Zurn Elkay Water Solutions (ZWS) 10-K 14 May 18 2018 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($) $ in Billions	12 Months Ended
	Mar. 31, 2018	May 10, 2018	Sep. 30, 2017
Document and Entity Information [Abstract]
Entity Registrant Name	Rexnord Corp
Entity Central Index Key	1,439,288
Document Type	10-K
Document Period End Date	Mar. 31, 2018
Amendment Flag	false
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	FY
Current Fiscal Year End Date	--03-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding (in shares)		104,201,153
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 2.6

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Millions	Mar. 31, 2018	Mar. 31, 2017
Current assets:
Cash and cash equivalents	$ 217.6	$ 490.1
Receivables, net	373.2	322.9
Inventories	344.8	314.9
Income tax receivable	19.1	10.9
Other current assets	43	39.3
Total current assets	997.7	1,178.1
Property, plant and equipment, net	456.4	400.9
Intangible assets, net	577.5	558.6
Goodwill	1,276.1	1,318.2
Other assets	116	83.5
Total assets	3,423.7	3,539.3
Current liabilities:
Current maturities of debt	3.9	16.5
Trade payables	226	197.8
Compensation and benefits	70	54.3
Current portion of pension and postretirement benefit obligations	4.5	4.3
Other current liabilities	149.8	127.4
Total current liabilities	454.2	400.3
Long-term debt	1,352.1	1,606.2
Pension and postretirement benefit obligations	169.2	174.4
Deferred income taxes	156.6	208.8
Other liabilities	78.8	79
Total liabilities	2,210.9	2,468.7
Stockholders' equity:
Common stock, $0.01 par value; 200,000,000 shares authorized; shares issued and outstanding: 104,179,037 at March 31, 2018 and 103,600,540 at March 31, 2017	1	1
Preferred stock, $0.01 par value; 10,000,000 shares authorized; shares of 5.75% Series A Mandatory Convertible Preferred Stock issued and outstanding: 402,500 at March 31, 2018 and 2017	0	0
Additional paid-in capital	1,277.8	1,262.1
Retained earnings (deficit)	8	(55.5)
Accumulated other comprehensive loss	(74.1)	(137)
Total Rexnord stockholders' equity	1,212.7	1,070.6
Non-controlling interest	0.1	0
Total stockholders' equity	1,212.8	1,070.6
Total liabilities and stockholders' equity	$ 3,423.7	$ 3,539.3

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Common Stock
Par value (in dollars per share)	$ 0.01	$ 0.01
Shares authorized (in shares)	200,000,000	200,000,000
Shares issued (in shares)	104,179,037	103,600,540
Shares outstanding (in shares)	104,179,037	103,600,540
Redeemable Convertible Preferred Stock
Preferred Stock
Par value (in dollars per share)	$ 0.01	$ 0.01
Shares authorized (in shares)	10,000,000	10,000,000
Shares issued (in shares)	402,500	402,500
Shares outstanding (in shares)	402,500	402,500
Dividend rate, percentage	5.75%

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Millions	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Income Statement [Abstract]
Net sales	$ 2,066	$ 1,918.2	$ 1,923.8
Cost of sales	1,309.1	1,250.2	1,258.6
Gross profit	756.9	668	665.2
Selling, general and administrative expenses	449.5	413.2	385.7
Restructuring and other similar charges	18.8	31.6	34.9
Actuarial (gain) loss on pension and postretirement benefit obligations	(3.3)	(2.6)	12.9
Amortization of intangible assets	33.6	42.1	57.4
Goodwill impairment	111.2	0	0
Income (loss) from operations	147.1	183.7	174.3
Non-operating (expense) income:
Interest expense, net	(75.6)	(88.7)	(91.4)
Loss on the extinguishment of debt	(11.9)	(7.8)	0
Other (expense) income, net	(3.1)	(5.2)	3.1
Income from continuing operations before income taxes	56.5	82	86
(Benefit) provision for income taxes	(19.5)	7.9	17.1
Net income from continuing operations	76	74.1	68.9
Loss from discontinued operations, net of tax	0	0	(1.4)
Net income (loss)	76	74.1	67.5
Non-controlling interest income (loss)	0.1	0	(0.4)
Net income (loss) attributable to Rexnord	75.9	74.1	67.9
Dividends on preferred stock	(23.2)	(7.3)	0
Net income (loss) attributable to Rexnord common stockholders	$ 52.7	$ 66.8	$ 67.9
Basic net income (loss) per share attributable to Rexnord common stockholders:
Continuing operations (in dollars per share)	$ 0.51	$ 0.65	$ 0.69
Discontinued operations (in dollars per share)	0	0	(0.01)
Net income attributable to Rexnord common shareholders (in dollars per share)	0.51	0.65	0.67
Diluted income (loss) per share attributable to Rexnord common stockholders:
Continuing operations (in dollars per share)	0.50	0.64	0.67
Discontinued operations (in dollars per share)	0	0	(0.01)
Net income attributable to Rexnord common shareholders (in dollars per share)	$ 0.50	$ 0.64	$ 0.66
Weighted-average number of common shares outstanding (in thousands):
Basic (in shares)	103,889	102,753	100,841
Effect of dilutive stock options (in shares)	2,110	2,031	2,469
Diluted (in shares)	105,999	104,784	103,310

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Statement of Comprehensive Income [Abstract]
Net income attributable to Rexnord	$ 75.9	$ 74.1	$ 67.9
Other comprehensive income (loss):
Foreign currency translation adjustments	57.1	(12.8)	(10)
Unrealized gain (loss) on interest rate derivatives, net of tax	5.8	7.4	(4.3)
Change in pension and other postretirement defined benefit plans, net of tax	0	7.4	5.5
Other comprehensive income (loss), net of tax	62.9	2	(8.8)
Non-controlling interest income (loss)	0.1	0	(0.4)
Total comprehensive income	$ 138.9	$ 76.1	$ 58.7

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($) $ in Millions		Total	Water Management	Redeemable Convertible Preferred Stock	Common Stock	Preferred Stock	[1]	Additional Paid-In Capital	Retained (Deficit) Earnings	Accumulated Other Comprehensive (Loss) Income	Treasury Stock		Non-controlling interest	[3]
Beginning balance at Mar. 31, 2015		$ 552.7			$ 1	$ 0		$ 885.9	$ (197.5)	$ (130.2)	$ (6.3)	[2]	$ (0.2)
Comprehensive income (loss):
Net income		67.5							67.9				(0.4)
Foreign currency translation adjustments		(10)								(10)
Unrealized loss on interest rate derivatives, net of income tax benefit		(4.3)								(4.3)
Change in pension and other post retirement defined benefit plans, net of income tax expense (benefit)		5.5								5.5
Total comprehensive income (loss)		58.7							67.9	(8.8)			(0.4)
Stock-based compensation expense		7.5						7.5
Common stock repurchased and canceled	[4]	(40)						(40)
Exercise of stock options		5.1						5.1
Cancellation of treasury stock	[2]							(6.3)			$ 6.3
Tax benefit on stock option exercises		4						4
Ending balance at Mar. 31, 2016		$ 588			1	0		856.2	(129.6)	(139)			(0.6)
Comprehensive income (loss):
Treasury stock acquired, average price per share (in dollars per share)		$ 25.76
Net income		$ 74.1							74.1
Foreign currency translation adjustments		(12.8)								(12.8)
Unrealized loss on interest rate derivatives, net of income tax benefit		7.4								7.4
Change in pension and other post retirement defined benefit plans, net of income tax expense (benefit)		7.4								7.4
Total comprehensive income (loss)		76.1							74.1	2
Stock-based compensation expense		13.4						13.4
Exercise of stock options		11						11
Acquisition of non-controlling interest		(0.3)						(0.9)					0.6
Preferred stock issuance, net	[1]	389.7						389.7
Preferred stock dividends		(7.3)						(7.3)
Ending balance at Mar. 31, 2017		1,070.6			1	0		1,262.1	(55.5)	(137)
Comprehensive income (loss):
Purchase price, net of cash acquired		$ 213.7
Shares issued (in shares)				402,500
Par value (in dollars per share)				$ 0.01
Non-controlling interest percentage		49.00%
Net income		$ 76							75.9				0.1
Foreign currency translation adjustments		57.1								57.1
Unrealized loss on interest rate derivatives, net of income tax benefit		5.8								5.8
Total comprehensive income (loss)		138.9							75.9	62.9			0.1
Stock-based compensation expense		20.5						20.5
Exercise of stock options		6						6
Preferred stock dividends		(23.2)						(10.8)	(12.4)
Ending balance at Mar. 31, 2018		1,212.8			$ 1	$ 0		$ 1,277.8	$ 8	$ (74.1)			$ 0.1
Comprehensive income (loss):
Dividend rate, percentage				5.75%
Purchase price, net of cash acquired		$ 173.6	$ 0.3
Shares issued (in shares)				402,500
Par value (in dollars per share)				$ 0.01
Non-controlling interest percentage		30.00%
[1]	On December 7, 2016, the Company issued 8,050,000 depositary shares, each of which represents a 1/20th interest in a share of 5.75% Series A Mandatory Convertible Preferred Stock (the "Series A Preferred Stock"), for an offering price of $50 per depository share. Shares of Series A Preferred Stock have a par value of $0.01 per share.
[2]	During fiscal 2016, the Company canceled all outstanding shares held in treasury stock and returned such shares to the status of authorized but unissued shares.
[3]	epresents a 49% non-controlling interest in a Water Management joint venture through fiscal 2017. During the first quarter of fiscal 2017, the Company acquired the remaining non-controlling interest for a cash purchase price of $0.3 million. During fiscal 2018, represents a 30% non-controlling interest in two Process & Motion Control controlled subsidiaries.
[4]	During fiscal 2016, the Company repurchased and canceled 1,552,500 shares of common stock at a total cost of $40.0 million at an average price of $25.76. Refer to Note 19 for additional information regarding the stock repurchase program.

Consolidated Statements of Sto7

Consolidated Statements of Stockholders' Equity (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Statement of Stockholders' Equity [Abstract]
Unrealized gain (loss) on interest rate derivatives, income tax expense (benefit)	$ (3.9)	$ (4.3)	$ (2.6)
Change in pension and other postretirement defined benefit plans - income tax (expense) benefit	$ (2.3)	$ (4.4)	$ (3)

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Operating activities
Net income	$ 76	$ 74.1	$ 67.5
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation	56.1	63.3	58
Amortization of intangible assets	33.6	42.1	57.4
Amortization of deferred financing costs	1.9	2.4	2
Non-cash goodwill impairment	111.2	0	0
Non-cash asset impairment	0.8	1.5	17.5
Loss on dispositions of property, plant and equipment	0.9	0.2	0.6
Deferred income taxes	(77.5)	(18.4)	(13.9)
Non-cash charge for disposal of discontinued operations	0	0	1.5
Actuarial (gain) loss on pension and postretirement benefit obligations	(3.3)	(2.6)	12.9
Other non-cash charges (credits)	2.3	(1)	9.6
Loss on extinguishment of debt	11.9	7.8	0
Stock-based compensation expense	20.5	13.4	7.5
Changes in operating assets and liabilities:
Receivables	(31)	(5.8)	1.5
Inventories	11.5	22.5	37.7
Other assets	(16.6)	(9.2)	7.5
Accounts payable	13	(5.3)	(32.4)
Accruals and other	17.2	10.1	(15.9)
Cash provided by operating activities	228.5	195.1	219
Investing activities
Expenditures for property, plant and equipment	(40.7)	(54.5)	(52.1)
Acquisitions, net of cash acquired	(173.6)	(213.7)
Acquisitions, cash acquired			1.1
Proceeds from dispositions of property, plant and equipment	5.5	4.2	5.8
Cash used for investing activities	(208.8)	(264)	(45.2)
Financing activities
Proceeds from borrowings of debt	1,529.8	1,590.3	0.9
Repayments of long-term debt	(1,791.9)	(1,885.8)	(19.5)
Proceeds from borrowings of short-term debt	0	16.1	0
Repayments of short-term debt	(24.3)	(19.5)	(5.9)
Payment of debt issuance costs	(11)	(11.8)	(0.9)
Deferred acquisition payment	0	(5.7)	0
Proceeds from issuance of preferred stock, net of direct offering costs	0	389.7	0
Payment of preferred stock dividends	(23.2)	(4.4)	0
Proceeds from exercise of stock options	6	11	5.1
Repurchase of common stock	0	0	(40)
Proceeds from financing lease obligations	5.8	0	0
Excess tax benefit on exercise of stock options	0	0	4
Cash (used for) provided by financing activities	(308.8)	79.9	(56.3)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	16.6	(5.5)	(3.2)
(Decrease) increase in cash, cash equivalents and restricted cash	(272.5)	5.5	114.3
Cash, cash equivalents and restricted cash at beginning of period	490.1	484.6	370.3
Cash, cash equivalents and restricted cash at end of period	$ 217.6	$ 490.1	$ 484.6

Basis of Presentation and Descr

Basis of Presentation and Description of Business	12 Months Ended
	Mar. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation and Description of Business	Basis of Presentation and Description of Business The consolidated financial statements included herein have been prepared by Rexnord Corporation (“Rexnord” or the "Company"), in accordance with accounting principles generally accepted in the United States ("GAAP") pursuant to the rules and regulations of the Securities and Exchange Commission. The consolidated financial statements include the accounts of the Company and its subsidiaries. All intercompany balances and transactions have been eliminated in consolidation. In the opinion of management, the consolidated financial statements include all adjustments necessary for a fair presentation of the financial position and the results of operations for the periods presented. The Company Rexnord is a growth-oriented, multi-platform industrial company with what it believes to be leading market shares and highly-trusted brands that serve a diverse array of global end markets. The Company's heritage of innovation and specification have allowed it to provide highly-engineered, mission-critical solutions to customers for decades and affords the privilege of having long-term, valued relationships with market leaders. The Company operates in a disciplined way and its Rexnord Business System (“RBS”) is the operating philosophy. Grounded in the spirit of continuous improvement, RBS creates a scalable, process-based framework that focuses on driving superior customer satisfaction and financial results by targeting world-class operating performance throughout all aspects of its business. The Company currently operates its business in two platforms - Process & Motion Control and Water Management. The Process & Motion Control platform designs, manufactures, markets and services a comprehensive range of specified, highly-engineered mechanical components used within complex systems where our customers' reliability requirements and costs of failure or downtime are high. The Process & Motion Control portfolio includes motion control products, shaft management products, aerospace components, and related value-added services. The Water Management platform designs, procures, manufactures, and markets products that provide and enhance water quality, safety, flow control and conservation. The Water Management product portfolio includes professional grade water control and safety, water distribution and drainage, finish plumbing, and site works products for primarily nonresidential buildings and flow control products for water and wastewater treatment infrastructure markets.

