-tax) in the access equipment segment. (c) The second quarter of fiscal 2017 was impacted by restructuring-related charges of $17.6 million ( $14.0 million after-tax) in the access equipment segment. (d) The first quarter of fiscal 2017 was impacted by restructuring-related charges of $0.7 million ( $0.4 million after-tax) in the access equipment segment. Fiscal Year Ended September 30, 2016 4th Quarter (a) 3rd Quarter 2nd Quarter 1st Quarter Net sales $ 1,755.4 $ 1,747.5 $ 1,524.3 $ 1,252.0 Gross income 299.1 314.6 259.3 182.8 Operating income 95.5 146.8 91.4 30.3 Net income 61.5 84.2 56.1 14.6 Earnings per share: Basic $ 0.83 $ 1.15 $ 0.77 $ 0.20 Diluted $ 0.82 $ 1.13 $ 0.76 $ 0.19 Common Stock per share dividends $ 0.19 $ 0.19 $ 0.19 $ 0.19 _________________________ (a) The fourth quarter of fiscal 2016 was impacted by a combined $27.8 million ( $17.5 million after-tax) asset impairment and workforce reduction charge in the access equipment segment.

SCHEDULE II - VALUATION AND QUA

SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS	12 Months Ended
	Sep. 30, 2017
Valuation and Qualifying Accounts [Abstract]
SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS	OSHKOSH CORPORATION VALUATION AND QUALIFYING ACCOUNTS Allowance for Doubtful Accounts Years Ended September 30, 2017, 2016 and 2015 (In millions) Fiscal Year Balance at Beginning of Year Additions Charged to Expense Reductions* Balance at End of Year 2015 $ 21.8 $ 2.0 $ (3.5 ) $ 20.3 2016 $ 20.3 $ 2.7 $ (1.8 ) $ 21.2 2017 $ 21.2 $ 0.8 $ (3.7 ) $ 18.3 _________________________ * Represents amounts written off to the reserve, net of recoveries and foreign currency translation adjustments.

Summary of Significant Accoun34

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Sep. 30, 2017
Accounting Policies [Abstract]
Principles of Consolidation and Presentation	Principles of Consolidation and Presentation — The consolidated financial statements include the accounts of Oshkosh and all of its majority-owned or controlled subsidiaries and are prepared in conformity with generally accepted accounting principles in the United States of America (U.S. GAAP). All intercompany accounts and transactions have been eliminated in consolidation.
Use of Estimates	Use of Estimates — The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.
Revenue Recognition	Revenue Recognition — The Company recognizes revenue on equipment and parts sales when contract terms are met, collectability is reasonably assured and a product is shipped or risk of ownership has been transferred to and accepted by the customer. Revenue from service agreements is recognized as earned, when services have been rendered. Appropriate provisions are made for discounts, returns and sales allowances. Sales are recorded net of amounts invoiced for taxes imposed on the customer such as excise or value-added taxes. Sales to the U.S. government of non-commercial products manufactured to the government’s specifications are recognized under percentage-of-completion accounting using either the units-of-delivery method or cost-to-cost method to measure contract performance. Under the units-of-delivery method, the Company records sales as units are accepted by the U.S. Department of Defense (DoD), generally based on unit sales values stated in the respective contracts. Costs of sales are based on actual costs incurred to produce the units delivered under the contract. Under the cost-to-cost method, sales and estimated margins are recognized as contract costs are incurred. The measurement method selected is generally determined based on the nature of the contract. The Company includes amounts representing contract change orders, claims or other items in sales only when they can be reliably estimated and realization is probable. Bid and proposal costs are expensed as incurred. The Company has significant experience in contracting and producing vehicles for the defense industry, which has resulted in a history of making reasonable estimates of revenues and costs when measuring progress toward contract completion. The Company charges anticipated losses on contracts or programs in progress to earnings when identified. Approximately 16% , 19% and 13% of the Company’s revenues were recognized under the percentage-of-completion accounting method in fiscal 2017 , 2016 and 2015 , respectively. The Company invoices the government as the units are formally accepted. Deferred revenue arises from amounts received in advance of the culmination of the earnings process and is recognized as revenue in future periods when the applicable revenue recognition criteria have been met. In fiscal 2017, changes in estimates on contracts accounted for under the cost-to-cost method on prior year revenues increased defense segment operating income by $6.3 million , net income by $3.9 million and earnings per share by $0.05 .
Shipping and Handling Fees and Costs	Shipping and Handling Fees and Costs — Revenue received from shipping and handling fees is reflected in net sales. Shipping and handling fee revenue was not significant for any period presented. Shipping and handling costs are included in cost of sales.
Warranty	Warranty — Provisions for estimated warranty and other related costs are recorded in cost of sales at the time of sale and are periodically adjusted to reflect actual experience. The amount of warranty liability accrued reflects management’s best estimate of the expected future cost of honoring Company obligations under the warranty plans. Historically, the cost of fulfilling the Company’s warranty obligations has principally involved replacement parts, labor and sometimes travel for any field retrofit campaigns. The Company’s estimates are based on historical experience, the extent of pre-production testing, the number of units involved and the extent of features/components included in product models. Also, each quarter, the Company reviews actual warranty claims experience to determine if there are systemic defects that would require a field campaign. The Company recognizes the revenue from sales of extended warranties over the life of the contracts.
Research and Development and Similar Costs	Research and Development and Similar Costs — Except for customer sponsored research and development costs incurred pursuant to contracts (generally with the DoD), research and development costs are expensed as incurred and included in cost of sales. Research and development costs charged to expense amounted to $98.0 million , $103.1 million and $147.9 million during fiscal 2017 , 2016 and 2015 , respectively. Customer sponsored research and development costs incurred pursuant to contracts are accounted for as contract costs.
Advertising	Advertising — Advertising costs are included in selling, general and administrative expense and are expensed as incurred. These expenses totaled $23.0 million , $21.6 million and $22.1 million in fiscal 2017 , 2016 and 2015 , respectively.
Stock-based Compensation	Stock-Based Compensation — The Company recognizes stock-based compensation using the fair value provisions prescribed by Accounting Standards Codification (ASC) Topic 718, Compensation — Stock Compensation . Accordingly, compensation costs for awards of stock-based compensation settled in shares are determined based on the fair value of the share-based instrument at the time of grant and are recognized as expense over the vesting period of the share-based instrument. See Note 15 of the Notes to Consolidated Financial Statements for information regarding the Company’s stock-based incentive plans.
Debt Financing Costs	Debt Financing Costs — Debt issuance costs on term debt are amortized using the interest method over the term of the debt. Deferred financing costs on lines of credit are amortized on a straight-line basis over the term of the related lines of credit. Amortization expense was $3.0 million , $3.0 million and $6.4 million (including $3.3 million of amortization related to early debt retirement) in fiscal 2017 , 2016 and 2015 , respectively.
Income Taxes	Income Taxes — Deferred income taxes are provided to recognize temporary differences between the financial reporting basis and the income tax basis of the Company’s assets and liabilities using currently enacted tax rates and laws. Valuation allowances are established when necessary to reduce deferred tax assets to the amount expected to be realized. In assessing the realizability of deferred tax assets, management considers whether it is more likely than not that some portion or all of the deferred tax assets will not be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income during the periods in which those temporary differences become deductible. Management considers the scheduled reversal of deferred tax liabilities, projected future taxable income and tax planning strategies in making this assessment. The Company evaluates uncertain income tax positions in a two -step process. The first step is recognition, where the Company evaluates whether an individual tax position has a likelihood of greater than 50% of being sustained upon examination based on the technical merits of the position, including resolution of any related appeals or litigation processes. For tax positions that are currently estimated to have a less than 50% likelihood of being sustained, zero tax benefit is recorded. For tax positions that have met the recognition threshold in the first step, the Company performs the second step of measuring the benefit to be recorded. The actual benefits ultimately realized may differ from the Company’s estimates. In future periods, changes in facts and circumstances and new information may require the Company to change the recognition and measurement estimates with regard to individual tax positions. Changes in recognition and measurement estimates are recorded in results of operations and financial position in the period in which such changes occur.
Fair Value of Financial Instruments	Fair Value of Financial Instruments — Based on Company estimates, the carrying amounts of cash equivalents, receivables, accounts payable and accrued liabilities approximated fair value as of September 30, 2017 and 2016 . See Notes 9, 14 and 17 of the Notes to Consolidated Financial Statements for additional fair value information.
Cash and Cash Equivalents	Cash and Cash Equivalents — The Company considers all highly liquid investments with a maturity of three months or less when purchased to be cash equivalents. Cash equivalents at September 30, 2017 consisted principally of bank deposits and money market instruments.
Receivables	Receivables — Receivables consist of amounts billed and currently due from customers and unbilled costs and accrued profits related to revenues on long-term contracts with the U.S. government that have been recognized for accounting purposes but not yet billed to customers. The Company extends credit to customers in the normal course of business and maintains an allowance for estimated losses resulting from the inability or unwillingness of customers to make required payments. The accrual for estimated losses is based on the Company’s historical experience, existing economic conditions and any specific customer collection issues the Company has identified. Account balances are charged against the allowance when the Company determines it is probable the receivable will not be recovered.
Concentration of Credit Risk	Concentration of Credit Risk — Financial instruments that potentially subject the Company to significant concentrations of credit risk consist principally of cash equivalents, trade accounts receivable and guarantees of certain customers’ obligations under deferred payment contracts and lease purchase agreements. The Company maintains cash and cash equivalents, and other financial instruments, with various major financial institutions. The Company performs periodic evaluations of the relative credit standing of these financial institutions and limits the amount of credit exposure with any institution. Concentration of credit risk with respect to trade accounts and lease receivables is limited due to the large number of customers and their dispersion across many geographic areas. However, a significant amount of trade and lease receivables are with the U.S. government, with rental companies globally, with companies in the ready-mix concrete industry, with municipalities and with several large waste haulers in the United States. The Company continues to monitor credit risk associated with its trade receivables.
Inventories	Inventories — Inventories are stated at the lower of cost or market. Cost has been determined using the last-in, first-out (LIFO) method for 82.2% of the Company’s inventories at September 30, 2017 and 81.6% of the Company's inventories at September 30, 2016 . For the remaining inventories, cost has been determined using the first-in, first-out (FIFO) method.
Property, Plant and Equipment	Property, Plant and Equipment — Property, plant and equipment are recorded at cost. Depreciation expense is recognized over the estimated useful lives of the respective assets using accelerated and straight-line methods. The estimated useful lives range from ten to forty years for buildings and improvements, from four to twenty-five years for machinery and equipment and from three to ten years for software and related costs. The Company capitalizes interest on borrowings during the active construction period of major capital projects. All capitalized interest has been added to the cost of the underlying assets and is amortized over the useful lives of the assets.
Goodwill	Goodwill — Goodwill reflects the cost of an acquisition in excess of the aggregate fair value assigned to identifiable net assets acquired. Goodwill is not amortized; however, it is assessed for impairment at least annually and as triggering events or “indicators of potential impairment” occur. The Company performs its annual impairment test as of July 1 of each fiscal year. The Company evaluates the recoverability of goodwill by estimating the fair value of the businesses to which the goodwill relates. Estimated cash flows and related goodwill are grouped at the reporting unit level. A reporting unit is an operating segment or, under certain circumstances, a component of an operating segment. When the fair value of the reporting unit is less than the carrying value of the reporting unit, a further analysis is performed to measure and recognize the amount of the impairment loss, if any. Impairment losses, limited to the carrying value of goodwill, represent the excess of the carrying amount of a reporting unit’s goodwill over the implied fair value of that goodwill. In evaluating the recoverability of goodwill, it is necessary to estimate the fair value of the reporting units. The Company evaluates the recoverability of goodwill utilizing the income approach and the market approach. The Company weighted the income approach more heavily ( 75% ) as the Company believes the income approach more accurately considers long-term fluctuations in the U.S. and European construction markets than the market approach. Under the income approach, the Company determines fair value based on estimated future cash flows discounted by an estimated weighted-average cost of capital, which reflects the overall level of inherent risk of a reporting unit and the rate of return an outside investor would expect to earn. Estimated future cash flows are based on the Company’s internal projection models, industry projections and other assumptions deemed reasonable by management. Rates used to discount estimated cash flows correspond to the Company’s cost of capital, adjusted for risk where appropriate, and are dependent upon interest rates at a point in time. There are inherent uncertainties related to these factors and management’s judgment in applying them to the analysis of goodwill impairment. Under the market approach, the Company derives the fair value of its reporting units based on revenue and earnings multiples of comparable publicly-traded companies. It is possible that assumptions underlying the impairment analysis will change in such a manner that impairment in value may occur in the future.
Impairment of Long-Lived Assets	Impairment of Long-Lived Assets — Property, plant and equipment and amortizable intangible assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. If the sum of the expected undiscounted cash flows is less than the carrying value of the related asset or group of assets, a loss is recognized for the difference between the fair value and carrying value of the asset or group of assets. Non-amortizable trade names are assessed for impairment at least annually and as triggering events or “indicators of potential impairment” occur. The Company performs its annual impairment test in the fourth quarter of its fiscal year. The Company evaluates the potential impairment by estimating the fair value of the non-amortizing intangible assets using the “relief from royalty” method. When the fair value of the non-amortizable trade name is less than the carrying value of the trade name, a further analysis is performed to measure and recognize the amount of the impairment loss, if any. Impairment losses, limited to the carrying value of the non-amortizable trade name, represent the excess of the carrying amount over the implied fair value of that non-amortizable trade name.
Customer Advances	Customer Advances — Customer advances include amounts received in advance of the completion of fire & emergency and commercial vehicles. Most of these advances bear interest at variable rates approximating the prime rate. Advances also include any performance-based payments received from the DoD in excess of the value of related inventory.
Other Long-Term Liabilities	Other Long-Term Liabilities — Other long-term liabilities are comprised principally of the portions of the Company's pension liability, other post-employment benefit liability, accrued warranty and accrued product liability that are not expected to be settled in the subsequent twelve month period.
Foreign Currency Translation	Foreign Currency Translation — All balance sheet accounts have been translated into U.S. dollars using the exchange rates in effect at the balance sheet date. Income statement amounts have been translated using the average exchange rate during the period in which the transactions occurred. Resulting translation adjustments are included in “Accumulated other comprehensive income (loss).” Foreign currency transaction gains or losses are included in “Miscellaneous, net” in the Consolidated Statements of Income. The Company recorded a net foreign currency transaction gain of $0.2 million in fiscal 2017 and net foreign currency transaction losses of $1.2 million and $4.5 million in fiscal 2016 and 2015 , respectively.
Derivative Financial Instruments	Derivative Financial Instruments — The Company recognizes all derivative financial instruments, such as foreign exchange contracts, in the consolidated financial statements at fair value regardless of the purpose or intent for holding the instrument. Changes in the fair value of derivative financial instruments are either recognized periodically in income or in equity as a component of comprehensive income depending on whether the derivative financial instrument qualifies for hedge accounting, and if so, whether it qualifies as a fair value hedge or cash flow hedge. Generally, changes in fair values of derivatives accounted for as fair value hedges are recorded in income along with the portions of the changes in the fair values of the hedged items that relate to the hedged risks. Changes in fair values of derivatives accounted for as cash flow hedges, to the extent they are effective as hedges, are recorded in other comprehensive income, net of deferred income taxes. Changes in fair value of derivatives not qualifying as hedges are reported in income. Cash flows from derivatives that are accounted for as cash flow or fair value hedges are included in the Consolidated Statements of Cash Flows in the same category as the item being hedged.
Reclassification	Reclassifications — Certain reclassifications have been made to the fiscal 2016 financial statements to conform with the fiscal 2017 presentation. “Deferred income tax liabilities,” which was previously presented as a separate line in the Consolidated Balance Sheets, are now reported in “Other long-term liabilities.”
Recent Accounting Pronouncements	Recent Accounting Pronouncements — In May 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standard Update (ASU) 2014-09, Revenue from Contracts with Customers (Topic 606) , and the FASB has since issued several amendments to this standard, which clarifies the principles for recognizing revenue. This guidance requires an entity to recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The standard supersedes all existing U.S. GAAP guidance on revenue recognition and is expected to require the use of more judgment and result in additional disclosures. The new standard is effective for annual reporting periods beginning after December 15, 2017. Early adoption is permitted. The Company plans to adopt the standard on October 1, 2018. The Company has assembled a cross-functional team with representation from all business units that is dedicated to the implementation of this new accounting standard. The team, with the support of a project management office, is currently focused on executing a multi-phase program plan that will culminate with the adoption of the standard . The Company's Audit Committee has been receiving regular briefings on the implementation team's progress and potential implications related to adoption of the new standard. The Company has elected to adopt the new revenue recognition standard following the modified retrospective approach, as permitted by the standard. This approach will result in an adjustment to retained earnings for the cumulative effect of initially applying the new standard on its adoption date. The extent of changes that will be necessary to comply with the requirements of the new standard, as well as its financial impact remain under evaluation. In July 2015, the FASB issued ASU 2015-11, Inventory (Topic 330), Simplifying the Measurement of Inventory . ASU 2015-11 is part of the FASB’s initiative to simplify accounting standards. The guidance requires an entity to recognize inventory within the scope of the standard at the lower of cost or net realizable value. Net realizable value is the estimated selling price in the ordinary course of business, less reasonably predictable costs of completion, disposal and transportation. The Company will be required to adopt ASU 2015-11 as of October 1, 2017. The adoption is not expected to have a material effect on the Company’s consolidated financial statements. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842), which requires lessees to reflect most leases on their balance sheet as lease liabilities with a corresponding right-of-use asset, while leaving presentation of lease expense in the statement of income largely unchanged. The standard also eliminates the real-estate specific provisions that exist under current U.S. GAAP and modifies the classification criteria and accounting lessors must apply to sales-type and direct financing leases. The Company will be required to adopt ASU 2016-02 as of October 1, 2019. Early adoption is permitted. The Company is currently evaluating the impact of ASU 2016-02 on the Company's consolidated financial statements. In March 2016, the FASB issued ASU 2016-09, Compensation - Stock Compensation (Topic 718), Improvements to Employee Share-Based Payment Accounting . ASU 2016-09 is part of the FASB's initiative to simplify accounting standards. The standard requires that all tax effects of share-based payments at settlement (or expiration) be recorded in the income statement at the time the tax effects arise. The standard also clarifies that cash flows resulting from share-based payments be reported as operating activities within the statement of cash flows, permits employers to withhold shares upon settlement of an award to satisfy an employee's tax liability up to the employee's maximum individual tax rate in the relevant jurisdiction without resulting in liability classification of the award and permits entities to make an accounting policy election to estimate or use actual forfeitures when recognizing the expense of share-based compensation. The Company adopted ASU 2016-09 as of October 1, 2016 following a prospective approach for the income tax and earnings per share impacts and a retrospective approach for the cash flow impacts. The adoption of ASU 2016-09 resulted in $6.2 million and $8.9 million of cash outflows related to shares tendered for taxes on stock-based compensation being reclassified from operating cash flows to financing cash flows in fiscal 2016 and 2015 , respectively. In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326), Measurement of Credit Losses on Financial Instruments . The standard requires a change in the measurement approach for credit losses on financial assets measured on an amortized cost basis from an incurred loss method to an expected loss method, thereby eliminating the requirement that a credit loss be considered probable to impact the valuation of a financial asset measured on an amortized cost basis. The standard requires the measurement of expected credit losses to be based on relevant information about past events, including historical experience, current conditions, and a reasonable and supportable forecast that affects the collectibility of the related financial asset. The Company will be required to adopt ASU 2016-13 as of October 1, 2020. Early adoption is permitted. The Company is currently evaluating the impact of ASU 2016-13 on the Company's consolidated financial statements. In October 2016, the FASB issued ASU 2016-16, Income Taxes (Topic 740), Intra-Entity Transfers of Assets Other Than Inventory . The standard requires that an entity recognize the income tax consequences of an intra-entity transfer of an asset when the transfer occurs as opposed to when the asset is transferred to an outside party as required under current U.S. GAAP. The standard does not apply to intra-entity transfers of inventory, which will continue to follow current U.S. GAAP. The Company will be required to adopt ASU 2016-16 as of October 1, 2018. Early adoption is permitted. The Company is currently evaluating the impact of ASU 2016-16 on the Company's consolidated financial statements. In January 2017, the FASB issued ASU 2017-04, Intangibles - Goodwill and Other (Topic 350), Simplifying the Test for Goodwill Impairment. The standard simplifies the measurement of goodwill impairment by eliminating the requirement that an entity compute the implied fair value of goodwill based on the fair values of its assets and liabilities to measure impairment. Instead, goodwill impairment will be measured as the difference between the fair value of the reporting unit and the carrying value of the reporting unit. The standard also clarifies the treatment of the income tax effect of tax deductible goodwill when measuring goodwill impairment loss. The Company will be required to adopt ASU 2017-04 as of October 1, 2020. Early adoption is permitted. The Company is currently evaluating the impact of ASU 2017-04 on the Company's consolidated financial statements. In March 2017, the FASB issued ASU 2017-07, Compensation - Retirement Benefits (Topic 715), Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost. The standard requires that an entity report the service cost component of net periodic pension and postretirement cost in the same line item or items as other compensation costs arising from services rendered by the pertinent employees during the period. The remaining components of net benefit costs are required to be presented in the income statement separately from the service component and outside a subtotal of income from operations, if one is presented. The amendment further allows only the service cost component of net periodic pension and postretirement costs to be eligible for capitalization, when applicable. The Company will be required to adopt ASU 2017-07 as of October 1, 2018. Early adoption is permitted. The Company is currently evaluating the impact of ASU 2017-07 on the Company's consolidated financial statements. In August 2017, the FASB issued ASU 2017-12, Derivatives and Hedging (Topic 815), Targeted Improvements to Accounting for Hedging Activities . The standard more closely aligns hedge accounting with risk management strategies, simplifies the application of hedge accounting, and increases transparency as to the scope and results of hedging programs. The amendments expand and refine hedge accounting for both nonfinancial and financial risk components and align the recognition and presentation of the effects of the hedging instrument and the hedged item in the financial statements. The Company will be required to adopt ASU 2017-12 as of October 1, 2020. Early adoption is permitted. The Company is currently evaluating the impact of ASU 2017-12 on the Company's consolidated financial statements.

