Donaldson (DCI) 10-Q 7 Dec 18 2019 Q1 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	3 Months Ended
	Oct. 31, 2018	Nov. 30, 2018
Document And Entity Information [Abstract]
Entity Registrant Name	DONALDSON CO INC
Entity Central Index Key	29,644
Current Fiscal Year End Date	--07-31
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	false
Document Type	10-Q
Document Period End Date	Oct. 31, 2018
Document Fiscal Year Focus	2,019
Document Fiscal Period Focus	Q1
Amendment Flag	false
Entity Common Stock, Shares Outstanding		127,891,404

Condensed Consolidated Statemen

Condensed Consolidated Statements Of Earnings - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Oct. 31, 2018	Oct. 31, 2017
Income Statement [Abstract]
Net sales	$ 701.4	$ 644.8
Cost of sales	463	420.5
Gross profit	238.4	224.3
Operating expenses	139.7	135.2
Operating income	98.7	89.1
Interest expense	4.2	5.2
Other income, net	(1.9)	(0.8)
Earnings before income taxes	96.4	84.7
Income taxes	22.6	23.8
Net earnings	$ 73.8	$ 60.9
Weighted average shares - basic (in shares)	128.8	130.8
Weighted average shares - diluted (in shares)	131	132.7
Net (loss) earnings per share - basic (in usd per share)	$ 0.57	$ 0.47
Net (loss) earnings per share - diluted (in usd per share)	0.56	0.46
Cash dividends paid (in usd per share)	$ 0.19	$ 0.18

Condensed Consolidated Statem_2

Condensed Consolidated Statements Of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Oct. 31, 2018	Oct. 31, 2017
Statement of Comprehensive Income [Abstract]
Net earnings	$ 73.8	$ 60.9
Other comprehensive (loss) income:
Foreign currency translation loss	(24.2)	(5.1)
Pension liability adjustment, net of deferred taxes of $(0.4) and $(0.5), respectively	1.6	0.8
Gain on hedging derivatives, net of deferred taxes of $(0.2) and $(1.9), respectively	0.5	2.3
Comprehensive income	$ 51.7	$ 58.9

Condensed Consolidated Statem_3

Condensed Consolidated Statements Of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	3 Months Ended
	Oct. 31, 2018	Oct. 31, 2017
Statement of Comprehensive Income [Abstract]
Pension liability adjustment, net of deferred taxes	$ (0.4)	$ (0.5)
(Loss) gain on hedging derivatives, deferred taxes	$ (0.2)	$ (1.9)

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Oct. 31, 2018	Jul. 31, 2018
Current assets:
Cash and cash equivalents	$ 199.9	$ 204.7
Accounts receivable, less allowance of $6.3 and $8.3, respectively	542.4	534.6
Inventories, net	360.5	334.1
Prepaid expenses and other current assets	67.6	52.3
Total current assets	1,170.4	1,125.7
Property, plant and equipment, net	517.9	509.3
Goodwill	305.4	238.4
Intangible assets, net	81.3	35.6
Deferred income taxes	19	19.2
Other long-term assets	50	48.4
Total assets	2,144	1,976.6
Current liabilities:
Short-term borrowings	59	28.2
Current maturities of long-term debt	15	15.3
Trade accounts payable	230.6	201.3
Other current liabilities	183	224.6
Total current liabilities	487.6	469.4
Long-term debt	630.6	499.6
Non-current income taxes payable	106.4	105.3
Deferred income taxes	12.9	4.2
Other long-term liabilities	39.2	40.3
Total liabilities	1,276.7	1,118.8
Commitments and contingencies (Note 15)
Redeemable non-controlling interest	12.9	0
Shareholders' equity:
Preferred stock, $1.00 par value, 1,000,000 shares authorized, none issued	0	0
Common stock, $5.00 par value, 240,000,000 shares authorized, 151,643,194 shares issued	758.2	758.2
Retained earnings	1,192.6	1,122.1
Non-controlling interest	4.8	4.8
Stock-compensation plans	21.2	21.3
Accumulated other comprehensive loss	(171.9)	(149.8)
Treasury stock, 23,772,387 and 22,871,145 shares, respectively, at cost	(950.5)	(898.8)
Total shareholders' equity	854.4	857.8
Total liabilities and shareholders' equity	$ 2,144	$ 1,976.6

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Oct. 31, 2018	Jul. 31, 2018
Statement of Financial Position [Abstract]
Accounts receivable, allowance	$ 6.3	$ 8.3
Preferred stock, par value (in usd per share)	$ 1	$ 1
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued	0	0
Common stock, par value (in usd per share)	$ 5	$ 5
Common stock, shares authorized	240,000,000	240,000,000
Common stock, shares issued	151,643,194	151,643,194
Treasury stock, shares	23,772,387	22,871,145

Condensed Consolidated Statem_4

Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Oct. 31, 2018	Oct. 31, 2017
Operating Activities
Net earnings	$ 73.8	$ 60.9
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	19.3	18.9
Deferred income taxes	(0.4)	0.2
Stock-based compensation expense	6.9	6.7
Other, net	(1)	0.8
Changes in operating assets and liabilities, excluding effect of acquired businesses	(35.3)	(23.6)
Net cash provided by operating activities	63.3	63.9
Investing Activities
Net expenditures on property, plant and equipment	(28.2)	(19.9)
Acquisitions, net of cash acquired	(96)	0.8
Net cash used in investing activities	(124.2)	(19.1)
Financing Activities
Proceeds from long-term debt	135	105
Repayments of long-term debt	(14.5)	(35.2)
Change in short-term borrowings	32.1	(9.1)
Purchase of treasury stock	(80.9)	(42.6)
Dividends paid	(24.4)	(23.4)
Tax withholding payments for stock compensation transactions	(2.2)	(0.5)
Exercise of stock options	16.2	3.9
Net cash provided by (used in) financing activities	61.3	(1.9)
Effect of exchange rate changes on cash	(5.2)	(1.7)
(Decrease) increase in cash and cash equivalents	(4.8)	41.2
Cash and cash equivalents, beginning of period	204.7	308.4
Cash and cash equivalents, end of period	$ 199.9	$ 349.6

Summary of Significant Accounti

Summary of Significant Accounting Policies	3 Months Ended
	Oct. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Basis of Presentation The accompanying unaudited Condensed Consolidated Financial Statements of Donaldson Company, Inc. and its subsidiaries (the Company) have been prepared in accordance with generally accepted accounting principles in the United States (GAAP) and the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, they do not include all of the information and notes required for complete financial statements. In the opinion of management, all adjustments considered necessary for a fair statement of earnings, comprehensive income, financial position and cash flows have been included and are of a normal recurring nature. Operating results for the three month period ended October 31, 2018 are not necessarily indicative of the results that may be expected for future periods. The year-end condensed consolidated balance sheet information was derived from the Company's audited financial statements but does not include all disclosures required by GAAP. For further information, refer to the Audited Consolidated Financial Statements and Notes thereto included in the Company’s Annual Report on Form 10-K for the year ended July 31, 2018 . New Accounting Standards Recently Adopted In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (ASC 606), which amended revenue recognition guidance to clarify the principles for recognizing revenue from contracts with customers. The guidance requires an entity to recognize revenue to depict the transfer of goods or services to customers in an amount that reflects the consideration to which an entity expects to be entitled in exchange for those goods or services. The guidance also requires expanded disclosures relating to the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. Additionally, qualitative and quantitative disclosures are required about customer contracts, significant judgments and changes in judgments and assets recognized from the costs to obtain or fulfill a contract. In 2016, the FASB issued ASU 2016-08, ASU 2016-10, ASU 2016-11, ASU 2016-12 and ASU 2016-20 to clarify, among other things, the implementation guidance related to principal versus agent considerations, identifying performance obligations and accounting for licenses of intellectual property. This accounting guidance was effective for the Company beginning in the first quarter of fiscal 2019 . The standard was adopted using the modified retrospective method, applying the guidance to those contracts which were not completed as of July 31, 2018, with the cumulative effect of adoption recognized during the first quarter. Refer to Note 6 for the impact of the adoption of this new standard. In January 2017, the FASB issued ASU 2017-01, Business Combinations: Clarifying the Definition of a Business (ASU 2017-01). The new guidance provides a more robust framework to use in determining when a set of assets and activities is a business. The amendments provide more consistency in applying the guidance, reduce the costs of application and make the definition of a business more operable. ASU 2017-01 is effective for the Company beginning in the first quarter of fiscal 2019 . The Company adopted ASU 2017-01 in the first quarter of fiscal 2019 and it did not have a material impact on its Condensed Consolidated Financial Statements. In March 2017, the FASB issued ASU 2017-07, Compensation - Retirement Benefits (Topic 715) (ASU 2017-07). The new guidance requires employers to disaggregate and present separately the current service cost component from the other components of net benefit cost within the consolidated statement of earnings. ASU 2017-07 is effective for the Company beginning in the first quarter of fiscal 2019 . The Company adopted ASU 2017-07 in the first quarter of fiscal 2019 using the retrospective method. This resulted in a reclassification of net benefit costs in its Condensed Consolidated Statements of Earnings, with a decrease of $1.6 million in operating income and a corresponding $1.6 million increase to other income, net for the three months ended October 31, 2017 . In August 2017, the FASB issued ASU 2017-12, Derivatives and Hedging: Targeted Improvements to Accounting for Hedging Activities (ASU 2017-12), which improves the financial reporting of hedging relationships to better portray the economic results of an entity's risk management activities in its financial statements and make certain targeted improvements to simplify the application of the hedge accounting guidance. The guidance expands the ability to hedge non-financial and financial risk components, reduces complexity in fair value hedges of interest rate risk, eliminates the requirement to separately measure and report hedge ineffectiveness and eases certain hedge effectiveness assessment requirements. ASU 2017-12 is effective for the Company beginning in the first quarter of fiscal 2020 , and early adoption is permitted. The Company adopted ASU 2017-12 in the first quarter of fiscal 2019 and it did not have a material impact on its Condensed Consolidated Financial Statements. New Accounting Standards Not Yet Adopted In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) (ASU 2016-02), which requires lessees to recognize right-of-use assets and lease liabilities for substantially all leases. This accounting guidance is effective for the Company beginning in the first quarter of fiscal 2020 on a modified retrospective basis. The Company has established a project team that is currently evaluating the population of leased assets to assess the impact of the adoption of ASU 2016-02 on its Consolidated Financial Statements. In June 2016, the FASB issued ASU 2016-13, Measurement of Credit Losses on Financial Instruments (ASU 2016-13). This guidance introduces a new model for recognizing credit losses on financial instruments based on an estimate of current expected credit losses. Financial instruments impacted include accounts receivable, trade receivables, other financial assets measured at amortized cost and other off-balance sheet credit exposures. The new guidance is effective for the Company beginning in the first quarter of fiscal 2021 , with early adoption permitted. The Company is evaluating the effect of ASU 2016-13 on its Consolidated Financial Statements. In February 2018, the FASB issued ASU 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income (ASU 2018-02). The guidance allows a company to elect to reclassify from accumulated other comprehensive income (AOCI) to retained earnings the stranded tax effects from the adoption of the newly enacted federal corporate tax rate as a result of the U.S. Tax Cuts and Jobs Act. The amount of the reclassification is calculated as the difference between the amount initially charged to other comprehensive income (OCI) at the previously enacted tax rate that remains in AOCI and the amount that would have been charged using the newly enacted tax rate, excluding any valuation allowance previously charged to income. ASU 2018-02 is effective for the Company beginning in the first quarter of fiscal 2020 , and early adoption is permitted. The Company is evaluating the impact of the adoption of ASU 2018-02 on its Consolidated Financial Statements. In August 2018, the FASB issued ASU 2018-15, Intangibles-Goodwill and Other-Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract (ASU 2018-15). The amendments in this update align the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software (and hosting arrangements that include an internal-use software license). The accounting for the service element of a hosting arrangement that is a service contract is not affected by the amendments in this update. The amendments in this update are effective for interim and annual periods for the Company beginning in the first quarter of fiscal 2021 , with early adoption permitted. The amendments in this update should be applied either retrospectively or prospectively to all implementation costs incurred after the date of adoption. The Company is evaluating the impact of the adoption of ASU 2018-15 on its Consolidated Financial Statements.