Significant Accounting Policies

Significant Accounting Policies	12 Months Ended
	Mar. 31, 2018
Accounting Policies [Abstract]
Significant Accounting Policies	Significant Accounting Policies Use of Estimates The preparation of financial statements in accordance with GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could differ from those estimates. Reclassifications Certain prior year amounts have been reclassified to conform to the fiscal 2018 presentation. Revenue Recognition Net sales are recorded upon transfer of title and risk of product loss to the customer. Net sales relating to any particular shipment are based upon the amount invoiced for the delivered goods less estimated future rebate payments and sales returns which are based upon the Company’s historical experience. Revisions to these estimates are recorded in the period in which the facts that give rise to the revision become known; historically, revisions to estimates have not been significant. Other than a standard product warranty, there are no other significant post-shipment obligations. The Company classifies shipping and handling fees billed to customers as net sales and the corresponding costs are classified as cost of sales in the consolidated statements of operations. Stock-Based Compensation The Company accounts for stock based compensation in accordance with Accounting Standards Codification ("ASC") 718, Accounting for Stock Compensation ("ASC 718"). ASC 718 requires compensation costs related to stock-based payment transactions to be recognized in the financial statements. Generally, compensation cost is measured based on the grant-date fair value of the equity instruments issued. Compensation cost is recognized over the requisite service period, generally as the awards vest. See further discussion of the Company’s equity plans in Note 15 , Stock-Based Compensation. Cash and Cash Equivalents The Company considers all highly liquid investments with a maturity of three months or less to be cash and cash equivalents. Receivables Receivables are stated net of allowances for doubtful accounts of $12.7 million at March 31, 2018 and $10.6 million at March 31, 2017 . The Company evaluates the collectability of its receivables and establishes the allowance for doubtful accounts based on a combination of specific customer circumstances and historical write-off experience. Credit is extended to customers based upon an evaluation of their financial position. Generally, advance payment is not required. Allowances for doubtful accounts established are recorded within Selling, general and administrative expenses within the consolidated statements of operations. Significant Customers The Company’s largest customer accounted for 8.2% , 8.4% and 8.4% of consolidated net sales for the years ended March 31, 2018 , 2017 and 2016 , respectively. Receivables related to this customer at March 31, 2018 and 2017 were $8.5 million and $12.3 million , respectively. Inventories Inventories are comprised of material, direct labor and manufacturing overhead, and are stated at the lower of cost or market. Market is determined based on estimated net realizable values. The Company’s total inventories valued using the “last-in, first-out” (LIFO) method was 51% and 60% at March 31, 2018 and 2017 , respectively. All remaining inventories are valued using the “first-in, first-out” (FIFO) method. In some cases, the Company has determined a certain portion of inventories are excess or obsolete. In those cases, the Company writes down the value of those inventories to their net realizable value based upon assumptions about future demand and market conditions. If actual market conditions are less favorable than those projected by management, adjustments to established inventory reserves may be required. The total write-down of inventories charged to expense was $7.4 million , $7.6 million and $9.5 million , during fiscal 2018 , 2017 and 2016 , respectively. Property, Plant and Equipment Property, plant and equipment are initially stated at cost. Depreciation is provided using the straight-line method over 10 to 30 years for buildings and improvements, 5 to 10 years for machinery and equipment and 3 to 5 years for computer hardware and software. Where appropriate, the depreciable lives of certain assets may be adjusted to reflect a change in the use of those assets, or depreciation may be accelerated in the case of an eventual asset disposal. The Company recognized accelerated depreciation of $2.3 million , $9.6 million , and $2.5 million during fiscal 2018 , 2017 , and 2016 , respectively. Accelerated depreciation is recorded within Cost of sales in the consolidated statements of operations. Maintenance and repair costs are expensed as incurred. Goodwill and Intangible Assets Intangible assets consist of acquired trademarks and tradenames, customer relationships (including distribution network) and patents. The customer relationships, patents, and certain tradenames are being amortized using the straight-line method over their estimated useful lives of 7 to 20 years, 3 to 15 years, and 3 to 15 years, respectively. Where appropriate, the lives of certain intangible assets may be adjusted to reflect a change in the use of those assets, or amortization may be accelerated in the case of a known intangible asset discontinuation. Goodwill, trademarks and certain tradenames have indefinite lives and are not amortized. However, the goodwill and intangible assets are tested annually for impairment, and may be tested more frequently if any triggering events occur that would reduce the recoverability of the asset. The Company performs its impairment test by comparing the fair value of a reporting unit, utilizing both an income valuation model (discounted cash flow) and market approach (guideline public company comparables), with its carrying amount. If the carrying amount exceeds the fair value of the reporting unit, an impairment charge is recognized for the amount by which the carrying amount exceeds the reporting unit's fair value. In connection with the anticipated divestiture of the VAG operations, the Company recognized a non-cash impairment charge of $111.2 million , representing the entire balance of goodwill within the VAG reporting unit, as of March 31, 2018. See Note 9 Goodwill and Intangible Assets for additional information. Impairment of Long-Lived Assets The carrying value of long-lived assets, including amortizable intangible assets and tangible fixed assets, are evaluated for impairment whenever events or changes in circumstances indicate that the related carrying amounts may not be recoverable. Impairment of amortizable intangible assets and tangible fixed assets is generally determined by comparing projected undiscounted cash flows to be generated by the asset, or group of assets, to its carrying value. If impairment is identified, a loss is recorded equal to the excess of the asset's net book value over its fair value, and the cost basis is adjusted accordingly. The Company recognized impairment charges in the amount of $0.8 million , $1.5 million and $17.5 million in fiscal 2018, 2017 and 2016, respectively. The impairment was determined utilizing Level 3 inputs within the Fair Value hierarchy, and the Company reviewed and considered input from outside specialists, when appropriate. Refer to Note 13 Fair Value Measurements for additional information. Actual results could vary from these estimates. Product Warranty The Company offers warranties on the sales of certain of its products and records an accrual for estimated future claims. Such accruals are based upon historical experience and management’s estimate of the level of future claims. The following table presents changes in the Company’s product warranty liability during each of the periods presented (in millions): Year Ended March 31, 2018 Year Ended March 31, 2017 Year Ended March 31, 2016 Balance at beginning of period $ 7.5 $ 6.8 $ 6.8 Acquired obligations 1.4 0.4 — Charged to operations 4.6 3.9 2.8 Claims settled (4.6 ) (3.6 ) (2.8 ) Balance at end of period $ 8.9 $ 7.5 $ 6.8 Income Taxes The Company accounts for income taxes in accordance with ASC 740, Accounting for Income Taxes (“ASC 740”) . Deferred income taxes are provided for future tax effects attributable to temporary differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases, net operating losses, tax credits and other applicable carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be actually paid or recovered. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in the results of continuing operations in the period that includes the date of enactment. The Company regularly reviews its deferred tax assets for recoverability and provides a valuation allowance against its deferred tax assets if, based upon consideration of all positive and negative evidence, the Company determines that it is more-likely-than-not that a portion or all of the deferred tax assets will ultimately not be realized in future tax periods. Such positive and negative evidence would include review of historical earnings and losses, anticipated future earnings, the time period over which the temporary differences and carryforwards are anticipated to reverse and implementation of feasible, prudent tax planning strategies. The Company is subject to income taxes in the United States and numerous foreign jurisdictions. Significant judgment is required in determining the Company’s worldwide provision for income taxes and recording the related deferred tax assets and liabilities. In the ordinary course of the Company’s business, there is inherent uncertainty in quantifying the ultimate tax outcome of all of the numerous transactions and required calculations relating to the Company’s tax positions. Accruals for unrecognized tax benefits are provided for in accordance with the requirements of ASC 740 . An unrecognized tax benefit represents the difference between the recognition of benefits related to uncertain tax positions for income tax reporting purposes and financial reporting purposes. The Company has established a reserve for interest and penalties, as applicable, for uncertain tax positions and it is recorded as a component of the overall income tax provision. The Company is subject to periodic income tax examinations by domestic and foreign income tax authorities. Although the outcome of income tax examinations is always uncertain, the Company believes that it has appropriate support for the positions taken on its income tax returns and has adequately provided for potential income tax assessments. Nonetheless, the amounts ultimately settled relating to issues raised by the taxing authorities may differ materially from the amounts accrued for each year. See Note 17 Income Taxes for additional information. Per Share Data Basic net income (loss) per share from continuing and discontinued operations attributable to Rexnord common stockholders is computed by dividing net income from continuing operations and loss from discontinued operations attributable to Rexnord common stockholders, respectively, by the corresponding weighted average number of common shares outstanding for the period. Diluted net income (loss) per share from continuing and discontinued operations attributable to Rexnord common stockholders is computed based on the weighted average number of common shares outstanding, increased by the number of incremental shares that would have been outstanding if the potential dilutive shares were issued through the exercise of outstanding stock options to purchase common shares, except when the effect would be anti-dilutive. The computation for diluted net income per share for the fiscal years ended March 31, 2018 , 2017 and 2016 excludes 2.6 million, 4.6 million and 2.9 million shares due to their anti-dilutive effects, respectively. Additionally, following the issuance of the 5.75% Series A Mandatory Convertible Preferred Stock ("Series A Preferred Stock") in the third quarter of fiscal 2017, the Company’s diluted net income per share is computed using the “if-converted” method. The "if-converted" method is utilized only when such calculation is dilutive to earnings per share using the treasury stock method. Under the “if-converted” method, diluted net income per share is calculated under the assumption that the shares of Series A Preferred Stock have been converted into shares of the Company’s common stock as of the beginning of the respective period, and therefore no dividends are provided to holders of the Series A Preferred Stock. During the fiscal years ended March 31, 2018 and March 31, 2017, the computation of diluted net income per share does not include shares of preferred stock that are convertible into a weighted average of 16.0 million and 5.8 million shares of common stock, respectively, due to their anti-dilutive effects. The following table presents the basis for income per share computations (in millions, except share amounts, which are in thousands): Year Ended March 31, 2018 March 31, 2017 March 31, 2016 Numerator: Net income from continuing operations $ 76.0 $ 74.1 $ 68.9 Less: Non-controlling interest income (loss) 0.1 — (0.4 ) Less: Dividends on preferred stock (23.2 ) (7.3 ) — Income from continuing operations attributable to Rexnord common stockholders 52.7 66.8 69.3 Loss from discontinued operations — — (1.4 ) Net income attributable to Rexnord common stockholders $ 52.7 $ 66.8 $ 67.9 Denominator: Weighted average common shares outstanding, basic 103,889 102,753 100,841 Effect of dilutive common shares equivalents 2,110 2,031 2,469 Weighted average common shares outstanding, dilutive 105,999 104,784 103,310 Accumulated Other Comprehensive Loss The changes in accumulated other comprehensive loss, net of tax, for the fiscal years ending March 31, 2018 , 2017 and 2016 are as follows (in millions): Interest Rate Derivatives Foreign Currency Translation Pension and Postretirement Plans Total Balance at March 31, 2015 $ (12.6 ) $ (76.5 ) $ (41.1 ) $ (130.2 ) Other comprehensive (loss) income before reclassifications (4.3 ) (10.0 ) 6.7 (7.6 ) Amounts reclassified from accumulated other comprehensive loss — — (1.2 ) (1.2 ) Net current period other comprehensive (loss) income (4.3 ) (10.0 ) 5.5 (8.8 ) Balance at March 31, 2016 $ (16.9 ) $ (86.5 ) $ (35.6 ) $ (139.0 ) Other comprehensive income (loss) before reclassifications 1.1 (12.8 ) 9.2 (2.5 ) Amounts reclassified from accumulated other comprehensive income (loss) 6.3 — (1.8 ) 4.5 Net current period other comprehensive income (loss) 7.4 (12.8 ) 7.4 2.0 Balance at March 31, 2017 $ (9.5 ) $ (99.3 ) $ (28.2 ) $ (137.0 ) Other comprehensive income before reclassifications — 57.1 1.4 58.5 Amounts reclassified from accumulated other comprehensive income (loss) 5.8 — (1.4 ) 4.4 Net current period other comprehensive income 5.8 57.1 — 62.9 Balance at March 31, 2018 $ (3.7 ) $ (42.2 ) $ (28.2 ) $ (74.1 ) The following table summarizes the amounts reclassified from accumulated other comprehensive loss to net income during the fiscal years ending March 31, 2018 , 2017 and 2016 (in millions): Pension and postretirement plans Year Ending March 31, 2018 Year Ending March 31, 2017 Year Ending March 31, 2016 Income Statement Line Item Amortization of prior service credit $ (1.9 ) $ (1.9 ) $ (1.9 ) Selling, general and administrative expenses Curtailment (0.3 ) (1.0 ) — Actuarial (gain) loss on pension and postretirement benefit obligations Provision for income taxes 0.8 1.1 0.7 Total, net of income taxes $ (1.4 ) $ (1.8 ) $ (1.2 ) Interest rate derivatives Net realized losses on interest rate derivatives $ 9.7 $ 10.2 $ — Interest expense, net Benefit for income taxes (3.9 ) (3.9 ) — Total, net of income taxes $ 5.8 $ 6.3 $ — Derivative Financial Instruments The Company is exposed to certain financial risks relating to fluctuations in foreign currency exchange rates and interest rates. The Company selectively uses foreign currency forward contracts and interest rate derivatives to manage its foreign currency and interest rate risks. All hedging transactions are authorized and executed pursuant to defined policies and procedures which prohibit the use of financial instruments for speculative purposes. For the derivative instruments designated and qualifying as effective hedging instruments under ASC 815, Accounting for Derivative Instruments and Hedging Activities ("ASC 815") , the changes in the fair value of the effective portion of the instrument are recognized in accumulated other comprehensive loss whereas any changes in the fair value of a derivative instrument that is not designated or does not qualify as an effective hedge are recorded in other non-operating expense. See Note 12 Derivative Financial Instruments for further information regarding the classification and accounting of such instruments. Financial Instrument Counterparties The Company is exposed to credit losses in the event of non-performance by counterparties to its financial instruments. The Company anticipates, however, that counterparties will be able to fully satisfy their obligations under these instruments. The Company places cash and temporary investments and foreign currency and interest rate swap and cap contracts with various high-quality financial institutions. Although the Company does not obtain collateral or other security to support these financial instruments, it does periodically evaluate the credit-worthiness of each of its counterparties. Foreign Currency Translation Assets and liabilities of subsidiaries operating outside of the United States with a functional currency other than the U.S. dollar are translated into U.S. dollars using exchange rates at the end of the respective period. Revenues and expenses of such entities are translated at average exchange rates in effect during the respective period. Foreign currency translation adjustments are included as a component of accumulated other comprehensive loss. The Company periodically enters into foreign currency forward contracts to mitigate foreign currency volatility on certain intercompany and external cash flows expected to occur. See Note 12 Derivative Financial Instruments for additional information. Currency transaction losses are included in other expense (income), net in the consolidated statements of operations and totaled $3.4 million , $3.7 million and $3.0 million for the years ended March 31, 2018 , 2017 and 2016 , respectively. Advertising Costs Advertising costs are charged to selling, general and administrative expenses on the consolidated statements of operations as incurred and amounted to $11.5 million , $10.6 million , and $9.2 million for the years ended March 31, 2018 , 2017 and 2016 , respectively. Research, Development and Engineering Costs Research, development and engineering costs are charged to selling, general and administrative expenses on the consolidated statements of operations as incurred and for the years ended March 31, 2018 , 2017 and 2016 amounted to the following (in millions): Year Ended March 31, 2018 Year Ended March 31, 2017 Year Ended March 31, 2016 Research and development costs $ 14.0 $ 11.1 $ 12.4 Engineering costs 25.4 27.2 24.8 Total $ 39.4 $ 38.3 $ 37.2 Concentrations of Credit Risk Financial instruments that potentially subject the Company to significant concentrations of credit risk consist of cash and temporary investments, forward currency contracts and trade accounts receivable. Recent Accounting Pronouncements In February 2018, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income ("ASU 2018-02"), which gives entities the option to reclassify from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the Tax Cuts and Jobs Act. Consequently, the amendments eliminate the stranded tax effects resulting from the Tax Cuts and Jobs Act and will improve the usefulness of information reported to financial statement users. ASU 2018-02 if effective for the Company's fiscal 2020 and interim periods included therein, and is to be applied either in the period of adoption or on a retrospective basis to each period affected. The Company is currently evaluating the impact of this guidance and has not determined whether it will elect to reclassify stranded amounts; however, the adoption of ASU 2018-02 is not expected to have a material effect on its consolidated financial statements. In August 2017, the FASB issued ASU 2017-12, Derivatives and Hedging - Targeted Improvements to Accounting for Hedging Activities ("ASU 2017-12"), which expands and refines hedge accounting for both non-financial and financial risk components and aligns the recognition and presentation of the effects of the hedging instrument and the hedged item in the financial statements. ASU 2017-12 is effective for the beginning of the Company's fiscal 2020, with early adoption permitted, and must be applied prospectively. The Company is currently evaluating the impact this guidance will have on its consolidated financial statements upon adoption. In March 2017, the FASB issued ASU No. 2017-07, Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost , which changes how employers that sponsor defined benefit pension or other postretirement benefit plans present the net periodic benefit cost in the income statement. The new guidance requires the service cost component of net periodic benefit cost to be presented in the same income statement line item(s) as other employee compensation costs arising from services rendered during the period with only the service cost component eligible for capitalization in assets. Other components of the net periodic benefit cost are to be stated separately from the line item(s) that includes the service cost and outside of operating income. The standard is required to be adopted for annual periods beginning after December 15, 2017, including interim periods within that annual period, which is the Company's fiscal year 2019. The amendment is to be applied retrospectively. The adoption of this standard will not change net income historically reported by the Company. In January 2017, the FASB issued ASU 2017-04, Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment ("ASU 2017-04"). The amendments in ASU 2017-04 allow companies to apply a one-step quantitative test and record the amount of goodwill impairment as the excess of a reporting unit’s carrying amount over its fair value, not to exceed the total amount of goodwill allocated to the reporting unit. ASU 2017-04 is effective for the beginning of the Company's fiscal 2021, with early adoption permitted, and must be applied prospectively. The Company elected to early adopt this standard for the fourth quarter of 2018 in order to simplify the interim and future goodwill impairment assessments, and recognized an impairment charge of $111.2 million in the Water Management segment. Refer to Note 9 Goodwill and Intangible Assets for additional information. In November 2016, the FASB issued ASU No. 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash (“ASU 2016-18”). ASU 2016-18 requires that a statement of cash flows explain the change during the period in the total of cash, cash equivalents and amounts generally described as restricted cash or restricted cash equivalents. As such, restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. The Company elected to early adopt this standard in fiscal 2018. The adoption of this standard had no impact on the Company's consolidated balance sheets or consolidated statements of cash flows. In February 2015, the FASB issued ASU 2016-02, Leases (Topic 842) ("ASU 2016-02''), which requires lessees to recognize lease assets and lease liabilities for all leases on the balance sheets. ASU 2016-02 is effective beginning for the Company's fiscal 2020 and interim periods included therein on a modified retrospective basis. The Company is currently evaluating the impact this guidance will have on its consolidated financial statements upon adoption. In July 2015, the FASB issued ASU No. 2015-11, Simplifying the Measurement of Inventory ("ASU 2015-11"). ASU 2015-11 requires inventory to be measured at the lower of cost and net realizable value, which is defined as the estimated selling price in the ordinary course of business less reasonably predictable costs of completion, disposal and transportation. Under existing guidance, net realizable value is one of several calculations needed to measure inventory at lower of cost or market and as such, the new guidance reduces the complexity in measurement. The Company adopted ASU No. 2015-11 prospectively effective April 1, 2017, and there was no impact to the Company's consolidated financial statements. In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers ("ASU 2014-09") in order to develop a common revenue standard for U.S. GAAP and International Financial Reporting Standards. The guidance specifies revenue should be recognized in an amount that reflects the consideration the company expects to be entitled to in exchange for the transfer of promised goods or services to customers. The guidance provides a five-step process that entities should follow in order to achieve that core principal. ASU 2014-09 is effective for the Company on April 1, 2018. Companies can use either a full retrospective or modified retrospective method to adopt the standard. The Company is adopting the standard using the modified retrospective approach in which prior periods are not updated to reflect the accounting basis required by the new standard, but rather a cumulative adjustment for the effects of applying the new standard to periods prior to fiscal 2019 is recorded to retained earnings as of April 1, 2018. Additionally, ASC 606 will require more comprehensive disclosures about revenue streams and contracts with customers. The Company does not expect the adoption of this standard to impact the Company’s consolidated balance sheets, statements of operations, or cash flows as a result of the adoption.