Receivables (Tables)

Receivables (Tables)	12 Months Ended
	Sep. 30, 2017
Receivables [Abstract]
Schedule of receivables	Receivables consisted of the following (in millions): September 30, 2017 2016 U.S. government: Amounts billed $ 137.8 $ 49.0 Cost and profits not billed 137.9 55.3 275.7 104.3 Other trade receivables 985.4 881.8 Finance receivables 5.8 7.6 Notes receivable 34.2 36.1 Other receivables 46.3 38.6 1,347.4 1,068.4 Less allowance for doubtful accounts (18.3 ) (21.2 ) $ 1,329.1 $ 1,047.2
Classification of receivables in the Consolidated Balance Sheets	Classification of receivables in the Consolidated Balance Sheets consisted of the following (in millions): September 30, 2017 2016 Current receivables $ 1,306.3 $ 1,021.9 Long-term receivables (included in “Other long-term assets”) 22.8 25.3 $ 1,329.1 $ 1,047.2
Schedule of finance and notes receivable aging and accrual status	Finance and notes receivable accrual status consisted of the following (in millions): September 30, Finance Receivables Notes Receivables 2017 2016 2017 2016 Aging of receivables that are past due: Greater than 30 days and less than 60 days $ — $ — $ — $ — Greater than 60 days and less than 90 days — — — — Greater than 90 days 2.1 2.9 0.2 — Receivables on nonaccrual status 3.7 4.5 21.3 25.1 Receivables past due 90 days or more and still accruing — — — — Receivables subject to general reserves 2.1 3.1 — — Allowance for doubtful accounts — (0.1 ) — — Receivables subject to specific reserves 3.7 4.5 34.2 36.1 Allowance for doubtful accounts (1.5 ) (0.9 ) (10.0 ) (13.0 )
Schedule of changes in the allowance for doubtful accounts	Changes in the Company’s allowance for doubtful accounts by type of receivable were as follows (in millions): Fiscal Year Ended September 30, 2017 Finance Receivables Notes Receivable Trade and Other Receivables Total Allowance for doubtful accounts at beginning of year $ 1.0 $ 13.0 $ 7.2 $ 21.2 Provision for doubtful accounts, net of recoveries 1.4 (1.3 ) 0.7 0.8 Charge-off of accounts (0.9 ) (2.2 ) (1.1 ) (4.2 ) Foreign currency translation — 0.5 — 0.5 Allowance for doubtful accounts at end of year $ 1.5 $ 10.0 $ 6.8 $ 18.3 Fiscal Year Ended September 30, 2016 Finance Receivables Notes Receivable Trade and Other Receivables Total Allowance for doubtful accounts at beginning of year $ 0.1 $ 12.7 $ 7.5 $ 20.3 Provision for doubtful accounts, net of recoveries 0.9 1.3 0.5 2.7 Charge-off of accounts — (1.0 ) (0.9 ) (1.9 ) Foreign currency translation — — 0.1 0.1 Allowance for doubtful accounts at end of year $ 1.0 $ 13.0 $ 7.2 $ 21.2

Inventories (Tables)

Inventories (Tables)	12 Months Ended
	Sep. 30, 2017
Inventory Disclosure [Abstract]
Schedule of inventory	Inventories consisted of the following (in millions): September 30, 2017 2016 Raw materials $ 578.1 $ 481.2 Partially finished products 336.6 307.8 Finished products 398.1 286.9 Inventories at FIFO cost 1,312.8 1,075.9 Less: Progress/performance-based payments on U.S. government contracts (31.6 ) (17.8 ) Excess of FIFO cost over LIFO cost (82.8 ) (78.3 ) $ 1,198.4 $ 979.8

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	12 Months Ended
	Sep. 30, 2017
Property, Plant and Equipment [Abstract]
Schedule of property, plant and equipment	Property, plant and equipment consisted of the following (in millions): September 30, 2017 2016 Land and land improvements $ 58.5 $ 56.8 Buildings 298.5 283.4 Machinery and equipment 652.2 597.3 Software and related costs 149.6 147.4 Equipment on operating lease to others 30.0 25.7 1,188.8 1,110.6 Less accumulated depreciation (718.9 ) (658.5 ) $ 469.9 $ 452.1

Goodwill and Purchased Intang38

Goodwill and Purchased Intangible Assets (Tables)	12 Months Ended
	Sep. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of changes in goodwill	The following table presents changes in goodwill during fiscal 2017 and 2016 (in millions): Access Equipment Fire & Emergency Commercial Total Net goodwill at September 30, 2015 $ 874.2 $ 106.1 $ 20.8 $ 1,001.1 Foreign currency translation 2.4 — — 2.4 Net goodwill at September 30, 2016 876.6 106.1 20.8 1,003.5 Foreign currency translation 9.3 — 0.2 9.5 Net goodwill at September 30, 2017 $ 885.9 $ 106.1 $ 21.0 $ 1,013.0
Schedule of company's goodwill allocated to the reportable segments	The following table presents details of the Company’s goodwill allocated to the reportable segments (in millions): September 30, 2017 September 30, 2016 Gross Accumulated Impairment Net Gross Accumulated Impairment Net Access Equipment $ 1,818.0 $ (932.1 ) $ 885.9 $ 1,808.7 $ (932.1 ) $ 876.6 Fire & Emergency 108.1 (2.0 ) 106.1 108.1 (2.0 ) 106.1 Commercial 196.9 (175.9 ) 21.0 196.7 (175.9 ) 20.8 $ 2,123.0 $ (1,110.0 ) $ 1,013.0 $ 2,113.5 $ (1,110.0 ) $ 1,003.5
Schedule of purchased intangible assets	Details of the Company’s total purchased intangible assets were as follows (in millions): September 30, 2017 Weighted- Average Life Gross Accumulated Amortization Net Amortizable intangible assets: Distribution network 39.1 $ 55.4 $ (29.5 ) $ 25.9 Technology-related 11.9 104.7 (99.7 ) 5.0 Customer relationships 12.8 555.0 (467.6 ) 87.4 Other 16.3 16.4 (14.7 ) 1.7 14.4 731.5 (611.5 ) 120.0 Non-amortizable trade names 387.8 — 387.8 $ 1,119.3 $ (611.5 ) $ 507.8 September 30, 2016 Weighted- Average Life Gross Accumulated Amortization Net Amortizable intangible assets: Distribution network 39.1 $ 55.4 $ (28.0 ) $ 27.4 Technology-related 11.9 104.7 (91.5 ) 13.2 Customer relationships 12.8 550.8 (427.4 ) 123.4 Other 16.3 16.5 (14.7 ) 1.8 14.5 727.4 (561.6 ) 165.8 Non-amortizable trade names 387.7 — 387.7 $ 1,115.1 $ (561.6 ) $ 553.5

Other Long-Term Assets (Tables)

Other Long-Term Assets (Tables)	12 Months Ended
	Sep. 30, 2017
Other Assets, Noncurrent Disclosure [Abstract]
Schedule of other long-term assets	Other long-term assets consisted of the following (in millions): September 30, 2017 2016 Rabbi trust, less current portion $ 20.6 $ 20.5 Customer notes receivable 25.7 30.8 Deferred income taxes, net 4.2 8.4 Investments in unconsolidated affiliates 15.5 14.9 Other 11.0 24.4 77.0 99.0 Less allowance for doubtful notes receivable (8.6 ) (11.8 ) $ 68.4 $ 87.2

Credit Agreements (Tables)

Credit Agreements (Tables)	12 Months Ended
	Sep. 30, 2017
Debt Disclosure [Abstract]
Schedule of debt instruments	The Company was obligated under the following debt instruments (in millions): September 30, 2017 Principal Debt Issuance Costs Debt, Net Senior Secured Term Loan $ 335.0 $ (0.8 ) $ 334.2 5.375% Senior notes due March 2022 250.0 (3.5 ) 246.5 5.375% Senior notes due March 2025 250.0 (2.8 ) 247.2 $ 835.0 $ (7.1 ) 827.9 Less current maturities (20.0 ) $ 807.9 Revolving Credit Facility $ — Other short-term debt 3.0 Current maturities of long-term debt 20.0 $ 23.0 September 30, 2016 Principal Debt Issuance Costs Debt, Net Senior Secured Term Loan $ 355.0 $ (1.4 ) $ 353.6 5.375% Senior notes due March 2022 250.0 (4.3 ) 245.7 5.375% Senior notes due March 2025 250.0 (3.1 ) 246.9 $ 855.0 $ (8.8 ) 846.2 Less current maturities (20.0 ) $ 826.2 Revolving Credit Facility $ — Current maturities of long-term debt 20.0 $ 20.0

Warranties (Tables)

Warranties (Tables)	12 Months Ended
	Sep. 30, 2017
Product Warranties Disclosures [Abstract]
Schedule of changes in warranty liability	Changes in the Company’s warranty liability and unearned extended warranty premiums were as follows (in millions): Fiscal Year Ended September 30, 2017 2016 Balance at beginning of year $ 89.6 $ 92.1 Warranty provisions 57.4 45.9 Settlements made (51.8 ) (52.5 ) Changes in liability for pre-existing warranties, net 2.5 0.9 Premiums received 12.4 14.8 Amortization of premiums received (12.0 ) (11.3 ) Foreign currency translation 0.7 (0.3 ) Balance at end of year $ 98.8 $ 89.6

Guarantee Arrangements (Tables)

Guarantee Arrangements (Tables)	12 Months Ended
	Sep. 30, 2017
Guarantees [Abstract]
Schedule of provision for losses on customer guarantees	Changes in the Company’s credit guarantee liability were as follows (in millions): Fiscal Year Ended September 30, 2017 2016 Balance at beginning of year $ 8.4 $ 5.6 Provision for new credit guarantees 3.2 4.1 Changes for pre-existing guarantees, net 0.5 1.7 Amortization of previous guarantees (3.1 ) (3.0 ) Foreign currency translation 0.1 — Balance at end of year $ 9.1 $ 8.4

Derivative Financial Instrume43

Derivative Financial Instruments and Hedging Activities (Tables)	12 Months Ended
	Sep. 30, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of fair values of all open derivative instruments	Fair Market Value of Financial Instruments — The fair values of all open derivative instruments were as follows (in millions): September 30, 2017 September 30, 2016 Other Current Assets Other Current Liabilities Other Current Assets Other Current Liabilities Cash flow hedges: Foreign exchange contracts $ — $ 0.4 $ — $ — Not designated as hedging instruments: Foreign exchange contracts 0.5 0.8 0.1 0.4 Interest rate contracts 0.3 0.7 — 0.4 $ 0.8 $ 1.9 $ 0.1 $ 0.8
Schedule of pre-tax effects of derivative instruments	The pre-tax effects of derivative instruments consisted of the following (in millions): Classification of Gains (Losses) Fiscal Year Ended September 30, 2017 2016 2015 Cash flow hedges: Foreign exchange contracts Net sales $ (0.1 ) $ — $ — Foreign exchange contracts Cost of sales (0.1 ) — 0.2 Foreign exchange contracts Miscellaneous, net (0.1 ) (0.2 ) 0.1 Not designated as hedging instruments: Foreign exchange contracts Miscellaneous, net 3.5 (7.6 ) 12.7 Interest rate contracts Miscellaneous, net 0.2 (0.2 ) — $ 3.4 $ (8.0 ) $ 13.0

Fair Value Measurement (Tables)

Fair Value Measurement (Tables)	12 Months Ended
	Sep. 30, 2017
Fair Value Disclosures [Abstract]
Schedule of fair values of financial assets and liabilities	The fair values of the Company’s financial assets and liabilities were as follows (in millions): Level 1 Level 2 Level 3 Total September 30, 2017: Assets: SERP plan assets (a) $ 21.7 $ — $ — $ 21.7 Foreign currency exchange derivatives (b) — 0.5 — 0.5 Interest rate contracts (c) — 0.3 — 0.3 Liabilities: Foreign currency exchange derivatives (b) $ — $ 1.2 $ — $ 1.2 Interest rate contracts (c) — 0.7 — 0.7 Level 1 Level 2 Level 3 Total September 30, 2016: Assets: SERP plan assets (a) $ 21.7 $ — $ — $ 21.7 Foreign currency exchange derivatives (b) — 0.1 — 0.1 Liabilities: Foreign currency exchange derivatives (b) $ — $ 0.4 $ — $ 0.4 Interest rate contracts (c) — 0.4 — 0.4 _________________________ (a) Represents investments in a rabbi trust for the Company's non-qualified SERP. The fair values of these investments are determined using a market approach. Investments include mutual funds for which quoted prices in active markets are available. The Company records changes in the fair value of investments in “Miscellaneous, net” in the Consolidated Statements of Income. (b) Based on observable market transactions of forward currency prices. (c) Based on observable market transactions of interest rate swap prices.

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	12 Months Ended
	Sep. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of equity-based compensation plans	Information related to the Company’s equity-based compensation plans in effect as of September 30, 2017 was as follows: Plan Category Number of Securities to be Issued Upon Exercise of Outstanding Options or Vesting of Share Awards Weighted-Average Exercise Price of Outstanding Options Number of Securities Remaining Available for Future Issuance Under Equity Compensation Plans Equity compensation plans approved by security holders 2,190,550 $ 45.14 6,740,105 Equity compensation plans not approved by security holders — — — 2,190,550 $ 45.14 6,740,105
Schedule of stock based compensation expense	Total stock-based compensation expense (income) was as follows (in millions): Fiscal Year Ended September 30, 2017 2016 2015 Stock options $ 7.5 $ 6.7 $ 6.0 Stock awards (shares and units) 11.6 9.7 11.5 Performance share awards 3.3 2.3 3.9 Cash-settled stock appreciation rights 3.3 3.4 (0.9 ) Cash-settled restricted stock unit awards 0.5 0.9 0.9 Total stock-based compensation cost 26.2 23.0 21.4 Income tax benefit recognized for stock-based compensation (9.6 ) (8.4 ) (7.9 ) $ 16.6 $ 14.6 $ 13.5
Schedule of stock option activity	Stock Options — A summary of the Company’s stock option activity is as follows: Fiscal Year Ended September 30, 2017 2016 2015 Options Weighted- Average Exercise Price Options Weighted- Average Exercise Price Options Weighted- Average Exercise Price Outstanding, beginning of year 2,104,929 $ 39.55 2,369,872 $ 36.57 2,690,507 $ 36.20 Granted 393,975 66.89 567,550 41.52 6,725 44.92 Forfeited (11,145 ) 52.54 (70,177 ) 44.31 (25,215 ) 42.20 Expired — — (43,392 ) 49.19 (24,866 ) 54.41 Exercised (956,068 ) 41.70 (718,924 ) 30.25 (277,279 ) 31.05 Outstanding, end of year 1,531,691 45.14 2,104,929 39.55 2,369,872 36.57 Exercisable, end of year 819,906 36.47 1,473,761 38.28 1,939,478 34.25
Schedule of outstanding stock options	Stock options outstanding and exercisable as of September 30, 2017 were as follows (in millions, except share and per share amounts): Outstanding Exercisable Exercise Prices Number Outstanding Weighted Average Remaining Contractual Life (in years) Weighted Average Exercise Price Aggregate Intrinsic Value Number Weighted Average Weighted Average Aggregate $ 7.95 - $ 19.24 123,234 1.0 $ 14.54 $ 8.4 123,234 1.0 $ 14.54 $ 8.4 $ 28.96 - $ 41.59 684,477 4.0 37.55 30.8 355,034 3.0 33.87 17.3 $ 46.94 - $ 66.89 723,980 5.0 57.51 18.1 341,638 3.5 47.07 12.1 1,531,691 4.2 45.14 $ 57.3 819,906 3.0 36.47 $ 37.8
Schedule of weighted-average assumptions used to value options	The Company uses the Black-Scholes valuation model to value stock options utilizing the following weighted-average assumptions: Fiscal Year Ended September 30, Options Granted During 2017 2016 2015 Assumptions: Expected term (in years) 5.1 5.1 5.1 Expected volatility 37.30 % 40.40 % 42.08 % Risk-free interest rate 1.79 % 1.73 % 1.55 % Expected dividend yield 1.52 % 1.65 % 1.25 %
Schedule of nonvested stock activity	Stock Awards — A summary of the Company’s stock award activity is as follows: Fiscal Year Ended September 30, 2017 2016 2015 Number of Shares Weighted- Average Grant Date Fair Value Number of Shares Weighted- Average Grant Date Fair Value Number of Shares Weighted- Average Grant Date Fair Value Beginning of year 313,806 $ 42.93 273,992 $ 46.84 609,869 $ 41.70 Granted 214,325 66.84 323,800 40.33 37,725 44.50 Forfeited (16,381 ) 51.67 (53,928 ) 45.71 (17,606 ) 41.36 Vested (159,591 ) 47.01 (230,058 ) 43.28 (355,996 ) 38.06 End of year 352,159 55.22 313,806 42.93 273,992 46.84
Schedule of Novested Performance-based Units Activity	Performance Share Awards — A summary of the Company’s performance share awards activity is as follows: Fiscal Year Ended September 30, 2017 2016 2015 Number of Shares Weighted- Average Grant Date Fair Value Number of Shares Weighted- Average Grant Date Fair Value Number of Shares Weighted- Average Grant Date Fair Value Beginning of year 103,550 $ 49.83 129,475 $ 54.94 257,475 $ 45.44 Granted 49,800 79.01 78,175 47.07 — — Forfeited — — (31,326 ) 52.90 — — Performance adjustments 36,750 54.84 (27,874 ) 54.71 (44,800 ) 35.84 Vested (73,500 ) 54.84 (44,900 ) 54.59 (83,200 ) 35.84 End of year 116,600 60.71 103,550 49.83 129,475 54.94
Schedule of weighted-average assumptions to estimate grant date fair values	The grant date fair values of the TSR performance share awards were estimated using a Monte Carlo simulation model utilizing the following weighted-average assumptions: Fiscal Year Ended September 30, Total Shareholder Return Performance Shares Granted During 2017 2016 Assumptions: Expected term (in years) 2.86 2.88 Expected volatility 34.09 % 33.28 % Risk-free interest rate 1.32 % 1.20 %

Restructuring and Other Charg46

Restructuring and Other Charges (Tables)	12 Months Ended
	Sep. 30, 2017
Restructuring and Related Activities [Abstract]
Restructuring and related costs	Pre-tax restructuring charges for fiscal year ended September 30, 2017 were as follows (in millions): Cost of Sales Selling, General and Administrative Expenses Total Access equipment $ 35.8 $ — $ 35.8 Pre-tax restructuring charges for fiscal year ended September 30, 2016 were as follows (in millions): Cost of Sales Operating Expenses Total Access equipment $ 0.9 $ 26.9 $ 27.8
Schedule of restructuring reserve by type of cost	Changes in the Company's restructuring reserves for fiscal 2017 and 2016 were as follows (in millions): Employee Severance and Termination Benefits Property, Plant and Equipment Impairment Other Costs Total Balance at September 30, 2015 $ — $ — $ — $ — Restructuring provision 0.9 26.9 — 27.8 Utilized - noncash — (26.9 ) — (26.9 ) Balance at September 30, 2016 0.9 — — 0.9 Restructuring provision 27.3 4.3 4.2 35.8 Utilized - cash (9.7 ) — (3.3 ) (13.0 ) Utilized - noncash — (4.3 ) — (4.3 ) Foreign currency translation 1.3 — 0.1 1.4 Balance at September 30, 2017 $ 19.8 $ — $ 1.0 $ 20.8

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	12 Months Ended
	Sep. 30, 2017
Defined Benefit Plan [Abstract]
Schedule of changes in the benefit obligations and plan assets, the funded status of the plans and the amounts recognized in the balance sheet	Changes in benefit obligations and plan assets, as well as the funded status of the Company’s defined benefit pension plans and postretirement benefit plans as of and for the fiscal years ended September 30, 2017 and 2016 , were as follows (in millions): Postretirement Pension Benefits Health and Other 2017 2016 2017 2016 Accumulated benefit obligation at September 30 $ 468.9 $ 474.9 $ 50.0 $ 47.2 Change in projected benefit obligation Benefit obligation at October 1 $ 482.3 $ 414.9 $ 47.2 $ 37.5 Service cost 10.7 8.8 2.5 2.0 Interest cost 17.8 18.3 1.6 1.5 Actuarial loss (gain) (12.1 ) 56.4 0.5 8.3 Participant contributions 0.2 0.2 — — Plan amendments — 1.1 — — Curtailments 0.5 — — — Benefits paid (26.6 ) (13.2 ) (1.8 ) (2.1 ) Currency translation adjustments 0.9 (4.2 ) — — Benefit obligation at September 30 $ 473.7 $ 482.3 $ 50.0 $ 47.2 Postretirement Pension Benefits Health and Other 2017 2016 2017 2016 Change in plan assets Fair value of plan assets at October 1 $ 334.0 $ 312.5 $ — $ — Actual return on plan assets 43.5 37.7 — — Company contributions 17.7 3.1 1.8 2.1 Participant contributions 0.2 0.2 — — Expenses paid (1.9 ) (2.2 ) — — Benefits paid (26.6 ) (13.2 ) (1.8 ) (2.1 ) Currency translation adjustments 0.9 (4.1 ) — — Fair value of plan assets at September 30 $ 367.8 $ 334.0 $ — $ — Funded status of plan - underfunded at September 30 $ (105.9 ) $ (148.3 ) $ (50.0 ) $ (47.2 ) Recognized in consolidated balance sheet at September 30 Accrued benefit liability (current liability) $ (1.9 ) $ (2.0 ) $ (1.1 ) $ (1.5 ) Accrued benefit liability (long-term liability) (104.0 ) (146.3 ) (48.9 ) (45.7 ) $ (105.9 ) $ (148.3 ) $ (50.0 ) $ (47.2 )
Schedule of Amounts Recognized in Other Comprehensive Income (Loss)	Recognized in accumulated other comprehensive income (loss) as of September 30 (net of taxes) Net actuarial (loss) gain $ (41.7 ) $ (69.0 ) $ (4.6 ) $ (4.5 ) Prior service (cost) benefit (7.9 ) (9.1 ) 8.0 8.7 $ (49.6 ) $ (78.1 ) $ 3.4 $ 4.2
Schedule of Weighted-average assumptions	Weighted-average assumptions as of September 30 Discount rate 3.85 % 3.70 % 3.71 % 3.47 % Expected return on plan assets 5.93 % 5.78 % n/a n/a
Schedule of Benefit Obligations in Excess of Plan Fair Value	Pension benefit plans with accumulated benefit obligations in excess of plan assets consisted of the following (in millions): September 30 2017 2016 Projected benefit obligation $ 473.7 $ 482.3 Accumulated benefit obligation 468.9 474.9 Fair value of plan assets 367.8 334.0
Schedule of net periodic benefit cost	The components of net periodic benefit cost (income) for fiscal years ended September 30 were as follows (in millions): Postretirement Pension Benefits Health and Other 2017 2016 2015 2017 2016 2015 Components of net periodic benefit cost (income) Service cost $ 10.7 $ 8.8 $ 8.2 $ 2.5 $ 2.0 $ 1.7 Interest cost 17.8 18.3 18.1 1.6 1.5 1.7 Expected return on plan assets (17.9 ) (17.4 ) (17.9 ) — — — Amortization of prior service cost (benefit) 1.8 1.8 1.7 (0.9 ) (0.9 ) (0.9 ) Curtailment/settlement 0.5 — — — — (3.4 ) Amortization of net actuarial loss (gain) 4.5 2.3 2.6 0.2 (0.1 ) 0.1 Expenses paid 1.9 2.2 2.8 — — — Net periodic benefit cost (income) $ 19.3 $ 16.0 $ 15.5 $ 3.4 $ 2.5 $ (0.8 ) Other changes in plan assets and benefit obligations recognized in other comprehensive income Net actuarial loss (gain) $ (37.8 ) $ 36.6 $ 10.0 $ 0.5 $ 8.3 $ (7.7 ) Prior service cost — 1.1 1.1 — — — Amortization of prior service benefit (cost) (1.8 ) (1.8 ) (1.7 ) 0.9 0.9 0.9 Curtailment/settlement — — — — — 3.4 Amortization of net actuarial (loss) gain (4.5 ) (2.3 ) (2.6 ) (0.2 ) 0.1 (0.1 ) $ (44.1 ) $ 33.6 $ 6.8 $ 1.2 $ 9.3 $ (3.5 ) Weighted-average assumptions Discount rate 3.70 % 4.45 % 4.52 % 3.47 % 4.08 % 4.04 % Expected return on plan assets 5.78 % 6.03 % 6.25 % n/a n/a n/a
Schedule of pension plan asset and target allocation	The weighted-average of the Company’s pension plan asset allocations and target allocations at September 30, 2017 by asset category, were as follows: Target % Actual Asset Category Fixed income 30% - 40% 37 % Large-cap equity 25% - 35% 34 % Mid-cap equity 5% - 15% 7 % Small-cap equity 5% - 15% 9 % Global equity 5% - 15% 10 % Other 0% - 5% 3 % 100 %
Schedule of fair value of plan assets by major category and level within fair value hierarchy	The fair value of plan assets by major category and level within the fair value hierarchy was as follows (in millions): Quoted Prices for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total September 30, 2017: Common stocks U.S. companies (a) $ 70.8 $ 5.7 $ — $ 76.5 International companies (b) — 11.4 — 11.4 Mutual funds (a) 71.3 — — 71.3 Government and agency bonds (c) — 5.4 — 5.4 Corporate bonds and notes (d) — 4.5 — 4.5 Money market funds (e) 9.1 — — 9.1 $ 151.2 $ 27.0 $ — 178.2 Investments measured at net asset value (NAV) (f) 189.6 $ 367.8 Quoted Prices for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total September 30, 2016: Common stocks U.S. companies (a) $ 66.8 $ 5.4 $ — $ 72.2 International companies (b) — 11.5 — 11.5 Mutual funds (a) 61.9 — — 61.9 Government and agency bonds (c) — 5.3 — 5.3 Corporate bonds and notes (d) — 6.0 — 6.0 Money market funds (e) 5.8 — — 5.8 $ 134.5 $ 28.2 $ — 162.7 Investments measured at net asset value (NAV) (f) 171.3 $ 334.0 _________________________ (a) Primarily valued using a market approach based on the quoted market prices of identical instruments that are actively traded on public exchanges. (b) Valuation model looks at underlying security “best” price, exchange rate for underlying security's currency against the U.S. Dollar and ratio of underlying security to American depository receipt. (c) These investments consist of debt securities issued by the U.S. Treasury, U.S. government agencies and U.S. government-sponsored enterprises and have a variety of structures, coupon rates and maturities. These investments are considered to have low default risk as they are guaranteed by the U.S. government. Fixed income securities are primarily valued using a market approach with inputs that include broker quotes, benchmark yields, base spreads and reported trades. (d) These investments consist of debt obligations issued by a variety of private and public corporations. These are investment grade securities which historically have provided a steady stream of income. Fixed income securities are primarily valued using a market approach with inputs that include broker quotes, benchmark yields, base spreads and reported trades. (e) These investments largely consist of short-term investment funds and are valued using a market approach based on the quoted market prices of identical instruments. (f) These investments consists of privately placed funds that are valued based on NAV. NAV of the funds is based on the fair value of each funds underlying investments. In accordance with ASC Subtopic 820-10, certain investments that are measured at fair value using the NAV per share (or its equivalent) practical expedient have not been classified in the fair value hierarchy.
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share	The following table sets forth additional disclosures for the fair value measurement of the fair value of pension plans assets that calculate fair value based on NAV per share practical expedient as of September 30, 2017 (in millions): Fair Value Unfunded Commitments Redemption Frequency (if Currently Eligible) Redemption Notice Period (1) Common collective trust $ 189.6 $ — N/A 15 days _________________________ (1) Represents the maximum redemption period. A portion of the investment does not have any redemption period restrictions. The following table sets forth additional disclosures for the fair value measurement of the fair value of pension plans assets that calculate fair value based on NAV per share practical expedient as of September 30, 2016 (in millions): Fair Value Unfunded Commitments Redemption Frequency (if Currently Eligible) Redemption Notice Period (1) Common collective trust $ 171.3 $ — N/A 15 days
Schedule of estimated future benefit payments	The Company’s estimated future benefit payments under Company sponsored plans were as follows (in millions): Postretirement Health and Other Fiscal Year Ending Pension Benefits September 30, Qualified Non-Qualified 2018 $ 12.3 $ 1.9 $ 1.1 2019 13.5 1.9 1.6 2020 14.9 1.9 2.2 2021 16.2 1.8 2.7 2022 17.5 1.8 3.1 2023-2027 107.0 9.7 20.8