Acquisitions

Acquisitions	3 Months Ended
	Oct. 31, 2018
Business Combinations [Abstract]
Acquisitions	Acquisitions On October 18, 2018, the Company acquired 88% of the shares of BOFA International LTD (BOFA), headquartered in the United Kingdom, for cash consideration of $98.2 million less cash acquired of $2.2 million . BOFA designs, develops and manufactures fume extraction systems across a wide range of industrial air filtration applications. The acquisition will allow Donaldson to accelerate its global growth in the fume collection business and add additional filtration technology to the Company's existing product lines. The fair values assigned to the acquired assets and liabilities of BOFA were approximately $12.2 million of net tangible assets, $48.8 million of identifiable intangible assets, $71.0 million of goodwill, $8.6 million of deferred tax liabilities and $14.3 million of assumed debt. The assumed debt was repaid in October 2018. The identifiable intangible assets were related to customer relationships, patents, trademarks and technology and have estimated useful lives ranging from 5 to 15 years. The acquired intangible assets including goodwill are not deductible for tax purposes. The purchase price allocation is preliminary pending the outcome of the final valuation of the net assets acquired. The Company is reporting BOFA’s results of operations within the Industrial Products segment. Transaction costs were expensed as incurred and were not significant for the three months ended October 31, 2018 . The acquisition also provides call and put options that, if exercised by either the Company or the minority interest holders after a certain period of time, would obligate the Company to purchase the remaining 12% of the shares of BOFA at a price indexed to the performance of the acquired entity. Due to the redemption features, the minority interest holders’ value is classified as a redeemable non-controlling interest in the Company’s Condensed Consolidated Balance Sheets at the fair value upon acquisition of $13.1 million . Pro forma financial information for this acquisition has not been presented because it is not material to the Company's consolidated results of operations.

Supplemental Balance Sheet Info

Supplemental Balance Sheet Information	3 Months Ended
	Oct. 31, 2018
Assets [Abstract]
Supplemental Balance Sheet Information	Supplemental Balance Sheet Information The components of net inventories are as follows (in millions): October 31, July 31, Raw materials $ 119.7 $ 128.7 Work in process 41.2 27.4 Finished products 199.6 178.0 Inventories, net $ 360.5 $ 334.1 The components of net property, plant and equipment are as follows (in millions): October 31, July 31, Land $ 23.7 $ 22.8 Buildings 309.2 310.8 Machinery and equipment 775.1 769.1 Computer software 133.4 132.6 Construction in progress 74.1 64.4 Less: accumulated depreciation (797.6 ) (790.4 ) Property, plant and equipment, net $ 517.9 $ 509.3

Earnings Per Share

Earnings Per Share	3 Months Ended
	Oct. 31, 2018
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share The Company’s basic net earnings per share is computed by dividing net earnings by the weighted average number of outstanding common shares. The Company’s diluted net earnings per share is computed by dividing net earnings by the weighted average number of outstanding common shares and common share equivalents relating to stock options and stock incentive plans. Certain outstanding options were excluded from the diluted net earnings per share calculations because their exercise prices are greater than the average market price of the Company’s common stock during those periods. Options excluded from the diluted net earnings per share calculations were 0.8 million and zero for the three months ended October 31, 2018 and 2017 , respectively. The following table presents the information necessary to calculate basic and diluted net earnings per share (in millions, except per share amounts): Three Months Ended 2018 2017 Net earnings for basic and diluted earnings per share computation $ 73.8 $ 60.9 Weighted average common shares outstanding: Weighted average common shares – basic 128.8 130.8 Dilutive impact of share-based awards 2.2 1.9 Weighted average common shares – diluted 131.0 132.7 Net earnings per share – basic $ 0.57 $ 0.47 Net earnings per share – diluted $ 0.56 $ 0.46

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	3 Months Ended
	Oct. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets The following is a reconciliation of goodwill by reportable segment for the three months ended October 31, 2018 (in millions): Engine Products Industrial Products Total Goodwill Balance as of July 31, 2018 $ 84.9 $ 153.5 $ 238.4 Goodwill acquired — 71.0 71.0 Foreign exchange translation (0.3 ) (3.7 ) (4.0 ) Balance as of October 31, 2018 $ 84.6 $ 220.8 $ 305.4 The following is a reconciliation of net intangible asset classes for the three months ended October 31, 2018 (in millions): Customer relationships and lists Gross Carrying Amount Accumulated Amortization Net Intangible Assets Balance as of July 31, 2018 $ 63.0 $ (35.7 ) $ 27.3 Intangibles acquired 42.0 — 42.0 Amortization expense — (1.0 ) (1.0 ) Foreign exchange translation (1.7 ) 0.2 (1.5 ) Balance as of October 31, 2018 $ 103.3 $ (36.5 ) $ 66.8 Patents, trademarks and technology Gross Carrying Amount Accumulated Amortization Net Intangible Assets Balance as of July 31, 2018 $ 43.7 $ (35.4 ) $ 8.3 Intangibles acquired 6.8 — 6.8 Amortization expense — (0.4 ) (0.4 ) Foreign exchange translation (1.1 ) 0.9 (0.2 ) Balance as of October 31, 2018 $ 49.4 $ (34.9 ) $ 14.5