Acquisitions

Acquisitions	12 Months Ended
	Mar. 31, 2018
Business Combinations [Abstract]
Acquisitions	Acquisitions Fiscal Year 2018 On February 9, 2018, the Company acquired Centa Power Transmission (Centa Antriebe Kirschey GmbH) ("Centa"), a leading manufacturer of premium flexible couplings and drive shafts for industrial, marine, rail and power generation applications. The preliminary purchase price was $129.7 million plus assumed debt. The purchase price is comprised of $123.6 million paid at closing and $6.1 million of deferred purchase price payable in fiscal 2020. The preliminary cash purchase price is subject to customary post-closing adjustments for variances between estimated asset and liability targets and actual acquisition date net assets. Cash payments made after the acquisition date are settled in Euros based on prevailing exchange rates at the time of payment. Centa, headquartered in Haan, Germany, added complementary product lines to the Company's existing Process & Motion Control platform. On October 4, 2017, the Company acquired World Dryer Corporation (“World Dryer”) for a cash purchase price of $50.0 million , excluding transaction costs and net of cash acquired. World Dryer is a leading global manufacturer of commercial electric hand dryers. This acquisition added complementary product lines to the Company's existing Water Management platform. The Company's results of operations include the acquired operations subsequent to the respective acquisition dates. Pro-forma results of operations and certain other U.S. GAAP disclosures related to the acquisitions during the fiscal year ended March 31, 2018 have not been presented because they are not significant to the Company's consolidated statements of operations or financial position. The fiscal 2018 acquisitions were accounted for as business combinations and recorded by allocating the purchase price to the fair value of assets acquired and liabilities assumed at the acquisition date. The excess of the acquisition purchase price over the fair value assigned to the assets acquired and liabilities assumed was recorded as goodwill. The preliminary purchase price allocation associated with the fiscal 2018 acquisitions resulted in non-tax deductible goodwill of $55.2 million , other intangible assets of $44.9 million (includes tradenames of $9.9 million , $29.4 million of customer relationships and $5.6 million of patents), $44.0 million of trade working capital, $55.9 million of fixed assets, $16.6 million of long-term debt and other net liabilities of $3.7 million . The Company is continuing to evaluate the initial purchase price allocations related to final working capital adjustments, the fair values assigned to intangible assets and fixed assets, as well as the finalization of related income tax analysis, which will be completed within the one year period following the respective acquisition dates. Fiscal Year 2017 On June 1, 2016, the Company acquired Cambridge International Holdings Corp. ("Cambridge") for a cash purchase price of $213.4 million , excluding transaction costs and net of cash acquired. Cambridge, with operations in Cambridge, Maryland and Matamoros, Mexico, is one of the world's largest suppliers of metal conveying and engineered woven metal solutions, primarily used in food processing end markets, as well as in architectural, packaging and filtration applications. The acquisition of Cambridge expanded the Company's presence in consumer-driven end markets in the Process & Motion Control platform. The Company's results of operations include the acquired operations subsequent to June 1, 2016. Pro-forma results of operations and certain other U.S. GAAP disclosures related to the Cambridge acquisition have not been presented because they are not material to the Company's consolidated statements of operations or financial position. The acquisition of Cambridge was accounted for as a business combination and recorded by allocating the purchase price to the fair value of assets acquired and liabilities assumed at the acquisition date. The excess of the acquisition purchase price over the fair value assigned to the assets acquired and liabilities assumed was recorded as goodwill. The purchase price allocation resulted in non-tax deductible goodwill of $129.4 million , other intangible assets of $80.6 million (includes tradenames of $16.8 million , customer relationships of $58.3 million and patents of $5.5 million ) and other net assets of $3.4 million . During fiscal 2017, the Company acquired the remaining non-controlling interest in a Water Management joint venture for a cash purchase price of approximately $0.3 million , net of cash acquired and excluding transaction costs. The acquisition of the remaining minority interest was not material to the Company's consolidated statements of operations or financial position.

Discontinued Operations

Discontinued Operations	12 Months Ended
	Mar. 31, 2018
Discontinued Operations and Disposal Groups [Abstract]
Discontinued Operations	Discontinued Operations There was no discontinued operations activity during fiscal 2018 or fiscal 2017. In fiscal 2015 the Company ceased all operations related to its former Mill Products business, which was a component of the Process & Motion Control operating segment. Since the Company met the criteria to present this business as a discontinued operation, the results of operations of the Mill Products business are reported as discontinued operations in the consolidated statements of operations. The consolidated statements of cash flows for the fiscal year ended March 31, 2016 have not been adjusted to separately disclose cash flows related to discontinued operations. The following table summarizes the results of the Mill Products business included within loss from discontinued operations, net of tax on the consolidated statements of operations (in millions): Year Ended March 31, 2016 Net sales $ — Loss from operations before income taxes (2.2 ) Benefit for income taxes (0.8 ) Net loss from discontinued operations $ (1.4 ) Net loss per share from discontinued operations: Basic $ (0.01 ) Diluted $ (0.01 )

Restructuring and Other Similar

Restructuring and Other Similar Charges	12 Months Ended
	Mar. 31, 2018
Restructuring and Related Activities [Abstract]
Restructuring and Other Similar Charges	Restructuring and Other Similar Charges During fiscal 2018 , the Company continued to execute various restructuring actions. These initiatives were implemented to drive efficiencies and reduce operating costs while also modifying the Company's footprint to reflect changes in the markets it serves, the impact of acquisitions on the Company's overall manufacturing capacity and the refinement of its overall product portfolio. These restructuring actions primarily resulted in workforce reductions, lease termination costs, and other facility rationalization costs. Management expects to continue executing similar initiatives to optimize its operating margin and manufacturing footprint. As such, the Company expects further expenses related to workforce reductions, potential impairment or accelerated depreciation of assets, lease termination costs, and other facility rationalization costs. The Company's restructuring plans are preliminary and the full extent of related expenses are not yet estimable. The following table summarizes the Company's restructuring and other similar costs incurred during the years ended March 31, 2018 , 2017 and 2016 by classification of operating segment (in millions): Year Ended March 31, 2018 Process & Motion Control Water Management Corporate Consolidated Employee termination benefits $ 4.6 $ 4.7 $ — $ 9.3 Asset impairment charges (1) 0.8 — — 0.8 Contract termination and other associated costs 7.9 0.8 — 8.7 Total restructuring and other similar costs $ 13.3 $ 5.5 $ — $ 18.8 Year Ended March 31, 2017 Process & Motion Control Water Management Corporate Consolidated Employee termination benefits $ 16.5 $ 6.2 $ — $ 22.7 Asset impairment charges (1) 1.5 — — 1.5 Contract termination and other associated costs (2) 5.4 2.0 — 7.4 Total restructuring and other similar costs $ 23.4 $ 8.2 $ — $ 31.6 Year Ended March 31, 2016 Process & Motion Control Water Management Corporate Consolidated Employee termination benefits $ 10.8 $ 4.2 $ 0.3 $ 15.3 Asset impairment charges (1) $ 1.0 $ 16.5 $ — 17.5 Contract termination and other associated costs 0.5 1.6 — 2.1 Total restructuring and other similar costs $ 12.3 $ 22.3 $ 0.3 $ 34.9 Restructuring Costs To-date (Period from April 1, 2011 to March 31, 2018) Process & Motion Control Water Management Corporate Consolidated Employee termination benefits $ 48.9 $ 24.5 $ 2.0 $ 75.4 Asset impairment charges 3.3 16.5 — 19.8 Contract termination and other associated costs 17.7 9.1 — 26.8 Total restructuring and other similar costs $ 69.9 $ 50.1 $ 2.0 $ 122.0 (1) In connection with the ongoing supply chain optimization and footprint repositioning initiatives, the Company has taken several actions to consolidate existing manufacturing facilities and rationalize its product offerings. These actions require the Company to assess whether the carrying amount of impacted long-lived assets will be recoverable as well as whether the remaining useful lives require adjustment. The impairment charges associated with these assets recognized during fiscal 2018, 2017 and 2016 were determined utilizing independent appraisals of the assets and were classified as Level 3 inputs within the Fair Value hierarchy. Refer to Note 13 Fair Value Measurements for additional information. (2) During fiscal 2017, the Company received a $1.0 million cash payment in connection with the sale of certain Rodney Hunt Fontaine ("RHF") related intellectual property, which was fully impaired during fiscal 2016 when the Company announced its decision to exit the RHF product line. A gain on the disposition of this intellectual property of $1.0 million was recognized during fiscal 2017 within the Water Management operating segment. The Company evaluated the requirements for discontinued operations presentation in connection with the decision to exit the RHF product line and determined the product line did not meet the definition provided within the authoritative literature. The Company completed the exit of the RHF product line in fiscal 2017. Pre-tax loss from operations associated with this non-strategic exit of the RHF product-line were as follows in fiscal years 2017 and 2016: Years Ended March 31, Pre-tax Loss Description 2017 $ (16.3 ) Includes other restructuring charges (primarily severance costs) of $3.8 million 2016 $ (43.1 ) Includes asset impairments described above and other restructuring charges (primarily severance costs) of $16.5 million and $2.9 million, respectively The following table summarizes the activity in the Company's accrual for restructuring costs for the fiscal years ended March 31, 2018 and 2017 (in millions): Employee termination benefits Asset impairment charges Contract termination and other associated costs Total Accrued Restructuring Costs, March 31, 2016 (1) $ 10.5 $ — $ 0.3 $ 10.8 Charges 22.7 1.5 7.4 31.6 Cash payments (2) (20.0 ) — (6.7 ) (26.7 ) Non-cash charges (3) (2.2 ) (1.5 ) — (3.7 ) Accrued Restructuring Costs, March 31, 2017 (1) 11.0 — 1.0 12.0 Charges 9.3 0.8 8.7 18.8 Cash payments (16.1 ) — (9.3 ) (25.4 ) Non-cash charges — (0.8 ) — (0.8 ) Accrued Restructuring Costs, March 31, 2018 (1) $ 4.2 $ — $ 0.4 $ 4.6 (1) The restructuring accrual is included in Other current liabilities on the consolidated balance sheets. (2) Includes the $1.0 million cash payment received in conjunction with the aforementioned disposition of RHF-related intellectual property. (3) Included in Employee termination benefits for the year ended March 31, 2017 is $2.2 million of contractual termination benefits recognized for enhanced benefits that will be provided to certain employees impacted by the ongoing supply chain optimization and footprint repositioning initiatives. Those amounts are recorded in the Pension and post-retirement benefit obligations within the consolidated balance sheets and are therefore excluded from the restructuring accrual. Refer to Note 16 Retirement Benefits for additional information.