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Sep. 30, 2017
Income Tax Disclosure [Abstract]
Schedule of pre-tax income (loss) from continuing operations	Pre-tax income was taxed in the following jurisdictions (in millions): Fiscal Year Ended September 30, 2017 2016 2015 Domestic $ 392.7 $ 277.1 $ 316.4 Foreign 18.6 29.9 9.7 $ 411.3 $ 307.0 $ 326.1
Schedule of components of provision for (benefit from) income taxes	Significant components of the provision for income taxes were as follows (in millions): Fiscal Year Ended September 30, 2017 2016 2015 Allocated to Income Before Equity in Earnings of Unconsolidated Affiliates Current: Federal $ 104.9 $ 103.6 $ 108.8 Foreign 13.5 3.2 1.5 State 1.0 2.6 1.1 Total current 119.4 109.4 111.4 Deferred: Federal 6.6 (18.5 ) (10.8 ) Foreign 4.2 2.0 (1.3 ) State (3.0 ) (0.5 ) (0.1 ) Total deferred 7.8 (17.0 ) (12.2 ) $ 127.2 $ 92.4 $ 99.2 Allocated to Other Comprehensive Income (Loss) Deferred federal, state and foreign $ 15.1 $ (14.2 ) $ (1.2 )
Schedule of reconciliation of income tax computed at U.S. federal statutory tax rates to income tax expense	The reconciliation of income tax computed at the U.S. federal statutory tax rates to income tax expense was: Fiscal Year Ended September 30, 2017 2016 2015 Effective Rate Reconciliation U.S. federal tax rate 35.0 % 35.0 % 35.0 % State income taxes, net 1.3 1.3 2.5 Foreign taxes 0.6 (1.7 ) (2.4 ) Tax audit settlements — 0.1 (2.6 ) Valuation allowance 0.5 (0.6 ) 0.4 Domestic tax credits (4.2 ) (1.5 ) (1.3 ) Manufacturing deduction (2.8 ) (3.0 ) (2.8 ) Share-based compensation (1.3 ) — — Other, net 1.8 0.5 1.6 30.9 % 30.1 % 30.4 %
Components of deferred income tax assets and liabilities	Deferred income tax assets and liabilities were comprised of the following (in millions): September 30, 2017 2016 Deferred tax assets: Other long-term liabilities $ 81.0 $ 109.9 Losses and credits 31.2 36.4 Accrued warranty 31.8 27.0 Other current liabilities 24.5 31.1 Payroll-related obligations 34.9 28.2 Receivables 7.0 6.3 Other 12.4 (0.8 ) Gross deferred tax assets 222.8 238.1 Less valuation allowance (10.4 ) (8.6 ) Deferred tax assets, net 212.4 229.5 Deferred tax liabilities: Intangible assets 154.8 167.0 Property, plant and equipment 52.4 47.4 Inventories 17.6 15.5 Other 3.6 2.5 Deferred tax liabilities 228.4 232.4 Deferred tax liabilities, net of deferred tax assets $ (16.0 ) $ (2.9 )
Schedule of classification of deferred tax liability in consolidated balance sheets	The net deferred tax liability is classified in the Consolidated Balance Sheets as follows (in millions): September 30, 2017 2016 Long-term net deferred tax asset $ 4.2 $ 8.4 Long-term net deferred tax liability (20.2 ) (11.3 ) Net deferred tax liabilities $ (16.0 ) $ (2.9 )
Schedule of reconciliation of unrecognized tax benefits	A reconciliation of gross unrecognized tax benefits, excluding interest and penalties, was as follows (in millions): Fiscal Year Ended September 30, 2017 2016 2015 Balance at beginning of year $ 37.4 $ 27.0 $ 33.5 Additions for tax positions related to current year 1.2 7.6 4.6 Additions for tax positions related to prior years 6.0 8.4 2.1 Reductions for tax positions related to prior years (5.5 ) (1.1 ) — Settlements — (3.0 ) (8.6 ) Lapse of statutes of limitations (1.9 ) (1.5 ) (4.5 ) Foreign currency translation — — (0.1 ) Balance at end of year $ 37.2 $ 37.4 $ 27.0
Schedule of tax years open for examination under applicable statutes	As of September 30, 2017 , tax years open for examination under applicable statutes were as follows: Tax Jurisdiction Open Tax Years Australia 2013 - 2017 Belgium 2014 - 2017 Brazil 2011 - 2017 Canada 2013 - 2017 China 2012 - 2017 Romania 2011 - 2017 The Netherlands 2012 - 2017 United States (federal) 2014 - 2017 United States (state and local) 2006 - 2017

Accumulated Other Comprehensi49

Accumulated Other Comprehensive Income (Loss) Accumulated Other Comprehensive Income (Loss) (Tables)	12 Months Ended
	Sep. 30, 2017
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss)	Changes in accumulated other comprehensive income (loss) by component were as follows (in millions): Employee Pension and Postretirement Benefits, Net of Tax Cumulative Translation Adjustments Derivative Instruments Accumulated Other Comprehensive Income (Loss) Balance at September 30, 2014 $ (44.2 ) $ (25.0 ) $ — $ (69.2 ) Other comprehensive income (loss) before reclassifications (3.7 ) (73.1 ) 0.3 (76.5 ) Amounts reclassified from accumulated other comprehensive income (loss) 1.5 — (0.2 ) 1.3 Net current period other comprehensive income (loss) (2.2 ) (73.1 ) 0.1 (75.2 ) Balance at September 30, 2015 (46.4 ) (98.1 ) 0.1 (144.4 ) Other comprehensive income (loss) before reclassifications (29.5 ) (3.0 ) (0.2 ) (32.7 ) Amounts reclassified from accumulated other comprehensive income (loss) 2.0 — 0.1 2.1 Net current period other comprehensive income (loss) (27.5 ) (3.0 ) (0.1 ) (30.6 ) Balance at September 30, 2016 (73.9 ) (101.1 ) — (175.0 ) Other comprehensive income (loss) before reclassifications 23.7 22.5 (0.2 ) 46.0 Amounts reclassified from accumulated other comprehensive income (loss) 4.0 — — 4.0 Net current period other comprehensive income (loss) 27.7 22.5 (0.2 ) 50.0 Balance at September 30, 2017 $ (46.2 ) $ (78.6 ) $ (0.2 ) $ (125.0 )
Reclassification out of Accumulated Other Comprehensive Income	Reclassifications out of accumulated other comprehensive income (loss) included in the computation of net periodic pension and postretirement benefit cost (refer to Note 17 of the Notes to Consolidated Financial Statements for additional details regarding employee benefit plans) were as follows (in millions): Fiscal Year Ended September 30, 2017 2016 2015 Amortization of employee pension and postretirement benefits items Prior service costs $ (0.9 ) $ (0.9 ) $ (0.8 ) Actuarial losses (4.7 ) (2.2 ) (2.7 ) Curtailment/settlement (0.5 ) — 1.2 Total before tax (6.1 ) (3.1 ) (2.3 ) Tax benefit 2.1 1.1 0.8 Net of tax $ (4.0 ) $ (2.0 ) $ (1.5 )

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Sep. 30, 2017
Earnings Per Share [Abstract]
Schedule of income	The calculation of basic and diluted earnings per common share was as follows (in millions, except share amounts): Fiscal Year Ended September 30, 2017 2016 2015 Net income $ 285.6 $ 216.4 $ 229.5 Earnings allocated to participating securities — — (0.5 ) Earnings available to common shareholders $ 285.6 $ 216.4 $ 229.0 Basic weighted-average common shares outstanding 74,674,115 73,570,020 77,990,432 Dilutive stock options and other equity-based compensation awards 1,115,930 862,898 1,101,303 Participating restricted stock — — (110,317 ) Diluted weighted-average common shares outstanding 75,790,045 74,432,918 78,981,418
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share	Options not included in the computation of diluted earnings per share attributable to common shareholders because they would have been anti-dilutive were as follows: Fiscal Year Ended September 30, 2017 2016 2015 Stock options 381,350 224,200 1,153,252

Contingencies, Significant Es51

Contingencies, Significant Estimates and Concentrations (Tables)	12 Months Ended
	Sep. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Schedule of significant portion of revenues from the Department of Defense	The Company derived a significant portion of its revenue from the DoD, as follows (in millions): Fiscal Year Ended September 30, 2017 2016 2015 DoD $ 1,314.6 $ 1,205.0 $ 922.1 Foreign military sales 32.1 1.8 0.3 Total DoD sales $ 1,346.7 $ 1,206.8 $ 922.4

Business Segment Information (T

Business Segment Information (Tables)	12 Months Ended
	Sep. 30, 2017
Segment Reporting [Abstract]
Schedule of net sales by product lines and reportable segments	Selected financial information concerning the Company’s reportable segments and product lines is as follows (in millions): Fiscal Year Ended September 30, 2017 2016 2015 External Customers Inter- segment Net Sales External Customers Inter- segment Net Sales External Customers Inter- segment Net Sales Access equipment Aerial work platforms $ 1,629.6 $ — $ 1,629.6 $ 1,539.5 $ — $ 1,539.5 $ 1,627.0 $ — $ 1,627.0 Telehandlers 661.8 — 661.8 773.9 — 773.9 1,126.1 — 1,126.1 Other 735.0 — 735.0 699.0 — 699.0 647.5 — 647.5 Total access equipment 3,026.4 — 3,026.4 3,012.4 — 3,012.4 3,400.6 — 3,400.6 Defense 1,818.6 1.5 1,820.1 1,349.3 1.8 1,351.1 931.8 8.0 939.8 Fire & emergency 1,015.4 15.5 1,030.9 941.5 11.8 953.3 791.5 23.6 815.1 Commercial Concrete placement 474.0 — 474.0 463.6 — 463.6 461.0 — 461.0 Refuse collection 391.1 — 391.1 409.1 — 409.1 385.0 — 385.0 Other 99.3 5.9 105.2 103.3 3.2 106.5 128.2 3.8 132.0 Total commercial 964.4 5.9 970.3 976.0 3.2 979.2 974.2 3.8 978.0 Corporate and intersegment eliminations 4.8 (22.9 ) (18.1 ) — (16.8 ) (16.8 ) — (35.4 ) (35.4 ) Consolidated $ 6,829.6 $ — $ 6,829.6 $ 6,279.2 $ — $ 6,279.2 $ 6,098.1 $ — $ 6,098.1
Schedule of income (loss) from continuing operations by product lines and reportable segments	Fiscal Year Ended September 30, 2017 2016 2015 Operating income (loss): Access equipment (a) $ 259.1 $ 263.4 $ 407.0 Defense 207.9 122.5 9.2 Fire & emergency 104.2 67.0 43.8 Commercial 43.8 67.6 64.5 Corporate (152.0 ) (156.5 ) (126.0 ) Intersegment eliminations — — 0.1 Consolidated 463.0 364.0 398.6 Interest expense net of interest income (b) (54.9 ) (58.3 ) (67.6 ) Miscellaneous other income (expense) 3.2 1.3 (4.9 ) Income before income taxes and equity in earnings of unconsolidated affiliates $ 411.3 $ 307.0 $ 326.1 _________________________ (a) Fiscal 2017 results include $35.8 million of restructuring costs and $9.4 million of operating expenses related to restructuring plans. Fiscal 2016 results include a $26.9 million asset impairment charge and a $0.9 million workforce reduction charge. (b) Fiscal 2015 results include $14.7 million in debt extinguishment costs.
Schedule of Depreciation Amortization Capital Expenditure by Segment	Fiscal Year Ended September 30, 2017 2016 2015 Depreciation and amortization: Access equipment $ 72.1 $ 77.0 $ 74.1 Defense 14.5 11.1 12.2 Fire & emergency 9.4 9.7 10.3 Commercial 12.7 12.0 11.2 Corporate (a) 21.6 19.0 16.7 Consolidated $ 130.3 $ 128.8 $ 124.5 Capital expenditures: Access equipment (b) $ 51.4 $ 52.5 $ 56.6 Defense 31.9 22.2 2.2 Fire & emergency 7.2 7.2 4.7 Commercial (b) 10.9 10.0 11.5 Corporate (c) 11.8 35.4 83.0 Consolidated $ 113.2 $ 127.3 $ 158.0 _________________________ (a) Includes $3.3 million in fiscal 2015 related to the write-off of deferred financing fees due to the early extinguishment of the related debt. (b) Capital expenditures include both the purchase of property, plant and equipment and equipment held for rental. (c) Fiscal 2016 and 2015 include capital expenditures for an enterprise-wide information system and the corporate-led shared manufacturing facility in Mexico that supports multiple operating segments.
Schedule of identifiable assets by business segments and by geographical segments	September 30, 2017 2016 Identifiable assets: Access equipment: U.S. $ 1,905.5 $ 1,856.0 Europe 541.0 521.5 Rest of the world 246.1 193.7 Total access equipment 2,692.6 2,571.2 Defense: U.S. 775.1 522.2 Rest of the world 7.0 3.0 Total defense 782.1 525.2 Fire & emergency - U.S. 552.6 522.7 Commercial: U.S. 377.3 358.4 Rest of the world 42.3 33.4 Total commercial 419.6 391.8 Corporate: U.S. (a) 543.9 408.3 Rest of the world (b) 108.1 94.6 Total corporate 652.0 502.9 Consolidated $ 5,098.9 $ 4,513.8 _________________________ (a) Primarily includes cash and short-term investments. (b) Primarily includes the corporate-led shared manufacturing facility in Mexico that supports multiple operating segments.
Schedule of net sales by geographical segments	The following table presents net sales by geographic region based on product shipment destination (in millions): Fiscal Year Ended September 30, 2017 2016 2015 Net sales: United States $ 5,094.8 $ 4,756.6 $ 4,789.3 Other North America 191.6 219.5 302.8 Europe, Africa and the Middle East 1,146.9 905.5 564.4 Rest of the world 396.3 397.6 441.6 Consolidated $ 6,829.6 $ 6,279.2 $ 6,098.1