Revenue

Revenue	3 Months Ended
	Oct. 31, 2018
Revenue from Contract with Customer [Abstract]
Revenue	Revenue The Company recognizes revenue on a wide range of filtration solutions sold to customers in many industries around the globe. The vast majority of the Company’s performance obligations within customer sales contracts are for manufactured filtration systems and replacement parts. The Company does have limited services, such as nonrecurring engineering (NRE) and installation. Customer contracts may include multiple performance obligations and the transaction price is allocated to each distinct performance obligation based on its relative standalone selling price. Revenue Recognition Policy Revenue is measured as the amount of consideration the Company expects to receive in exchange for the fulfillment of performance obligations. The transaction price of a contract could be reduced by variable consideration including product refunds, returns, volume rebates and discounts in the determination of net sales. The Company primarily relies on historical experience and anticipated future performance to estimate the variable consideration. Revenue is recognized to the extent that it is probable that a significant reversal of revenue will not occur when the contingency is resolved. The Company also accounts for amounts billed to customers for reimbursement of shipping and handling as fulfillment costs by recording these amounts as revenue and accruing the costs when the related revenue is recognized. For most customer contracts, the Company recognizes revenue at a point in time when control of the goods or services is transferred to the customer. For product sales, control is typically deemed to have transferred in accordance with the shipping terms, either at the time of shipment from the plants or distribution centers or the time of delivery to the customers. Revenue is recognized for services upon completion of those services. Due to the customized nature of some of the Company’s products, together with contractual provisions in certain customer contracts that provide the Company with an enforceable right to payment of the transaction price for performance completed to date, revenue is recognized for these contracts over time. For these contracts, the Company recognizes revenue on products by an output measure of production, which fairly depicts the amount of revenue the Company is entitled to. The timing of revenue recognized from these products is slightly accelerated compared to revenue recognized at the point in time of shipment or delivery. Revenue generated from NRE services is also satisfied over time, measured as contractual milestones are achieved as this represents value transferred to the customer. Incremental costs of obtaining a contract with a customer and other costs to fulfill a contract are required to be capitalized. The only such cost material to the Company is sales commission expense. The Company has elected to expense these costs of obtaining a contract as incurred when the related contract period is less than one year. The Company does not pay upfront sales commissions on contracts when the related contract period is greater than one year, thus has not capitalized any amounts as of October 31, 2018 . Revenue Disaggregation Net sales disaggregated by geography based on the location where the customer's order was placed (in millions): Three Months Ended 2018 2017 United States $ 305.1 $ 274.4 Europe, Middle East and Africa 196.3 184.8 Asia Pacific 147.3 132.1 Latin America 52.7 53.5 Total net sales $ 701.4 $ 644.8 Net sales disaggregated by product group (in millions): Three Months Ended 2018 2017 Engine Products segment Off-Road $ 76.2 $ 75.0 On-Road 45.9 33.3 Aftermarket 331.2 309.1 Aerospace and Defense 27.6 24.7 Engine Products segment net sales 480.9 442.1 Industrial Products segment Industrial Filtration Solutions 149.4 134.5 Gas Turbine Systems 25.5 26.3 Special Applications 45.6 41.9 Industrial Products segment net sales 220.5 202.7 Total net sales $ 701.4 $ 644.8 Contract Assets and Liabilities The satisfaction of performance obligations and the resulting recognition of revenue typically corresponds with billing of the customer. In limited circumstances, the customer may be billed at a time later than when revenue is recognized, resulting in contract assets, which are reported in prepaid expenses and other current assets on the Condensed Consolidated Balance Sheets. Contract assets were $13.1 million as of October 31, 2018 . In other limited circumstances, the Company will require a down payment from the customer prior to the satisfaction of performance obligations. This results in contract liabilities, or deferred revenue, which is reported in other current liabilities and other long-term liabilities on the Condensed Consolidated Balance Sheets, depending on when revenue is expected to be recognized. Contract liabilities were $12.0 million and $10.5 million as of October 31, 2018 and July 31, 2018 , respectively. The Company will recognize revenue in future periods related to remaining performance obligations for certain open contracts. Generally, these contracts have terms of one year or less. The amount of revenue related to unsatisfied performance obligations in which the original duration of the contract is greater than one year is not significant. Adoption of ASC 606 Note 1 describes the requirements of the new revenue recognition standard, ASC 606. The cumulative effect of the adoption on the Company’s August 1, 2018 opening balance sheet is as follows (in millions): Balance at July 31, 2018 Adjustments for ASC 606 Balance at August 1, 2018 Assets Inventories, net $ 334.1 $ (7.3 ) $ 326.8 Prepaid expense and other current assets 52.3 14.0 66.3 Liabilities Other current liabilities 86.6 0.3 86.9 Deferred income taxes 4.2 1.1 5.3 Equity Retained earnings 1,122.1 5.3 1,127.4 These adjustments primarily related to certain contracts that qualify for revenue recognition over time under the new standard. This change does not have a material impact on revenue recognized during the three months ended October 31, 2018 . In addition, the adoption of ASC 606 impacted one set of contracts within the Engine Products segment in which Donaldson is deemed to be the principal under the new standard because the Company has control through the manufacturing of products prior to the sale of those products to the customer. For these contracts, the previous practice of recognizing revenue on a net basis, in which the amount of net sales recorded is the net amount retained after paying product costs to suppliers, has changed under ASC 606 to recognizing revenue on a gross basis, in which the amount of net sales recorded is the gross amount received from the customer, with corresponding product costs recorded as cost of sales. This change did not result in a cumulative effect adjustment under the modified retrospective method of adoption since there is no impact to the timing of revenue recognition but it has increased net sales and cost of sales on a prospective basis. The increase in net sales and cost of sales for this change was $5.1 million for the three months ended October 31, 2018 .

Warranty

Warranty	3 Months Ended
	Oct. 31, 2018
Standard Product Warranty Disclosure [Abstract]
Warranty	Warranty The Company estimates warranty expense on certain products at the time of sale. The following is a reconciliation of warranty reserves, included in other current liabilities and other long-term liabilities, for the three months ended October 31, 2018 and 2017 (in millions): Three Months Ended 2018 2017 Balance at beginning of period $ 18.9 $ 14.6 Accruals for warranties issued during the reporting period 0.3 0.7 Accruals related to pre-existing warranties (including changes in estimates) (0.4 ) 0.9 Less: settlements made during the period (1.7 ) (0.5 ) Balance at end of period $ 17.1 $ 15.7 There were no material specific warranty matters accrued for or significant settlements made in the three months ended October 31, 2018 or 2017 . The Company’s warranty matters are not expected to have a material impact on the Company's results of operations, liquidity or financial position.

Stock-Based Compensation

Stock-Based Compensation	3 Months Ended
	Oct. 31, 2018
Share-based Compensation [Abstract]
Stock-Based Compensation	Stock-Based Compensation Stock-based compensation expense is recognized using the fair-value method for all awards. The Company determines the fair value of stock option awards using the Black-Scholes option pricing model. Options are granted whereby the option exercise price is equivalent to the market price of the Company's common stock at the date of grant. For the three months ended October 31, 2018 , the Company recorded pretax stock-based compensation expense associated with stock options of $4.9 million and recorded $1.1 million of related tax benefits. For the three months ended October 31, 2017 , the Company recorded pretax stock-based compensation expense associated with stock options of $3.8 million and recorded $1.2 million of related tax benefits. In addition, for the three months ended October 31, 2018 , the Company recorded expense associated with performance-based awards of $1.7 million . For the three months ended October 31, 2017 , the Company recorded expense associated with performance-based awards of $2.7 million . The following table summarizes stock option activity during the three months ended October 31, 2018 : Options Outstanding Weighted Average Exercise Price Outstanding as of July 31, 2018 6,785,812 $ 34.93 Granted 841,725 $ 59.18 Exercised (743,708 ) $ 24.24 Canceled (14,732 ) $ 44.19 Outstanding as of October 31, 2018 6,869,097 $ 39.03 The total intrinsic value of options exercised during the three months ended October 31, 2018 and 2017 was $21.7 million and $4.2 million , respectively. The weighted average fair value for options granted during the three months ended October 31, 2018 and 2017 was $12.43 and $ 9.18 per share, respectively. The following table summarizes information concerning outstanding and exercisable options as of October 31, 2018 : Range of Exercise Prices Number Outstanding Weighted Average Remaining Contractual Life (Years) Weighted Average Exercise Price of Outstanding Options Number Exercisable Weighted Average Exercise Price of Exercisable Options $ 0.00 to $27.69 390,413 1.10 $ 20.78 390,413 $ 20.78 $27.70 to $32.69 1,394,058 5.18 $ 28.56 1,095,417 $ 28.67 $32.70 to $37.69 1,247,671 3.79 $ 34.44 1,246,838 $ 34.44 $37.70 to $42.69 1,305,734 5.94 $ 40.35 1,218,534 $ 40.21 $42.70 and above 2,531,221 8.76 $ 49.20 631,993 $ 44.40 6,869,097 6.16 $ 39.03 4,583,195 $ 34.80 As of October 31, 2018 , the aggregate intrinsic value of options outstanding and exercisable was $90.7 million and $75.7 million , respectively. As of October 31, 2018 , there was $12.6 million of total unrecognized compensation expense related to non-vested stock options granted under the 2010 Master Stock Incentive Plan. This unvested expense is expected to be recognized during fiscal years 2019 , 2020 , 2021 and 2022 .

Employee Benefit Plans

Employee Benefit Plans	3 Months Ended
	Oct. 31, 2018
Retirement Benefits, Description [Abstract]
Employee Benefit Plans	Employee Benefit Plans The Company and certain of its international subsidiaries have defined benefit pension plans for many of their hourly and salaried employees. There are two types of U.S. plans. The first type of U.S. plan (Hourly Pension Plan) is a traditional defined benefit pension plan primarily for union production employees. The second plan (Salaried Pension Plan) is for some salaried and non-union production employees that provides defined benefits pursuant to a cash balance feature whereby a participant accumulates a benefit comprised of a percentage of current salary that varies with years of service, interest credits and transition credits. The Company no longer allows entrants into the U.S. Salaried Pension Plan and the employees no longer accrue Company contribution credits under the plan. Instead, eligible employees receive a 3% annual Company retirement contribution to their 401(k) in addition to the Company’s normal 401(k) match. The non-U.S. plans generally provide pension benefits based on years of service and compensation level. Net periodic benefit costs for the Company’s pension plans include the following components (in millions): Three Months Ended 2018 2017 Net periodic benefit costs: Service cost $ 1.5 $ 2.0 Interest cost 4.1 3.7 Expected return on assets (6.6 ) (6.5 ) Prior service cost amortization 0.1 0.1 Actuarial loss amortization 1.1 1.1 Net periodic benefit costs $ 0.2 $ 0.4 The Company’s general funding policy is to make at least the minimum required contributions as required by applicable regulations, plus any additional amounts that it determines to be appropriate. For the three months ended October 31, 2018 , the Company made required contributions of $1.0 million to its non-qualified U.S. pension plans and $0.3 million to its non-U.S. pension plans. The estimated minimum funding requirement for the Company’s qualified U.S. plans for the plan year ending July 31, 2019 is $3.1 million . In accordance with the Pension Protection Act of 2006, this contribution obligation may be met with existing credit balances that resulted from payments above the minimum obligation in prior years. The Company has sufficient credit balances to meet the minimum obligation for the plan year ending July 31, 2019 . The Company estimates it will contribute an additional $1.0 million to its non-U.S. pension plans during the remainder of fiscal 2019 based upon the local government prescribed funding requirements. Future estimates of the Company’s required pension plan contributions may change significantly depending on the actual rate of return on plan assets, discount rates and regulatory requirements.