Recovery Under Continued Dumpin

Recovery Under Continued Dumping and Subsidy Offset Act ("CDSOA")	12 Months Ended
	Mar. 31, 2018
Other Income and Expenses [Abstract]
Recovery Under Continued Dumping and Subsidy Offset Act (“CDSOA”)	Recovery Under Continued Dumping and Subsidy Offset Act (“CDSOA”) The Company, as a producer of ball bearing products in the U.S., participated in the distribution of monies collected by Customs and Border Protection (“CBP”) from anti-dumping cases under the CDSOA. Through its participation the Company provided relevant information to CBP regarding historical manufacturing, personnel and development costs for previous calendar years. In February 2006, U.S. legislation ended CDSOA distributions to U.S. manufacturers for imports covered by anti-dumping duty orders entering the U.S. after September 30, 2007. Because monies were collected by CBP until September 30, 2007 and for prior year entries, the Company has received periodic recoveries. In connection with this program, beginning in 2006, CBP began to withhold amounts that would have otherwise been distributed as a result of pending litigation challenging past and future distributions and the administrative operation of the law. Beginning in fiscal 2013, CBP began to distribute these withheld funds to domestic producers. In connection with the distribution of these withheld funds, the Company received a distribution of $8.4 million during fiscal 2016 from CBP, which was recorded within Other (expense) income, net on the consolidated statements of operations. The Company did no t receive any distributions in fiscal 2018 or 2017. As a result of still-pending litigation, the Company cannot reasonably estimate the amount of CDSOA payments, if any, that it may receive in future years and/or whether it will be required to repay any previously received distributions.

Inventories

Inventories	12 Months Ended
	Mar. 31, 2018
Inventory Disclosure [Abstract]
Inventories	Inventories The major classes of inventories are summarized as follows (in millions): March 31, 2018 2017 Finished goods $ 146.0 $ 139.9 Work in progress 42.2 44.4 Purchased components 83.2 74.0 Raw materials 67.9 47.7 Inventories at First-in, First-Out ("FIFO") cost 339.3 306.0 Adjustment to state inventories at Last-in, First-Out ("LIFO") cost 5.5 8.9 $ 344.8 $ 314.9

Property, Plant and Equipment

Property, Plant and Equipment	12 Months Ended
	Mar. 31, 2018
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	Property, Plant and Equipment Property, plant and equipment, net is summarized as follows (in millions): March 31, 2018 2017 Land $ 37.1 $ 32.2 Buildings and improvements 273.4 239.0 Machinery and equipment 420.1 391.0 Hardware and software 72.7 68.9 Construction in-progress 36.3 19.8 839.6 750.9 Less accumulated depreciation (383.2 ) (350.0 ) $ 456.4 $ 400.9

Goodwill and Intangible Assets

Goodwill and Intangible Assets	12 Months Ended
	Mar. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	Goodwill and Intangible Assets The changes in the net carrying value of goodwill for the years ended March 31, 2018 and 2017 by operating segment, consisted of the following (in millions): Goodwill Process & Motion Control Water Management Consolidated Net carrying amount as of March 31, 2016 $ 942.4 $ 251.4 $ 1,193.8 Acquisitions (1) 129.4 — 129.4 Currency translation adjustments (3.0 ) (2.0 ) (5.0 ) Net carrying amount as of March 31, 2017 $ 1,068.8 $ 249.4 $ 1,318.2 Acquisitions (1) 29.5 25.7 55.2 Impairment — (111.2 ) (111.2 ) Currency translation adjustments 4.2 9.7 13.9 Net carrying amount as of March 31, 2018 $ 1,102.5 $ 173.6 $ 1,276.1 ______________________ (1) Refer to Note 3 for additional information regarding acquisitions. Total cumulative goodwill impairment charges as of March 31, 2018 and 2017 were $434.6 million and $323.4 million , respectively. The gross carrying amount and accumulated amortization for each major class of identifiable intangible assets as of March 31, 2018 and March 31, 2017 consisted of the following (in millions): March 31, 2018 Weighted Average Useful Life Gross Carrying Amount Accumulated Amortization Net Carrying Amount Intangible assets subject to amortization: Patents 10 years $ 53.1 $ (39.3 ) $ 13.8 Customer relationships (including distribution network) 13 years 719.6 (506.4 ) 213.2 Tradenames 13 years 40.1 (8.5 ) 31.6 Intangible assets not subject to amortization - trademarks and tradenames 318.9 — 318.9 Total intangible assets, net 13 years $ 1,131.7 $ (554.2 ) $ 577.5 March 31, 2017 Weighted Average Useful Life Gross Carrying Amount Accumulated Amortization Net Carrying Amount Intangible assets subject to amortization: Patents 10 years $ 47.0 $ (37.7 ) $ 9.3 Customer relationships (including distribution network) 13 years 685.8 (475.2 ) 210.6 Tradenames 12 years 29.5 (5.3 ) 24.2 Intangible assets not subject to amortization - trademarks and tradenames 314.5 — 314.5 Total intangible assets, net 13 years $ 1,076.8 $ (518.2 ) $ 558.6 Intangible asset amortization expense totaled $33.6 million , $42.1 million and $57.4 million for the years ended March 31, 2018 , 2017 and 2016 , respectively. Patents, tradenames, and customer relationships acquired during fiscal 2018 were assigned a weighted-average useful life of 14 years , 14 years , and 15 years , respectively. The Company expects to recognize amortization expense on the intangible assets subject to amortization of $35.4 million in fiscal year 2019, $35.2 million in fiscal year 2020, $33.7 million in fiscal year 2021, $29.4 million in fiscal year 2022, and $15.1 million in fiscal year 2023. During fiscal 2016, in connection with the exit of the RHF product line, the Company recognized $10.4 million , $0.3 million , and $0.2 million of impairment of indefinite-lived intangible assets, customer relationships and patents, respectively, Refer to Note 5 Restructuring and Other Similar Charges for additional information. The Company evaluates the carrying value of goodwill annually as of October 1 during the third quarter of each fiscal year, and more frequently if events or changes in circumstances indicate that an impairment may exist. The Company completed the testing of indefinite-lived intangible assets (tradenames) and goodwill for impairment as of October 1, 2017, in accordance with ASC 350, Intangibles-Goodwill and Other , using primarily an income valuation model (discounted cash flow) and market approach (guideline public company comparables), which indicated that the fair value of the Company's indefinite-lived intangible assets and reporting units exceeded their carrying value; therefore, no impairment was present. The Company elected to early adopt ASU No. 2017-04 as of January 1, 2018. Under the new guidance, an entity performs its goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. If the carrying amount exceeds the fair value of the reporting unit, an impairment charge is recognized for the amount by which the carrying amount exceeds the reporting unit's fair value up to the amount of the recorded goodwill. During the fourth quarter of fiscal 2018, the board of directors authorized management to initiate an evaluation of strategic alternatives in relation to the VAG business within the Water Management platform. Upon the board's further consideration in May 2018, going forward the Company plans to focus and build the Water Management platform around the Zurn specification-grade commercial plumbing products and anticipates divesting its VAG operations serving the global water and wastewater infrastructure end markets. The Company performed an interim assessment of the VAG reporting unit's goodwill for impairment. The fair value of the VAG reporting unit was estimated in accordance with ASU No. 2017-04, using both an income valuation model (discounted cash flow) and a market approach based on the estimated selling price of the VAG business in the current market environment. As a result of the anticipated divestiture and finalization of the Company's fiscal 2018 financial statements, the Company recognized a non-cash impairment charge of $111.2 million , representing the entire balance of goodwill within the VAG reporting unit, as of March 31, 2018. The Company also assessed the indefinite-lived intangible assets within the VAG reporting unit and concluded the fair value of the indefinite-lived tradename exceeded its carrying value.

Other Current Liabilities

Other Current Liabilities	12 Months Ended
	Mar. 31, 2018
Other Liabilities Disclosure [Abstract]
Other Current Liabilities	Other Current Liabilities Other current liabilities are summarized as follows (in millions): March 31, 2018 March 31, 2017 Customer advances $ 11.5 $ 10.9 Sales rebates 26.9 25.5 Commissions 7.0 6.3 Restructuring and other similar charges (1) 4.6 12.0 Product warranty (2) 8.9 7.5 Risk management (3) 10.1 8.9 Legal and environmental 3.7 4.4 Taxes, other than income taxes 8.7 10.5 Income taxes payable 25.1 17.8 Interest payable 8.7 5.7 Other 34.6 17.9 $ 149.8 $ 127.4 ___________________ (1) See more information related to the restructuring obligations balance within Note 5 . (2) See more information related to the product warranty obligations balance within Note 2 . (3) Includes projected liabilities related to losses arising from automobile, general and product liability claims.