Separate Financial Informatio53

Separate Financial Information of Subsidiary Guarantors of Indebtedness (Tables)	12 Months Ended
	Sep. 30, 2017
Separate Financial Information of Subsidiary Guarantors of Indebtedness Disclosure Abstract
Condensed Consolidating Statements of Income and Comprehensive Income	Condensed Consolidating Statement of Income and Comprehensive Income For the Year Ended September 30, 2017 Oshkosh Corporation Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total Net sales $ — $ 5,837.5 $ 1,181.7 $ (189.6 ) $ 6,829.6 Cost of sales 1.9 4,838.0 1,004.4 (189.1 ) 5,655.2 Gross income (loss) (1.9 ) 999.5 177.3 (0.5 ) 1,174.4 Selling, general and administrative expenses 136.5 424.2 104.9 — 665.6 Amortization of purchased intangibles — 38.4 7.4 — 45.8 Operating income (loss) (138.4 ) 536.9 65.0 (0.5 ) 463.0 Interest expense (56.9 ) (54.4 ) (2.2 ) 53.7 (59.8 ) Interest income 3.4 18.1 37.1 (53.7 ) 4.9 Miscellaneous, net 91.7 (179.6 ) 91.1 — 3.2 Income (loss) before income taxes (100.2 ) 321.0 191.0 (0.5 ) 411.3 Provision for (benefit from) income taxes (29.3 ) 93.7 63.0 (0.2 ) 127.2 Income (loss) before equity in earnings of affiliates (70.9 ) 227.3 128.0 (0.3 ) 284.1 Equity in earnings of consolidated subsidiaries 356.5 81.7 42.5 (480.7 ) — Equity in earnings of unconsolidated affiliates — — 1.5 — 1.5 Net income 285.6 309.0 172.0 (481.0 ) 285.6 Other comprehensive income (loss), net of tax 50.0 18.1 22.5 (40.6 ) 50.0 Comprehensive income $ 335.6 $ 327.1 $ 194.5 $ (521.6 ) $ 335.6 Condensed Consolidating Statement of Income and Comprehensive Income For the Year Ended September 30, 2016 Oshkosh Corporation Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total Net sales $ — $ 5,289.7 $ 1,119.4 $ (129.9 ) $ 6,279.2 Cost of sales 2.6 4,410.7 940.1 (130.0 ) 5,223.4 Gross income (loss) (2.6 ) 879.0 179.3 0.1 1,055.8 Selling, general and administrative expenses 121.8 390.7 99.9 — 612.4 Amortization of purchased intangibles — 38.6 13.9 — 52.5 Asset impairment charge — 26.9 — — 26.9 Operating income (loss) (124.4 ) 422.8 65.5 0.1 364.0 Interest expense (277.6 ) (63.3 ) (2.1 ) 282.6 (60.4 ) Interest income 1.7 89.5 193.5 (282.6 ) 2.1 Miscellaneous, net 60.8 (208.3 ) 148.8 — 1.3 Income (loss) before income taxes (339.5 ) 240.7 405.7 0.1 307.0 Provision for (benefit from) income taxes (108.8 ) 75.4 125.8 — 92.4 Income (loss) before equity in earnings of affiliates (230.7 ) 165.3 279.9 0.1 214.6 Equity in earnings of consolidated subsidiaries 447.4 101.5 77.9 (626.8 ) — Equity in earnings of unconsolidated affiliates (0.3 ) — 2.1 — 1.8 Net income 216.4 266.8 359.9 (626.7 ) 216.4 Other comprehensive income (loss), net of tax (30.6 ) (18.3 ) (6.2 ) 24.5 (30.6 ) Comprehensive income $ 185.8 $ 248.5 $ 353.7 $ (602.2 ) $ 185.8 Condensed Consolidating Statement of Income and Comprehensive Income For the Year Ended September 30, 2015 Oshkosh Corporation Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total Net sales $ — $ 5,127.7 $ 1,050.6 $ (80.2 ) $ 6,098.1 Cost of sales 0.4 4,321.7 816.7 (79.9 ) 5,058.9 Gross income (loss) (0.4 ) 806.0 233.9 (0.3 ) 1,039.2 Selling, general and administrative expenses 101.8 390.9 94.7 — 587.4 Amortization of purchased intangibles — 39.2 14.0 — 53.2 Operating income (loss) (102.2 ) 375.9 125.2 (0.3 ) 398.6 Interest expense (256.2 ) (53.8 ) (1.3 ) 241.2 (70.1 ) Interest income 1.6 67.4 174.7 (241.2 ) 2.5 Miscellaneous, net 25.7 (129.9 ) 99.3 — (4.9 ) Income (loss) before income taxes (331.1 ) 259.6 397.9 (0.3 ) 326.1 Provision for (benefit from) income taxes (106.4 ) 83.4 122.3 (0.1 ) 99.2 Income (loss) before equity in earnings of affiliates (224.7 ) 176.2 275.6 (0.2 ) 226.9 Equity in earnings of consolidated subsidiaries 454.4 129.2 149.7 (733.3 ) — Equity in earnings of unconsolidated affiliates (0.2 ) — 2.8 — 2.6 Net income 229.5 305.4 428.1 (733.5 ) 229.5 Other comprehensive income (loss), net of tax (75.2 ) (4.3 ) (67.7 ) 72.0 (75.2 ) Comprehensive income $ 154.3 $ 301.1 $ 360.4 $ (661.5 ) $ 154.3
Condensed Consolidating Balance Sheet	Condensed Consolidating Balance Sheet As of September 30, 2017 Oshkosh Corporation Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total Assets Current assets: Cash and cash equivalents $ 399.5 $ 4.6 $ 42.9 $ — $ 447.0 Receivables, net 28.3 1,025.5 316.1 (63.6 ) 1,306.3 Inventories, net — 819.3 379.1 — 1,198.4 Other current assets 45.4 31.9 10.8 — 88.1 Total current assets 473.2 1,881.3 748.9 (63.6 ) 3,039.8 Investment in and advances to consolidated subsidiaries 3,138.3 1,340.4 (59.6 ) (4,419.1 ) — Intercompany receivables 48.0 261.6 1,971.8 (2,281.4 ) — Intangible assets, net — 909.5 611.3 — 1,520.8 Other long-term assets 69.1 242.9 226.3 — 538.3 Total assets $ 3,728.6 $ 4,635.7 $ 3,498.7 $ (6,764.1 ) $ 5,098.9 Liabilities and Shareholders' Equity Current liabilities: Accounts payable $ 11.6 $ 517.2 $ 176.4 $ (54.2 ) $ 651.0 Customer advances — 510.7 2.7 — 513.4 Other current liabilities 105.2 304.9 118.0 (9.4 ) 518.7 Total current liabilities 116.8 1,332.8 297.1 (63.6 ) 1,683.1 Long-term debt, less current maturities 807.9 — — — 807.9 Intercompany payables 452.9 1,780.5 48.0 (2,281.4 ) — Other long-term liabilities 43.6 134.1 122.8 — 300.5 Total shareholders’ equity 2,307.4 1,388.3 3,030.8 (4,419.1 ) 2,307.4 Total liabilities and shareholders' equity $ 3,728.6 $ 4,635.7 $ 3,498.7 $ (6,764.1 ) $ 5,098.9 Condensed Consolidating Balance Sheet As of September 30, 2016 Oshkosh Corporation Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total Assets Current assets: Cash and cash equivalents $ 285.4 $ 1.7 $ 34.8 $ — $ 321.9 Receivables, net 13.0 734.3 319.6 (45.0 ) 1,021.9 Inventories, net — 679.1 300.7 — 979.8 Other current assets 28.0 58.5 7.4 — 93.9 Total current assets 326.4 1,473.6 662.5 (45.0 ) 2,417.5 Investment in and advances to consolidated subsidiaries 6,148.2 1,253.6 (120.0 ) (7,281.8 ) — Intercompany receivables 48.0 1,353.7 4,632.2 (6,033.9 ) — Intangible assets, net — 947.5 609.5 — 1,557.0 Other long-term assets 87.3 232.7 219.3 — 539.3 Total assets $ 6,609.9 $ 5,261.1 $ 6,003.5 $ (13,360.7 ) $ 4,513.8 Liabilities and Shareholders' Equity Current liabilities: Accounts payable $ 13.3 $ 375.0 $ 122.6 $ (44.8 ) $ 466.1 Customer advances — 465.8 6.0 — 471.8 Other current liabilities 85.5 246.5 97.9 (0.2 ) 429.7 Total current liabilities 98.8 1,087.3 226.5 (45.0 ) 1,367.6 Long-term debt, less current maturities 826.2 — — — 826.2 Intercompany payables 3,639.4 2,346.5 48.0 (6,033.9 ) — Other long-term liabilities 69.0 147.9 126.6 — 343.5 Total shareholders’ equity 1,976.5 1,679.4 5,602.4 (7,281.8 ) 1,976.5 Total liabilities and shareholders' equity $ 6,609.9 $ 5,261.1 $ 6,003.5 $ (13,360.7 ) $ 4,513.8
Condensed Consolidating Statement of Cash Flows	Condensed Consolidating Statement of Cash Flows For the Year Ended September 30, 2017 Oshkosh Corporation Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total Net cash provided (used) by operating activities $ (49.5 ) $ 153.9 $ 142.1 $ — $ 246.5 Investing activities: Additions to property, plant and equipment (7.4 ) (53.2 ) (25.2 ) — (85.8 ) Additions to equipment held for rental — — (27.4 ) — (27.4 ) Proceeds from sale of equipment held for rental — — 49.5 — 49.5 Intercompany investing — 467.5 (122.2 ) (345.3 ) — Other investing activities (2.0 ) 0.5 — — (1.5 ) Net cash provided (used) by investing activities (9.4 ) 414.8 (125.3 ) (345.3 ) (65.2 ) Financing activities: Proceeds from issuance of debt (original maturities greater than three months) — — 5.9 — 5.9 Repayments of debt (original maturities greater than three months) (20.0 ) — (3.0 ) — (23.0 ) Repurchases of Common Stock (4.8 ) — — — (4.8 ) Dividends paid (62.8 ) — — — (62.8 ) Proceeds from exercise of stock options 39.9 — — — 39.9 Intercompany financing 220.7 (566.0 ) — 345.3 — Net cash provided (used) by financing activities 173.0 (566.0 ) 2.9 345.3 (44.8 ) Effect of exchange rate changes on cash — 0.2 (11.6 ) — (11.4 ) Increase in cash and cash equivalents 114.1 2.9 8.1 — 125.1 Cash and cash equivalents at beginning of year 285.4 1.7 34.8 — 321.9 Cash and cash equivalents at end of year $ 399.5 $ 4.6 $ 42.9 $ — $ 447.0 Condensed Consolidating Statement of Cash Flows For the Year Ended September 30, 2016 Oshkosh Corporation Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total Net cash provided (used) by operating activities $ (211.3 ) $ 466.7 $ 328.5 $ — $ 583.9 Investing activities: Additions to property, plant and equipment (22.4 ) (40.4 ) (29.7 ) — (92.5 ) Additions to equipment held for rental — — (34.8 ) — (34.8 ) Proceeds from sale of equipment held for rental — 0.6 39.6 — 40.2 Intercompany investing (0.7 ) (405.8 ) (297.2 ) 703.7 — Other investing activities (2.0 ) (0.1 ) — — (2.1 ) Net cash used by investing activities (25.1 ) (445.7 ) (322.1 ) 703.7 (89.2 ) Financing activities: Proceeds from issuance of debt (original maturities greater than three months) 320.0 — 3.5 — 323.5 Repayments of debt (original maturities greater than three months) (370.0 ) — (3.5 ) — (373.5 ) Net decrease in short-term debt (33.5 ) — — — (33.5 ) Repurchases of Common Stock (106.3 ) — — — (106.3 ) Dividends paid (55.9 ) — — — (55.9 ) Proceeds from exercise of stock options 21.7 — — — 21.7 Excess tax benefit from stock-based compensation 2.0 — — — 2.0 Intercompany financing 729.0 (26.0 ) 0.7 (703.7 ) — Net cash provided (used) by financing activities 507.0 (26.0 ) 0.7 (703.7 ) (222.0 ) Effect of exchange rate changes on cash — 0.4 5.9 — 6.3 Increase (decrease) in cash and cash equivalents 270.6 (4.6 ) 13.0 — 279.0 Cash and cash equivalents at beginning of year 14.8 6.3 21.8 — 42.9 Cash and cash equivalents at end of year $ 285.4 $ 1.7 $ 34.8 $ — $ 321.9 Condensed Consolidating Statement of Cash Flows For the Year Ended September 30, 2015 Oshkosh Corporation Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total Net cash provided (used) by operating activities $ (169.9 ) $ 58.5 $ 202.8 $ — $ 91.4 Investing activities: Additions to property, plant and equipment (29.3 ) (27.9 ) (74.5 ) — (131.7 ) Additions to equipment held for rental — — (26.3 ) — (26.3 ) Acquisition of a business, net of cash acquired — — (10.0 ) — (10.0 ) Proceeds from sale of equipment held for rental — — 26.8 — 26.8 Intercompany investing (30.7 ) (2.8 ) (154.2 ) 187.7 — Other investing activities 0.7 0.9 (0.5 ) — 1.1 Net cash used by investing activities (59.3 ) (29.8 ) (238.7 ) 187.7 (140.1 ) Financing activities: Proceeds from issuance of debt (original maturities greater than three months) 375.0 — — — 375.0 Repayments of debt (original maturities greater than three months) (365.0 ) — — — (365.0 ) Net increase in short-term debt 33.5 — — — 33.5 Debt issuance costs (15.5 ) — — — (15.5 ) Repurchases of Common Stock (209.3 ) — — — (209.3 ) Dividends paid (53.1 ) — — — (53.1 ) Proceeds from exercise of stock options 8.6 — — — 8.6 Excess tax benefit from stock-based compensation 4.0 — — — 4.0 Intercompany financing 184.0 (26.0 ) 29.7 (187.7 ) — Net cash provided (used) by financing activities (37.8 ) (26.0 ) 29.7 (187.7 ) (221.8 ) Effect of exchange rate changes on cash — (1.1 ) 0.7 — (0.4 ) Increase (decrease) in cash and cash equivalents (267.0 ) 1.6 (5.5 ) — (270.9 ) Cash and cash equivalents at beginning of year 281.8 4.7 27.3 — 313.8 Cash and cash equivalents at end of year $ 14.8 $ 6.3 $ 21.8 $ — $ 42.9

Unaudited Quarterly Results (Ta

Unaudited Quarterly Results (Tables)	12 Months Ended
	Sep. 30, 2017
Quarterly Financial Information Disclosure [Abstract]
Schedule of unaudited quarterly results	Unaudited Quarterly Results (in millions, except per share amounts) Fiscal Year Ended September 30, 2017 4th Quarter (a) 3rd Quarter (b) 2nd Quarter (c) 1st Quarter (d) Net sales $ 1,963.0 $ 2,036.9 $ 1,618.3 $ 1,211.4 Gross income 326.5 386.9 261.3 199.7 Operating income 134.5 211.9 80.4 36.2 Net income 93.5 128.6 44.3 19.2 Earnings per share: Basic $ 1.25 $ 1.72 $ 0.59 $ 0.26 Diluted $ 1.23 $ 1.69 $ 0.58 $ 0.26 Common Stock per share dividends $ 0.21 $ 0.21 $ 0.21 $ 0.21 _________________________ (a) The fourth quarter of fiscal 2017 was impacted by restructuring-related charges of $15.8 million ( $11.5 million after-tax) in the access equipment segment. (b) The third quarter of fiscal 2017 was impacted by restructuring-related charges of $11.1 million ( $11.5 million after-tax) in the access equipment segment. (c) The second quarter of fiscal 2017 was impacted by restructuring-related charges of $17.6 million ( $14.0 million after-tax) in the access equipment segment. (d) The first quarter of fiscal 2017 was impacted by restructuring-related charges of $0.7 million ( $0.4 million after-tax) in the access equipment segment. Fiscal Year Ended September 30, 2016 4th Quarter (a) 3rd Quarter 2nd Quarter 1st Quarter Net sales $ 1,755.4 $ 1,747.5 $ 1,524.3 $ 1,252.0 Gross income 299.1 314.6 259.3 182.8 Operating income 95.5 146.8 91.4 30.3 Net income 61.5 84.2 56.1 14.6 Earnings per share: Basic $ 0.83 $ 1.15 $ 0.77 $ 0.20 Diluted $ 0.82 $ 1.13 $ 0.76 $ 0.19 Common Stock per share dividends $ 0.19 $ 0.19 $ 0.19 $ 0.19 _________________________ (a) The fourth quarter of fiscal 2016 was impacted by a combined $27.8 million ( $17.5 million after-tax) asset impairment and workforce reduction charge in the access equipment segment.

Nature of Operations (Details)

Nature of Operations (Details) - 12 months ended Sep. 30, 2017	Total	segment
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of reportable segments of entity (in segments)	4	4

Summary of Significant Accoun56

Summary of Significant Accounting Policies (Details)	12 Months Ended
	Sep. 30, 2017USD ($)Step	Sep. 30, 2016USD ($)	Sep. 30, 2015USD ($)
Revenue Recognition [Abstract]
Percent of Companies Current Year Revenues Recognized Using Percentage of Completion Method Accounting	16.00%	19.00%	13.00%
Research and Development and Similar Costs
Research and development costs charged to expense	$ 98,000,000	$ 103,100,000	$ 147,900,000
Advertising
Advertising cost	23,000,000	21,600,000	22,100,000
Debt Disclosure [Abstract]
Amortization of Debt Issuance Costs	$ 3,000,000	$ 3,000,000	6,400,000
Write-off of Deferred Financing Costs			$ 3,300,000
Income Taxes
Number of steps to evaluate uncertain income tax positions (in steps) | Step	2
Minimum percentage likelihood of tax benefit being realized (as a percent)	50.00%
Maximum percentage likelihood of tax benefit being realized (as a percent)	50.00%
Amount of tax benefit realized for tax positions currently estimated to have a less than likelihood percentage of being sustained	$ 0
Cash and Cash Equivalents
Maximum remaining maturity period at time of purchase of liquid investments classified as cash equivalents (in months)	3 months
Inventories
Inventory valued using LIFO method (as a percent)	82.20%	81.60%
Defense | Operating Income (Loss) [Member] | Contracts Accounted for under Percentage of Completion [Member]
Change in Accounting Estimate [Line Items]
Change in Accounting Estimate, Description	6.3
Defense | Net Income [Domain] | Contracts Accounted for under Percentage of Completion [Member]
Change in Accounting Estimate [Line Items]
Change in Accounting Estimate, Description	3.9
Defense | Earnings Per Share [Domain] | Contracts Accounted for under Percentage of Completion [Member]
Change in Accounting Estimate [Line Items]
Change in Accounting Estimate, Description	.05

Summary of Significant Accoun57

Summary of Significant Accounting Policies (Details 2) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Goodwill
Percentage of importance to income approach used for evaluation of recoverability of goodwill (as a percent)	75.00%
Foreign Currency Translation
Net foreign currency transaction gains (losses) related to continuing operations	$ 0.2	$ (1.2)	$ (4.5)
Minimum | Buildings and improvements
Property Plant and Equipment
Useful life	10 years
Minimum | Machinery and equipment
Property Plant and Equipment
Useful life	4 years
Minimum | Software and Software Development Costs
Property Plant and Equipment
Useful life	3 years
Maximum | Buildings and improvements
Property Plant and Equipment
Useful life	40 years
Maximum | Machinery and equipment
Property Plant and Equipment
Useful life	25 years
Maximum | Software and Software Development Costs
Property Plant and Equipment
Useful life	10 years
Accounting Standards Update 2016-09 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Excess Tax Benefit from Share-based Compensation, Operating Activities		$ 6.2	$ 8.9

Receivables (Details)

Receivables (Details) - USD ($) $ in Millions	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
U.S. government:
Amounts billed	$ 137.8	$ 49
Cost and profits not billed	137.9	55.3
Contract receivables	275.7	104.3
Other trade receivables	985.4	881.8
Finance receivables	5.8	7.6
Notes receivable	34.2	36.1
Other receivables	46.3	38.6
Receivables, gross	1,347.4	1,068.4
Less allowance for doubtful accounts	(18.3)	(21.2)	$ (20.3)
Receivables, net	1,329.1	1,047.2
Classification of receivables
Current receivables	1,306.3	1,021.9
Long-term receivables	22.8	25.3
Receivables, net	$ 1,329.1	$ 1,047.2

Receivables (Details 2)

Receivables (Details 2) $ in Millions	12 Months Ended
	Sep. 30, 2017USD ($)Party	Sep. 30, 2016USD ($)
Change in allowance for doubtful accounts
Allowance for doubtful accounts at beginning of period	$ 21.2	$ 20.3
Provision for doubtful accounts, net of recoveries	0.8	2.7
Charge-off of accounts	(4.2)	(1.9)
Foreign currency translation	0.5	0.1
Allowance for doubtful accounts at end of period	$ 18.3	21.2
Credit Concentration Risk [Member] | Notes receivables
Receivable aging and accrual status
Concentration of risk	70.00%
Numbers of parties in receivable | Party	3
Finance receivables
Receivable aging and accrual status
Receivables on nonaccrual status	$ 3.7	4.5
Receivables past due 90 days or more and still accruing	0	0
Receivables subject to general reserves	2.1	3.1
Allowance for doubtful accounts	0	(0.1)
Financing Receivable, Individually Evaluated for Impairment	3.7	4.5
Allowance for doubtful accounts	(1.5)	(0.9)
Financing Receivable, Modifications, Recorded Investment	3.1
Change in allowance for doubtful accounts
Allowance for doubtful accounts at beginning of period	1	0.1
Provision for doubtful accounts, net of recoveries	1.4	0.9
Charge-off of accounts	(0.9)	0
Foreign currency translation	0	0
Allowance for doubtful accounts at end of period	1.5	1
Finance receivables | Financing Receivables, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Recorded Investment, Past Due	0	0
Finance receivables | Financing Receivables, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Recorded Investment, Past Due	0	0
Finance receivables | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Recorded Investment, Past Due	2.1	2.9
Notes receivables
Receivable aging and accrual status
Receivables on nonaccrual status	21.3	25.1
Receivables past due 90 days or more and still accruing	0	0
Receivables subject to general reserves	0	0
Allowance for doubtful accounts	0	0
Financing Receivable, Individually Evaluated for Impairment	34.2	36.1
Allowance for doubtful accounts	(10)	(13)
Financing Receivable, Modifications, Recorded Investment	10
Change in allowance for doubtful accounts
Allowance for doubtful accounts at beginning of period	13	12.7
Provision for doubtful accounts, net of recoveries	(1.3)	1.3
Charge-off of accounts	(2.2)	(1)
Foreign currency translation	0.5	0
Allowance for doubtful accounts at end of period	10	13
Notes receivables | Financing Receivables, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Recorded Investment, Past Due	0	0
Notes receivables | Financing Receivables, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Recorded Investment, Past Due	0	0
Notes receivables | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Recorded Investment, Past Due	0.2	0
Trade and other receivables
Change in allowance for doubtful accounts
Allowance for doubtful accounts at beginning of period	7.2	7.5
Provision for doubtful accounts, net of recoveries	0.7	0.5
Charge-off of accounts	(1.1)	(0.9)
Foreign currency translation	0	0.1
Allowance for doubtful accounts at end of period	$ 6.8	$ 7.2

Inventories (Details)

Inventories (Details) - USD ($) $ in Millions	Sep. 30, 2017	Sep. 30, 2016
Inventories
Raw materials	$ 578.1	$ 481.2
Partially finished products	336.6	307.8
Finished products	398.1	286.9
Inventories at FIFO cost	1,312.8	1,075.9
Less: Progress / performance-based payments on U.S. government contracts	(31.6)	(17.8)
Less: Excess of FIFO cost over LIFO cost	(82.8)	(78.3)
Inventories, net	$ 1,198.4	$ 979.8

Property, Plant and Equipment61

Property, Plant and Equipment (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Property, plant and equipment
Property, plant and equipment, gross	$ 1,188.8	$ 1,110.6
Less accumulated depreciation	(718.9)	(658.5)
Property, plant and equipment, net	469.9	452.1
Depreciation expenses	81.5	73.3	$ 64.9
Land and land improvements
Property, plant and equipment
Property, plant and equipment, gross	58.5	56.8
Buildings
Property, plant and equipment
Property, plant and equipment, gross	298.5	283.4
Machinery and equipment
Property, plant and equipment
Property, plant and equipment, gross	$ 652.2	597.3
Machinery and equipment | Minimum
Property, plant and equipment
Useful life	4 years
Machinery and equipment | Maximum
Property, plant and equipment
Useful life	25 years
Software and Software Development Costs
Property, plant and equipment
Property, plant and equipment, gross	$ 149.6	147.4
Software and Software Development Costs | Minimum
Property, plant and equipment
Useful life	3 years
Software and Software Development Costs | Maximum
Property, plant and equipment
Useful life	10 years
Equipment on operating lease to others
Property, plant and equipment
Property, plant and equipment, gross	$ 30	25.7
Equipment on operating lease, net	$ 21.6	$ 18.6
Equipment on operating lease to others | Minimum
Property, plant and equipment
Useful life	5 years
Equipment on operating lease to others | Maximum
Property, plant and equipment
Useful life	10 years

Goodwill and Purchased Intang62

Goodwill and Purchased Intangible Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Jul. 01, 2017	Sep. 30, 2016	Jul. 01, 2016
Carrying amount of goodwill by reportable segment
Minimum weighted-average cost of capital (as a percent)				9.00%		11.00%
Maximum weighted-average cost of capital (as a percent)				10.50%		12.00%
Terminal growth rate (as a percent)				3.00%		3.00%
Changes in goodwill
Net goodwill at the beginning of the period	$ 1,003.5	$ 1,001.1
Foreign currency translation	9.5	2.4
Net goodwill at the end of the period	1,013	1,003.5
Details of the Company's goodwill allocated to the reportable segments
Gross			$ 2,123		$ 2,113.5
Accumulated Impairment			(1,110)		(1,110)
Net	1,003.5	1,001.1	1,013		1,003.5
Access equipment
Changes in goodwill
Net goodwill at the beginning of the period	876.6	874.2
Foreign currency translation	9.3	2.4
Net goodwill at the end of the period	885.9	876.6
Details of the Company's goodwill allocated to the reportable segments
Gross			1,818		1,808.7
Accumulated Impairment			(932.1)		(932.1)
Net	876.6	874.2	885.9		876.6
Fire & emergency
Changes in goodwill
Net goodwill at the beginning of the period	106.1	106.1
Foreign currency translation	0	0
Net goodwill at the end of the period	106.1	106.1
Details of the Company's goodwill allocated to the reportable segments
Gross			108.1		108.1
Accumulated Impairment			(2)		(2)
Net	106.1	106.1	106.1		106.1
Commercial
Changes in goodwill
Net goodwill at the beginning of the period	20.8	20.8
Foreign currency translation	0.2	0
Net goodwill at the end of the period	21	20.8
Details of the Company's goodwill allocated to the reportable segments
Gross			196.9		196.7
Accumulated Impairment			(175.9)		(175.9)
Net	$ 20.8	$ 20.8	$ 21		$ 20.8
JLG Industries Inc And Its Wholly Owned Subsidiaries Member
Carrying amount of goodwill by reportable segment
Percentage of recorded goodwill and purchased intangibles concentrated within the JLG reporting unit in the access equipment segment (as a percent)				89.00%

Goodwill and Purchased Intang63

Goodwill and Purchased Intangible Assets (Details 3) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Purchased intangible assets
Weighted-Average Life (in years)	14 years 5 months	14 years 6 months
Gross	$ 731.5	$ 727.4
Accumulated Amortization	(611.5)	(561.6)
Net	120	165.8
Non-amortizable trade names	387.8	387.7
Intangible assets excluding goodwill, gross	1,119.3	1,115.1
Purchased intangible assets, net	507.8	$ 553.5
Future amortization expense of purchased intangible assets for the five years succeeding fiscal years
2,018	38.3
2,019	36.9
2,020	11
2,021	5.3
2,022	$ 4.9
Distribution network
Purchased intangible assets
Weighted-Average Life (in years)	39 years 1 month	39 years 1 month
Gross	$ 55.4	$ 55.4
Accumulated Amortization	(29.5)	(28)
Net	$ 25.9	$ 27.4
Distribution network | Pierce
Purchased intangible assets
Weighted-Average Life (in years)	40 years
Net	$ 25.1
Technology-related
Purchased intangible assets
Weighted-Average Life (in years)	11 years 11 months	11 years 11 months
Gross	$ 104.7	$ 104.7
Accumulated Amortization	(99.7)	(91.5)
Net	$ 5	$ 13.2
Customer relationships
Purchased intangible assets
Weighted-Average Life (in years)	12 years 9 months	12 years 9 months
Gross	$ 555	$ 550.8
Accumulated Amortization	(467.6)	(427.4)
Net	$ 87.4	$ 123.4
Other
Purchased intangible assets
Weighted-Average Life (in years)	16 years 4 months	16 years 4 months
Gross	$ 16.4	$ 16.5
Accumulated Amortization	(14.7)	(14.7)
Net	$ 1.7	$ 1.8

Other Long-Term Assets (Details

Other Long-Term Assets (Details) - USD ($) $ in Millions	Sep. 30, 2017	Sep. 30, 2016
Other Assets, Noncurrent Disclosure [Abstract]
Rabbi trust, less current portion	$ 20.6	$ 20.5
Customer notes receivable	25.7	30.8
Deferred Tax Assets, Net, Noncurrent	4.2	8.4
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	15.5	14.9
Other	11	24.4
Other long-term assets, gross	77	99
Less allowance for doubtful notes receivable	(8.6)	(11.8)
Other long-term assets, net	$ 68.4	$ 87.2

Leases (Details)

Leases (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Operating Leases
Rental expense for property, plant and equipment	$ 48	$ 45	$ 45.1
Operating Leases, 2018	24.3
Operating Leases, 2019	17.6
Operating Leases, 2020	13.6
Operating Leases, 2021	11.1
Operating Leases, 2022	5.7
Operating Leases, Thereafter	$ 7.7

Credit Agreements (Details)