Income Taxes

Income Taxes	3 Months Ended
	Oct. 31, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes On December 22, 2017, the U.S. Tax Cuts and Jobs Act (TCJA) was enacted into law. The TCJA significantly reforms the Internal Revenue Code of 1986, including but not limited to reducing the U.S. federal corporate income tax rate from 35 percent to 21 percent and moving toward a territorial tax system with a one-time transition tax imposed on previously unremitted foreign earnings and profits. Staff Accounting Bulletin 118 (SAB 118) includes additional guidance allowing companies to use a measurement period that should not extend beyond one year from the TCJA enactment date to account for the impacts of the law in their financial statements. There have been no material measurement period adjustments made during the three months ended October 31, 2018 related to the provisional amounts recorded and disclosed in the Company’s Annual Report on Form 10-K for the year ended July 31, 2018 . During the three months ended October 31, 2018 , the Company made the accounting policy election to treat taxes related to the Global Intangible Low-Taxed Income (GILTI) provision of the TCJA as a current period expense when incurred. Although the Company believes it has made reasonable estimates in accounting for the impacts of the TCJA, these tax charges and benefits are provisional, as the Company is still analyzing certain aspects of the legislation and refining calculations as information becomes available during the measurement period as allowed by SAB 118. The accounting for the income tax effects of the TCJA is expected to be completed during the second quarter of fiscal 2019 and any future adjustments will be recognized as discrete income tax expense or benefit in the period the adjustments are determined. As of October 31, 2018 , the gross unrecognized tax benefits were $19.4 million and accrued interest and penalties on these unrecognized tax benefits were $1.9 million . The Company recognizes accrued interest and penalties related to unrecognized tax benefits in income tax expense. If the Company were to prevail on all unrecognized tax benefits recorded, substantially all of the unrecognized tax benefits would benefit the effective tax rate. With an average statute of limitations of approximately five years, up to $1.7 million of the unrecognized tax benefits could potentially expire in the next 12-month period, unless extended by an audit. The Company files income tax returns in the U.S. federal jurisdiction and various state and foreign jurisdictions. With few exceptions, the Company is no longer subject to state and foreign income tax examinations by tax authorities for years before 2010. The United States Internal Revenue Service (IRS) has completed examinations of the Company’s U.S. federal income tax returns through 2016. The Company protested certain IRS proposed material adjustments for fiscal years 2015 and 2016 and entered into the administrative appeals process with the IRS. As previously stated, the Company continues to believe the claims to be without merit and will vigorously defend its position, through litigation if necessary. The Company believes that it is remote that any adjustment necessary to the reserve for income taxes over the next 12-month period will be material. However, it is possible the ultimate resolution of audits or disputes may result in a material change to the reserve for income taxes, although the quantification of such potential adjustments cannot be made at this time.

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Oct. 31, 2018
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements As of October 31, 2018 , the carrying values of cash and cash equivalents, accounts receivables, short-term borrowings and trade accounts payable approximate fair value because of the short-term nature of these instruments. As of October 31, 2018 , the estimated fair value of long-term debt with fixed interest rates was $258.6 million compared to its carrying value of $275.0 million . The fair value is estimated by discounting the projected cash flows using the rate at which similar amounts of debt could currently be borrowed. Long-term debt would be classified as Level 2 in the fair value hierarchy. The carrying values of long-term debt with variable interest rates approximate fair value.

Shareholders' Equity

Shareholders' Equity	3 Months Ended
	Oct. 31, 2018
Stockholders' Equity Note [Abstract]
Shareholders' Equity	Shareholders' Equity The Company’s Board of Directors authorized the repurchase of up to 14.0 million shares of common stock under the Company's stock repurchase plan. This repurchase authorization is effective until terminated by the Board of Directors. During the three months ended October 31, 2018 , the Company repurchased 1.6 million shares for $80.9 million . As of October 31, 2018 , the Company had remaining authorization to repurchase 2.9 million shares under this plan. On November 30, 2018, the Company's Board of Directors declared a cash dividend in the amount of 19.0 cents per common share, payable December 21, 2018, to shareholders of record as of December 11, 2018.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income	3 Months Ended
	Oct. 31, 2018
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Income	Accumulated Other Comprehensive Income Changes in accumulated other comprehensive loss by component for the three months ended October 31, 2018 and 2017 are as follows (in millions): Foreign Pension Derivative Total Balance as of July 31, 2018, net of tax $ (66.1 ) $ (82.9 ) $ (0.8 ) $ (149.8 ) Other comprehensive (loss) income before reclassifications and tax (24.2 ) — 1.0 (23.2 ) Tax expense — — (0.3 ) (0.3 ) Other comprehensive (loss) income before reclassifications, net of tax (24.2 ) — 0.7 (23.5 ) Reclassifications, before tax — 2.0 (0.3 ) 1.7 Tax (expense) benefit — (0.4 ) 0.1 (0.3 ) Reclassifications, net of tax — 1.6 (1) (0.2 ) (2) 1.4 Other comprehensive (loss) income, net of tax (24.2 ) 1.6 0.5 (22.1 ) Balance as of October 31, 2018, net of tax $ (90.3 ) $ (81.3 ) $ (0.3 ) $ (171.9 ) Balance as of July 31, 2017, net of tax $ (58.8 ) $ (95.1 ) $ (3.1 ) $ (157.0 ) Other comprehensive (loss) income before reclassifications and tax (5.1 ) — 3.1 (2.0 ) Tax expense — — (1.5 ) (1.5 ) Other comprehensive (loss) income before reclassifications, net of tax (5.1 ) — 1.6 (3.5 ) Reclassifications, before tax — 1.3 1.1 2.4 Tax expense — (0.5 ) (0.4 ) (0.9 ) Reclassifications, net of tax — 0.8 (1) 0.7 (2) 1.5 Other comprehensive (loss) income, net of tax (5.1 ) 0.8 2.3 (2.0 ) Balance as of October 31, 2017, net of tax $ (63.9 ) $ (94.3 ) $ (0.8 ) $ (159.0 ) (1) Primarily includes net amortization of prior service costs and actuarial losses included in net periodic benefit cost (see Note 9) that were reclassified from accumulated other comprehensive loss to operating expenses or cost of sales. (2) Relates to foreign currency cash flow hedges that were reclassified from accumulated other comprehensive loss to other income, net.

Guarantees

Guarantees	3 Months Ended
	Oct. 31, 2018
Guarantees [Abstract]
Guarantees	Guarantees The Company and Caterpillar Inc. equally own the shares of Advanced Filtration Systems Inc. (AFSI), an unconsolidated joint venture, and guarantee certain debt of the joint venture. As of October 31, 2018 , AFSI had $35.8 million of outstanding debt, of which the Company guarantees half. In addition, during the three months ended October 31, 2018 and 2017 , the Company recorded a loss of $0.3 million and earnings of $0.1 million , respectively, from this equity method investment. During the three months ended October 31, 2018 and 2017 , the Company recorded royalty income related to AFSI of $1.7 million and $1.9 million , respectively, in other income, net. As of October 31, 2018 and July 31, 2018 , the Company had a contingent liability for standby letters of credit totaling $11.2 million and $8.2 million , respectively, that have been issued and are outstanding. The letters of credit guarantee payment to third parties in the event the Company is in breach of contract terms as detailed in each letter of credit. As of October 31, 2018 and July 31, 2018 , there were no amounts drawn upon these letters of credit.

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Oct. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies The Company records provisions with respect to identified claims or lawsuits when it is probable that a liability has been incurred and the amount of the loss can be reasonably estimated. Claims and lawsuits are reviewed quarterly and provisions are taken or adjusted to reflect the status of a particular matter. The Company believes the recorded estimated liability in its Condensed Consolidated Financial Statements is adequate in light of the probable and estimable outcomes. The recorded liabilities were not material to the Company’s results of operations, liquidity or financial position and the Company believes it is remote that the settlement of any of the currently identified claims or litigation will be materially in excess of what is accrued.

Segment Reporting

Segment Reporting	3 Months Ended
	Oct. 31, 2018
Segment Reporting, Measurement Disclosures [Abstract]
Segment Reporting	Segment Reporting The Company has identified two reportable segments: Engine Products and Industrial Products. Segment determination is based on the internal organization structure, management of operations and performance evaluation by management and the Company’s Board of Directors. Corporate and Unallocated includes corporate expenses elected to be non-allocable to the segments, such as interest expense. The Company has an internal measurement system to evaluate performance and allocate resources. The Company’s manufacturing facilities serve both reporting segments. Therefore, the Company uses an allocation methodology to assign costs and assets to the segments. Segment assets assigned are primarily accounts receivable, inventories, property, plant and equipment and goodwill. The Company is an integrated enterprise, characterized by substantial intersegment cooperation, cost allocations and sharing of assets. Therefore, the Company does not represent that these segments, if operated independently, would report the earnings before income taxes and other financial information shown below. Segment detail is summarized as follows (in millions): Three Months Ended 2018 2017 Net sales Engine Products segment $ 480.9 $ 442.1 Industrial Products segment 220.5 202.7 Total $ 701.4 $ 644.8 Earnings before income taxes Engine Products segment $ 63.9 $ 62.7 Industrial Products segment 36.6 29.4 Corporate and Unallocated (4.1 ) (7.4 ) Total $ 96.4 $ 84.7 There were no customers that accounted for over 10% of net sales for the three months ended October 31, 2018 or 2017 . There were no customers that accounted for over 10% of gross accounts receivable as of October 31, 2018 or July 31, 2018 .