Long-Term Debt

Long-Term Debt	12 Months Ended
	Mar. 31, 2018
Debt Disclosure [Abstract]
Long-Term Debt	Long-Term Debt Long-term debt is summarized as follows (in millions): March 31, 2018 March 31, 2017 Term loans (1) $ 791.5 $ 1,584.5 4.875% Senior Notes due 2025 (2) 494.2 — Securitization facility borrowings (3) 18.3 — Other subsidiary debt (4) 52.0 38.2 Total 1,356.0 1,622.7 Less current maturities 3.9 16.5 Long-term debt $ 1,352.1 $ 1,606.2 ____________________ (1) Includes unamortized debt issuance costs of $8.5 million and $17.9 million at March 31, 2018 and March 31, 2017 , respectively. (2) Includes unamortized debt issuance costs of $5.8 million at March 31, 2018. (3) Includes unamortized debt issuance costs of $0.5 million at March 31, 2018. (4) Includes unamortized debt issuance costs of $0.5 million at both March 31, 2018 and March 31, 2017 . Senior Secured Credit Facility At March 31, 2018, the Company’s Third Amended and Restated First Lien Credit Agreement, as amended (the “Credit Agreement”) is funded by a syndicate of banks and other financial institutions and provides for (i) an $800.0 million term loan facility and (ii) a $264.0 million revolving credit facility. As of March 31, 2018 , the Company was in compliance with all applicable covenants under the Credit Agreement, including compliance with a maximum permitted total net leverage ratio (the Company's sole financial maintenance covenant under the revolving credit facility discussed below) of 6.75 to 1.0. The Company's total net leverage ratio was 3.0 to 1.0 as of March 31, 2018 . Term Debt On December 16, 2016, the Company entered into an Incremental Assumption Agreement (the "Fiscal 2017 Term Agreement") relating to the Credit Agreement. The Credit Agreement had included a $1,950.0 million term loan facility (the "Fiscal 2014 Term Loan"). The Fiscal 2017 Term Agreement provided for a new term loan in the aggregate principal amount of $1,606.4 million term loan facility (the “Fiscal 2017 Term Loan"). The proceeds were used to repay in full the then-outstanding aggregate principal amount of the Fiscal 2014 Term Loan. Prior to the repayment in fiscal 2017, the Company had made two voluntary prepayments on the Fiscal 2014 Term Loan aggregating to $290.0 million . On December 7, 2017, the Company entered into a further Incremental Assumption Agreement (the "Fiscal 2018 Amendment") with a syndicate of banks and other financial institutions, relating to the Credit Agreement. The Fiscal 2018 Amendment provided for a new term loan in the aggregate principal amount of $800.0 million (the “Fiscal 2018 Term Loan”). The proceeds of the Fiscal 2018 Term Loan were used, along with cash on hand and the $500.0 million of proceeds from the Company’s issuance of the Notes (as defined below), to refinance and reduce the aggregate principal amount of the Fiscal 2017 Term Loan. The Fiscal 2018 Term Loan has a maturity date of August 21, 2024 and there are no required principal payments due or scheduled under the term debt until the maturity date. The borrowings under the Fiscal 2018 Term Loan bear interest at either (i) London Interbank Offered Rate (“LIBOR”) (subject to a 0% floor) plus an applicable margin of 2.25% or at an alternative base rate plus an applicable margin of 1.25% , or (ii) if the borrowers have received a corporate rating equal to or higher than Ba3 (with at least a stable outlook) by Moody’s and BB- (with at least a stable outlook) by S&P, LIBOR (subject to a 0% floor) plus an applicable margin of 2.00% or an alternate base rate plus an applicable margin of 1.00% . At March 31, 2018 , the borrowings under the Fiscal 2018 Term Loan had a weighted-average effective interest rate of 4.11% . The weighted-average interest rate for the Fiscal 2018 Term Loan from the date of its refinancing through March 31, 2018 , was 3.81% determined as LIBOR (subject to a 0% floor) plus an applicable margin of 2.25% . During fiscal 2018, the Company recognized an $11.9 million loss on the debt extinguishment associated with the Fiscal 2018 Amendment, which was comprised of $3.9 million of refinancing-related costs, as well as a non-cash write-off of unamortized debt issuance costs associated with the Fiscal 2017 Term Loan of $8.0 million . Additionally, the Company capitalized $0.8 million and $6.0 million of direct costs associated with the Fiscal 2018 Term Loan, which are being amortized over the life of the loans as interest expense using the effective interest method. During fiscal 2017 , the Company recognized a $7.8 million loss on the debt extinguishment associated with the Fiscal 2017 Term Agreement, which was comprised of $5.4 million of refinancing-related costs, as well as a non-cash write-off of unamortized debt issuance costs associated with the Fiscal 2014 Term Loan of $2.4 million . Revolving Credit Facility The Credit Agreement, as originally entered in fiscal 2014 (the "Fiscal 2014 Agreement") included a $265.0 million revolving credit facility. During fiscal 2017, the Company entered into an Incremental Assumption Agreement (the “Fiscal 2017 Revolver Extension”) that amended the Fiscal 2014 Agreement to (i) reduce the applicable margin on both alternate base rate ("ABR") and Eurocurrency loans (discussed below) by 1.0% , (ii) extend the revolving facility maturity date to March 15, 2019, (iii) modify the financial covenant of the Fiscal 2014 Agreement by eliminating the prior springing nature of the covenant, and substituting a Total Net Leverage Ratio of 6.75 to 1.0 , and (iv) reduce the letter of credit availability from $80.0 million to $60.0 million (without reducing the overall availability under the Fiscal 2014 Agreement). In connection with the Fiscal 2018 Amendment, the aggregate amount of the revolving credit facility commitments was reduced to $264.0 million and the maturity date of the revolving facility was extended to March 15, 2023. In connection with the Fiscal 2018 Amendment, the Company capitalized $0.2 million of transaction related costs which are being recognized as interest expense over the remaining tenure of the amended facility. For revolving commitments, the Company's applicable margin above the base rate is 2.00% in the case of ABR borrowings and 3.00% in the case of Eurocurrency borrowings, subject to a net first lien leverage test. In the event the Company's net first lien leverage ratio is less than 1.5 to 1.0, its applicable margin on both ABR and Eurocurrency borrowings would decrease by twenty-five (25) basis points. The Company's actual first lien leverage ratio was 3.0 to 1.0 as of March 31, 2018. In addition to paying interest on outstanding principal, the Company is subject to a commitment fee to the lenders under the revolving credit facility with respect to the unutilized commitments thereunder at a rate equal to 0.50% per annum. No amounts were borrowed under the revolving credit facility at March 31, 2018 or 2017 ; however, $8.3 million and $14.6 million of the revolving credit facility were considered utilized in connection with outstanding letters of credit at March 31, 2018 and 2017 , respectively. 4.875% Senior Notes due 2025 On December 7, 2017, the Company issued $500.0 million aggregate principal amount of 4.875% senior notes due 2025 (the “Notes”). The Notes were issued by RBS Global, Inc. and Rexnord LLC (Company subsidiaries; collectively, the “Issuers”) pursuant to an Indenture, dated as of December 7, 2017 (the “Indenture”), by and among the Issuers, the domestic subsidiaries of the Company (with certain exceptions) as guarantors named therein (the “Subsidiary Guarantors”) and Wells Fargo Bank, National Association (the “Trustee”). The Notes are general senior unsecured obligations of the Issuers. Rexnord Corporation separately entered into a Parent Guarantee with the Trustee whereby it guaranteed certain obligations of the Issuers under the Indenture. The Notes pay interest semi-annually on June 15 and December 15, accruing upon issuance, at a rate of 4.875% per year with the first payment due on June 15, 2018. The Notes were not and will not be registered under the Securities Act of 1933 or any state securities laws. The Company capitalized $6.0 million of direct issuance costs associated with the Notes that are being amortized over the life of the Notes using the effective interest method. The Issuers may redeem some or all of the Notes at any time or from time to time prior to December 15, 2020 at certain “make-whole” redemption prices (as set forth in the Indenture) and after December 15, 2020 at specified redemption prices (as set forth in the Indenture). Additionally, the Issuers may redeem up to 40% of the aggregate principal amount of the Notes at any time or from time to time prior to December 15, 2020 with the net proceeds of specified equity offerings at specified redemption prices (as set forth in the Indenture). Upon a change of control (as defined in the Indenture), the Issuers will be required to make an offer to purchase the Notes at a price equal to 101% of the principal amount of the Notes on the date of purchase plus accrued interest. The Indenture contains customary covenants, such as restrictions on the Issuers and its restricted subsidiaries (but not on Rexnord Corporation) incurring or guaranteeing additional indebtedness or issuing certain preferred shares, paying dividends and making other restricted payments and creating or incurring certain liens. The Notes and Indenture do not contain any financial covenants. The Notes and Indenture contain customary events of default, including the failure to pay principal or interest when due, breach of covenants, cross-acceleration to other debt of the Issuers or restricted subsidiaries in excess of $50 million and bankruptcy events, all subject to terms, including notice and cure periods, as set forth in the Indenture. Accounts Receivable Securitization Program During fiscal 2016, the Company entered into an amended accounts receivable securitization facility (the “Securitization”) with Wells Fargo & Company ("Wells Fargo"). Pursuant to the agreements evidencing the Securitization, Rexnord Funding LLC ("Rexnord Funding") (a wholly owned bankruptcy-remote special purpose subsidiary) has granted Wells Fargo a security interest in all of its current and future receivables and related assets in exchange for a credit facility permitting borrowings of up to a maximum aggregate amount of $100.0 million outstanding from time to time. Such borrowings are used by Rexnord Funding to finance purchases of accounts receivable. The amount of advances available will be determined based on advance rates relating to the eligibility of the receivables held by Rexnord Funding at that time. Advances bear interest based on LIBOR plus 1.75% . The last date on which advances may be made is December 30, 2020 unless the maturity of the Securitization is otherwise accelerated. In addition to other customary fees associated with financings of this type, Rexnord Funding pays an unused line fee to Wells Fargo based on any unused portion of the Securitization facility. If the average daily outstanding principal amount during a calendar month is less than 50% of the average daily aggregate commitment in effect during such month, the unused line fee is 0.50% per annum; otherwise, it is 0.375% per annum. The Securitization constitutes a “Permitted Receivables Financing” under the Credit Agreement and does not qualify for sale accounting under ASC 860, Transfers and Servicing . Any borrowings under the Securitization are accounted for as secured borrowings on the Company's consolidated balance sheet. Financing costs associated with the Securitization are recorded within "Interest expense, net" in the consolidated statements of operations if revolving loans or letters of credit are obtained under the facility. At March 31, 2018 , the Company's borrowing capacity under the Securitization was $100.0 million , based on the current accounts receivables balance. At March 31, 2018 and 2017 , $18.8 million and $0 was borrowed under the Securitization respectively. In addition, $7.9 million and $4.6 million of available borrowing capacity under the Securitization was considered utilized in connection with outstanding letters of credit at March 31, 2018 and 2017 , respectively. As of March 31, 2018 , the Company was in compliance with all applicable covenants and performance ratios contained in the Securitization. Other Subsidiary Debt Prior to 2016, the Company received an aggregate of $9.8 million in net proceeds from financing agreements related to facility modernization projects at two North American manufacturing facilities. These financing agreements were structured with unrelated third party financial institutions (the "Investors") and their wholly-owned community development entities in connection with the Company's participation in transactions qualified under the federal New Market Tax Credit program, pursuant to Section 45D of the Internal Revenue Code of 1986, as amended. Through its participation in this program, the Company has secured low interest financing and the potential for future debt forgiveness related to eligible capital projects. Upon closing of these transactions, the Company provided an aggregate of $27.6 million to the Investor, in the form of loans receivable, with a term of 30 years, bearing an interest rate of approximately 2.0% per annum. As collateral for these loans, the Company granted a security interest in the assets acquired with the loan proceeds. No earlier than December 2018, and upon meeting certain conditions, both the Investors and the Company have the ability to trigger forgiveness of the net debt which could result in a gain of up to $9.8 million , excluding applicable transaction costs and unamortized debt issuance costs. To the extent the loans payable are not forgiven, the Company would be required to repay the full amount of the outstanding $37.4 million principal balance and would concurrently receive a loan repayment of $27.6 million on the aforementioned loans receivable, resulting in a net $9.8 million use of liquidity. At March 31, 2018 and 2017 , the aggregate loans of $36.9 million , net of debt issuance costs, are recorded in Long-Term Debt on the consolidated balance sheets and the aggregate loans receivable of $27.6 million are recorded in Other Assets on the consolidated balance sheets. At March 31, 2018 and 2017 , in addition to the aforementioned New Market Tax Credit, various wholly owned subsidiaries had additional debt of $33.9 million and $1.4 million , respectively, comprised primarily of borrowings under the accounts receivable securitization facility, various foreign subsidiaries, and capital lease obligations. Future Debt Maturities Future maturities of debt as of March 31, 2018, excluding the unamortized debt issuance costs of $15.3 million , were as follows (in millions): Years ending March 31: 2019 $ 3.9 2020 18.8 2021 20.2 2022 1.1 2023 1.1 Thereafter 1,326.2 $ 1,371.3 Cash interest paid for the fiscal years ended March 31, 2018, 2017 and 2016 was $69.9 million , $84.9 million and $84.1 million , respectively.

Derivative Financial Instrument

Derivative Financial Instruments	12 Months Ended
	Mar. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	Derivative Financial Instruments The Company is exposed to certain financial risks relating to fluctuations in foreign currency exchange rates and interest rates. The Company currently selectively uses foreign currency forward exchange contracts to manage its foreign currency risk and interest rate swaps and interest rate caps to manage its interest rate risk. All hedging transactions are authorized and executed pursuant to defined policies and procedures that prohibit the use of financial instruments for speculative purposes. Foreign Exchange Contracts The Company periodically enters into foreign currency forward contracts to mitigate the foreign currency volatility relative to certain intercompany and external cash flows expected to occur. These foreign currency forward contracts were not accounted for as cash flow hedges in accordance with ASC 815, Derivatives and Hedging (“ASC 815”), and as such were marked to market through earnings. The amounts recorded on the consolidated balance sheets and recognized within the condensed consolidated statements of operations related to the Company's foreign currency forward contracts are set forth within the tables below. Interest Rate Derivatives The Company utilizes three interest rate swaps to hedge the variability in future cash flows associated with the Company's variable-rate term loans. The interest rate swaps, which originally became effective in fiscal 2016, convert $650.0 million of the Company’s variable-rate term loans to a weighted average fixed interest rate of 2.55% plus the applicable margin and will mature on September 27, 2018. In addition, the Company utilizes two interest rate caps to further mitigate the Company's exposure to increasing interest rates on its variable-rate interest loans. Those interest rate caps were effective beginning in fiscal 2015 with a maturity of October 24, 2018, and they cap the interest on $750.0 million of the Company's variable-rate interest loans at 3.0% , plus the applicable margin. In executing the interest rate caps, the Company paid a premium of $5.8 million . At inception, the interest rate swaps and interest rate caps were designated as cash flow hedges in accordance with ASC 815. In connection with the Fiscal 2018 Amendment to the Credit Agreement described in Note 11, the critical terms of the interest rate derivatives no longer matched the outstanding debt and no longer qualify as effective hedges. Upon discontinuation of hedge accounting, the unrealized losses associated with the interest rate derivatives remaining in accumulated other comprehensive loss is reclassified into interest expense on a straight-line basis over the remaining term of the interest rate derivatives. The fair values of the Company's interest rate derivatives are recorded on the consolidated balance sheets; however, changes in fair values subsequent to the Amendment are recognized within the consolidated statements of operations. See the amounts recorded on the consolidated balance sheets related to the Company's interest rate derivatives within the tables below. The Company's derivatives are measured at fair value in accordance with ASC 820, Fair Value Measurements and Disclosure (“ASC 820”). See Note 13 for more information as it relates to the fair value measurement of the Company's derivative financial instruments. The following tables indicate the location and the fair value of the Company's non-qualifying, non-designated derivative instruments within the consolidated balance sheets (in millions): March 31, 2018 March 31, 2017 Balance Sheet Classification Asset Derivatives Interest rate caps $ — $ — Other assets Foreign currency forward contracts $ 0.4 $ — Other current assets Liability Derivatives Interest rate swaps $ 0.8 $ — Other current liabilities Interest rate swaps $ — $ 10.3 Other liabilities Foreign currency forward contracts $ — $ 0.1 Other current liabilities The following table segregates the location and the amount of gains or losses associated with the changes in the fair value of the Company's derivative instruments, net of tax, within the consolidated balance sheets (for instruments no longer qualifying for hedge accounting under ASC 815) and recognized within the consolidated statements of operations (for non-qualifying, non-designated derivative instruments): Amount of loss recognized in accumulated other comprehensive loss Derivative instruments no longer qualifying for hedge accounting under ASC 815 (in millions) March 31, 2018 March 31, 2017 Interest rate swaps $ 2.3 $ 6.4 Interest rate caps $ 1.4 $ 3.1 Amount recognized as (income) expense Non-qualifying, non-designated derivative instruments (in millions) Consolidated Statements of Operations Classification Year Ended March 31, 2018 March 31, 2017 March 31, 2016 Foreign currency forward contracts Other (income) expense , net $ 0.2 $ (0.3 ) $ — Interest rate swaps Interest expense, net $ (5.0 ) $ — $ — During fiscal 2018, 2017, and 2016, the Company reclassified $9.7 million , $10.2 million , and $5.2 million of accumulated other comprehensive loss into earnings as interest expense related to interest rate derivatives, respectively. The Company expects to reclassify $5.7 million of accumulated other comprehensive loss into earnings as interest expense during the next twelve months.