Credit Agreements (Details) $ in Millions	12 Months Ended
	Sep. 30, 2017USD ($)	Sep. 30, 2015USD ($)	Sep. 30, 2016USD ($)	Mar. 02, 2015USD ($)	Mar. 21, 2014USD ($)	Feb. 21, 2014USD ($)
Long term debt
Long-term Debt, Gross	$ 835		$ 855
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net	(7.1)		(8.8)
Long-term Debt	827.9		846.2
Less current maturities	(20)		(20)
Long term debt net of current maturities	807.9		826.2
Debt, current
Revolving Credit Facility	0		0
Other short-term debt	3
Current maturities of long-term debt	20		20
Revolving line of credit and current maturities of long-term debt	$ 23		20
Dividend payment restriction under credit agreement
Debt Related Commitment Fees and Debt Issuance Costs		$ 14.7
Write-off of Deferred Financing Costs		3.3
Debt Issuance Costs, Gross		$ 3.7
Senior Secured Credit Agreement Member
Debt, current
Interest spread in basis points (as a percent)	1.50%
Maximum leverage ratio	4.5
Minimum interest coverage ratio	2.5
Debt Instrument, Covenant Terms, Senior Secured Leverage Ratio	3
Debt Instrument, Covenant Terms, Senior Secured Leverage Ratio without collateral	3.75
Dividend payment restriction under credit agreement
Percentage of consolidated net income of the Company and its subsidiaries accrued on a cummulative basis during the period beginning on January 1, 2010 and ending on the last day of the fiscal quarter	50.00%
Percentage of consolidated net deficit of the Company and its subsidiaries accrued on a cummulative basis during the period beginning on January 1, 2010 and ending on the last day of the fiscal quarter	100.00%
Percentage of aggregate net proceeds received by the Company subsequent ot March 3, 2010 as a contribution to its common equity or from the issuance and sale of its Common Stock	100.00%
Senior Secured Credit Agreement Member | Minimum
Debt, current
Revolving credit facility, unused commitment fee rate (as a percent)	0.225%
Senior Secured Credit Agreement Member | Maximum
Debt, current
Revolving credit facility, unused commitment fee rate (as a percent)	0.35%
Senior Secured Term Loan
Long term debt
Long-term Debt, Gross	$ 335		355
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net	(0.8)		(1.4)
Long-term Debt	334.2		353.6
Debt, current
Debt Instrument, Face Amount					$ 400
Quarterly principal installment, at commencement	5
Payment due at maturity	$ 310
Interest spread in basis points (as a percent)	1.50%
Weighted-average interest rate (as a percent)	2.74%
Dividend payment restriction under credit agreement
Fair value of debt	$ 334		354
Revolving Credit Facility [Member]
Debt, current
Maximum borrowing capacity	850				$ 600
Available borrowing capacity	753.1
5.375% Senior notes due March 2022 [Member]
Long term debt
Long-term Debt, Gross	250		250
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net	(3.5)		(4.3)
Long-term Debt	$ 246.5		$ 245.7
Debt, current
Debt instrument interest rate (as a percent)	5.375%		5.375%
Debt Instrument, Face Amount						$ 250
Dividend payment restriction under credit agreement
Fair value of debt	$ 260		$ 262
5.375% Senior notes due March 2025 [Member]
Long term debt
Long-term Debt, Gross	250		250
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net	(2.8)		(3.1)
Long-term Debt	$ 247.2		$ 246.9
Debt, current
Debt instrument interest rate (as a percent)	5.375%		5.375%
Debt Instrument, Face Amount				$ 250
Dividend payment restriction under credit agreement
Fair value of debt	$ 264		$ 263
Letter of credit
Debt, current
Letters of credit outstanding	$ 96.9
Letter of credit fees percentage on available borrowing capacity, low end of range (as a percent)	0.625%
Letter of credit fees percentage on available borrowing capacity, high end of range (as a percent)	2.00%
Credit agreement - dollar-denominated loans | Debt Instrument Variable Rate Base Federal Member
Debt, current
Interest spread in basis points (as a percent)	0.50%
Credit agreement - dollar-denominated loans | LIBOR
Debt, current
Interest spread in basis points (as a percent)	1.00%

Warranties (Details)

Warranties (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Product Warranties Disclosures [Abstract]
Extended Product Warranty Accrual	$ 30.8	$ 30.4
Product warranty, minimum	6 months
Product warranty, maximum	5 years
Warranty costs	$ 60.4	46.8	$ 42.3
Changes in warranty liability
Balance at beginning of year	89.6	92.1
Warranty provisions	57.4	45.9
Settlements made	(51.8)	(52.5)
Change in liability for pre-existing warranties, net	2.5	0.9
Premiums Received	12.4	14.8
Amortization of premiums received	(12)	(11.3)
Foreign currency translation	0.7	(0.3)
Balance at end of year	$ 98.8	$ 89.6	$ 92.1

Guarantee Arrangements (Details

Guarantee Arrangements (Details) - Customer obligation guarantees - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Guarantee Obligations
Guarantee obligations, maximum exposure	$ 101.9	$ 116.3
Aggregate amount of indebtedness which the Company is a party to through guarantee agreements	568.2	563.2
Changes in provision for loss on customer guarantees
Balance at beginning of year	8.4	5.6
Provision for new credit guarantees	3.2	4.1
Change for pre-existing guarantees, net	0.5	1.7
Amortization of previous guarantees	(3.1)	(3)
Foreign currency translation	0.1	0
Balance at end of year	$ 9.1	$ 8.4

Shareholders' Equity (Details)

Shareholders' Equity (Details) - USD ($) $ in Millions	12 Months Ended		25 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2017	Aug. 31, 2015
Stockholders' Equity Note [Abstract]
Number of shares of common stock authorized for buyback (in shares)				10,000,000
Remaining number of shares authorized to be repurchased (in shares)			7,512,574	10,299,198
Shares repurchased under authorization (in shares)	2,500,000	4,900,000	2,786,624
Aggregate cost of common stock repurchased	$ 100.1	$ 200.4	$ 112

Derivative Financial Instrume70

Derivative Financial Instruments and Hedging Activities (Details) $ in Millions	Sep. 30, 2017USD ($)
Not designated as hedging instruments
Open derivative instruments
Derivative, Notional Amount	$ 79.3
Interest Rate Contract [Member] | Not designated as hedging instruments
Open derivative instruments
Derivative, Notional Amount	11.7
Cash Flow Hedging [Member] | Foreign Exchange Contract [Member] | Designated as hedging instrument
Open derivative instruments
Derivative, Notional Amount	$ 7.9

Derivative Financial Instrume71

Derivative Financial Instruments and Hedging Activities (Details 2) - USD ($) $ in Millions	Sep. 30, 2017	Sep. 30, 2016
Other Current Assets
Fair values of open derivative instruments
Fair value of derivative assets	$ 0.8	$ 0.1
Other Current Liabilities
Fair values of open derivative instruments
Fair value of derivative liabilities	1.9	0.8
Not designated as hedging instruments | Foreign exchange contracts | Other Current Assets
Fair values of open derivative instruments
Fair value of derivative assets	0.5	0.1
Not designated as hedging instruments | Foreign exchange contracts | Other Current Liabilities
Fair values of open derivative instruments
Fair value of derivative liabilities	0.8	0.4
Not designated as hedging instruments | Interest Rate Contract [Member] | Other Current Assets
Fair values of open derivative instruments
Fair value of derivative assets	0.3	0
Not designated as hedging instruments | Interest Rate Contract [Member] | Other Current Liabilities
Fair values of open derivative instruments
Fair value of derivative liabilities	0.7	0.4
Cash Flow Hedging [Member] | Designated as hedging instrument | Foreign exchange contracts | Other Current Assets
Fair values of open derivative instruments
Fair value of derivative assets	0	0
Cash Flow Hedging [Member] | Designated as hedging instrument | Foreign exchange contracts | Other Current Liabilities
Fair values of open derivative instruments
Fair value of derivative liabilities	$ 0.4	$ 0

Derivative Financial Instrume72

Derivative Financial Instruments and Hedging Activities (Details 3) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Pre-tax gains (losses) on derivative instruments
Total pre-tax effects of derivative instruments	$ 3.4	$ (8)	$ 13
Designated as hedging instrument | Cash Flow Hedging [Member] | Foreign exchange contracts | Net sales
Pre-tax gains (losses) on derivative instruments
Reclassified from other comprehensive income (effective portion):	(0.1)	0	0
Designated as hedging instrument | Cash Flow Hedging [Member] | Foreign exchange contracts | Other Nonoperating Income (Expense) [Member]
Pre-tax gains (losses) on derivative instruments
Reclassified from other comprehensive income (effective portion):	(0.1)	(0.2)	0.1
Designated as hedging instrument | Cash Flow Hedging [Member] | Foreign exchange contracts | Cost of Sales [Member]
Pre-tax gains (losses) on derivative instruments
Reclassified from other comprehensive income (effective portion):	(0.1)	0	0.2
Not designated as hedging instruments | Foreign exchange contracts | Other Nonoperating Income (Expense) [Member]
Pre-tax gains (losses) on derivative instruments
Not designated as hedges	3.5	(7.6)	12.7
Not designated as hedging instruments | Interest Rate Contract [Member] | Other Nonoperating Income (Expense) [Member]
Pre-tax gains (losses) on derivative instruments
Not designated as hedges	$ 0.2	$ (0.2)	$ 0

Fair Value Measurement (Details

Fair Value Measurement (Details) - Fair value measured on recurring basis - USD ($) $ in Millions		Sep. 30, 2017	Sep. 30, 2016
Assets:
Foreign currency exchange derivatives	[1]	$ 0.5	$ 0.1
Interest Rate Derivative Assets, at Fair Value	[2]	0.3
Liabilities:
Foreign currency exchange derivatives	[1]	1.2	0.4
Interest Rate Derivative Liabilities, at Fair Value	[2]	0.7	0.4
Quoted Prices for Identical Assets (Level 1)
Assets:
Foreign currency exchange derivatives	[1]	0	0
Interest Rate Derivative Assets, at Fair Value	[2]	0
Liabilities:
Foreign currency exchange derivatives	[1]	0	0
Interest Rate Derivative Liabilities, at Fair Value	[2]	0	0
Significant Other Observable Inputs (Level 2)
Assets:
Foreign currency exchange derivatives	[1]	0.5	0.1
Interest Rate Derivative Assets, at Fair Value	[2]	0.3
Liabilities:
Foreign currency exchange derivatives	[1]	1.2	0.4
Interest Rate Derivative Liabilities, at Fair Value	[2]	0.7	0.4
Significant Unobservable Inputs (Level 3)
Assets:
Foreign currency exchange derivatives	[1]	0	0
Interest Rate Derivative Assets, at Fair Value	[2]	0
Liabilities:
Foreign currency exchange derivatives	[1]	0	0
Interest Rate Derivative Liabilities, at Fair Value	[2]	0	0
Supplemental Executive Retirement Plans
Assets:
SERP plan assets	[3]	21.7	21.7
Supplemental Executive Retirement Plans | Quoted Prices for Identical Assets (Level 1)
Assets:
SERP plan assets	[3]	21.7	21.7
Supplemental Executive Retirement Plans | Significant Other Observable Inputs (Level 2)
Assets:
SERP plan assets	[3]	0	0
Supplemental Executive Retirement Plans | Significant Unobservable Inputs (Level 3)
Assets:
SERP plan assets	[3]	$ 0	$ 0
[1]	Based on observable market transactions of forward currency prices.
[2]	Based on observable market transactions of interest rate swap prices.
[3]	Represents investments in a rabbi trust for the Company's non-qualified SERP. The fair values of these investments are determined using a market approach. Investments include mutual funds for which quoted prices in active markets are available. The Company records changes in the fair value of investments in “Miscellaneous, net” in the Consolidated Statements of Income.

Stock-Based Compensation (Detai

Stock-Based Compensation (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	12 Months Ended
	Oct. 31, 2016	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award
Common stock reserved for issuance stock awards (in shares)					8,930,655
Equity-based compensation plans
Number of Securities to be Issued Upon Exercise of Outstanding Options or Vesting of Performance Share Awards (in shares)		2,190,550
Weighted-Average Exercise Price of Outstanding Options (in dollars per share)		$ 45.14			$ 45.14
Number of Securities Remaining Available for Future Issuance Under Equity Compensation Plans (in shares)		6,740,105
Stock-based compensation expense		$ 26.2	$ 23	$ 21.4
Income tax benefit recognized for stock-based compensation		(9.6)	(8.4)	(7.9)
Stock-based compensation expense, net of tax		$ 16.6	14.6	13.5
Weighted-Average Exercise Price
Options outstanding, end of year (in dollars per share)		$ 45.14
Stock Options Outstanding and Exercisable
Stock Option Awards Outstanding, Weighted-Average Exercise Price, (in dollars per share)		$ 45.14			45.14
Proceeds from exercise of stock options		$ 39.9	21.7	8.6
Equity compensation plans approved by security holders Member
Equity-based compensation plans
Number of Securities to be Issued Upon Exercise of Outstanding Options or Vesting of Performance Share Awards (in shares)		2,190,550
Weighted-Average Exercise Price of Outstanding Options (in dollars per share)		$ 45.14			45.14
Number of Securities Remaining Available for Future Issuance Under Equity Compensation Plans (in shares)		6,740,105
Weighted-Average Exercise Price
Options outstanding, end of year (in dollars per share)		$ 45.14
Stock Options Outstanding and Exercisable
Stock Option Awards Outstanding, Weighted-Average Exercise Price, (in dollars per share)		$ 45.14			45.14
Equity Compensation Plans Not Approved By Security Holders Member
Equity-based compensation plans
Number of Securities to be Issued Upon Exercise of Outstanding Options or Vesting of Performance Share Awards (in shares)		0
Weighted-Average Exercise Price of Outstanding Options (in dollars per share)		$ 0			0
Number of Securities Remaining Available for Future Issuance Under Equity Compensation Plans (in shares)		0
Weighted-Average Exercise Price
Options outstanding, end of year (in dollars per share)		$ 0
Stock Options Outstanding and Exercisable
Stock Option Awards Outstanding, Weighted-Average Exercise Price, (in dollars per share)		$ 0			$ 0
Performance Shares [Member]
Equity-based compensation plans
Stock-based compensation expense		$ 3.3	2.3	3.9
Income tax benefit recognized for stock-based compensation		$ (0.9)	(1.3)	(4.1)
Stock Options Outstanding and Exercisable
Unrecognized compensation expense					$ 4.2
Weighted-average period for unrecognized compensation expense to be recognized (in years)		1 year 10 months
Stock options
Share-based Compensation Arrangement by Share-based Payment Award
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value		$ 24	12.6	5
Employee Service Share-based Compensation, Tax Benefit from Exercise of Stock Options		$ 8.8	$ 4.6	$ 1.8
Tenure of award (in years)		10 years
Period over which awards are exercisable in equal installments, beginning with the first anniversary of the date of grant of awards (in years)		3 years
Equity-based compensation plans
Weighted-Average Exercise Price of Outstanding Options (in dollars per share)	$ 39.55	$ 39.55	$ 36.57	$ 36.20	$ 45.14
Stock-based compensation expense		$ 7.5	$ 6.7	$ 6
Options
Options outstanding, beginning of year (in shares)	2,104,929	2,104,929	2,369,872	2,690,507
Options granted (in shares)		393,975	567,550	6,725
Options forfeited (in shares)		(11,145)	(70,177)	(25,215)
Options expired (in shares)		0	(43,392)	(24,866)
Options exercised (in shares)		(956,068)	(718,924)	(277,279)
Options outstanding, end of year (in shares)		1,531,691	2,104,929	2,369,872
Options exercisable, end of year (in shares)		819,906	1,473,761	1,939,478
Weighted-Average Exercise Price
Options outstanding, beginning of year (in dollars per share)	$ 39.55	$ 39.55	$ 36.57	$ 36.20
Options granted (in dollars per share)		66.89	41.52	44.92
Options forfeited (in dollars per share)		52.54	44.31	42.20
Options expired (in dollars per share)		0	49.19	54.41
Options exercised (in dollars per share)		41.70	30.25	31.05
Options outstanding, end of year (in dollars per share)		45.14	39.55	36.57
Options exercisable, end of year (in dollars per share)		$ 36.47	$ 38.28	$ 34.25
Stock Options Outstanding and Exercisable
Stock Option Awards Outstanding, Number Outstanding (in shares)	2,104,929	2,104,929	2,369,872	2,690,507	1,531,691
Stock Option Awards Outstanding, Weighted-Average Remaining Contractual Life, (in years)		4 years 2 months
Stock Option Awards Outstanding, Weighted-Average Exercise Price, (in dollars per share)	$ 39.55	$ 39.55	$ 36.57	$ 36.20	$ 45.14
Stock Option Awards Outstanding, Aggregate Intrinsic Value					$ 57.3
Stock Option Awards Exercisable, Number Exercisable (in shares)		819,906	1,473,761	1,939,478	819,906
Stock Option Awards Exercisable, Weighted-Average Remaining Contractual Life (in years)		3 years
Stock Option Awards Exercisable, Weighted-Average Exercise Price (in dollars per share)		$ 36.47	$ 38.28	$ 34.25	$ 36.47
Stock Option Awards Exercisable, Aggregate Intrinsic Value					$ 37.8
Unrecognized compensation expense					$ 3
Weighted-average period for unrecognized compensation expense to be recognized (in years)		1 year 11 months
Assumptions:
Expected term (in years)		5 years 1 month	5 years 1 month	5 years 1 month
Expected volatility (as a percent)		37.30%	40.40%	42.08%
Risk-free interest rate (as a percent)		1.79%	1.73%	1.55%
Expected dividend yield (as a percent)		1.52%	1.65%	1.25%
Weighted-average per share fair values for stock option granted (in dollars per share)		$ 20.43	$ 13.44	$ 15.54
Stock options | Price Range, $7.95 - $19.24
Equity-based compensation plans
Weighted-Average Exercise Price of Outstanding Options (in dollars per share)		$ 14.54			$ 14.54
Options
Options outstanding, end of year (in shares)		123,234
Options exercisable, end of year (in shares)		123,234
Weighted-Average Exercise Price
Options outstanding, end of year (in dollars per share)		$ 14.54
Options exercisable, end of year (in dollars per share)		14.54
Stock Options Outstanding and Exercisable
Stock Option Awards Outstanding, Exercise Prices, Low End of Range (in dollars per share)		7.95
Stock Option Awards Outstanding, Exercise Prices, High End of Range (in dollars per share)		$ 19.24
Stock Option Awards Outstanding, Number Outstanding (in shares)		123,234			123,234
Stock Option Awards Outstanding, Weighted-Average Remaining Contractual Life, (in years)		1 year
Stock Option Awards Outstanding, Weighted-Average Exercise Price, (in dollars per share)		$ 14.54			$ 14.54
Stock Option Awards Outstanding, Aggregate Intrinsic Value					$ 8.4
Stock Option Awards Exercisable, Number Exercisable (in shares)		123,234			123,234
Stock Option Awards Exercisable, Weighted-Average Remaining Contractual Life (in years)		1 year
Stock Option Awards Exercisable, Weighted-Average Exercise Price (in dollars per share)		$ 14.54			$ 14.54
Stock Option Awards Exercisable, Aggregate Intrinsic Value					$ 8.4
Stock options | Price Range, $28.96 - $41.59
Equity-based compensation plans
Weighted-Average Exercise Price of Outstanding Options (in dollars per share)		$ 37.55			$ 37.55
Options
Options outstanding, end of year (in shares)		684,477
Options exercisable, end of year (in shares)		355,034
Weighted-Average Exercise Price
Options outstanding, end of year (in dollars per share)		$ 37.55
Options exercisable, end of year (in dollars per share)		33.87
Stock Options Outstanding and Exercisable
Stock Option Awards Outstanding, Exercise Prices, Low End of Range (in dollars per share)		28.96
Stock Option Awards Outstanding, Exercise Prices, High End of Range (in dollars per share)		$ 41.59
Stock Option Awards Outstanding, Number Outstanding (in shares)		684,477			684,477
Stock Option Awards Outstanding, Weighted-Average Remaining Contractual Life, (in years)		4 years
Stock Option Awards Outstanding, Weighted-Average Exercise Price, (in dollars per share)		$ 37.55			$ 37.55
Stock Option Awards Outstanding, Aggregate Intrinsic Value					$ 30.8
Stock Option Awards Exercisable, Number Exercisable (in shares)		355,034			355,034
Stock Option Awards Exercisable, Weighted-Average Remaining Contractual Life (in years)		3 years
Stock Option Awards Exercisable, Weighted-Average Exercise Price (in dollars per share)		$ 33.87			$ 33.87
Stock Option Awards Exercisable, Aggregate Intrinsic Value					$ 17.3
Stock options | Price Range, $46.94 - $66.89
Equity-based compensation plans
Weighted-Average Exercise Price of Outstanding Options (in dollars per share)		$ 57.51			$ 57.51
Options
Options outstanding, end of year (in shares)		723,980
Options exercisable, end of year (in shares)		341,638
Weighted-Average Exercise Price
Options outstanding, end of year (in dollars per share)		$ 57.51
Options exercisable, end of year (in dollars per share)		47.07
Stock Options Outstanding and Exercisable
Stock Option Awards Outstanding, Exercise Prices, Low End of Range (in dollars per share)		46.94
Stock Option Awards Outstanding, Exercise Prices, High End of Range (in dollars per share)		$ 66.89
Stock Option Awards Outstanding, Number Outstanding (in shares)		723,980			723,980
Stock Option Awards Outstanding, Weighted-Average Remaining Contractual Life, (in years)		5 years
Stock Option Awards Outstanding, Weighted-Average Exercise Price, (in dollars per share)		$ 57.51			$ 57.51
Stock Option Awards Outstanding, Aggregate Intrinsic Value					$ 18.1
Stock Option Awards Exercisable, Number Exercisable (in shares)		341,638			341,638
Stock Option Awards Exercisable, Weighted-Average Remaining Contractual Life (in years)		3 years 6 months
Stock Option Awards Exercisable, Weighted-Average Exercise Price (in dollars per share)		$ 47.07			$ 47.07
Stock Option Awards Exercisable, Aggregate Intrinsic Value					$ 12.1
Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value		$ 2.9	$ 1.2	$ 2.1
Equity-based compensation plans
Stock-based compensation expense		$ 3.3	$ 3.4	(0.9)
Stock Options Outstanding and Exercisable
Unrecognized compensation expense					0.2
Weighted-average period for unrecognized compensation expense to be recognized (in years)		1 year 1 month
Stock Award Activity
Granted (in shares)		11,750	27,900
Nonvested Stock Awards Member
Equity-based compensation plans
Stock-based compensation expense		$ 11.6	$ 9.7	11.5
Income tax benefit recognized for stock-based compensation		$ (4.1)	(3.9)	(5.3)
Stock Options Outstanding and Exercisable
Unrecognized compensation expense					8.1
Weighted-average period for unrecognized compensation expense to be recognized (in years)		2 years
Weighted-Average Per Share Fair Value
Fair value of shares vested		$ 11.2	$ 10.7	$ 14.3
Nonvested Equity Options [Member]
Stock Award Activity
Nonvested, beginning of year (in shares)	313,806	313,806	273,992	609,869
Granted (in shares)		214,325	323,800	37,725
Forfeited (in shares)		(16,381)	(53,928)	(17,606)
Vested (in shares)		(159,591)	(230,058)	(355,996)
Nonvested, end of year (in shares)		352,159	313,806	273,992
Weighted-Average Per Share Fair Value
Nonvested, beginning of year (in dollars per share)	$ 42.93	$ 42.93	$ 46.84	$ 41.70
Granted (in dollars per share)		66.84	40.33	44.50
Forfeited (in dollars per share)		51.67	45.71	41.36
Vested (in dollars per share)		47.01	43.28	38.06
Nonvested, end of year (in dollars per share)		$ 55.22	$ 42.93	$ 46.84
Nonvested Performance Share Awards [Member]
Stock Award Activity
Nonvested, beginning of year (in shares)	103,550	103,550	129,475	257,475
Granted (in shares)		49,800	78,175	0
Forfeited (in shares)		0	(31,326)	0
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Other		36,750	(27,874)	(44,800)
Vested (in shares)		(73,500)	(44,900)	(83,200)
Nonvested, end of year (in shares)		116,600	103,550	129,475
Weighted-Average Per Share Fair Value
Nonvested, beginning of year (in dollars per share)	$ 49.83	$ 49.83	$ 54.94	$ 45.44
Granted (in dollars per share)		79.01	47.07	0
Forfeited (in dollars per share)		0	52.90	0
Share-based Compensation Arrangements by Share-based Payment Award, Options, Other Share Increase (Decrease) in Period, Weighted Average Exercise Price		54.84	54.71	35.84
Vested (in dollars per share)		54.84	54.59	35.84
Nonvested, end of year (in dollars per share)		$ 60.71	$ 49.83	$ 54.94
Period over which shareholder return compares favorably to that of a competitor group of companies for purposes of calculating executive performance shares earned (in years)		3 years
Potential payouts, low end of range (as a percent)		0.00%
Potential payouts, high end of range (as a percent)		200.00%
Cash-based restricted stock awards
Equity-based compensation plans
Stock-based compensation expense		$ 0.5	$ 0.9	$ 0.9
Stock Options Outstanding and Exercisable
Unrecognized compensation expense					$ 0.4
Weighted-average period for unrecognized compensation expense to be recognized (in years)		1 year 5 months
Stock Award Activity
Granted (in shares)		7,125	13,700
Weighted-Average Per Share Fair Value
Fair value of shares vested		$ 0.5	$ 0.6	$ 2.1
Total Shareholder Return [Member] | Performance Shares [Member]
Assumptions:
Expected term (in years)		2 years 10 months 10 days	2 years 10 months 18 days
Expected volatility (as a percent)		34.09%	33.28%
Risk-free interest rate (as a percent)		1.32%	1.20%
Weighted-Average Per Share Fair Value
Nonvested, beginning of year (in dollars per share)	$ 54.33	$ 54.33
Nonvested, end of year (in dollars per share)		$ 96.47	$ 54.33
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures	75,495
Total Shareholder Return [Member] | Nonvested Performance Share Awards [Member]
Weighted-Average Per Share Fair Value
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percent		200.00%	80.00%	65.00%