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Oct. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited Condensed Consolidated Financial Statements of Donaldson Company, Inc. and its subsidiaries (the Company) have been prepared in accordance with generally accepted accounting principles in the United States (GAAP) and the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, they do not include all of the information and notes required for complete financial statements. In the opinion of management, all adjustments considered necessary for a fair statement of earnings, comprehensive income, financial position and cash flows have been included and are of a normal recurring nature. Operating results for the three month period ended October 31, 2018 are not necessarily indicative of the results that may be expected for future periods. The year-end condensed consolidated balance sheet information was derived from the Company's audited financial statements but does not include all disclosures required by GAAP. For further information, refer to the Audited Consolidated Financial Statements and Notes thereto included in the Company’s Annual Report on Form 10-K for the year ended July 31, 2018 .
New Accounting Standards Recently Adopted and New Accounting Standards Not Yet Adopted	New Accounting Standards Recently Adopted In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (ASC 606), which amended revenue recognition guidance to clarify the principles for recognizing revenue from contracts with customers. The guidance requires an entity to recognize revenue to depict the transfer of goods or services to customers in an amount that reflects the consideration to which an entity expects to be entitled in exchange for those goods or services. The guidance also requires expanded disclosures relating to the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. Additionally, qualitative and quantitative disclosures are required about customer contracts, significant judgments and changes in judgments and assets recognized from the costs to obtain or fulfill a contract. In 2016, the FASB issued ASU 2016-08, ASU 2016-10, ASU 2016-11, ASU 2016-12 and ASU 2016-20 to clarify, among other things, the implementation guidance related to principal versus agent considerations, identifying performance obligations and accounting for licenses of intellectual property. This accounting guidance was effective for the Company beginning in the first quarter of fiscal 2019 . The standard was adopted using the modified retrospective method, applying the guidance to those contracts which were not completed as of July 31, 2018, with the cumulative effect of adoption recognized during the first quarter. Refer to Note 6 for the impact of the adoption of this new standard. In January 2017, the FASB issued ASU 2017-01, Business Combinations: Clarifying the Definition of a Business (ASU 2017-01). The new guidance provides a more robust framework to use in determining when a set of assets and activities is a business. The amendments provide more consistency in applying the guidance, reduce the costs of application and make the definition of a business more operable. ASU 2017-01 is effective for the Company beginning in the first quarter of fiscal 2019 . The Company adopted ASU 2017-01 in the first quarter of fiscal 2019 and it did not have a material impact on its Condensed Consolidated Financial Statements. In March 2017, the FASB issued ASU 2017-07, Compensation - Retirement Benefits (Topic 715) (ASU 2017-07). The new guidance requires employers to disaggregate and present separately the current service cost component from the other components of net benefit cost within the consolidated statement of earnings. ASU 2017-07 is effective for the Company beginning in the first quarter of fiscal 2019 . The Company adopted ASU 2017-07 in the first quarter of fiscal 2019 using the retrospective method. This resulted in a reclassification of net benefit costs in its Condensed Consolidated Statements of Earnings, with a decrease of $1.6 million in operating income and a corresponding $1.6 million increase to other income, net for the three months ended October 31, 2017 . In August 2017, the FASB issued ASU 2017-12, Derivatives and Hedging: Targeted Improvements to Accounting for Hedging Activities (ASU 2017-12), which improves the financial reporting of hedging relationships to better portray the economic results of an entity's risk management activities in its financial statements and make certain targeted improvements to simplify the application of the hedge accounting guidance. The guidance expands the ability to hedge non-financial and financial risk components, reduces complexity in fair value hedges of interest rate risk, eliminates the requirement to separately measure and report hedge ineffectiveness and eases certain hedge effectiveness assessment requirements. ASU 2017-12 is effective for the Company beginning in the first quarter of fiscal 2020 , and early adoption is permitted. The Company adopted ASU 2017-12 in the first quarter of fiscal 2019 and it did not have a material impact on its Condensed Consolidated Financial Statements. New Accounting Standards Not Yet Adopted In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) (ASU 2016-02), which requires lessees to recognize right-of-use assets and lease liabilities for substantially all leases. This accounting guidance is effective for the Company beginning in the first quarter of fiscal 2020 on a modified retrospective basis. The Company has established a project team that is currently evaluating the population of leased assets to assess the impact of the adoption of ASU 2016-02 on its Consolidated Financial Statements. In June 2016, the FASB issued ASU 2016-13, Measurement of Credit Losses on Financial Instruments (ASU 2016-13). This guidance introduces a new model for recognizing credit losses on financial instruments based on an estimate of current expected credit losses. Financial instruments impacted include accounts receivable, trade receivables, other financial assets measured at amortized cost and other off-balance sheet credit exposures. The new guidance is effective for the Company beginning in the first quarter of fiscal 2021 , with early adoption permitted. The Company is evaluating the effect of ASU 2016-13 on its Consolidated Financial Statements. In February 2018, the FASB issued ASU 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income (ASU 2018-02). The guidance allows a company to elect to reclassify from accumulated other comprehensive income (AOCI) to retained earnings the stranded tax effects from the adoption of the newly enacted federal corporate tax rate as a result of the U.S. Tax Cuts and Jobs Act. The amount of the reclassification is calculated as the difference between the amount initially charged to other comprehensive income (OCI) at the previously enacted tax rate that remains in AOCI and the amount that would have been charged using the newly enacted tax rate, excluding any valuation allowance previously charged to income. ASU 2018-02 is effective for the Company beginning in the first quarter of fiscal 2020 , and early adoption is permitted. The Company is evaluating the impact of the adoption of ASU 2018-02 on its Consolidated Financial Statements. In August 2018, the FASB issued ASU 2018-15, Intangibles-Goodwill and Other-Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract (ASU 2018-15). The amendments in this update align the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software (and hosting arrangements that include an internal-use software license). The accounting for the service element of a hosting arrangement that is a service contract is not affected by the amendments in this update. The amendments in this update are effective for interim and annual periods for the Company beginning in the first quarter of fiscal 2021 , with early adoption permitted. The amendments in this update should be applied either retrospectively or prospectively to all implementation costs incurred after the date of adoption. The Company is evaluating the impact of the adoption of ASU 2018-15 on its Consolidated Financial Statements.
Revenue Recognition Policy	Revenue Recognition Policy Revenue is measured as the amount of consideration the Company expects to receive in exchange for the fulfillment of performance obligations. The transaction price of a contract could be reduced by variable consideration including product refunds, returns, volume rebates and discounts in the determination of net sales. The Company primarily relies on historical experience and anticipated future performance to estimate the variable consideration. Revenue is recognized to the extent that it is probable that a significant reversal of revenue will not occur when the contingency is resolved. The Company also accounts for amounts billed to customers for reimbursement of shipping and handling as fulfillment costs by recording these amounts as revenue and accruing the costs when the related revenue is recognized. For most customer contracts, the Company recognizes revenue at a point in time when control of the goods or services is transferred to the customer. For product sales, control is typically deemed to have transferred in accordance with the shipping terms, either at the time of shipment from the plants or distribution centers or the time of delivery to the customers. Revenue is recognized for services upon completion of those services. Due to the customized nature of some of the Company’s products, together with contractual provisions in certain customer contracts that provide the Company with an enforceable right to payment of the transaction price for performance completed to date, revenue is recognized for these contracts over time. For these contracts, the Company recognizes revenue on products by an output measure of production, which fairly depicts the amount of revenue the Company is entitled to. The timing of revenue recognized from these products is slightly accelerated compared to revenue recognized at the point in time of shipment or delivery. Revenue generated from NRE services is also satisfied over time, measured as contractual milestones are achieved as this represents value transferred to the customer. Incremental costs of obtaining a contract with a customer and other costs to fulfill a contract are required to be capitalized. The only such cost material to the Company is sales commission expense. The Company has elected to expense these costs of obtaining a contract as incurred when the related contract period is less than one year. The Company does not pay upfront sales commissions on contracts when the related contract period is greater than one year, thus has not capitalized any amounts as of October 31, 2018 .

Supplemental Balance Sheet In_2

Supplemental Balance Sheet Information (Tables)	3 Months Ended
	Oct. 31, 2018
Assets [Abstract]
Components Of Inventory	The components of net inventories are as follows (in millions): October 31, July 31, Raw materials $ 119.7 $ 128.7 Work in process 41.2 27.4 Finished products 199.6 178.0 Inventories, net $ 360.5 $ 334.1
Components Of Property, Plant and Equipment	The components of net property, plant and equipment are as follows (in millions): October 31, July 31, Land $ 23.7 $ 22.8 Buildings 309.2 310.8 Machinery and equipment 775.1 769.1 Computer software 133.4 132.6 Construction in progress 74.1 64.4 Less: accumulated depreciation (797.6 ) (790.4 ) Property, plant and equipment, net $ 517.9 $ 509.3

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Oct. 31, 2018
Earnings Per Share [Abstract]
Schedule Of Information Necessary To Calculate Basic And Diluted Net Earnings Per Common Share	The following table presents the information necessary to calculate basic and diluted net earnings per share (in millions, except per share amounts): Three Months Ended 2018 2017 Net earnings for basic and diluted earnings per share computation $ 73.8 $ 60.9 Weighted average common shares outstanding: Weighted average common shares – basic 128.8 130.8 Dilutive impact of share-based awards 2.2 1.9 Weighted average common shares – diluted 131.0 132.7 Net earnings per share – basic $ 0.57 $ 0.47 Net earnings per share – diluted $ 0.56 $ 0.46

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	3 Months Ended
	Oct. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Reconciliation Of Goodwill	The following is a reconciliation of goodwill by reportable segment for the three months ended October 31, 2018 (in millions): Engine Products Industrial Products Total Goodwill Balance as of July 31, 2018 $ 84.9 $ 153.5 $ 238.4 Goodwill acquired — 71.0 71.0 Foreign exchange translation (0.3 ) (3.7 ) (4.0 ) Balance as of October 31, 2018 $ 84.6 $ 220.8 $ 305.4
Schedule of Finite-Lived Intangible Assets	The following is a reconciliation of net intangible asset classes for the three months ended October 31, 2018 (in millions): Customer relationships and lists Gross Carrying Amount Accumulated Amortization Net Intangible Assets Balance as of July 31, 2018 $ 63.0 $ (35.7 ) $ 27.3 Intangibles acquired 42.0 — 42.0 Amortization expense — (1.0 ) (1.0 ) Foreign exchange translation (1.7 ) 0.2 (1.5 ) Balance as of October 31, 2018 $ 103.3 $ (36.5 ) $ 66.8 Patents, trademarks and technology Gross Carrying Amount Accumulated Amortization Net Intangible Assets Balance as of July 31, 2018 $ 43.7 $ (35.4 ) $ 8.3 Intangibles acquired 6.8 — 6.8 Amortization expense — (0.4 ) (0.4 ) Foreign exchange translation (1.1 ) 0.9 (0.2 ) Balance as of October 31, 2018 $ 49.4 $ (34.9 ) $ 14.5