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Mar. 31, 2018
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements ASC 820 defines fair value as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants. ASC 820 also specifies a fair value hierarchy based upon the observability of inputs used in valuation techniques. Observable inputs (highest level) reflect market data obtained from independent sources, while unobservable inputs (lowest level) reflect internally developed assumptions about the assumptions a market participant would use. In accordance with ASC 820, fair value measurements are classified under the following hierarchy: • Level 1- Quoted prices for identical instruments in active markets. • Level 2- Quoted prices for similar instruments; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations in which all significant inputs or significant value-drivers are observable. • Level 3- Model-derived valuations in which one or more inputs or value-drivers are both significant to the fair value measurement and unobservable. If applicable, the Company uses quoted market prices in active markets to determine fair value, and therefore classifies such measurements within Level 1. In some cases where market prices are not available, the Company makes use of observable market based inputs to calculate fair value, in which case the measurements are classified within Level 2. If quoted or observable market prices are not available, fair value is based upon internally developed models that use, where possible, current market-based parameters. These measurements are classified within Level 3 if they use significant unobservable inputs. Fair Value of Derivative Instruments The Company transacts in foreign currency forward contracts and interest rate swaps and caps, which are impacted by ASC 820. The fair value of foreign currency forward contracts is based on a pricing model that utilizes the differential between the contract price and the market-based forward rate as applied to fixed future deliveries of currency at pre-designated settlement dates. The fair value of interest rate swaps and caps is based on pricing models. These models use discounted cash flows that utilize the appropriate market-based forward swap curves and interest rates. The Company endeavors to utilize the best available information in measuring fair value. As required by ASC 820, financial assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. The Company has determined that its foreign currency forward contracts and interest rate swaps reside within Level 2 of the fair value hierarchy. There were no transfers of assets between levels during the years ended March 31, 2018 and March 31, 2017 . The following table provides a summary of the Company's assets and liabilities that were recognized at fair value on a recurring basis as of March 31, 2018 and March 31, 2017 (in millions): Fair Value as of March 31, 2018 Level 1 Level 2 Level 3 Total Assets: Foreign currency forward contracts $ — $ 0.4 $ — $ 0.4 Total assets at fair value $ — $ 0.4 $ — $ 0.4 Liabilities: Interest rate swaps $ — $ 0.8 $ — $ 0.8 Total liabilities at fair value $ — $ 0.8 $ — $ 0.8 Fair Value as of March 31, 2017 Level 1 Level 2 Level 3 Total Liabilities: Interest rate swaps $ — $ 10.3 $ — $ 10.3 Foreign currency forward contracts — 0.1 — 0.1 Total liabilities at fair value $ — $ 10.4 $ — $ 10.4 Fair Value of Non-Derivative Financial Instruments The carrying amounts of cash, receivables, payables and accrued liabilities approximated fair value at March 31, 2018 and March 31, 2017 due to the short-term nature of those instruments. The fair value of long-term debt recorded on the consolidated balance sheets as of March 31, 2018 and March 31, 2017 was approximately $1,361.8 million and $1,644.6 million , respectively. The fair value is based on quoted market prices for the same issues. Long-lived Assets and Intangible Assets Long-lived assets (which include property, plant and equipment and real estate) may be measured at fair value if such assets are held-for-sale or when there is a determination that the asset is impaired. Intangible assets (which include patents, tradenames, customer relationships, and non-compete agreements) also may be measured at fair value when there is a determination that the asset is impaired. The determination of fair value for these assets is based on the best information available that resides within Level 3 of the fair value hierarchy, including internal cash flow estimates discounted at an appropriate interest rate, quoted market prices when available, market prices for similar assets and independent appraisals, as appropriate. For real estate, cash flow estimates are based on current market estimates that reflect current and projected lease profiles and available industry information about expected trends in rental, occupancy and capitalization rates. As discussed in Note 5 Restructuring and Other Similar Charges, in connection with the ongoing supply chain optimization and footprint repositioning initiatives, the Company has taken several actions to consolidate existing manufacturing facilities and rationalize its product offerings. These actions require the Company to assess whether the carrying amount of impacted long-lived assets will be recoverable as well as whether the remaining useful lives require adjustment. During fiscal 2017 and 2018 , the Company recognized both impairment charges and accelerated depreciation of certain assets to place the assets at net realizable value. Net realizable value of these assets was determined using independent appraisals, classified as Level 3 inputs within the fair value hierarchy. As of March 31, 2018 and March 31, 2017 , these assets were recorded at net realizable value on the consolidated balance sheets within property, plant and equipment in the amount of $5.6 million and $7.0 million , respectively. As of March 31, 2018, all held for sale assets were held in the Process & Motion Control platform. As of March 31, 2017, $5.4 million and $1.6 million of held for sale assets were held in the Process & Motion Control and Water Management platforms, respectively. During fiscal 2018, the Company sold approximately $3.8 million of these assets, and during fiscal 2017 , the Company sold approximately $3.4 million of these assets upon completion of the remaining backlog associated with the Rodney Hunt Fontaine flow control gate product line. In April of 2018, the Company sold $4.1 million of the $5.6 million assets recorded at fair value as of March 31, 2018. Additionally, as discussed in Note 9 Goodwill and Intangible Assets, the Company began an evaluation of strategic alternatives in relation to the VAG business within the Water Management platform in the fourth quarter of 2018. In connection with the anticipated divestiture of the VAG business, the Company evaluated but did not meet the criteria to classify the VAG business assets as held for sale as of March 31, 2018. As the Company solidifies its anticipated divestiture of the VAG business in which the assets are required to be classified as held for sale, the Company may be required to recognize additional impairment charges.

Leases

Leases	12 Months Ended
	Mar. 31, 2018
Leases [Abstract]
Leases	Leases The Company leases manufacturing and warehouse facilities and data processing and other equipment under non-cancelable operating leases which expire at various dates primarily through 2033. Rent expense under operating leases totaled $21.8 million , $20.7 million and $18.2 million for the fiscal years ended March 31, 2018 , 2017 and 2016 , respectively. Future minimum rental payments for operating leases with initial terms in excess of one year as of March 31, 2018 are as follows (in millions): Years ending March 31: 2019 $ 19.1 2020 17.7 2021 11.9 2022 9.4 2023 8.4 Thereafter 40.7 $ 107.2

Stock-Based Compensation

Stock-Based Compensation	12 Months Ended
	Mar. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation	Stock-Based Compensation In accordance with ASC 718, the Company recognizes compensation costs related to share-based payment transactions. Generally, compensation cost is measured based on the grant-date fair value of the equity instruments issued. Compensation cost is recognized over the requisite service period, generally as the awards vest. In fiscal 2012, the Board of Directors adopted, and stockholders approved, the Rexnord Corporation Performance Incentive Plan (as amended with Board of Directors and stockholder approval in fiscal 2017, the "Plan"). The Plan is utilized to provide performance incentives to the Company's officers, employees, directors and certain others by permitting grants of equity awards (for common stock), as well as performance-based cash awards, to such persons, to encourage them to maximize Rexnord's performance and create value for Rexnord's stockholders. To date, stock options, Restricted Stock Units ("RSUs") and Performance Stock Units ("PSUs") have been issued under the Plan. The options granted under the Plan have a maximum term of 10 years after the grant date. Options granted from the inception of the Plan through July 31, 2014 vest 50% three years after the grant date and the remaining 50% vest five years after the grant date. Options and RSUs granted from July 31, 2014 through May 21, 2015 vest ratably over four years. Options and RSUs granted subsequent to May 21, 2015 generally vest ratably over 3 years. PSUs granted cliff vest after 3 years. The Plan permits the grant of awards that may deliver up to an aggregate of 12,150,000 shares of common stock further subject to limits within the meaning of Section 162(m) of the Internal Revenue Code, to any individual in a single year. The Plan is administered by the Compensation Committee. During fiscal 2018 , 2017 and 2016 , the Company recorded $20.5 million , $13.4 million and $7.5 million of stock-based compensation expense, respectively (the related tax benefit on these amounts was $6.5 million for fiscal 2018 , $4.7 million for fiscal 2017 , and $2.8 million for fiscal 2016 ). During fiscal 2018 , 2017 and 2016 , the Company also recorded $1.3 million , $8.3 million and $4.0 million , respectively, of an excess tax benefit related to stock options exercised during each fiscal year. As of March 31, 2018 , there was $23.7 million of total unrecognized compensation cost related to non-vested stock options, RSUs and PSUs granted under the Plan. That cost is expected to be recognized over a weighted-average period of 1.61 years. Stock Options The fair value of each option granted under the Plan was estimated on the date of grant using the Black-Scholes valuation model that uses the following weighted-average assumptions: Years Ended March 31, 2018 March 31, 2017 March 31, 2016 Expected option term (in years) 6.5 6.5 6.5 Expected volatility factor 31 % 29 % 24 % Weighted-average risk free interest rate 1.99 % 1.58 % 1.82 % Expected dividend rate 0.0 % 0.0 % 0.0 % Management’s estimate of the option term for options granted under the Plan is based on the midpoint between when the options vest and when they expire. The Company uses the simplified method to determine the expected term, as management does not have sufficient historical exercise data to provide a reasonable basis upon which to estimate the expected term. The Company’s expected volatility assumption for options granted in fiscal 2018 was based on the Company's own historical volatility, while the expected volatility assumption for options granted in prior fiscal years was based on the expected volatilities of publicly-traded companies within the Company’s industry, due to the limited period of time its common stock shares had been publicly traded. The weighted average risk free interest rate is based on the U.S. Treasury yield curve in effect at the date of grant. Management also assumes expected dividends of zero . The weighted-average grant date fair value of options granted under the Plan during fiscal 2018 , 2017 and 2016 was $8.12 , $6.41 and $6.92 , respectively. The total fair value of options vested during fiscal 2018 , 2017 and 2016 was $16.0 million , $5.8 million and $9.8 million , respectively. A summary of stock option activity during fiscal 2018, 2017 and 2016 is as follows: Years Ended March 31, 2018 March 31, 2017 March 31, 2016 Shares Weighted Avg. Exercise Price Shares Weighted Avg. Exercise Price Shares Weighted Avg. Exercise Price Number of shares under options: Outstanding at beginning of period 7,770,670 $ 18.73 7,854,685 $ 15.10 8,588,518 $ 13.04 Granted 1,176,205 23.17 2,602,014 19.72 1,072,556 24.14 Exercised (1) (543,443 ) 14.89 (2,116,571 ) 5.18 (1,278,017 ) 5.55 Canceled/Forfeited (285,485 ) 22.55 (569,458 ) 23.34 (528,372 ) 23.53 Outstanding at end of period (2) 8,117,947 $ 19.50 7,770,670 $ 18.73 7,854,685 $ 15.10 Exercisable at end of period (3) 4,810,737 $ 17.93 3,221,622 $ 15.25 4,678,216 $ 9.52 ______________________ (1) The total intrinsic value of options exercised during fiscal 2018 , 2017 and 2016 was $6.4 million , $29.1 million and $16.3 million , respectively. (2) The weighted average remaining contractual life of options outstanding was 6.1 years at March 31, 2018 , 6.6 years at March 31, 2017 and 5.0 years at March 31, 2016 . The aggregate intrinsic value of options outstanding at March 31, 2018 was $82.7 million . (3) The weighted average remaining contractual life of options exercisable was 4.7 years at March 31, 2018 , 4.6 years at March 31, 2017 and 3.0 years at March 31, 2016 . The aggregate intrinsic value of options exercisable at March 31, 2018 was $56.5 million . Shares Weighted Avg. Exercise Price Nonvested options at beginning of period 4,549,048 $ 21.20 Granted 1,176,205 23.17 Vested (2,169,627 ) 21.31 Canceled/Forfeited (248,416 ) 21.96 Nonvested options at end of period 3,307,210 $ 21.77 Restricted Stock Units During fiscal 2018 , 2017 and 2016 the Company granted restricted stock units ("RSUs") to certain of its officers, directors, and employees. The fair value of each award is determined based on the Company's closing stock price on the date of grant. A summary of RSU activity during fiscal 2018 , 2017 , and 2016 is as follows: Years Ended March 31, 2018 March 31, 2017 March 31, 2016 Units Weighted Avg. Grant Date Fair Value Units Weighted Avg. Grant Date Fair Value Units Weighted Avg. Grant Date Fair Value Nonvested RSUs at beginning of period 322,142 $ 20.59 125,307 $ 24.67 53,813 $ 29.06 Granted 250,013 23.19 279,445 19.53 96,952 23.20 Vested (150,784 ) 21.92 (48,207 ) 24.01 (12,866 ) 29.09 Canceled/Forfeited (53,189 ) 22.41 (34,403 ) 22.00 (12,592 ) 27.62 Nonvested RSUs at end of period 368,182 $ 21.55 322,142 $ 20.59 125,307 $ 24.67 Performance Stock Units During fiscal 2018 , 2017 and 2016, the Company granted performance stock units (“PSUs”) to certain of its officers and employees. Those PSUs have a three -year performance period, and are earned and vest, subject to continued employment, based in part on performance relative to metrics determined by the Compensation Committee. The number of performance share awards earned, which can range between 0% and 200% of the target awards granted depending on the Company's actual performance during the three -year performance period, will be satisfied with Rexnord common stock. A summary of PSU activity during fiscal 2018 , 2017 and 2016 is as follows: Years Ended March 31, 2018 March 31, 2017 March 31, 2016 Units Weighted Avg. Grant Date Fair Value Units Weighted Avg. Grant Date Fair Value Units Weighted Avg. Grant Date Fair Value Nonvested PSUs at beginning of period 259,930 $ 24.74 49,136 $ 28.57 — $ — Granted 193,071 26.58 219,266 23.95 50,711 28.57 Vested — — — — — — Canceled/Forfeited — — (8,472 ) 25.90 (1,575 ) 28.57 Nonvested PSUs at end of period 453,001 $ 25.53 259,930 $ 24.74 49,136 $ 28.57 The fair value of the portion of PSUs with vesting based on free cash flow conversion is determined based on the Company's closing stock price on the date of grant. The fair value of the portion of PSUs granted in fiscal 2018 and prior years with vesting based on relative total shareholder return is determined utilizing the Monte Carlo simulation model. Assumptions used to determine the fair value of each PSU were based on historical data and standard industry valuation practices and methodology. The following weighted-average assumptions were used for the portion of PSUs granted during fiscal 2018, 2017 and 2016 using the Monte Carlo method: Years Ended March 31, 2018 March 31, 2017 March 31, 2016 Expected volatility factor 31 % 30 % 31 % Weighted-average risk-free interest rate 1.45 % 0.86 % 1.01 % Expected dividend rate 0.0 % 0.0 % 0.0 % PSU fair value per share $31.25 $27.67 $32.06