Restructuring and Other Charg75

Restructuring and Other Charges Restructuring and Other Charges (Details) - USD ($) $ in Millions	3 Months Ended					12 Months Ended
	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Jan. 26, 2017	Sep. 21, 2016
Restructuring Cost and Reserve [Line Items]
Restructuring provision	$ 15.8	$ 11.1	$ 17.6	$ 0.7	$ 27.8	$ 35.8	$ 27.8
Employee Severance and Termination Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring provision						27.3	0.9
Property, Plant and Equipment Impairment
Restructuring Cost and Reserve [Line Items]
Restructuring provision						4.3	26.9
Other Restructuring Costs
Restructuring Cost and Reserve [Line Items]
Restructuring provision						4.2	0
Access Equipment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring provision						35.8	27.8
Access Equipment [Member] | Employee Severance and Termination Benefits | Cost of Sales [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring provision						35.8	0.9
Access Equipment [Member] | Property, Plant and Equipment Impairment
Restructuring Cost and Reserve [Line Items]
Restructuring provision							26.9
Access Equipment [Member] | Property, Plant and Equipment Impairment | Operating Expenses
Restructuring Cost and Reserve [Line Items]
Restructuring provision							26.9
Access Equipment [Member] | Other Restructuring Costs | Operating Expenses
Restructuring Cost and Reserve [Line Items]
Restructuring provision						0
Access Equipment Restructuring Plan 1 | Access Equipment [Member] | Employee Severance and Termination Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost									$ 3
Restructuring provision						1.9	$ 0.9
Access Equipment Restructuring Plan 2 | Access Equipment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring provision						33.9
Access Equipment Restructuring Plan 2 | Access Equipment [Member] | Facility Closing
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost								$ 50
Access Equipment Restructuring Plan 2 | Access Equipment [Member] | Other Restructuring Costs
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost								$ 11
Restructuring provision						$ 9.4

Restructuring and Other Charg76

Restructuring and Other Charges Restructuring and Other Changes (Details 2) - USD ($) $ in Millions	3 Months Ended					12 Months Ended
	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Restructuring Reserve [Roll Forward]
Beginning Balance				$ 0.9		$ 0.9	$ 0
Restructuring provision	$ 15.8	$ 11.1	$ 17.6	0.7	$ 27.8	35.8	27.8
Utilized - cash						(13)
Utilized - noncash						(4.3)	(26.9)
Foreign currency translation						1.4
Ending Balance	20.8				0.9	20.8	0.9
Employee Severance and Termination Benefits
Restructuring Reserve [Roll Forward]
Beginning Balance				0.9		0.9	0
Restructuring provision						27.3	0.9
Utilized - cash						(9.7)
Utilized - noncash						0	0
Foreign currency translation						1.3
Ending Balance	19.8				0.9	19.8	0.9
Property, Plant and Equipment Impairment
Restructuring Reserve [Roll Forward]
Beginning Balance				0		0	0
Restructuring provision						4.3	26.9
Utilized - cash						0
Utilized - noncash						(4.3)	(26.9)
Foreign currency translation						0
Ending Balance	0				0	0	0
Other Restructuring Costs
Restructuring Reserve [Roll Forward]
Beginning Balance				$ 0		0	0
Restructuring provision						4.2	0
Utilized - cash						(3.3)
Utilized - noncash						0	0
Foreign currency translation						0.1
Ending Balance	$ 1				$ 0	1	0
Access Equipment [Member]
Restructuring Reserve [Roll Forward]
Restructuring provision						35.8	27.8
Access Equipment [Member] | Property, Plant and Equipment Impairment
Restructuring Reserve [Roll Forward]
Restructuring provision							26.9
Cost of Sales [Member] | Access Equipment [Member] | Employee Severance and Termination Benefits
Restructuring Reserve [Roll Forward]
Restructuring provision						35.8	0.9
Operating Expenses | Access Equipment [Member] | Property, Plant and Equipment Impairment
Restructuring Reserve [Roll Forward]
Restructuring provision							$ 26.9
Operating Expenses | Access Equipment [Member] | Other Restructuring Costs
Restructuring Reserve [Roll Forward]
Restructuring provision						$ 0

Employee Benefit Plans (Details

Employee Benefit Plans (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Amounts included in accumulated other comprehensive income (loss) prior service costs and unrecognized net actuarial losses expected to be recognized in Pension and Supplemental Employee Retirement Plan
Prior service cost included in accumulated other comprehensive income (loss)	$ 1.8
Prior service cost included in accumulated other comprehensive income (loss), net of tax	1.1
Unrecognized net actuarial losses included in accumulated other comprehensive income (loss)	1.9
Unrecognized net actuarial losses included in accumulated other comprehensive income (loss), net of tax	1.2
Pension Plan, Defined Benefit
Employee benefit plans
Accumulated benefit obligation	468.9	$ 474.9
Change in projected benefit obligation
Benefit obligation at the beginning of the period	482.3	414.9
Service cost	10.7	8.8	$ 8.2
Interest cost	17.8	18.3	18.1
Actuarial loss (gain)	(12.1)	56.4
Defined Benefit Plan, Benefit Obligation, Contributions by Plan Participant	0.2	0.2
Plan amendments	0	1.1
Curtailments	0.5	0
Benefits paid	(26.6)	(13.2)
Currency translation adjustments	0.9	(4.2)
Benefit obligation at the end of the period	473.7	482.3	414.9
Change in plan assets
Fair value of plan assets at the beginning of the period	334	312.5
Actual return on plan assets	43.5	37.7
Company contributions	17.7	3.1
Expenses paid	(1.9)	(2.2)
Benefits paid	(26.6)	(13.2)
Currency translation adjustments	0.9	(4.1)
Fair value of plan assets at the end of the period	367.8	334	312.5
Funded status of plan - underfunded at September 30	(105.9)	(148.3)
Recognized in consolidated balance sheet at September 30
Accrued benefit liability (current liability)	(1.9)	(2)
Accrued benefit liability (long-term liability)	(104)	(146.3)
Total	(105.9)	(148.3)
Recognized in accumulated other comprehensive income (loss) as of September 30 (net of taxes)
Net actuarial (loss) gain	(41.7)	(69)
Prior service (cost) benefit	(7.9)	(9.1)
Total	$ (49.6)	$ (78.1)
Weighted-average assumptions as of September 30
Discount rate (as a percent)	3.85%	3.70%
Expected return on plan assets (as a percent)	5.93%	5.78%
Accumulated benefit obligations in excess of plan assets
Projected benefit obligation	$ 473.7	$ 482.3
Accumulated benefit obligation	468.9	474.9
Fair value of plan assets	367.8	334
Components of net periodic benefit cost
Service cost	10.7	8.8	8.2
Interest cost	17.8	18.3	18.1
Expected return on plan assets	(17.9)	(17.4)	(17.9)
Amortization of prior service cost (benefit)	1.8	1.8	1.7
Curtailment/settlement	0.5	0	0
Amortization of net actuarial loss (gain)	4.5	2.3	2.6
Expenses paid	1.9	2.2	2.8
Net periodic benefit cost (income)	19.3	16	15.5
Other changes in plan assets and benefit obligations recognized in other comprehensive income
Net actuarial loss (gain)	(37.8)	36.6	10
Prior service cost	0	1.1	1.1
Amortization of prior service benefit (cost)	(1.8)	(1.8)	(1.7)
Curtailment/settlement	0	0	0
Amortization of net actuarial (loss) gain	(4.5)	(2.3)	(2.6)
Total	$ (44.1)	$ 33.6	$ 6.8
Weighted-average assumptions
Discount rate (as a percent)	3.70%	4.45%	4.52%
Expected return on plan assets (as a percent)	5.78%	6.03%	6.25%
Supplemental Executive Retirement Plans
Employee benefit plans
Pension and Other Postretirement Defined Benefit Plans, Liabilities	$ 2	$ 1.8	$ 0.8
Other Postretirement Benefits Plan [Member]
Employee benefit plans
Accumulated benefit obligation	50	47.2
Change in projected benefit obligation
Benefit obligation at the beginning of the period	47.2	37.5
Service cost	2.5	2	1.7
Interest cost	1.6	1.5	1.7
Actuarial loss (gain)	0.5	8.3
Defined Benefit Plan, Benefit Obligation, Contributions by Plan Participant	0	0
Plan amendments	0	0
Curtailments	0	0
Benefits paid	(1.8)	(2.1)
Currency translation adjustments	0	0
Benefit obligation at the end of the period	50	47.2	37.5
Change in plan assets
Fair value of plan assets at the beginning of the period	0	0
Actual return on plan assets	0	0
Company contributions	1.8	2.1
Expenses paid	0	0
Benefits paid	(1.8)	(2.1)
Currency translation adjustments	0	0
Fair value of plan assets at the end of the period	0	0	0
Funded status of plan - underfunded at September 30	(50)	(47.2)
Recognized in consolidated balance sheet at September 30
Accrued benefit liability (current liability)	(1.1)	(1.5)
Accrued benefit liability (long-term liability)	(48.9)	(45.7)
Total	(50)	(47.2)
Recognized in accumulated other comprehensive income (loss) as of September 30 (net of taxes)
Net actuarial (loss) gain	(4.6)	(4.5)
Prior service (cost) benefit	8	8.7
Total	$ 3.4	$ 4.2
Weighted-average assumptions as of September 30
Discount rate (as a percent)	3.71%	3.47%
Components of net periodic benefit cost
Service cost	$ 2.5	$ 2	1.7
Interest cost	1.6	1.5	1.7
Expected return on plan assets	0	0	0
Amortization of prior service cost (benefit)	(0.9)	(0.9)	(0.9)
Curtailment/settlement	0	0	(3.4)
Amortization of net actuarial loss (gain)	0.2	(0.1)	0.1
Expenses paid	0	0	0
Net periodic benefit cost (income)	3.4	2.5	(0.8)
Other changes in plan assets and benefit obligations recognized in other comprehensive income
Net actuarial loss (gain)	0.5	8.3	(7.7)
Prior service cost	0	0	0
Amortization of prior service benefit (cost)	0.9	0.9	0.9
Curtailment/settlement	0	0	3.4
Amortization of net actuarial (loss) gain	(0.2)	0.1	(0.1)
Total	$ 1.2	$ 9.3	$ (3.5)
Weighted-average assumptions
Discount rate (as a percent)	3.47%	4.08%	4.04%
Health care cost trend rate
Health care cost trend rate (as a percent)	7.00%
Assumed health care cost trend rate for next fiscal year (as a percent)	5.00%
Increase in accumulated postretirement benefit obligation with 100 basis points increase in health care cost trend rate	$ 12.9
Increase in net periodic postretirement benefit cost with 100 basis points increase in health care cost trend rate	2.1
Decrease in accumulated postretirement benefit obligation with 100 basis points decrease in health care cost trend rate	9.1
Decrease in net periodic postretirement benefit cost with 100 basis points decrease in health care cost trend rate	$ 1.4

Employee Benefit Plans - Costs

Employee Benefit Plans - Costs (Details) - USD ($) $ in Millions		12 Months Ended
		Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Employee benefit plans
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year, Description		15
Multi-Employer Pension Plans
Maximum Percent of Total Plan Contributions Contributed to Multi-employer Plan		5.00%	5.00%	5.00%
Multiemployer plan period contributions		$ 1.2	$ 1.2	$ 1.2
401(k) plans
Percentage contribution by employees for defined contribution 401(k) plans, low end of range (as a percent)		2.00%
Percentage contribution by employees for defined contribution 401(k) plans, high end of range (as a percent)		100.00%
Amounts expensed (income recognized) for matching and discretionary contributions		$ 37.6	35.6	33.4
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Unfunded Commitments		$ 0	$ 0
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Investment Redemption, Frequency		N/A	N/A
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Investment Redemption, Notice Period	[1]	15 days	15 days
Supplemental Executive Retirement Plans
401(k) plans
Pension and Other Postretirement Defined Benefit Plans, Liabilities		$ 2	$ 1.8	0.8
Other Postretirement Benefits Plan [Member]
Plan assets, actual allocation
Total assets - at fair value		0	0	0
Estimated future benefit payment under company sponsored plans
2,018		1.1
2,019		1.6
2,020		2.2
2,021		2.7
2,022		3.1
2023-2027		$ 20.8
Pension Plan, Defined Benefit
Plan assets, actual allocation
Total assets (as a percent)		100.00%
Total assets - at fair value		$ 367.8	334	$ 312.5
Fair value of plan assets that are classified in the fair value hierarchy		178.2	162.7
Estimated future benefit payment under company sponsored plans
2,018		12.3
2,019		13.5
2,020		14.9
2,021		16.2
2,022		17.5
2023-2027		107
401(k) plans
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Unfunded Commitments	[2]	$ 189.6	171.3
Pension Plan, Defined Benefit | Large-cap Equity Funds [Member]
Plan assets, actual allocation
Total assets (as a percent)		34.00%
Pension Plan, Defined Benefit | Fixed income
Plan assets, actual allocation
Total assets (as a percent)		37.00%
Pension Plan, Defined Benefit | Other
Plan assets, actual allocation
Total assets (as a percent)		3.00%
Pension Plan, Defined Benefit | U.S. companies (a)
Plan assets, actual allocation
Total assets - at fair value	[3]	$ 76.5	72.2
Pension Plan, Defined Benefit | International companies (b)
Plan assets, actual allocation
Total assets - at fair value	[4]	11.4	11.5
Pension Plan, Defined Benefit | Mutual Funds (a)
Plan assets, actual allocation
Total assets - at fair value	[3]	71.3	61.9
Pension Plan, Defined Benefit | Government and agency bonds (c)
Plan assets, actual allocation
Total assets - at fair value	[5]	5.4	5.3
Pension Plan, Defined Benefit | Corporate bonds and notes (d)
Plan assets, actual allocation
Total assets - at fair value	[6]	4.5	6
Pension Plan, Defined Benefit | Money market funds (e)
Plan assets, actual allocation
Total assets - at fair value	[7]	$ 9.1	5.8
Pension Plan, Defined Benefit | Mid-cap equity funds [Member]
Plan assets, actual allocation
Total assets (as a percent)		7.00%
Pension Plan, Defined Benefit | Small-cap equity funds [Member]
Plan assets, actual allocation
Total assets (as a percent)		9.00%
Pension Plan, Defined Benefit | Global equity fund [Member]
Plan assets, actual allocation
Total assets (as a percent)		10.00%
Pension Plan, Defined Benefit | Quoted Prices for Identical Assets (Level 1)
Plan assets, actual allocation
Total assets - at fair value		$ 151.2	134.5
Pension Plan, Defined Benefit | Quoted Prices for Identical Assets (Level 1) | U.S. companies (a)
Plan assets, actual allocation
Total assets - at fair value	[3]	70.8	66.8
Pension Plan, Defined Benefit | Quoted Prices for Identical Assets (Level 1) | International companies (b)
Plan assets, actual allocation
Total assets - at fair value	[4]	0	0
Pension Plan, Defined Benefit | Quoted Prices for Identical Assets (Level 1) | Mutual Funds (a)
Plan assets, actual allocation
Total assets - at fair value	[3]	71.3	61.9
Pension Plan, Defined Benefit | Quoted Prices for Identical Assets (Level 1) | Government and agency bonds (c)
Plan assets, actual allocation
Total assets - at fair value	[5]	0	0
Pension Plan, Defined Benefit | Quoted Prices for Identical Assets (Level 1) | Corporate bonds and notes (d)
Plan assets, actual allocation
Total assets - at fair value	[6]	0	0
Pension Plan, Defined Benefit | Quoted Prices for Identical Assets (Level 1) | Money market funds (e)
Plan assets, actual allocation
Total assets - at fair value	[7]	9.1	5.8
Pension Plan, Defined Benefit | Significant Other Observable Inputs (Level 2)
Plan assets, actual allocation
Total assets - at fair value		27	28.2
Pension Plan, Defined Benefit | Significant Other Observable Inputs (Level 2) | U.S. companies (a)
Plan assets, actual allocation
Total assets - at fair value	[3]	5.7	5.4
Pension Plan, Defined Benefit | Significant Other Observable Inputs (Level 2) | International companies (b)
Plan assets, actual allocation
Total assets - at fair value	[4]	11.4	11.5
Pension Plan, Defined Benefit | Significant Other Observable Inputs (Level 2) | Mutual Funds (a)
Plan assets, actual allocation
Total assets - at fair value	[3]	0	0
Pension Plan, Defined Benefit | Significant Other Observable Inputs (Level 2) | Government and agency bonds (c)
Plan assets, actual allocation
Total assets - at fair value	[5]	5.4	5.3
Pension Plan, Defined Benefit | Significant Other Observable Inputs (Level 2) | Corporate bonds and notes (d)
Plan assets, actual allocation
Total assets - at fair value	[6]	4.5	6
Pension Plan, Defined Benefit | Significant Other Observable Inputs (Level 2) | Money market funds (e)
Plan assets, actual allocation
Total assets - at fair value	[7]	0	0
Pension Plan, Defined Benefit | Significant Unobservable Inputs (Level 3)
Plan assets, actual allocation
Total assets - at fair value		0	0
Pension Plan, Defined Benefit | Significant Unobservable Inputs (Level 3) | U.S. companies (a)
Plan assets, actual allocation
Total assets - at fair value	[3]	0	0
Pension Plan, Defined Benefit | Significant Unobservable Inputs (Level 3) | International companies (b)
Plan assets, actual allocation
Total assets - at fair value	[4]	0	0
Pension Plan, Defined Benefit | Significant Unobservable Inputs (Level 3) | Mutual Funds (a)
Plan assets, actual allocation
Total assets - at fair value	[3]	0	0
Pension Plan, Defined Benefit | Significant Unobservable Inputs (Level 3) | Government and agency bonds (c)
Plan assets, actual allocation
Total assets - at fair value	[5]	0	0
Pension Plan, Defined Benefit | Significant Unobservable Inputs (Level 3) | Corporate bonds and notes (d)
Plan assets, actual allocation
Total assets - at fair value	[6]	0	0
Pension Plan, Defined Benefit | Significant Unobservable Inputs (Level 3) | Money market funds (e)
Plan assets, actual allocation
Total assets - at fair value	[7]	$ 0	$ 0
Minimum
401(k) plans
Employer contribution		2.00%
Minimum | Pension Plan, Defined Benefit | Fixed Income Funds [Member]
Employee benefit plans
Defined Benefit Plan, Target Allocation Percentage		.3
Minimum | Pension Plan, Defined Benefit | Other Investments [Member]
Employee benefit plans
Defined Benefit Plan, Target Allocation Percentage		0
Minimum | Pension Plan, Defined Benefit | Large-cap Equity Funds [Member]
Employee benefit plans
Defined Benefit Plan, Target Allocation Percentage		.25
Minimum | Pension Plan, Defined Benefit | Mid-cap equity funds [Member]
Employee benefit plans
Defined Benefit Plan, Target Allocation Percentage		.05
Minimum | Pension Plan, Defined Benefit | Small-cap equity funds [Member]
Employee benefit plans
Defined Benefit Plan, Target Allocation Percentage		.05
Minimum | Pension Plan, Defined Benefit | Global equity fund [Member]
Employee benefit plans
Defined Benefit Plan, Target Allocation Percentage		.05
Maximum
401(k) plans
Employer contribution		6.00%
Maximum | Pension Plan, Defined Benefit | Fixed Income Funds [Member]
Employee benefit plans
Defined Benefit Plan, Target Allocation Percentage		.4
Maximum | Pension Plan, Defined Benefit | Other Investments [Member]
Employee benefit plans
Defined Benefit Plan, Target Allocation Percentage		.05
Maximum | Pension Plan, Defined Benefit | Large-cap Equity Funds [Member]
Employee benefit plans
Defined Benefit Plan, Target Allocation Percentage		.35
Maximum | Pension Plan, Defined Benefit | Mid-cap equity funds [Member]
Employee benefit plans
Defined Benefit Plan, Target Allocation Percentage		.15
Maximum | Pension Plan, Defined Benefit | Small-cap equity funds [Member]
Employee benefit plans
Defined Benefit Plan, Target Allocation Percentage		.15
Maximum | Pension Plan, Defined Benefit | Global equity fund [Member]
Employee benefit plans
Defined Benefit Plan, Target Allocation Percentage		.15
Non-Qualified
Estimated future benefit payment under company sponsored plans
2,018		$ 1.9
2,019		1.9
2,020		1.9
2,021		1.8
2,022		1.8
2023-2027		$ 9.7
[1]	Represents the maximum redemption period. A portion of the investment does not have any redemption period restrictions.
[2]	These investments consists of privately placed funds that are valued based on NAV. NAV of the funds is based on the fair value of each funds underlying investments. In accordance with ASC Subtopic 820-10, certain investments that are measured at fair value using the NAV per share (or its equivalent) practical expedient have not been classified in the fair value hierarchy
[3]	Primarily valued using a market approach based on the quoted market prices of identical instruments that are actively traded on public exchanges.
[4]	Valuation model looks at underlying security “best” price, exchange rate for underlying security's currency against the U.S. Dollar and ratio of underlying security to American depository receipt.
[5]	These investments consist of debt securities issued by the U.S. Treasury, U.S. government agencies and U.S. government-sponsored enterprises and have a variety of structures, coupon rates and maturities. These investments are considered to have low default risk as they are guaranteed by the U.S. government. Fixed income securities are primarily valued using a market approach with inputs that include broker quotes, benchmark yields, base spreads and reported trades.
[6]	These investments consist of debt obligations issued by a variety of private and public corporations. These are investment grade securities which historically have provided a steady stream of income. Fixed income securities are primarily valued using a market approach with inputs that include broker quotes, benchmark yields, base spreads and reported trades.
[7]	These investments largely consist of short-term investment funds and are valued using a market approach based on the quoted market prices of identical instruments.