Revenue (Tables)

Revenue (Tables)	3 Months Ended
	Oct. 31, 2018
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	Net sales disaggregated by geography based on the location where the customer's order was placed (in millions): Three Months Ended 2018 2017 United States $ 305.1 $ 274.4 Europe, Middle East and Africa 196.3 184.8 Asia Pacific 147.3 132.1 Latin America 52.7 53.5 Total net sales $ 701.4 $ 644.8 Net sales disaggregated by product group (in millions): Three Months Ended 2018 2017 Engine Products segment Off-Road $ 76.2 $ 75.0 On-Road 45.9 33.3 Aftermarket 331.2 309.1 Aerospace and Defense 27.6 24.7 Engine Products segment net sales 480.9 442.1 Industrial Products segment Industrial Filtration Solutions 149.4 134.5 Gas Turbine Systems 25.5 26.3 Special Applications 45.6 41.9 Industrial Products segment net sales 220.5 202.7 Total net sales $ 701.4 $ 644.8
Schedule of New Accounting Pronouncements and Changes in Accounting Principles	The cumulative effect of the adoption on the Company’s August 1, 2018 opening balance sheet is as follows (in millions): Balance at July 31, 2018 Adjustments for ASC 606 Balance at August 1, 2018 Assets Inventories, net $ 334.1 $ (7.3 ) $ 326.8 Prepaid expense and other current assets 52.3 14.0 66.3 Liabilities Other current liabilities 86.6 0.3 86.9 Deferred income taxes 4.2 1.1 5.3 Equity Retained earnings 1,122.1 5.3 1,127.4

Warranty (Tables)

Warranty (Tables)	3 Months Ended
	Oct. 31, 2018
Standard Product Warranty Disclosure [Abstract]
Reconciliation Of Warranty Reserves	The following is a reconciliation of warranty reserves, included in other current liabilities and other long-term liabilities, for the three months ended October 31, 2018 and 2017 (in millions): Three Months Ended 2018 2017 Balance at beginning of period $ 18.9 $ 14.6 Accruals for warranties issued during the reporting period 0.3 0.7 Accruals related to pre-existing warranties (including changes in estimates) (0.4 ) 0.9 Less: settlements made during the period (1.7 ) (0.5 ) Balance at end of period $ 17.1 $ 15.7

Stock Based Compensation (Table

Stock Based Compensation (Tables)	3 Months Ended
	Oct. 31, 2018
Share-based Compensation [Abstract]
Summary Of Stock Option Activity	The following table summarizes stock option activity during the three months ended October 31, 2018 : Options Outstanding Weighted Average Exercise Price Outstanding as of July 31, 2018 6,785,812 $ 34.93 Granted 841,725 $ 59.18 Exercised (743,708 ) $ 24.24 Canceled (14,732 ) $ 44.19 Outstanding as of October 31, 2018 6,869,097 $ 39.03
Summary Of Information Concerning Outstanding And Exercisable Options	The following table summarizes information concerning outstanding and exercisable options as of October 31, 2018 : Range of Exercise Prices Number Outstanding Weighted Average Remaining Contractual Life (Years) Weighted Average Exercise Price of Outstanding Options Number Exercisable Weighted Average Exercise Price of Exercisable Options $ 0.00 to $27.69 390,413 1.10 $ 20.78 390,413 $ 20.78 $27.70 to $32.69 1,394,058 5.18 $ 28.56 1,095,417 $ 28.67 $32.70 to $37.69 1,247,671 3.79 $ 34.44 1,246,838 $ 34.44 $37.70 to $42.69 1,305,734 5.94 $ 40.35 1,218,534 $ 40.21 $42.70 and above 2,531,221 8.76 $ 49.20 631,993 $ 44.40 6,869,097 6.16 $ 39.03 4,583,195 $ 34.80

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	3 Months Ended
	Oct. 31, 2018
Retirement Benefits, Description [Abstract]
Components Of Net Periodic Pension Costs	Net periodic benefit costs for the Company’s pension plans include the following components (in millions): Three Months Ended 2018 2017 Net periodic benefit costs: Service cost $ 1.5 $ 2.0 Interest cost 4.1 3.7 Expected return on assets (6.6 ) (6.5 ) Prior service cost amortization 0.1 0.1 Actuarial loss amortization 1.1 1.1 Net periodic benefit costs $ 0.2 $ 0.4

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Tables)	3 Months Ended
	Oct. 31, 2018
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Schedule Of Changes In Accumulated Other Comprehensive Loss	Changes in accumulated other comprehensive loss by component for the three months ended October 31, 2018 and 2017 are as follows (in millions): Foreign Pension Derivative Total Balance as of July 31, 2018, net of tax $ (66.1 ) $ (82.9 ) $ (0.8 ) $ (149.8 ) Other comprehensive (loss) income before reclassifications and tax (24.2 ) — 1.0 (23.2 ) Tax expense — — (0.3 ) (0.3 ) Other comprehensive (loss) income before reclassifications, net of tax (24.2 ) — 0.7 (23.5 ) Reclassifications, before tax — 2.0 (0.3 ) 1.7 Tax (expense) benefit — (0.4 ) 0.1 (0.3 ) Reclassifications, net of tax — 1.6 (1) (0.2 ) (2) 1.4 Other comprehensive (loss) income, net of tax (24.2 ) 1.6 0.5 (22.1 ) Balance as of October 31, 2018, net of tax $ (90.3 ) $ (81.3 ) $ (0.3 ) $ (171.9 ) Balance as of July 31, 2017, net of tax $ (58.8 ) $ (95.1 ) $ (3.1 ) $ (157.0 ) Other comprehensive (loss) income before reclassifications and tax (5.1 ) — 3.1 (2.0 ) Tax expense — — (1.5 ) (1.5 ) Other comprehensive (loss) income before reclassifications, net of tax (5.1 ) — 1.6 (3.5 ) Reclassifications, before tax — 1.3 1.1 2.4 Tax expense — (0.5 ) (0.4 ) (0.9 ) Reclassifications, net of tax — 0.8 (1) 0.7 (2) 1.5 Other comprehensive (loss) income, net of tax (5.1 ) 0.8 2.3 (2.0 ) Balance as of October 31, 2017, net of tax $ (63.9 ) $ (94.3 ) $ (0.8 ) $ (159.0 ) (1) Primarily includes net amortization of prior service costs and actuarial losses included in net periodic benefit cost (see Note 9) that were reclassified from accumulated other comprehensive loss to operating expenses or cost of sales. (2) Relates to foreign currency cash flow hedges that were reclassified from accumulated other comprehensive loss to other income, net. Changes in accumulated other comprehensive loss by component for the three months ended October 31, 2018 and 2017 are as follows (in millions): Foreign Pension Derivative Total Balance as of July 31, 2018, net of tax $ (66.1 ) $ (82.9 ) $ (0.8 ) $ (149.8 ) Other comprehensive (loss) income before reclassifications and tax (24.2 ) — 1.0 (23.2 ) Tax expense — — (0.3 ) (0.3 ) Other comprehensive (loss) income before reclassifications, net of tax (24.2 ) — 0.7 (23.5 ) Reclassifications, before tax — 2.0 (0.3 ) 1.7 Tax (expense) benefit — (0.4 ) 0.1 (0.3 ) Reclassifications, net of tax — 1.6 (1) (0.2 ) (2) 1.4 Other comprehensive (loss) income, net of tax (24.2 ) 1.6 0.5 (22.1 ) Balance as of October 31, 2018, net of tax $ (90.3 ) $ (81.3 ) $ (0.3 ) $ (171.9 ) Balance as of July 31, 2017, net of tax $ (58.8 ) $ (95.1 ) $ (3.1 ) $ (157.0 ) Other comprehensive (loss) income before reclassifications and tax (5.1 ) — 3.1 (2.0 ) Tax expense — — (1.5 ) (1.5 ) Other comprehensive (loss) income before reclassifications, net of tax (5.1 ) — 1.6 (3.5 ) Reclassifications, before tax — 1.3 1.1 2.4 Tax expense — (0.5 ) (0.4 ) (0.9 ) Reclassifications, net of tax — 0.8 (1) 0.7 (2) 1.5 Other comprehensive (loss) income, net of tax (5.1 ) 0.8 2.3 (2.0 ) Balance as of October 31, 2017, net of tax $ (63.9 ) $ (94.3 ) $ (0.8 ) $ (159.0 ) (1) Primarily includes net amortization of prior service costs and actuarial losses included in net periodic benefit cost (see Note 9) that were reclassified from accumulated other comprehensive loss to operating expenses or cost of sales. (2) Relates to foreign currency cash flow hedges that were reclassified from accumulated other comprehensive loss to other income, net.