Retirement Benefits

Retirement Benefits	12 Months Ended
	Mar. 31, 2018
Retirement Benefits [Abstract]
Retirement Benefits	Retirement Benefits The Company sponsors pension and other postretirement benefit plans for certain employees. Most of the Company’s employees are accumulating retirement income benefits through defined contribution plans. However, the Company sponsors frozen pension plans for certain salaried participants and ongoing pension benefits for certain employees represented by collective bargaining. These plans provide for monthly pension payments to eligible employees upon retirement. Pension benefits for salaried employees generally are based on years of frozen credited service and average earnings. Pension benefits for hourly employees generally are based on specified benefit amounts and years of service. The Company’s policy is to fund its pension obligations in conformity with the funding requirements under applicable laws and governmental regulations. Other postretirement benefits consist of retiree medical plans that cover a portion of employees in the United States that meet certain age and service requirements. The Company recognizes the net actuarial gains or losses in excess of the corridor in operating results during the fourth quarter of each fiscal year (or upon any required re-measurement event). The corridor is 10% of the greater of the projected benefit obligation or the fair value of the plan assets. In connection with this accounting policy, the Company recognized a non-cash actuarial (gain) loss of $(3.3) million , $(2.6) million , and $12.9 million , during the fiscal years ended March 31, 2018 , 2017 and 2016 , respectively. Net periodic benefit costs recorded on a quarterly basis are primarily comprised of service and interest cost, amortization of unrecognized prior service cost and the expected return on plan assets. As of December 31, 2017, the Company merged three of its U.S. defined benefit plans into a single plan, thereby also merging all of the plans' assets. The merger of the three plans was a non-substantive change with no changes to the benefit formulas, vesting provisions, or employees covered by the plans. Accordingly, the Company determined an off-cycle remeasurement of the plans assets and benefit obligations was not required. The components of net periodic benefit cost reported in the consolidated statements of operations are as follows (in millions): Year Ended March 31, 2018 March 31, 2017 March 31, 2016 Pension Benefits: Service cost $ 1.0 $ 1.8 $ 2.2 Interest cost 24.4 25.7 25.5 Expected return on plan assets (26.7 ) (27.1 ) (28.8 ) Amortization of: Prior service cost — 0.1 0.1 (Income) cost associated with special events: Curtailment (1) (0.3 ) (1.4 ) — Contractual termination benefits (2) — 2.2 — Recognition of actuarial (gains) losses (1.1 ) — 13.0 Net periodic benefit (income) cost $ (2.7 ) $ 1.3 $ 12.0 Other Postretirement Benefits: Service cost $ — $ 0.1 $ 0.1 Interest cost 1.0 1.1 1.2 Amortization: Prior service credit (1.9 ) (2.0 ) (2.0 ) Cost associated with special events: Curtailment (1) — 0.4 — Recognition of actuarial gains (1.9 ) (1.6 ) (0.1 ) Net periodic benefit income $ (2.8 ) $ (2.0 ) $ (0.8 ) (1) During fiscal 2018 and 2017, certain active participants of a foreign pension plan were transferred out of the pension plan and placed into a defined contribution plan, resulting in a curtailment gain of $0.3 million and $1.4 million , respectively. In addition, during fiscal 2017 the Company also recognized a curtailment loss of $0.4 million associated with a postretirement benefit plan resulting from the decision to close a U.S. manufacturing facility in connection with the Company’s ongoing supply chain optimization and footprint repositioning initiatives. See Note 5, Restructuring and Other Similar Charges for additional information. The recognition of the non-cash net curtailment gain of $0.3 million and $1.0 million is recorded within Actuarial (gain) loss on pension and postretirement benefit obligations in the consolidated statements of operations for the fiscal years ended March 31, 2018 and 2017, respectively. (2) During fiscal 2017, the Company recognized incremental expense of $2.2 million of termination benefits associated with incremental benefits participants of the Company’s domestic union defined benefit plans will receive following the Company’s decision to close one of its U.S. manufacturing facilities. The contractual termination benefit is recorded in Restructuring and other similar charges on the fiscal 2017 consolidated statements of operations. In fiscal 2018, the recognition of $3.3 million of non-cash actuarial gains was primarily due to the foreign pension plan change described above, as well as improved demographic and claims experience associated with the Company’s other postretirement benefit plans. In fiscal 2017, the recognition of $2.6 million of non-cash actuarial gains was primarily associated with the net curtailment gain described above and improved demographic and claims experience associated with the Company’s other postretirement benefit plans. In fiscal 2016, lower than projected asset growth, partially offset by a slightly higher discount rate and shorter life expectancy assumptions resulted in the recognition of non-cash net actuarial losses of $12.9 million . The Company made contributions to its U.S. qualified pension plan trusts of $2.9 million , $4.9 million , and $4.9 million during the years ended March 31, 2018 , 2017 and 2016 , respectively. The status of the plans are summarized as follows (in millions): Pension Benefits Other Postretirement Benefits Year Ended March 31, 2018 Year Ended March 31, 2017 Year Ended March 31, 2018 Year Ended March 31, 2017 Benefit obligation at beginning of period $ (665.4 ) $ (674.0 ) $ (25.7 ) $ (29.6 ) Service cost (1.0 ) (1.8 ) — (0.1 ) Interest cost (24.4 ) (25.7 ) (1.0 ) (1.1 ) Actuarial gains 7.3 11.8 2.8 3.7 Benefits paid 41.2 39.8 3.0 3.1 Plan participant contributions (0.1 ) (0.3 ) (0.6 ) (0.6 ) Acquisitions (1) (6.3 ) (18.3 ) — — Contractual termination benefits — (2.2 ) — — Curtailments 0.3 2.5 — (1.1 ) Translation adjustment (10.6 ) 2.8 — — Benefit obligation at end of period $ (659.0 ) $ (665.4 ) $ (21.5 ) $ (25.7 ) Plan assets at the beginning of the period $ 513.0 $ 503.6 $ — $ — Actual return on plan assets 23.6 26.6 — — Contributions 5.9 8.6 3.0 3.1 Benefits paid (41.2 ) (39.8 ) (3.0 ) (3.1 ) Acquisitions (1) 2.3 14.9 — Translation adjustment 3.8 (0.9 ) — Plan assets at end of period $ 507.4 $ 513.0 $ — $ — Funded status of plans $ (151.6 ) $ (152.4 ) $ (21.5 ) $ (25.7 ) Net amount on Consolidated Balance Sheets consists of: Non-current assets $ 0.6 $ 0.6 $ — $ — Current liabilities (2.4 ) (2.2 ) (2.1 ) (2.1 ) Long-term liabilities (149.8 ) (150.8 ) (19.4 ) (23.6 ) Total net funded status $ (151.6 ) $ (152.4 ) $ (21.5 ) $ (25.7 ) (1) Includes the acquisition of Centa and Cambridge during fiscal 2018 and 2017, respectively. See Note 3 Acquisitions for additional information. As of March 31, 2018 , the Company had pension plans with a combined projected benefit obligation of $659.0 million compared to plan assets of $507.4 million , resulting in an under-funded status of $151.6 million compared to an under-funded status of $152.4 million at March 31, 2017 . The Company’s funded status has improved year over year primarily due to increased funding coupled with actuarial gains resulting from a shorter life expectancy assumption partially offset by actuarial losses due to lower interest rates and less favorable asset return. Any further changes in the assumptions underlying the Company’s pension values, including those that arise as a result of declines in equity markets and changes in interest rates, could result in increased pension obligation and pension cost which could negatively affect the Company’s consolidated financial position and results of operations in future periods. Amounts included in accumulated other comprehensive loss (income), net of tax, related to defined benefit plans at March 31, 2018 and 2017 consist of the following (in millions): As of March 31, 2018 Pension Benefits Postretirement Benefits Total Unrecognized prior service credit $ (0.2 ) $ (1.2 ) $ (1.4 ) Unrecognized actuarial loss (gain) 46.2 (1.7 ) 44.5 Accumulated other comprehensive loss (income), gross 46.0 (2.9 ) 43.1 Deferred income tax (benefit) provision (15.9 ) 1.0 (14.9 ) Accumulated other comprehensive loss (income), net $ 30.1 $ (1.9 ) $ 28.2 As of March 31, 2017 Pension Benefits Postretirement Benefits Total Unrecognized prior service credit $ (0.1 ) $ (3.1 ) $ (3.2 ) Unrecognized actuarial loss (gain) 49.4 (0.8 ) 48.6 Accumulated other comprehensive loss (income), gross 49.3 (3.9 ) 45.4 Deferred income tax (benefit) provision (18.7 ) 1.5 (17.2 ) Accumulated other comprehensive loss (income), net $ 30.6 $ (2.4 ) $ 28.2 The Company expects to recognize zero and $1.2 million of prior service costs (credits) included in accumulated other comprehensive (loss) income for pension benefits and other postretirement benefits, respectively, as components of net periodic benefit cost during the next fiscal year. The following table presents significant assumptions used to determine benefit obligations and net periodic benefit cost (income) in weighted-average percentages: Pension Benefits Other Postretirement Benefits March 31, 2018 March 31, 2017 March 31, 2016 March 31, 2018 March 31, 2017 March 31, 2016 Benefit Obligations: Discount rate 3.7 % 3.9 % 3.8 % 4.0 % 4.0 % 3.9 % Rate of compensation increase 2.9 % 3.0 % 3.1 % n/a n/a n/a Net Periodic Benefit Cost: Discount rate 3.9 % 3.8 % 3.7 % 4.0 % 3.9 % 3.8 % Rate of compensation increase 3.0 % 3.0 % 3.4 % n/a n/a n/a Expected return on plan assets 5.3 % 5.3 % 5.3 % n/a n/a n/a In evaluating the expected return on plan assets, consideration was given to historical long-term rates of return on plan assets and input from the Company’s pension fund consultant on asset class return expectations, long-term inflation and current market conditions. The following table presents the Company’s target investment allocations for the year ended March 31, 2018 and actual investment allocations at March 31, 2018 and 2017 . Plan Assets 2018 2017 Investment Policy (1) Target Allocation (2) Actual Allocation Actual Allocation Equity securities 20 - 30% 29% 28% 30% Debt securities (including cash and cash equivalents) 55 - 80% 65% 65% 64% Other 0 - 10% 6% 7% 6% (1) The investment policy allocation represents the guidelines of the Company's principal U.S. pension plans based on the changes in the plans funded status. (2) The target allocations represent the weighted average target allocations for the Company's principal U.S. pension plans. The Company's defined benefit pension utilizes a dynamic liability driven investment (“LDI”) strategy. The objective is to more closely align the pension plan assets with its liabilities in terms of how both respond to interest rate changes. The plan assets are allocated into two investment categories: (i) LDI, comprised of high quality, investment grade fixed income securities and (ii) return seeking, comprised of traditional securities and alternative asset classes. All assets are managed externally according to guidelines established individually with investment managers and the Company's investment consultant. The Company periodically undertakes asset and liability modeling studies to determine the appropriateness of the investments. The Company intends to continuously reduce the assets allocated to the return seeking category, thereby increasing the assets allocated to the LDI category based on the overall improvement in the plan funded status. No equity securities of the Company are held in the portfolio. The fair values of the Company’s pension plan assets for both the U.S and non-U.S. plans at March 31, 2018 and 2017 , by asset category are included in the table below (in millions). For additional information on the fair value hierarchy and the inputs used to measure fair value, see Note 13 Fair Value Measurements. As of March 31, 2018 Quoted Prices in Active Market (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets measured at net asset value (1) Total Cash and cash equivalents $ 2.2 $ — $ — $ 3.7 $ 5.9 Investment funds Fixed income funds (2) 10.7 — — 317.3 328.0 U.S. equity funds (3) 2.3 — — 59.6 61.9 International equity funds (3) 0.3 — — 35.6 35.9 Balanced funds (3) — — — 9.5 9.5 Alternative investment funds (4) — — — 36.0 36.0 Insurance contracts — — 30.2 — 30.2 Total $ 15.5 $ — $ 30.2 $ 461.7 507.4 As of March 31, 2017 Quoted Prices in Active Market (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets measured at net asset value (1) Total Cash and cash equivalents $ 2.0 $ — $ — $ 4.5 $ 6.5 Investment funds Fixed income funds (2) 8.8 — — 317.5 326.3 U.S. equity funds (3) 3.7 — — 65.2 68.9 International equity funds (3) 2.0 — — 38.5 40.5 Balanced funds (3) — — — 9.3 9.3 Alternative investment funds (4) — — — 37.6 37.6 Insurance contracts — — 23.9 — 23.9 Total $ 16.5 $ — $ 23.9 $ 472.6 513.0 (1) In accordance with Subtopic 820-10, certain investments that are measured at fair value using the net asset value per share (or its equivalent) practical expedient have not been classified in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the amounts presented in the statement of financial position. (2) The Company's fixed income mutual and commingled funds primarily include investments in U.S. government securities and corporate bonds. The commingled funds also include an insignificant portion of investments in asset-backed securities or partnerships. The mutual and commingled funds are primarily valued using the net asset value, which reflects the plan's share of the fair value of the investments. (3) The Company's equity mutual and commingled funds primarily include investments in U.S. and international common stock. The balanced mutual and commingled funds invest in a combination of fixed income and equity securities. The mutual and commingled funds are primarily valued using the net asset value, which reflects the plan's share of the fair value of the investments. (4) The Company's alternative investments include venture capital and partnership investments. Alternative investments are valued using the net asset value, which reflects the plan's share of the fair value of the investments. The Company is generally able to redeem investments at periodic times during the year with notice provided to the general partner. The table below sets forth a summary of changes in the fair value of the Level 3 investments for the years ended March 31, 2018 and 2017 (in millions): Insurance Contracts Ending balance, March 31, 2016 $ 22.6 Actual return on assets: Related to assets held at reporting date 1.3 Related to assets sold during the period — Purchases, sales, issuances and settlements — Ending balance, March 31, 2017 23.9 Actual return on assets: Related to assets held at reporting date 3.9 Related to assets acquired by acquisition (1) 2.4 Related to assets sold during the period — Purchases, sales, issuances and settlements — Ending balance, March 31, 2018 $ 30.2 (1) Relates to the assets acquired in connection with the Company's acquisition of Centa during fiscal 2018. See Note 3 Acquisitions for additional information. Expected benefit payments to be paid in each of the next five fiscal years and in the aggregate for the five fiscal years thereafter are as follows (in millions): Year Ending March 31: Pension Benefits Other Postretirement Benefits 2019 $ 41.2 $ 2.1 2020 41.3 2.2 2021 41.1 2.1 2022 41.0 1.9 2023 40.8 1.7 2024-2028 200.0 7.1 Pension Plans That Are Not Fully Funded At March 31, 2018 , the projected benefit obligation, accumulated benefit obligation and fair value of plan assets for the pension plans with accumulated benefit obligations in excess of the fair value of plan assets were $625.0 million , $620.0 million and $472.8 million , respectively. At March 31, 2017 , the projected benefit obligation, accumulated benefit obligation and fair value of plan assets for the pension plans with accumulated benefit obligations in excess of the fair value of plan assets were $658.9 million , $652.2 million and $506.1 million , respectively. Other Postretirement Benefits The other postretirement benefit obligation was determined using an assumed health care cost trend rate of 6.5% in fiscal 2018 grading down to 5.0% in fiscal 2024 and thereafter. The discount rate, compensation rate increase and health care cost trend rate assumptions are determined as of the measurement date. Assumed health care cost trend rates have a significant effect on amounts reported for the retiree medical plans. A one-percentage point change in assumed health care cost trend rates would have the following effect (in millions): One Percentage Point Increase One Percentage Point Decrease Year Ended March 31, Year Ended March 31, 2018 2017 2016 2018 2017 2016 Increase (decrease) in total of service and interest cost components $ 0.1 $ 0.1 $ 0.1 $ (0.1 ) $ (0.1 ) $ (0.1 ) Increase (decrease) in postretirement benefit obligation 1.5 2.1 2.6 (1.3 ) (1.8 ) (2.2 ) Multi-Employer and Government-sponsored Plans The Company participates in certain multi-employer and government-sponsored plans for eligible employees. As of March 31, 2017, the Company no longer has any employees participating in multi-employer and government-sponsored plans. Expense recognized related to these plans during each of the years ended March 31, 2017 and 2016 was $0.2 million and $0.2 million , respectively. Defined Contribution Savings Plans The Company sponsors certain defined-contribution savings plans for eligible employees. Expense recognized related to these plans was $15.0 million , $12.4 million , and $14.2 million for the years ended March 31, 2018 , 2017 and 2016 , respectively. Deferred Compensation Plan The Company has a nonqualified deferred compensation plan for certain executives and other highly compensated employees. Assets are invested primarily in mutual funds and corporate-owned life insurance contracts held in a Rabbi trust and restricted for payments to participants of the plan. The assets and liabilities are classified as other assets and other liabilities, respectively, on the consolidated balance sheets. Changes in the values of the assets held by the rabbi trust and changes in the value of the deferred compensation liability are recorded in other income (expense), net in the consolidated statements of operations. The fair values of the Company’s deferred compensation plan assets and liability are included in the table below (in millions). For additional information on the fair value hierarchy and the inputs used to measure fair value, see Note 13 Fair Value Measurements. Fair Value as of March 31, 2018 Quoted Prices in Significant Other Significant Total Deferred compensation plan assets: Mutual funds (1) $ 1.6 $ — $ — $ 1.6 Corporate-owned life insurance policies (2) — 1.9 — 1.9 Total assets at fair value $ 1.6 $ 1.9 $ — $ 3.5 Deferred compensation liability at fair value (3): $ 3.5 $ — $ — $ — Fair Value as of March 31, 2017 Quoted Prices in Significant Other Significant Total Deferred compensation plan assets: Mutual funds (1) $ 1.4 $ — $ — $ 1.4 Total assets at fair value $ 1.4 $ — $ — $ 1.4 Deferred compensation liability at fair value (3): $ 1.4 $ — $ — $ 1.4 (1) The Company has elected to use the fair value option for the mutual funds to better align the measurement of the assets with the measurement of the liability, which are measured using quoted prices of identical instruments in active markets and are categorized as Level 1. (2) The corporate-owned life insurance contracts are recorded at cash surrender value, which is provided by a third party and reflects the net asset value of the underlying publicly traded mutual funds, and are categorized as Level 2. (3) The deferred compensation liability is measured at fair value based on the quoted prices of identical instruments to the investment vehicles selected by the participants.