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Pre-tax income (loss) from continuing operations
Domestic	$ 392.7	$ 277.1	$ 316.4
Foreign	18.6	29.9	9.7
Income before income taxes and equity in earnings of unconsolidated affiliates	411.3	307	326.1
Current:
Federal	104.9	103.6	108.8
Foreign	13.5	3.2	1.5
State	1	2.6	1.1
Total current	119.4	109.4	111.4
Deferred:
Federal	6.6	(18.5)	(10.8)
Foreign	4.2	2	(1.3)
State	(3)	(0.5)	(0.1)
Total deferred	7.8	(17)	(12.2)
Provision for income taxes	127.2	92.4	99.2
Allocated to Other Comprehensive Income (Loss)
Deferred federal, state and foreign	$ 15.1	$ (14.2)	$ (1.2)
Effective Rate Reconciliation
U.S. federal tax rate	35.00%	35.00%	35.00%
State income taxes, net	1.30%	1.30%	2.50%
Foreign taxes	0.60%	(1.70%)	(2.40%)
Tax audit settlements	0.00%	0.10%	(2.60%)
Valuation allowance	0.50%	(0.60%)	0.40%
Domestic tax credits	(4.20%)	(1.50%)	(1.30%)
Manufacturing deduction	(2.80%)	(3.00%)	(2.80%)
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Compensation Cost, Percent	(1.30%)	(0.00%)	(0.00%)
Other, net	1.80%	0.50%	1.60%
Effective income tax rate	30.90%	30.10%	30.40%
Deferred tax assets:
Other long-term liabilities	$ 81	$ 109.9
Losses and credits	31.2	36.4
Accrued warranty	31.8	27
Other current liabilities	24.5	31.1
Payroll-related obligations	34.9	28.2
Receivables	7	6.3
Other	12.4	(0.8)
Gross deferred tax assets	222.8	238.1
Less valuation allowance	(10.4)	(8.6)
Deferred tax assets	212.4	229.5
Deferred tax liabilities:
Intangible assets	154.8	167
Property, plant and equipment	52.4	47.4
Inventories	17.6	15.5
Other	3.6	2.5
Deferred tax liabilities	228.4	232.4
Classification of deferred tax liability in consolidated balance sheets
Deferred Tax Assets, Net, Noncurrent	4.2	8.4
Non-current net deferred tax liability	(20.2)	(11.3)
Deferred Tax Liabilites, Net	$ (16)	$ (2.9)

Income Taxes - Additional infor

Income Taxes - Additional information regarding Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Operating Loss Carryforwards [Line Items]
Deferred Tax Assets, Valuation Allowance	$ 10.4	$ 8.6
Foreign Earnings Reinvested, Income taxes on Undistributed Earnings	184.4
Discrete tax benefits	$ 20.1	$ 7.5	$ 13.8
Income Tax Expense (Benefit), Discrete Items, Percentage of Pre-Tax Income	4.90%	2.40%	4.20%
Foreign Tax Authority [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	$ 50.4
Tax Credit Carryforwards, Foreign Expiration Period, Minimum	8 years
Deferred Tax Assets, Operating Loss Carryforwards	$ 15
Operating Loss Carryforwards, Valuation Allowance	8.3
State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	227.8
Tax Credit Carryforward, Amount	16.1
Deferred Tax Assets, Tax Credit Carryforwards	8.6
Deferred Tax Assets, Operating Loss Carryforwards	7.6
Operating Loss Carryforwards, Valuation Allowance	$ 2.1

Income Taxes - Other Additional

Income Taxes - Other Additional Disclosures (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Reconciliation of the beginning and ending amount of unrecognized tax benefits
Balance at beginning of year	$ 37.4	$ 27	$ 33.5
Additions for tax positions related to current year	1.2	7.6	4.6
Additions for tax positions related to prior years	6	8.4	2.1
Reductions for tax positions of prior years	(5.5)	(1.1)	0
Settlements	0	(3)	(8.6)
Lapse of statute of limitations	(1.9)	(1.5)	(4.5)
Unrecognized Tax Benefits, Decrease Resulting from Foreign Currency Translation	0	0	(0.1)
Balance at end of year	37.2	37.4	27
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit	7
Net unrecognized tax benefits, excluding interest and penalties that would affect the Company's net income if recognized	18.5
Accruals for payment of interest and penalties	9.8	10
Interest and penalties	$ (0.4)	$ (1.2)	$ (3)

Accumulated Other Comprehensi82

Accumulated Other Comprehensive Income (Loss) Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated Other Comprehensive Income (Loss), Beginning of Year	$ (175)	$ (144.4)	$ (69.2)
Other comprehensive income (loss) before reclassifications	46	(32.7)	(76.5)
Amounts reclassified from accumulated other comprehensive income (loss)	4	2.1	1.3
Total other comprehensive income (loss), net of tax	50	(30.6)	(75.2)
Accumulated Other Comprehensive Income (Loss), End of Year	(125)	(175)	(144.4)
Employee Pension and Postretirement Benefits, Net of Tax
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated Other Comprehensive Income (Loss), Beginning of Year	(73.9)	(46.4)	(44.2)
Other comprehensive income (loss) before reclassifications	23.7	(29.5)	(3.7)
Amounts reclassified from accumulated other comprehensive income (loss)	4	2	1.5
Total other comprehensive income (loss), net of tax	27.7	(27.5)	(2.2)
Accumulated Other Comprehensive Income (Loss), End of Year	(46.2)	(73.9)	(46.4)
Cumulative Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated Other Comprehensive Income (Loss), Beginning of Year	(101.1)	(98.1)	(25)
Other comprehensive income (loss) before reclassifications	22.5	(3)	(73.1)
Amounts reclassified from accumulated other comprehensive income (loss)	0	0	0
Total other comprehensive income (loss), net of tax	22.5	(3)	(73.1)
Accumulated Other Comprehensive Income (Loss), End of Year	(78.6)	(101.1)	(98.1)
Derivatives Instruments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated Other Comprehensive Income (Loss), Beginning of Year	0	0.1	0
Other comprehensive income (loss) before reclassifications	(0.2)	(0.2)	0.3
Amounts reclassified from accumulated other comprehensive income (loss)	0	0.1	(0.2)
Total other comprehensive income (loss), net of tax	(0.2)	(0.1)	0.1
Accumulated Other Comprehensive Income (Loss), End of Year	$ (0.2)	$ 0	$ 0.1

Accumulated Other Comprehensi83

Accumulated Other Comprehensive Income (Loss) Reclassification out of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended													12 Months Ended
	Sep. 30, 2017	[1]	Jun. 30, 2017	[2]	Mar. 31, 2017	[3]	Dec. 31, 2016	[4]	Sep. 30, 2016	[5]	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Amortization of employee pension and postretirement benefits items
Income before income taxes and equity in earnings of unconsolidated affiliates														$ 411.3	$ 307	$ 326.1
Tax benefit														(127.2)	(92.4)	(99.2)
Net income	$ 93.5		$ 128.6		$ 44.3		$ 19.2		$ 61.5		$ 84.2	$ 56.1	$ 14.6	285.6	216.4	229.5
Employee Pension and Postretirement Benefits, Net of Tax | Reclassification out of Accumulated Other Comprehensive Income
Amortization of employee pension and postretirement benefits items
Amortization of prior service benefit (cost)														(0.9)	(0.9)	(0.8)
Actuarial losses														(4.7)	(2.2)	(2.7)
Curtailment/settlement														(0.5)	0	1.2
Income before income taxes and equity in earnings of unconsolidated affiliates														(6.1)	(3.1)	(2.3)
Tax benefit														2.1	1.1	0.8
Net income														$ (4)	$ (2)	$ (1.5)
[1]	The fourth quarter of fiscal 2017 was impacted by restructuring-related charges of $15.8 million ($11.5 million after-tax) in the access equipment segment.
[2]	The third quarter of fiscal 2017 was impacted by restructuring-related charges of $11.1 million ($11.5 million after-tax) in the access equipment segment.
[3]	The second quarter of fiscal 2017 was impacted by restructuring-related charges of $17.6 million ($14.0 million after-tax) in the access equipment segment.
[4]	The first quarter of fiscal 2017 was impacted by restructuring-related charges of $0.7 million ($0.4 million after-tax) in the access equipment segment.
[5]	The fourth quarter of fiscal 2016 was impacted by a combined $27.8 million ($17.5 million after-tax) asset impairment and workforce reduction charge in the access equipment segment.

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ in Millions	3 Months Ended													12 Months Ended
	Sep. 30, 2017	[1]	Jun. 30, 2017	[2]	Mar. 31, 2017	[3]	Dec. 31, 2016	[4]	Sep. 30, 2016	[5]	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Amount attributable to Oshkosh Corporation common shareholders:
Net income	$ 93.5		$ 128.6		$ 44.3		$ 19.2		$ 61.5		$ 84.2	$ 56.1	$ 14.6	$ 285.6	$ 216.4	$ 229.5
Undistributed Earnings (Loss) Allocated to Participating Securities, Basic														0	0	(0.5)
Earnings available to common shareholders														$ 285.6	$ 216.4	$ 229
Weighted-average common shares outstanding (in shares)														74,674,115	73,570,020	77,990,432
Dilutive stock options and other equity-based compensation awards (in shares)														1,115,930	862,898	1,101,303
Participating stock awards (in shares)														0	0	(110,317)
Diluted weighted-average common shares outstanding (in shares)														75,790,045	74,432,918	78,981,418
[1]	The fourth quarter of fiscal 2017 was impacted by restructuring-related charges of $15.8 million ($11.5 million after-tax) in the access equipment segment.
[2]	The third quarter of fiscal 2017 was impacted by restructuring-related charges of $11.1 million ($11.5 million after-tax) in the access equipment segment.
[3]	The second quarter of fiscal 2017 was impacted by restructuring-related charges of $17.6 million ($14.0 million after-tax) in the access equipment segment.
[4]	The first quarter of fiscal 2017 was impacted by restructuring-related charges of $0.7 million ($0.4 million after-tax) in the access equipment segment.
[5]	The fourth quarter of fiscal 2016 was impacted by a combined $27.8 million ($17.5 million after-tax) asset impairment and workforce reduction charge in the access equipment segment.

Earnings Per Share Antidilutive

Earnings Per Share Antidilutive Securities Excluded from Computation of Earnings Per Share (Details) - shares	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Stock Compensation Plan
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Stock options (in shares)	381,350	224,200	1,153,252

Contingencies, Significant Es86

Contingencies, Significant Estimates and Concentrations (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Loss contingencies
Approximate percentage of workforce covered under collective bargaining agreements (as a percent)	27.00%
Significant portion of revenue from DoD
DoD	$ 1,314.6	$ 1,205	$ 922.1
Foreign military sales	32.1	1.8	0.3
Total DoD sales	$ 1,346.7	$ 1,206.8	$ 922.4
Percentage of maximum sales not accounted for by single customer (as a percent)	10.00%	10.00%	10.00%
Personal Injury Actions and Other
Loss contingencies
Reserve for loss contingencies	$ 39.1	$ 38.3
Maximum self-insurance available per claim	5
Performance and specialty bonds
Loss contingencies
Commitments and contingencies	598.4	503.6
Standby letters of credit
Loss contingencies
Commitments and contingencies	$ 96.9	$ 110.8

Business Segment Information (D

Business Segment Information (Details) - segment	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Segment Reporting [Abstract]
Number of reportable segments of entity (in segments)	4	4
Net sales | Customer concentration | Defense | DoD
Business Segment Information
Percentage of sales accounted for by Department of Defense (as a percent)	70.60%		86.10%	91.90%

Business Segment Information 88

Business Segment Information (Details 2) - USD ($) $ in Millions		3 Months Ended													12 Months Ended
		Sep. 30, 2017		Jun. 30, 2017		Mar. 31, 2017		Dec. 31, 2016		Sep. 30, 2016		Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2017		Sep. 30, 2016		Sep. 30, 2015
Business Segment Information
Restructuring provision		$ 15.8		$ 11.1		$ 17.6		$ 0.7		$ 27.8					$ 35.8		$ 27.8
Net sales:
Net sales		1,963	[1]	2,036.9	[2]	1,618.3	[3]	1,211.4	[4]	1,755.4	[5]	$ 1,747.5	$ 1,524.3	$ 1,252	6,829.6		6,279.2		$ 6,098.1
Operating income (loss) from continuing operations:
Operating income (loss)		$ 134.5	[1]	$ 211.9	[2]	$ 80.4	[3]	$ 36.2	[4]	$ 95.5	[5]	$ 146.8	$ 91.4	$ 30.3	463		364		398.6
Interest expense net of interest income															(54.9)		(58.3)		(67.6)	[6]
Miscellaneous other income (expense)															3.2		1.3		(4.9)
Income before income taxes and equity in earnings of unconsolidated affiliates															411.3		307		326.1
Debt Related Commitment Fees and Debt Issuance Costs																			14.7
Depreciation and amortization															130.3		128.8		124.5
Capital expenditures															113.2		127.3		158
Write-off of deferred financing fees due to early extinguishment of related debt																			3.3
Access equipment
Business Segment Information
Restructuring provision															35.8		27.8
Net sales:
Net sales															3,026.4		3,012.4		3,400.6
Operating income (loss) from continuing operations:
Operating income (loss)															259.1	[7]	263.4	[7]	407
Depreciation and amortization															72.1		77		74.1
Capital expenditures	[8]														51.4		52.5		56.6
Access equipment | Aerial work platforms
Net sales:
Net sales															1,629.6		1,539.5		1,627
Access equipment | Telehandlers
Net sales:
Net sales															661.8		773.9		1,126.1
Access equipment | Other
Net sales:
Net sales															735		699		647.5
Defense
Net sales:
Net sales															1,818.6		1,349.3		931.8
Operating income (loss) from continuing operations:
Operating income (loss)															207.9		122.5		9.2
Depreciation and amortization															14.5		11.1		12.2
Capital expenditures															31.9		22.2		2.2
Fire & emergency
Net sales:
Net sales															1,015.4		941.5		791.5
Operating income (loss) from continuing operations:
Operating income (loss)															104.2		67		43.8
Depreciation and amortization															9.4		9.7		10.3
Capital expenditures															7.2		7.2		4.7
Commercial
Net sales:
Net sales															964.4		976		974.2
Operating income (loss) from continuing operations:
Operating income (loss)															43.8		67.6		64.5
Depreciation and amortization															12.7		12		11.2
Capital expenditures	[8]														10.9		10		11.5
Commercial | Concrete placement
Net sales:
Net sales															474		463.6		461
Commercial | Refuse collection
Net sales:
Net sales															391.1		409.1		385
Commercial | Other
Net sales:
Net sales															99.3		103.3		128.2
Corporate
Operating income (loss) from continuing operations:
Operating income (loss)															(152)		(156.5)		(126)
Intersegment eliminations
Net sales:
Net sales															4.8		0		0
Operating income (loss) from continuing operations:
Operating income (loss)															0		0		0.1
Depreciation and amortization															21.6		19		16.7	[9]
Capital expenditures	[10]														11.8		35.4		83
Operating Segments
Net sales:
Net sales															6,829.6		6,279.2		6,098.1
Operating Segments | Access equipment
Net sales:
Net sales															3,026.4		3,012.4		3,400.6
Operating Segments | Access equipment | Aerial work platforms
Net sales:
Net sales															1,629.6		1,539.5		1,627
Operating Segments | Access equipment | Telehandlers
Net sales:
Net sales															661.8		773.9		1,126.1
Operating Segments | Access equipment | Other
Net sales:
Net sales															735		699		647.5
Operating Segments | Defense
Net sales:
Net sales															1,820.1		1,351.1		939.8
Operating Segments | Fire & emergency
Net sales:
Net sales															1,030.9		953.3		815.1
Operating Segments | Commercial
Net sales:
Net sales															970.3		979.2		978
Operating Segments | Commercial | Concrete placement
Net sales:
Net sales															474		463.6		461
Operating Segments | Commercial | Refuse collection
Net sales:
Net sales															391.1		409.1		385
Operating Segments | Commercial | Other
Net sales:
Net sales															105.2		106.5		132
Operating Segments | Intersegment eliminations
Net sales:
Net sales															(18.1)		(16.8)		(35.4)
Intersegment eliminations
Net sales:
Net sales															0		0		0
Intersegment eliminations | Access equipment
Net sales:
Net sales															0		0		0
Intersegment eliminations | Access equipment | Aerial work platforms
Net sales:
Net sales															0		0		0
Intersegment eliminations | Access equipment | Telehandlers
Net sales:
Net sales															0		0		0
Intersegment eliminations | Access equipment | Other
Net sales:
Net sales															0		0		0
Intersegment eliminations | Defense
Net sales:
Net sales															1.5		1.8		8
Intersegment eliminations | Fire & emergency
Net sales:
Net sales															15.5		11.8		23.6
Intersegment eliminations | Commercial
Net sales:
Net sales															5.9		3.2		3.8
Intersegment eliminations | Commercial | Concrete placement
Net sales:
Net sales															0		0		0
Intersegment eliminations | Commercial | Refuse collection
Net sales:
Net sales															0		0		0
Intersegment eliminations | Commercial | Other
Net sales:
Net sales															5.9		3.2		3.8
Intersegment eliminations | Intersegment eliminations
Net sales:
Net sales															(22.9)		(16.8)		$ (35.4)
Other Restructuring Costs
Business Segment Information
Restructuring provision															4.2		0
Employee Severance and Termination Benefits
Business Segment Information
Restructuring provision															27.3		0.9
Employee Severance and Termination Benefits | Cost of Sales [Member] | Access equipment
Business Segment Information
Restructuring provision															$ 35.8		$ 0.9
[1]	The fourth quarter of fiscal 2017 was impacted by restructuring-related charges of $15.8 million ($11.5 million after-tax) in the access equipment segment.
[2]	The third quarter of fiscal 2017 was impacted by restructuring-related charges of $11.1 million ($11.5 million after-tax) in the access equipment segment.
[3]	The second quarter of fiscal 2017 was impacted by restructuring-related charges of $17.6 million ($14.0 million after-tax) in the access equipment segment.
[4]	The first quarter of fiscal 2017 was impacted by restructuring-related charges of $0.7 million ($0.4 million after-tax) in the access equipment segment.
[5]	The fourth quarter of fiscal 2016 was impacted by a combined $27.8 million ($17.5 million after-tax) asset impairment and workforce reduction charge in the access equipment segment.
[6]	Fiscal 2015 results include $14.7 million in debt extinguishment costs.
[7]	Fiscal 2017 results include $35.8 million of restructuring costs and $9.4 million of operating expenses related to restructuring plans. Fiscal 2016 results include a $26.9 million asset impairment charge and a $0.9 million workforce reduction charge.
[8]	Capital expenditures include both the purchase of property, plant and equipment and equipment held for rental.
[9]	Includes $3.3 million in fiscal 2015 related to the write-off of deferred financing fees due to the early extinguishment of the related debt.
[10]	Fiscal 2016 and 2015 include capital expenditures for an enterprise-wide information system and the corporate-led shared manufacturing facility in Mexico that supports multiple operating segments.

Business Segment Information 89

Business Segment Information (Details 3) - USD ($) $ in Millions		3 Months Ended													12 Months Ended
		Sep. 30, 2017		Jun. 30, 2017	[2]	Mar. 31, 2017	[3]	Dec. 31, 2016	[4]	Sep. 30, 2016		Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Revenue and assets by geography
Identifiable assets		$ 5,098.9								$ 4,513.8					$ 5,098.9	$ 4,513.8
Net sales		1,963	[1]	$ 2,036.9		$ 1,618.3		$ 1,211.4		1,755.4	[5]	$ 1,747.5	$ 1,524.3	$ 1,252	6,829.6	6,279.2	$ 6,098.1
U.S.
Revenue and assets by geography
Net sales															5,094.8	4,756.6	4,789.3
Other North America
Revenue and assets by geography
Net sales															191.6	219.5	302.8
Europe, Africa and Middle East
Revenue and assets by geography
Net sales															1,146.9	905.5	564.4
Rest of the world
Revenue and assets by geography
Net sales															396.3	397.6	441.6
Access equipment
Revenue and assets by geography
Identifiable assets		2,692.6								2,571.2					2,692.6	2,571.2
Net sales															3,026.4	3,012.4	3,400.6
Access equipment | U.S.
Revenue and assets by geography
Identifiable assets		1,905.5								1,856					1,905.5	1,856
Access equipment | Europe
Revenue and assets by geography
Identifiable assets		541								521.5					541	521.5
Access equipment | Rest of the world
Revenue and assets by geography
Identifiable assets		246.1								193.7					246.1	193.7
Defense
Revenue and assets by geography
Identifiable assets		782.1								525.2					782.1	525.2
Net sales															1,818.6	1,349.3	931.8
Defense | U.S.
Revenue and assets by geography
Identifiable assets		775.1								522.2					775.1	522.2
Defense | Rest of the world
Revenue and assets by geography
Identifiable assets		7								3					7	3
Fire & emergency
Revenue and assets by geography
Net sales															1,015.4	941.5	791.5
Fire & emergency | U.S.
Revenue and assets by geography
Identifiable assets		552.6								522.7					552.6	522.7
Commercial [Member]
Revenue and assets by geography
Identifiable assets		419.6								391.8					419.6	391.8
Net sales															964.4	976	$ 974.2
Commercial [Member] | U.S.
Revenue and assets by geography
Identifiable assets		377.3								358.4					377.3	358.4
Commercial [Member] | Rest of the world
Revenue and assets by geography
Identifiable assets		42.3								33.4					42.3	33.4
Corporate
Revenue and assets by geography
Identifiable assets		652								502.9					652	502.9
Corporate | U.S.
Revenue and assets by geography
Identifiable assets	[6]	543.9								408.3					543.9	408.3
Corporate | Rest of the world
Revenue and assets by geography
Identifiable assets	[7]	$ 108.1								$ 94.6					$ 108.1	$ 94.6
[1]	The fourth quarter of fiscal 2017 was impacted by restructuring-related charges of $15.8 million ($11.5 million after-tax) in the access equipment segment.
[2]	The third quarter of fiscal 2017 was impacted by restructuring-related charges of $11.1 million ($11.5 million after-tax) in the access equipment segment.
[3]	The second quarter of fiscal 2017 was impacted by restructuring-related charges of $17.6 million ($14.0 million after-tax) in the access equipment segment.
[4]	The first quarter of fiscal 2017 was impacted by restructuring-related charges of $0.7 million ($0.4 million after-tax) in the access equipment segment.
[5]	The fourth quarter of fiscal 2016 was impacted by a combined $27.8 million ($17.5 million after-tax) asset impairment and workforce reduction charge in the access equipment segment.
[6]	Primarily includes cash and short-term investments.
[7]	Primarily includes the corporate-led shared manufacturing facility in Mexico that supports multiple operating segments.