Segment Reporting (Tables)

Segment Reporting (Tables)	3 Months Ended
	Oct. 31, 2018
Segment Reporting, Measurement Disclosures [Abstract]
Summary Of Segment Detail	Segment detail is summarized as follows (in millions): Three Months Ended 2018 2017 Net sales Engine Products segment $ 480.9 $ 442.1 Industrial Products segment 220.5 202.7 Total $ 701.4 $ 644.8 Earnings before income taxes Engine Products segment $ 63.9 $ 62.7 Industrial Products segment 36.6 29.4 Corporate and Unallocated (4.1 ) (7.4 ) Total $ 96.4 $ 84.7

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Details) - USD ($) $ in Millions	3 Months Ended
	Oct. 31, 2018	Oct. 31, 2017
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Decrease in operating income	$ (98.7)	$ (89.1)
Increase in other income, net	$ 1.9	0.8
Accounting Standards Update 2017-07
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Decrease in operating income		1.6
Increase in other income, net		$ 1.6

Acquisitions (Details)

Acquisitions (Details) - USD ($) $ in Millions	Oct. 18, 2018	Oct. 31, 2018	Jul. 31, 2018
Business Acquisition [Line Items]
Goodwill		$ 305.4	$ 238.4
Redeemable non-controlling interest		$ 12.9	$ 0
BOFA International LTD
Business Acquisition [Line Items]
Business acquisition, percentage of voting interests acquired	88.00%
Business combination, consideration transferred	$ 98.2
Cash received for working capital adjustment	2.2
Net tangible assets	12.2
Intangibles acquired	48.8
Goodwill	71
Deferred tax liabilities	8.6
Assumed debt	$ 14.3
Remaining voting interest obligated to acquire (as a percentage)	12.00%
Redeemable non-controlling interest	$ 13.1
BOFA International LTD | Minimum
Business Acquisition [Line Items]
Estimated useful lives of intangibles (in years)	5 years
BOFA International LTD | Maximum
Business Acquisition [Line Items]
Estimated useful lives of intangibles (in years)	15 years

Supplemental Balance Sheet In_3

Supplemental Balance Sheet Information (Inventory) (Details) - USD ($) $ in Millions	Oct. 31, 2018	Jul. 31, 2018
Assets [Abstract]
Raw materials	$ 119.7	$ 128.7
Work in process	41.2	27.4
Finished products	199.6	178
Inventories, net	$ 360.5	$ 334.1

Supplemental Balance Sheet In_4

Supplemental Balance Sheet Information (Property, Plant and Equipment) (Details) - USD ($) $ in Millions	Oct. 31, 2018	Jul. 31, 2018
Property, Plant and Equipment [Line Items]
Less: accumulated depreciation	$ (797.6)	$ (790.4)
Property, plant and equipment, net	517.9	509.3
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	23.7	22.8
Buildings
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	309.2	310.8
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	775.1	769.1
Computer software
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	133.4	132.6
Construction in progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 74.1	$ 64.4

Earnings Per Share (Details)

Earnings Per Share (Details) - shares	3 Months Ended
	Oct. 31, 2018	Oct. 31, 2017
Earnings Per Share [Abstract]
Options excluded from the diluted net earnings per share calculation	800,000	0

Earnings Per Share (Information

Earnings Per Share (Information Necessary To Calculate Basic And Diluted Net Earnings Per Common Share) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Oct. 31, 2018	Oct. 31, 2017
Earnings Per Share [Abstract]
Net earnings	$ 73.8	$ 60.9
Weighted average common shares outstanding:
Basic (in shares)	128.8	130.8
Dilutive impact of share based awards (in shares)	2.2	1.9
Diluted (in shares)	131	132.7
Basic earnings (loss) per share (in usd per share)	$ 0.57	$ 0.47
Diluted net earnings (loss) per share (in usd per share)	$ 0.56	$ 0.46

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets (Reconciliation Of Goodwill) (Details) $ in Millions	3 Months Ended
	Oct. 31, 2018USD ($)
Goodwill [Roll Forward]
Beginning balance	$ 238.4
Goodwill acquired	71
Foreign exchange translation	(4)
Ending balance	305.4
Engine Products
Goodwill [Roll Forward]
Beginning balance	84.9
Goodwill acquired	0
Foreign exchange translation	(0.3)
Ending balance	84.6
Industrial Products segment
Goodwill [Roll Forward]
Beginning balance	153.5
Goodwill acquired	71
Foreign exchange translation	(3.7)
Ending balance	$ 220.8

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets (Reconciliation of Intangible Assets) (Details) - USD ($) $ in Millions	3 Months Ended
	Oct. 31, 2018	Jul. 31, 2018	Oct. 31, 2017
Customer relationships and lists
Finite-lived Intangible Assets [Roll Forward]
Gross carrying amount, net intangible assets	$ 103.3	$ 63
Accumulated amortization, net intangible assets	(36.5)	(35.7)
Intangibles acquired	42
Amortization expense	(1)
Foreign currency translation gain (loss), gross carrying amount	(1.7)
Foreign exchange translation, accumulated amortization	0.2
Ending balance, foreign currency translation gain (loss)	(1.5)
Ending balance, net intangible assets	66.8	$ 27.3
Patents, trademarks and technology
Finite-lived Intangible Assets [Roll Forward]
Gross carrying amount, net intangible assets	49.4		$ 43.7
Accumulated amortization, net intangible assets	(34.9)		(35.4)
Intangibles acquired	6.8
Amortization expense	(0.4)
Foreign currency translation gain (loss), gross carrying amount	(1.1)
Foreign exchange translation, accumulated amortization	0.9
Ending balance, foreign currency translation gain (loss)	(0.2)
Ending balance, net intangible assets	$ 14.5		$ 8.3

Revenue - Narrative (Details)

Revenue - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Oct. 31, 2018	Oct. 31, 2017	Jul. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Contract assets	$ 13.1
Contract liabilities	12		$ 10.5
Increase in net sales and cost of sales	238.4	$ 224.3
Calculated under Revenue Guidance in Effect before Topic 606 | Accounting Standards Update 2014-09
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Increase in net sales and cost of sales	$ 5.1

Revenue - Disaggregation of Rev

Revenue - Disaggregation of Revenue by Geographical Area (Details) - USD ($) $ in Millions	3 Months Ended
	Oct. 31, 2018	Oct. 31, 2017
Disaggregation of Revenue [Line Items]
Total net sales	$ 701.4	$ 644.8
United States
Disaggregation of Revenue [Line Items]
Total net sales	305.1	274.4
Europe, Middle East and Africa
Disaggregation of Revenue [Line Items]
Total net sales	196.3	184.8
Asia Pacific
Disaggregation of Revenue [Line Items]
Total net sales	147.3	132.1
Latin America
Disaggregation of Revenue [Line Items]
Total net sales	$ 52.7	$ 53.5

Revenue - Disaggregation of R_2

Revenue - Disaggregation of Revenue by Segment (Details) - USD ($) $ in Millions	3 Months Ended
	Oct. 31, 2018	Oct. 31, 2017
Disaggregation of Revenue [Line Items]
Total net sales	$ 701.4	$ 644.8
Engine Products segment
Disaggregation of Revenue [Line Items]
Total net sales	480.9	442.1
Engine Products segment | Off-Road
Disaggregation of Revenue [Line Items]
Total net sales	76.2	75
Engine Products segment | On-Road
Disaggregation of Revenue [Line Items]
Total net sales	45.9	33.3
Engine Products segment | On-Road
Disaggregation of Revenue [Line Items]
Total net sales	331.2	309.1
Engine Products segment | Aerospace and Defense
Disaggregation of Revenue [Line Items]
Total net sales	27.6	24.7
Industrial Products segment
Disaggregation of Revenue [Line Items]
Total net sales	220.5	202.7
Industrial Products segment | Industrial Filtration Solutions
Disaggregation of Revenue [Line Items]
Total net sales	149.4	134.5
Industrial Products segment | Gas Turbine Systems
Disaggregation of Revenue [Line Items]
Total net sales	25.5	26.3
Industrial Products segment | Special Applications
Disaggregation of Revenue [Line Items]
Total net sales	$ 45.6	$ 41.9

Revenue - Cumulative Effect of

Revenue - Cumulative Effect of Adoption (Details) - USD ($) $ in Millions	Oct. 31, 2018	Jul. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Inventory, Net	$ 360.5	$ 334.1
Prepaid Expense and Other Assets, Current	67.6	52.3
Other current liabilities	183	224.6
Deferred income taxes	12.9	4.2
Retained earnings	$ 1,192.6	1,122.1
Accounting Standards Update 2014-09
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Inventory, Net		326.8
Prepaid Expense and Other Assets, Current		66.3
Other current liabilities		86.9
Deferred income taxes		5.3
Retained earnings		1,127.4
Accounting Standards Update 2014-09 | Previously Reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Inventory, Net		334.1
Prepaid Expense and Other Assets, Current		52.3
Other current liabilities		86.6
Deferred income taxes		4.2
Retained earnings		1,122.1
Accounting Standards Update 2014-09 | Adjustments for ASC 606
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Inventory, Net		(7.3)
Prepaid Expense and Other Assets, Current		14
Other current liabilities		0.3
Deferred income taxes		1.1
Retained earnings		$ 5.3

Warranty (Details)

Warranty (Details) - USD ($) $ in Millions	3 Months Ended
	Oct. 31, 2018	Oct. 31, 2017
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Balance at beginning of period	$ 18.9	$ 14.6
Accruals for warranties issued during the reporting period	0.3	0.7
Accruals related to pre-existing warranties (including changes in estimates)	(0.4)	0.9
Less: settlements made during the period	(1.7)	(0.5)
Balance at end of period	$ 17.1	$ 15.7

Stock Based Compensation (Detai

Stock Based Compensation (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Oct. 31, 2018	Oct. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 4.9	$ 3.8
Tax benefit associated with stock options	1.1	1.2
Total intrinsic value of options exercised	$ 21.7	$ 4.2
Options granted, grant date fair value (in usd per share)	$ 12.43	$ 9.18
Aggregate intrinsic value of options outstanding	$ 90.7
Aggregate intrinsic value of options exercisable	75.7
Unrecognized compensation expense related to non-vested stock options granted	12.6
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 1.7	$ 2.7