Separate Financial Informatio90

Separate Financial Information of Subsidiary Guarantors of Indebtedness (Details) - USD ($) $ in Millions	3 Months Ended													12 Months Ended
	Sep. 30, 2017	[1]	Jun. 30, 2017	[2]	Mar. 31, 2017	[3]	Dec. 31, 2016	[4]	Sep. 30, 2016	[5]	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Condensed financial statements, captions
Proceeds from issuance of debt (original maturities greater than three months)														$ 5.9	$ 323.5	$ 375
Dividends paid														(62.8)	(55.9)	(53.1)
Proceeds from exercise of stock options														39.9	21.7	8.6
Excess tax benefit from stock-based compensation														0	2	4
Condensed Consolidating Statements of Income and Comprehensive Income
Net sales	$ 1,963		$ 2,036.9		$ 1,618.3		$ 1,211.4		$ 1,755.4		$ 1,747.5	$ 1,524.3	$ 1,252	6,829.6	6,279.2	6,098.1
Cost of sales														5,655.2	5,223.4	5,058.9
Gross income	326.5		386.9		261.3		199.7		299.1		314.6	259.3	182.8	1,174.4	1,055.8	1,039.2
Selling, general and administrative expenses														665.6	612.4	587.4
Amortization of purchased intangibles														45.8	52.5	53.2
Asset impairment charge														0	26.9	0
Operating income	134.5		211.9		80.4		36.2		95.5		146.8	91.4	30.3	463	364	398.6
Interest expense														(59.8)	(60.4)	(70.1)
Interest income														4.9	2.1	2.5
Miscellaneous, net														3.2	1.3	(4.9)
Income before income taxes and equity in earnings of unconsolidated affiliates														411.3	307	326.1
Provision for (benefit from) income taxes														127.2	92.4	99.2
Income before equity in earnings of unconsolidated affiliates														284.1	214.6	226.9
Equity in earnings of consolidated subsidiaries														0	0	0
Equity in earnings of unconsolidated affiliates														1.5	1.8	2.6
Net income	$ 93.5		$ 128.6		$ 44.3		$ 19.2		$ 61.5		$ 84.2	$ 56.1	$ 14.6	285.6	216.4	229.5
Total other comprehensive income (loss), net of tax														50	(30.6)	(75.2)
Comprehensive income														335.6	185.8	154.3
Repayments of Debt, Maturing in More than Three Months														(23)	(373.5)	(365)
Oshkosh Corporation
Condensed financial statements, captions
Proceeds from issuance of debt (original maturities greater than three months)														0	320	375
Dividends paid														(62.8)	(55.9)	(53.1)
Proceeds from exercise of stock options														39.9	21.7	8.6
Excess tax benefit from stock-based compensation															2	4
Condensed Consolidating Statements of Income and Comprehensive Income
Net sales														0	0	0
Cost of sales														1.9	2.6	0.4
Gross income														(1.9)	(2.6)	(0.4)
Selling, general and administrative expenses														136.5	121.8	101.8
Amortization of purchased intangibles														0	0	0
Asset impairment charge															0
Operating income														(138.4)	(124.4)	(102.2)
Interest expense														(56.9)	(277.6)	(256.2)
Interest income														3.4	1.7	1.6
Miscellaneous, net														91.7	60.8	25.7
Income before income taxes and equity in earnings of unconsolidated affiliates														(100.2)	(339.5)	(331.1)
Provision for (benefit from) income taxes														(29.3)	(108.8)	(106.4)
Income before equity in earnings of unconsolidated affiliates														(70.9)	(230.7)	(224.7)
Equity in earnings of consolidated subsidiaries														356.5	447.4	454.4
Equity in earnings of unconsolidated affiliates														0	(0.3)	(0.2)
Net income														285.6	216.4	229.5
Total other comprehensive income (loss), net of tax														50	(30.6)	(75.2)
Comprehensive income														335.6	185.8	154.3
Repayments of Debt, Maturing in More than Three Months														(20)	(370)	(365)
Guarantor Subsidiaries
Condensed financial statements, captions
Proceeds from issuance of debt (original maturities greater than three months)														0	0	0
Dividends paid														0	0	0
Proceeds from exercise of stock options														0	0	0
Excess tax benefit from stock-based compensation															0	0
Condensed Consolidating Statements of Income and Comprehensive Income
Net sales														5,837.5	5,289.7	5,127.7
Cost of sales														4,838	4,410.7	4,321.7
Gross income														999.5	879	806
Selling, general and administrative expenses														424.2	390.7	390.9
Amortization of purchased intangibles														38.4	38.6	39.2
Asset impairment charge															26.9
Operating income														536.9	422.8	375.9
Interest expense														(54.4)	(63.3)	(53.8)
Interest income														18.1	89.5	67.4
Miscellaneous, net														(179.6)	(208.3)	(129.9)
Income before income taxes and equity in earnings of unconsolidated affiliates														321	240.7	259.6
Provision for (benefit from) income taxes														93.7	75.4	83.4
Income before equity in earnings of unconsolidated affiliates														227.3	165.3	176.2
Equity in earnings of consolidated subsidiaries														81.7	101.5	129.2
Equity in earnings of unconsolidated affiliates														0	0	0
Net income														309	266.8	305.4
Total other comprehensive income (loss), net of tax														18.1	(18.3)	(4.3)
Comprehensive income														327.1	248.5	301.1
Repayments of Debt, Maturing in More than Three Months														0	0	0
Non-Guarantor Subsidiaries
Condensed financial statements, captions
Proceeds from issuance of debt (original maturities greater than three months)														5.9	3.5	0
Dividends paid														0	0	0
Proceeds from exercise of stock options														0	0	0
Excess tax benefit from stock-based compensation															0	0
Condensed Consolidating Statements of Income and Comprehensive Income
Net sales														1,181.7	1,119.4	1,050.6
Cost of sales														1,004.4	940.1	816.7
Gross income														177.3	179.3	233.9
Selling, general and administrative expenses														104.9	99.9	94.7
Amortization of purchased intangibles														7.4	13.9	14
Asset impairment charge															0
Operating income														65	65.5	125.2
Interest expense														(2.2)	(2.1)	(1.3)
Interest income														37.1	193.5	174.7
Miscellaneous, net														91.1	148.8	99.3
Income before income taxes and equity in earnings of unconsolidated affiliates														191	405.7	397.9
Provision for (benefit from) income taxes														63	125.8	122.3
Income before equity in earnings of unconsolidated affiliates														128	279.9	275.6
Equity in earnings of consolidated subsidiaries														42.5	77.9	149.7
Equity in earnings of unconsolidated affiliates														1.5	2.1	2.8
Net income														172	359.9	428.1
Total other comprehensive income (loss), net of tax														22.5	(6.2)	(67.7)
Comprehensive income														194.5	353.7	360.4
Repayments of Debt, Maturing in More than Three Months														(3)	(3.5)	0
Eliminations
Condensed financial statements, captions
Proceeds from issuance of debt (original maturities greater than three months)														0	0	0
Dividends paid														0	0	0
Proceeds from exercise of stock options														0	0	0
Excess tax benefit from stock-based compensation															0	0
Condensed Consolidating Statements of Income and Comprehensive Income
Net sales														(189.6)	(129.9)	(80.2)
Cost of sales														(189.1)	(130)	(79.9)
Gross income														(0.5)	0.1	(0.3)
Selling, general and administrative expenses														0	0	0
Amortization of purchased intangibles														0	0	0
Asset impairment charge															0
Operating income														(0.5)	0.1	(0.3)
Interest expense														53.7	282.6	241.2
Interest income														(53.7)	(282.6)	(241.2)
Miscellaneous, net														0	0	0
Income before income taxes and equity in earnings of unconsolidated affiliates														(0.5)	0.1	(0.3)
Provision for (benefit from) income taxes														(0.2)	0	(0.1)
Income before equity in earnings of unconsolidated affiliates														(0.3)	0.1	(0.2)
Equity in earnings of consolidated subsidiaries														(480.7)	(626.8)	(733.3)
Equity in earnings of unconsolidated affiliates														0	0	0
Net income														(481)	(626.7)	(733.5)
Total other comprehensive income (loss), net of tax														(40.6)	24.5	72
Comprehensive income														(521.6)	(602.2)	(661.5)
Repayments of Debt, Maturing in More than Three Months														$ 0	$ 0	$ 0
[1]	The fourth quarter of fiscal 2017 was impacted by restructuring-related charges of $15.8 million ($11.5 million after-tax) in the access equipment segment.
[2]	The third quarter of fiscal 2017 was impacted by restructuring-related charges of $11.1 million ($11.5 million after-tax) in the access equipment segment.
[3]	The second quarter of fiscal 2017 was impacted by restructuring-related charges of $17.6 million ($14.0 million after-tax) in the access equipment segment.
[4]	The first quarter of fiscal 2017 was impacted by restructuring-related charges of $0.7 million ($0.4 million after-tax) in the access equipment segment.
[5]	The fourth quarter of fiscal 2016 was impacted by a combined $27.8 million ($17.5 million after-tax) asset impairment and workforce reduction charge in the access equipment segment.

Separate Financial Informatio91

Separate Financial Information of Subsidiary Guarantors of Indebtedness (Details 2) - USD ($) $ in Millions	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Current assets:
Cash and cash equivalents	$ 447	$ 321.9	$ 42.9	$ 313.8
Receivables, net	1,306.3	1,021.9
Inventories, net	1,198.4	979.8
Other current assets	88.1	93.9
Total current assets	3,039.8	2,417.5
Investment in and advances to consolidated subsidiaries	0	0
Intercompany receivables	0	0
Intangible assets, net	1,520.8	1,557
Other long-term assets	538.3	539.3
Total assets	5,098.9	4,513.8
Current liabilities:
Accounts payable	651	466.1
Customer advances	513.4	471.8
Other current liabilities	518.7	429.7
Total current liabilities	1,683.1	1,367.6
Long-term debt, less current maturities	807.9	826.2
Intercompany payables	0	0
Other long-term liabilities	300.5	343.5
Shareholders' equity:
Total shareholders’ equity	2,307.4	1,976.5
Total liabilities and shareholders' equity	5,098.9	4,513.8
Oshkosh Corporation
Current assets:
Cash and cash equivalents	399.5	285.4	14.8	281.8
Receivables, net	28.3	13
Inventories, net	0	0
Other current assets	45.4	28
Total current assets	473.2	326.4
Investment in and advances to consolidated subsidiaries	3,138.3	6,148.2
Intercompany receivables	48	48
Intangible assets, net	0	0
Other long-term assets	69.1	87.3
Total assets	3,728.6	6,609.9
Current liabilities:
Accounts payable	11.6	13.3
Customer advances	0	0
Other current liabilities	105.2	85.5
Total current liabilities	116.8	98.8
Long-term debt, less current maturities	807.9	826.2
Intercompany payables	452.9	3,639.4
Other long-term liabilities	43.6	69
Shareholders' equity:
Total shareholders’ equity	2,307.4	1,976.5
Total liabilities and shareholders' equity	3,728.6	6,609.9
Guarantor Subsidiaries
Current assets:
Cash and cash equivalents	4.6	1.7	6.3	4.7
Receivables, net	1,025.5	734.3
Inventories, net	819.3	679.1
Other current assets	31.9	58.5
Total current assets	1,881.3	1,473.6
Investment in and advances to consolidated subsidiaries	1,340.4	1,253.6
Intercompany receivables	261.6	1,353.7
Intangible assets, net	909.5	947.5
Other long-term assets	242.9	232.7
Total assets	4,635.7	5,261.1
Current liabilities:
Accounts payable	517.2	375
Customer advances	510.7	465.8
Other current liabilities	304.9	246.5
Total current liabilities	1,332.8	1,087.3
Long-term debt, less current maturities	0	0
Intercompany payables	1,780.5	2,346.5
Other long-term liabilities	134.1	147.9
Shareholders' equity:
Total shareholders’ equity	1,388.3	1,679.4
Total liabilities and shareholders' equity	4,635.7	5,261.1
Non-Guarantor Subsidiaries
Current assets:
Cash and cash equivalents	42.9	34.8	21.8	27.3
Receivables, net	316.1	319.6
Inventories, net	379.1	300.7
Other current assets	10.8	7.4
Total current assets	748.9	662.5
Investment in and advances to consolidated subsidiaries	(59.6)	(120)
Intercompany receivables	1,971.8	4,632.2
Intangible assets, net	611.3	609.5
Other long-term assets	226.3	219.3
Total assets	3,498.7	6,003.5
Current liabilities:
Accounts payable	176.4	122.6
Customer advances	2.7	6
Other current liabilities	118	97.9
Total current liabilities	297.1	226.5
Long-term debt, less current maturities	0	0
Intercompany payables	48	48
Other long-term liabilities	122.8	126.6
Shareholders' equity:
Total shareholders’ equity	3,030.8	5,602.4
Total liabilities and shareholders' equity	3,498.7	6,003.5
Eliminations
Current assets:
Cash and cash equivalents	0	0	$ 0	$ 0
Receivables, net	(63.6)	(45)
Inventories, net	0	0
Other current assets	0	0
Total current assets	(63.6)	(45)
Investment in and advances to consolidated subsidiaries	(4,419.1)	(7,281.8)
Intercompany receivables	(2,281.4)	(6,033.9)
Intangible assets, net	0	0
Other long-term assets	0	0
Total assets	(6,764.1)	(13,360.7)
Current liabilities:
Accounts payable	(54.2)	(44.8)
Customer advances	0	0
Other current liabilities	(9.4)	(0.2)
Total current liabilities	(63.6)	(45)
Long-term debt, less current maturities	0	0
Intercompany payables	(2,281.4)	(6,033.9)
Other long-term liabilities	0	0
Shareholders' equity:
Total shareholders’ equity	(4,419.1)	(7,281.8)
Total liabilities and shareholders' equity	$ (6,764.1)	$ (13,360.7)

Separate Financial Informatio92

Separate Financial Information of Subsidiary Guarantors of Indebtedness (Details 3) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Condensed Consolidating Statement of Cash Flows
Net cash provided by operating activities	$ 246.5	$ 583.9	$ 91.4
Investing activities:
Additions to property, plant and equipment	(85.8)	(92.5)	(131.7)
Additions to equipment held for rental	(27.4)	(34.8)	(26.3)
Acquisition of a business, net of cash acquired	0	0	(10)
Proceeds from sale of equipment held for rental	49.5	40.2	26.8
Intercompany investing	0	0	0
Other investing activities	(1.5)	(2.1)	1.1
Net cash used by investing activities	(65.2)	(89.2)	(140.1)
Financing activities:
Repayment of debt (original maturities greater than three months)	(23)	(373.5)	(365)
Proceeds from issuance of debt (original maturities greater than three months)	5.9	323.5	375
Repayments of debt (original maturities greater than three months)		(33.5)	33.5
Repurchases of Common Stock	(4.8)	(106.3)	(209.3)
Debt issuance costs	0	0	(15.5)
Proceeds from exercise of stock options	39.9	21.7	8.6
Dividends paid	(62.8)	(55.9)	(53.1)
Excess tax benefit from stock-based compensation	0	2	4
Intercompany financing	0	0	0
Net cash used by financing activities	(44.8)	(222)	(221.8)
Effect of exchange rate changes on cash	(11.4)	6.3	(0.4)
Increase (decrease) in cash and cash equivalents	125.1	279	(270.9)
Cash and cash equivalents at beginning of year	321.9	42.9	313.8
Cash and cash equivalents at end of year	447	321.9	42.9
Oshkosh Corporation
Condensed Consolidating Statement of Cash Flows
Net cash provided by operating activities	(49.5)	(211.3)	(169.9)
Investing activities:
Additions to property, plant and equipment	(7.4)	(22.4)	(29.3)
Additions to equipment held for rental	0	0	0
Acquisition of a business, net of cash acquired			0
Proceeds from sale of equipment held for rental	0	0	0
Intercompany investing	0	(0.7)	(30.7)
Other investing activities	(2)	(2)	0.7
Net cash used by investing activities	(9.4)	(25.1)	(59.3)
Financing activities:
Repayment of debt (original maturities greater than three months)	(20)	(370)	(365)
Proceeds from issuance of debt (original maturities greater than three months)	0	320	375
Repayments of debt (original maturities greater than three months)		(33.5)	33.5
Repurchases of Common Stock	(4.8)	(106.3)	(209.3)
Debt issuance costs			(15.5)
Proceeds from exercise of stock options	39.9	21.7	8.6
Dividends paid	(62.8)	(55.9)	(53.1)
Excess tax benefit from stock-based compensation		2	4
Intercompany financing	220.7	729	184
Net cash used by financing activities	173	507	(37.8)
Effect of exchange rate changes on cash	0	0	0
Increase (decrease) in cash and cash equivalents	114.1	270.6	(267)
Cash and cash equivalents at beginning of year	285.4	14.8	281.8
Cash and cash equivalents at end of year	399.5	285.4	14.8
Guarantor Subsidiaries
Condensed Consolidating Statement of Cash Flows
Net cash provided by operating activities	153.9	466.7	58.5
Investing activities:
Additions to property, plant and equipment	(53.2)	(40.4)	(27.9)
Additions to equipment held for rental	0	0	0
Acquisition of a business, net of cash acquired			0
Proceeds from sale of equipment held for rental	0	0.6	0
Intercompany investing	467.5	(405.8)	(2.8)
Other investing activities	0.5	(0.1)	0.9
Net cash used by investing activities	414.8	(445.7)	(29.8)
Financing activities:
Repayment of debt (original maturities greater than three months)	0	0	0
Proceeds from issuance of debt (original maturities greater than three months)	0	0	0
Repayments of debt (original maturities greater than three months)		0	0
Repurchases of Common Stock	0	0	0
Debt issuance costs			0
Proceeds from exercise of stock options	0	0	0
Dividends paid	0	0	0
Excess tax benefit from stock-based compensation		0	0
Intercompany financing	(566)	(26)	(26)
Net cash used by financing activities	(566)	(26)	(26)
Effect of exchange rate changes on cash	0.2	0.4	(1.1)
Increase (decrease) in cash and cash equivalents	2.9	(4.6)	1.6
Cash and cash equivalents at beginning of year	1.7	6.3	4.7
Cash and cash equivalents at end of year	4.6	1.7	6.3
Non-Guarantor Subsidiaries
Condensed Consolidating Statement of Cash Flows
Net cash provided by operating activities	142.1	328.5	202.8
Investing activities:
Additions to property, plant and equipment	(25.2)	(29.7)	(74.5)
Additions to equipment held for rental	(27.4)	(34.8)	(26.3)
Acquisition of a business, net of cash acquired			(10)
Proceeds from sale of equipment held for rental	49.5	39.6	26.8
Intercompany investing	(122.2)	(297.2)	(154.2)
Other investing activities	0	0	(0.5)
Net cash used by investing activities	(125.3)	(322.1)	(238.7)
Financing activities:
Repayment of debt (original maturities greater than three months)	(3)	(3.5)	0
Proceeds from issuance of debt (original maturities greater than three months)	5.9	3.5	0
Repayments of debt (original maturities greater than three months)		0	0
Repurchases of Common Stock	0	0	0
Debt issuance costs			0
Proceeds from exercise of stock options	0	0	0
Dividends paid	0	0	0
Excess tax benefit from stock-based compensation		0	0
Intercompany financing	0	0.7	29.7
Net cash used by financing activities	2.9	0.7	29.7
Effect of exchange rate changes on cash	(11.6)	5.9	0.7
Increase (decrease) in cash and cash equivalents	8.1	13	(5.5)
Cash and cash equivalents at beginning of year	34.8	21.8	27.3
Cash and cash equivalents at end of year	42.9	34.8	21.8
Eliminations
Condensed Consolidating Statement of Cash Flows
Net cash provided by operating activities	0	0	0
Investing activities:
Additions to property, plant and equipment	0	0	0
Additions to equipment held for rental	0	0	0
Acquisition of a business, net of cash acquired			0
Proceeds from sale of equipment held for rental	0	0	0
Intercompany investing	(345.3)	703.7	187.7
Other investing activities	0	0	0
Net cash used by investing activities	(345.3)	703.7	187.7
Financing activities:
Repayment of debt (original maturities greater than three months)	0	0	0
Proceeds from issuance of debt (original maturities greater than three months)	0	0	0
Repayments of debt (original maturities greater than three months)		0	0
Repurchases of Common Stock	0	0	0
Debt issuance costs			0
Proceeds from exercise of stock options	0	0	0
Dividends paid	0	0	0
Excess tax benefit from stock-based compensation		0	0
Intercompany financing	345.3	(703.7)	(187.7)
Net cash used by financing activities	345.3	(703.7)	(187.7)
Effect of exchange rate changes on cash	0	0	0
Increase (decrease) in cash and cash equivalents	0	0	0
Cash and cash equivalents at beginning of year	0	0	0
Cash and cash equivalents at end of year	$ 0	$ 0	$ 0

Unaudited Quarterly Results (De

Unaudited Quarterly Results (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended													12 Months Ended
	Sep. 30, 2017	[1]	Jun. 30, 2017	[2]	Mar. 31, 2017	[3]	Dec. 31, 2016	[4]	Sep. 30, 2016	[5]	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 1,963		$ 2,036.9		$ 1,618.3		$ 1,211.4		$ 1,755.4		$ 1,747.5	$ 1,524.3	$ 1,252	$ 6,829.6	$ 6,279.2	$ 6,098.1
Gross income	326.5		386.9		261.3		199.7		299.1		314.6	259.3	182.8	1,174.4	1,055.8	1,039.2
Operating income	134.5		211.9		80.4		36.2		95.5		146.8	91.4	30.3	463	364	398.6
Net income	$ 93.5		$ 128.6		$ 44.3		$ 19.2		$ 61.5		$ 84.2	$ 56.1	$ 14.6	$ 285.6	$ 216.4	$ 229.5
Earnings per share attributable to common shareholders:
Total earnings (loss) per share-basic (in dollars per share)	$ 1.25		$ 1.72		$ 0.59		$ 0.26		$ 0.83		$ 1.15	$ 0.77	$ 0.20	$ 3.82	$ 2.94	$ 2.94
Earnings per share-diluted:
Total earnings (loss) per share -diluted (in dollars per share)	1.23		1.69		0.58		0.26		0.82		1.13	0.76	0.19	$ 3.77	$ 2.91	$ 2.90
Common Stock per share dividends (in dollars per share)	$ 0.21		$ 0.21		$ 0.21		$ 0.21		$ 0.19		$ 0.19	$ 0.19	$ 0.19
[1]	The fourth quarter of fiscal 2017 was impacted by restructuring-related charges of $15.8 million ($11.5 million after-tax) in the access equipment segment.
[2]	The third quarter of fiscal 2017 was impacted by restructuring-related charges of $11.1 million ($11.5 million after-tax) in the access equipment segment.
[3]	The second quarter of fiscal 2017 was impacted by restructuring-related charges of $17.6 million ($14.0 million after-tax) in the access equipment segment.
[4]	The first quarter of fiscal 2017 was impacted by restructuring-related charges of $0.7 million ($0.4 million after-tax) in the access equipment segment.
[5]	The fourth quarter of fiscal 2016 was impacted by a combined $27.8 million ($17.5 million after-tax) asset impairment and workforce reduction charge in the access equipment segment.

Unaudited Quarterly Results Una

Unaudited Quarterly Results Unaudited Quarterly Results 2 (Details) - USD ($) $ in Millions	3 Months Ended					12 Months Ended
	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Quarterly Financial Information Disclosure [Abstract]
Restructuring provision	$ 15.8	$ 11.1	$ 17.6	$ 0.7	$ 27.8	$ 35.8	$ 27.8
Restructuring charge, net of tax	$ 11.5	$ 11.5	$ 14	$ 0.4	$ 17.5

SCHEDULE II - VALUATION & QUALI

SCHEDULE II - VALUATION & QUALIFYING ACCOUNTS (Details) - Allowance for Doubtful Accounts - USD ($) $ in Millions		12 Months Ended
		Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Movement in Valuation Allowances and Reserves
Balance at Beginning of Year		$ 21.2	$ 20.3	$ 21.8
Additions Charged to Expense		0.8	2.7	2
Reductions	[1]	(3.7)	(1.8)	(3.5)
Balance at End of Year		$ 18.3	$ 21.2	$ 20.3
[1]	Represents amounts written off to the reserve, net of recoveries and foreign currency translation adjustments.