Stock Based Compensation (Summa

Stock Based Compensation (Summary Of Stock Option Activity) (Details)	3 Months Ended
	Oct. 31, 2018$ / sharesshares
Options Outstanding
Beginning balance (in shares) | shares	6,785,812
Options granted (in shares) | shares	841,725
Options exercised (in shares) | shares	(743,708)
Options canceled (in shares) | shares	(14,732)
Ending balnace (in shares) | shares	6,869,097
Weighted Average Exercise Price
Weighted Average Exercise Price, Beginning Balance (in usd per share) | $ / shares	$ 34.93
Weighted Average Exercise Price, Granted (in usd per share) | $ / shares	59.18
Weighted Average Exercise Price, Exercised (in usd per share) | $ / shares	24.24
Weighted Average Exercise Price, Canceled (in usd per share) | $ / shares	44.19
Weighted Average Exercise Price, Ending Balance (in usd per share) | $ / shares	$ 39.03

Stock Based Compensation (Sum_2

Stock Based Compensation (Summary Of Information Concerning Outstanding And Exercisable Options) (Details) - $ / shares	3 Months Ended
	Oct. 31, 2018	Jul. 31, 2018
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number Outstanding (in shares)	6,869,097	6,785,812
Weighted Average Remaining Contractual Life (Years)	6 years 1 month 28 days
Weighted Average Exercise Price of Outstanding Options (in usd per share)	$ 39.03
Number Exercisable (in shares)	4,583,195
Weighted Average Exercise Price of Exercisable Options (in usd per share)	$ 34.80
$ 0.00 to $27.69
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, lower range (in usd per share)	0
Range of Exercise Prices, upper range (in usd per share)	$ 27.69
Number Outstanding (in shares)	390,413
Weighted Average Remaining Contractual Life (Years)	1 year 1 month 6 days
Weighted Average Exercise Price of Outstanding Options (in usd per share)	$ 20.78
Number Exercisable (in shares)	390,413
Weighted Average Exercise Price of Exercisable Options (in usd per share)	$ 20.78
$27.70 to $32.69
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, lower range (in usd per share)	27.7
Range of Exercise Prices, upper range (in usd per share)	$ 32.69
Number Outstanding (in shares)	1,394,058
Weighted Average Remaining Contractual Life (Years)	5 years 2 months 5 days
Weighted Average Exercise Price of Outstanding Options (in usd per share)	$ 28.56
Number Exercisable (in shares)	1,095,417
Weighted Average Exercise Price of Exercisable Options (in usd per share)	$ 28.67
$32.70 to $37.69
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, lower range (in usd per share)	32.7
Range of Exercise Prices, upper range (in usd per share)	$ 37.69
Number Outstanding (in shares)	1,247,671
Weighted Average Remaining Contractual Life (Years)	3 years 9 months 15 days
Weighted Average Exercise Price of Outstanding Options (in usd per share)	$ 34.44
Number Exercisable (in shares)	1,246,838
Weighted Average Exercise Price of Exercisable Options (in usd per share)	$ 34.44
$37.70 to $42.69
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, lower range (in usd per share)	37.7
Range of Exercise Prices, upper range (in usd per share)	$ 42.69
Number Outstanding (in shares)	1,305,734
Weighted Average Remaining Contractual Life (Years)	5 years 11 months 9 days
Weighted Average Exercise Price of Outstanding Options (in usd per share)	$ 40.35
Number Exercisable (in shares)	1,218,534
Weighted Average Exercise Price of Exercisable Options (in usd per share)	$ 40.21
$42.70 and above
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, lower range (in usd per share)	$ 42.7
Number Outstanding (in shares)	2,531,221
Weighted Average Remaining Contractual Life (Years)	8 years 9 months 4 days
Weighted Average Exercise Price of Outstanding Options (in usd per share)	$ 49.20
Number Exercisable (in shares)	631,993
Weighted Average Exercise Price of Exercisable Options (in usd per share)	$ 44.40

Employee Benefit Plans (Details

Employee Benefit Plans (Details) $ in Millions	3 Months Ended
	Oct. 31, 2018USD ($)plan
Defined Benefit Plan Disclosure [Line Items]
Number of U.S. plans | plan	2
Annual company retirement contribution in addition to 401 (k) match, percent	3.00%
Pension Plan | United States
Defined Benefit Plan Disclosure [Line Items]
Company contributions	$ 1
Estimated future contributions to pension plans	3.1
Pension Plan | Foreign Plan
Defined Benefit Plan Disclosure [Line Items]
Company contributions	0.3
Additional future contribution towards pension plans for the remainder of Fiscal 2018	$ 1

Employee Benefit Plans (Compone

Employee Benefit Plans (Components Of Net Periodic Pension Costs) (Details) - USD ($) $ in Millions	3 Months Ended
	Oct. 31, 2018	Oct. 31, 2017
Net periodic benefit costs:
Service cost	$ 1.5	$ 2
Interest cost	4.1	3.7
Expected return on assets	(6.6)	(6.5)
Prior service cost amortization	0.1	0.1
Actuarial loss amortization	1.1	1.1
Net periodic benefit costs	$ 0.2	$ 0.4

Income Taxes (Details)

Income Taxes (Details) $ in Millions	Oct. 31, 2018USD ($)
Defined Benefit Plan Disclosure [Line Items]
Unrecognized tax benefits	$ 19.4
Accrued interest and penalties on unrecognized tax benefits	1.9
Unrecognized tax benefits that could potentially expire	$ 1.7

Fair Value Measurements (Detail

Fair Value Measurements (Details) - Long-term Debt [Member] $ in Millions	Oct. 31, 2018USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt instrument, fair value disclosure	$ 258.6
Debt carrying value	$ 275

Shareholders' Equity (Details)

Shareholders' Equity (Details) - USD ($) $ / shares in Units, $ in Millions	Nov. 30, 2018	Oct. 31, 2018	Oct. 31, 2017
Subsequent Event [Line Items]
Number of shares authorized to be repurchased (in shares)		14,000,000
Stock repurchased during the period (in shares)		1,600,000
Stock repurchased during the period		$ 80.9	$ 42.6
Shares with remaining authorization for repurchase under stock repurchase plan (in shares)		2,900,000
Subsequent Event
Subsequent Event [Line Items]
Cash dividend declared per common share (in USD per share)	$ 0.190

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended
	Oct. 31, 2018	Oct. 31, 2017
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	$ 857.8
Ending Balance	854.4
Foreign Currency Translation Adjustment
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	(66.1)	$ (58.8)
Other comprehensive (loss) income before reclassifications and tax	(24.2)	(5.1)
Tax benefit (expense)	0	0
Other comprehensive income (loss) before reclassifications, net of tax	(24.2)	(5.1)
Reclassifications, before tax	0	0
Tax (expense) benefit	0	0
Reclassifications, net of tax	0	0
Other comprehensive (loss) income, net of tax	(24.2)	(5.1)
Ending Balance	(90.3)	(63.9)
Pension Benefits
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	(82.9)	(95.1)
Other comprehensive (loss) income before reclassifications and tax	0	0
Tax benefit (expense)	0	0
Other comprehensive income (loss) before reclassifications, net of tax	0	0
Reclassifications, before tax	2	1.3
Tax (expense) benefit	(0.4)	(0.5)
Reclassifications, net of tax	1.6	0.8
Other comprehensive (loss) income, net of tax	1.6	0.8
Ending Balance	(81.3)	(94.3)
Derivative Financial Instruments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	(0.8)	(3.1)
Other comprehensive (loss) income before reclassifications and tax	1	3.1
Tax benefit (expense)	(0.3)	(1.5)
Other comprehensive income (loss) before reclassifications, net of tax	0.7	1.6
Reclassifications, before tax	(0.3)	1.1
Tax (expense) benefit	0.1	(0.4)
Reclassifications, net of tax	(0.2)	0.7
Other comprehensive (loss) income, net of tax	0.5	2.3
Ending Balance	(0.3)	(0.8)
Total
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	(149.8)	(157)
Other comprehensive (loss) income before reclassifications and tax	(23.2)	(2)
Tax benefit (expense)	(0.3)	(1.5)
Other comprehensive income (loss) before reclassifications, net of tax	(23.5)	(3.5)
Reclassifications, before tax	1.7	2.4
Tax (expense) benefit	(0.3)	(0.9)
Reclassifications, net of tax	1.4	1.5
Other comprehensive (loss) income, net of tax	(22.1)	(2)
Ending Balance	$ (171.9)	$ (159)

Guarantees (Details)

Guarantees (Details) - USD ($)	3 Months Ended
	Oct. 31, 2018	Oct. 31, 2017	Jul. 31, 2018
Guarantor Obligations [Line Items]
Net sales	$ 701,400,000	$ 644,800,000
Contingent liability for standby letters of credit, issued and outstanding	11,200,000	8,200,000
Amount drawn upon letters of credit	0		$ 0
Advanced Filtration Systems, Inc.
Guarantor Obligations [Line Items]
Outstanding debt of joint venture	35,800,000
Joint venture investment earnings (loss)	(300,000)	100,000
Royalty | Advanced Filtration Systems, Inc.
Guarantor Obligations [Line Items]
Net sales	$ 1,700,000	$ 1,900,000

Segment Reporting (Details)

Segment Reporting (Details)	3 Months Ended
	Oct. 31, 2018segment
Segment Reporting, Measurement Disclosures [Abstract]
Number of reportable segments	2

Segment Reporting (Summary Of S

Segment Reporting (Summary Of Segment Detail) (Details) - USD ($) $ in Millions	3 Months Ended
	Oct. 31, 2018	Oct. 31, 2017
Segment Reporting Information [Line Items]
Net sales	$ 701.4	$ 644.8
Earnings before income taxes	96.4	84.7
Engine Products segment
Segment Reporting Information [Line Items]
Net sales	480.9	442.1
Industrial Products segment
Segment Reporting Information [Line Items]
Net sales	220.5	202.7
Operating Segments | Engine Products segment
Segment Reporting Information [Line Items]
Earnings before income taxes	63.9	62.7
Operating Segments | Industrial Products segment
Segment Reporting Information [Line Items]
Earnings before income taxes	36.6	29.4
Corporate, Non-Segment | Corporate and Unallocated
Segment Reporting Information [Line Items]
Earnings before income taxes	$ (4.1)	$ (7.4)