Income Taxes

Income Taxes	12 Months Ended
	Mar. 31, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The provision for income taxes consists of amounts for taxes currently payable, amounts for tax items deferred to future periods; as well as, adjustments relating to the Company’s determination of uncertain tax positions, including interest and penalties. The Company recognizes deferred tax assets and liabilities based on the future tax consequences attributable to tax net operating loss (“NOL”) carryforwards, tax credit carryforwards and differences between the financial statement carrying amounts and the tax bases of applicable assets and liabilities. Deferred tax assets are regularly reviewed for recoverability and valuation allowances are established based on historical losses, projected future taxable income and the expected timing of the reversals of existing temporary differences. As a result of this review, the Company continues to maintain a partial valuation allowance against certain foreign NOL carryforwards and other related foreign deferred tax assets, as well as certain state NOL carryforwards. On December 22, 2017, the U.S. enacted the Tax Cuts and Jobs Act (“U.S. Tax Reform”). U.S. Tax Reform incorporates significant changes to U.S. corporate income tax laws including, among other items, a reduction in the statutory federal corporate income tax rate from 35% to 21%, an exemption for dividends received from certain foreign subsidiaries, a one-time repatriation tax on deemed repatriated earnings from foreign subsidiaries, immediate expensing of certain depreciable tangible assets, limitations on the deduction for net interest expense and certain executive compensation and the repeal of the Domestic Production Activities Deduction (“DPAD”). The majority of these changes are effective for the Company’s fiscal year beginning April 1, 2018. However, the corporate income tax rate reduction is effective January 1, 2018. As such, the Company’s effective statutory federal corporate income tax rate for the tax year ended March 31, 2018 is 31.55% . In addition, the one-time repatriation tax has been recognized by the Company for the tax year ended March 31, 2018. In acknowledgment of the substantial and substantive changes incorporated in U.S. Tax Reform, in conjunction with the timing of the enactment being just weeks before the majority of the provisions became effective, the SEC staff issued Staff Accounting Bulletin (“SAB”) 118 to provide certain guidance in determining the accounting for income tax effects of the legislation in the accounting period of enactment as well as provide a measurement period (similar to that used when accounting for business combinations) within which to finalize and reflect such final effects associated with U.S. Tax Reform. Further, SAB 118 summarizes a three-step approach to be applied each reporting period within the overall measurement period: (1) amounts should be reflected in the period including the date of enactment for those items which are deemed to be complete (i.e. all information is available and appropriately analyzed to determine the applicable financial statement impact), (2) to the extent the effects of certain changes due to U.S. Tax Reform for which the accounting is not deemed complete but for which a reasonable estimate can be determined, such provisional amount(s) should be reflected in the period so determined and adjusted in subsequent periods as such effects are finalized and (3) to the extent a reasonable estimate cannot be determined for a specific effect of the tax law change associated with U.S. Tax Reform, no provisional amount should be recorded but rather, continue to apply ASC 740 based upon the tax law in effect prior to the enactment of U.S. Tax Reform. Such measurement period is deemed to end when all necessary information has been obtained, prepared and analyzed such that a final accounting determination can be concluded, but in no event should the period extend beyond one year. In consideration of this guidance, the Company has obtained, prepared and analyzed various information associated with the enactment of U.S. Tax Reform (including subsequent Internal Revenue Service (“IRS”) Notices, etc.). Based upon this review to date, the Company has recognized an estimated net income tax benefit with respect to U.S. Tax Reform and related guidance for fiscal 2018 of $66.5 million . This net income tax benefit reflects a $66.5 million net estimated income tax benefit associated with the remeasurement of the Company’s net U.S. deferred tax liability (including consideration of executive compensation limitations under U.S. Tax Reform), the one-time repatriation tax of $1.4 million (including state income tax), offset by $1.4 million relating to the remeasurement of unrecognized tax benefits impacted by the one-time repatriation tax. Due to the timing and complexity of the various technical provisions provided for under U.S. Tax Reform, the financial statement impacts recorded for fiscal 2018 relating to U.S. Tax Reform are not deemed to be complete but rather are deemed to be reasonable, provisional estimates based upon the current available information and related interpretations. For example, the Company was required to use estimates for earnings and profits and taxes in conjunction with determining the impact of the one-time repatriation tax. Similarly, due to recent acquisitions, deferred taxes generally remain “open,” such that any purchase accounting entries recorded that impact opening deferred taxes will automatically require a restatement to the 21% statutory federal tax rate (from the 35% rate required to be used for purchase accounting purposes). In addition, in relation to the remeasurement of the Company’s net U.S. deferred tax liability (as well as numerous other aspects of U.S. Tax Reform), the Company had to use judgment based upon currently available guidance and interpretations of such guidance. Future guidance could result in changes to the Company’s current interpretation, and as such, result in changes to previously recorded amounts. Although the Company believes the net income tax benefit recognized for fiscal 2018 outlined above is a reasonable estimate based upon the available information and analysis completed to date, these related amounts will likely change, possibly materially, based upon finalization of actual financial information and as further clarification is provided with respect to the application of various tax law changes incorporated by U.S. Tax Reform. As such, the Company expects to update and finalize the accounting for the tax effect of the enactment of U.S. Tax Reform in future quarters in accordance with the guidance as outlined in SAB 118, as deemed necessary. Lastly, the Company is still evaluating the potential future impact of the global intangible low-taxed income ("GILTI") provisions of U.S. Tax Reform. In accordance with U.S. GAAP, any potential future impacts of GILTI can either be treated as a period expense in the period incurred or considered in the determination of the Company's deferred tax balances. To date, the Company has not made a final accounting policy decision with respect to this item as such decision will be dependent upon further analysis, clarification of GILTI tax provisions under U.S. Tax Reform and potential future changes to the Company's existing legal structure, all of which are currently unknown. As such, the Company's fiscal 2018 financial statements do not reflect any amounts with respect to potential GILTI tax. Income Tax (Benefit) Provision The components of the (benefit) provision for income taxes are as follows (in millions): Year ended March 31, 2018 2017 2016 Current: United States $ 26.7 $ 12.1 $ 24.0 Non-United States 25.5 20.3 15.3 State and local 3.9 2.2 3.9 Total current 56.1 34.6 43.2 Deferred: United States (70.4 ) (18.0 ) (10.2 ) Non-United States (3.0 ) (6.8 ) 1.1 State and local (2.2 ) (1.9 ) (17.0 ) Total deferred (75.6 ) (26.7 ) (26.1 ) (Benefit) Provision for income taxes $ (19.5 ) $ 7.9 $ 17.1 The (benefit) provision for income taxes differs from the United States statutory income tax rate due to the following items (in millions): Year ended March 31, 2018 2017 2016 Provision for income taxes at U.S. federal statutory income tax rate $ 17.8 $ 28.7 $ 30.1 State and local income taxes, net of federal benefit 2.9 0.8 2.7 Net effects of foreign rate differential (2.5 ) (1.3 ) (3.0 ) Net effects of foreign operations (8.4 ) (4.4 ) (2.1 ) Net effect to deferred taxes for U.S. Tax Reform (66.5 ) — — Nondeductible goodwill impairment charges 35.1 — — Unrecognized tax benefits, net of federal benefit 1.1 0.5 (11.3 ) Domestic production activities deduction (3.2 ) (2.7 ) (1.3 ) Research and development credit (0.9 ) (7.6 ) — Excess tax benefits related to equity compensation (0.5 ) (7.0 ) — Changes in valuation allowance 4.8 0.5 2.3 Other 0.8 0.4 (0.3 ) (Benefit) provision for income taxes $ (19.5 ) $ 7.9 $ 17.1 The (benefit) provision for income taxes was calculated based upon the following components of income from continuing operations before income taxes (in millions): Year ended March 31, 2018 2017 2016 United States $ 86.6 $ 50.4 $ 45.3 Non-United States (30.1 ) 31.6 40.7 Income before income taxes $ 56.5 $ 82.0 $ 86.0 Deferred Income Tax Assets and Liabilities Deferred income taxes consist of the tax effects of the following temporary differences (in millions): March 31, 2018 March 31, 2017 Deferred tax assets: Compensation and retirement benefits $ 47.9 $ 79.9 General accruals and reserves 9.2 18.1 State tax net operating loss carryforwards 23.1 19.2 Foreign net operating loss and interest carryforwards 33.3 22.5 Other 1.2 7.9 Total deferred tax assets before valuation allowance 114.7 147.6 Valuation allowance (40.4 ) (27.7 ) Total deferred tax assets 74.3 119.9 Deferred tax liabilities: Property, plant and equipment 37.0 39.9 Inventories 18.1 31.5 Intangible assets and goodwill 153.6 217.5 Cancellation of indebtedness 7.1 27.6 Total deferred tax liabilities 215.8 316.5 Net deferred tax liabilities $ 141.5 $ 196.6 Net amount on Consolidated Balance Sheet consists of: Other assets $ 15.1 $ 12.2 Deferred income taxes (156.6 ) (208.8 ) Net long-term deferred tax liabilities $ (141.5 ) $ (196.6 ) Management has reviewed its deferred tax assets and has analyzed the uncertainty with respect to ultimately realizing the related tax benefits associated with such assets. Based upon this analysis, management has determined that a valuation allowance should be established for certain foreign NOL carryforwards and related deferred tax assets, as well as certain state NOL carryforwards as of March 31, 2018 . Significant factors considered by management in this determination included the historical operating results of the Company, as well as anticipated reversals of future taxable temporary differences. Similarly, a valuation allowance was recorded at March 31, 2018 for certain foreign NOL carryforwards and related deferred tax assets, as well as certain state NOL carryforwards for which utilization was deemed uncertain. The increase in the valuation allowance presented above was generally due to an increase in certain foreign NOL carryforwards and other related deferred tax assets which management has deemed the realization of such assets as not being more-likely-than-not. However, approximately $3.9 million of the $12.7 million increase in the valuation allowance was a result of remeasuring the related, federally tax-effected asset (state NOL carryforwards) from 65% to 79% (i.e. both the state NOL carryforward deferred tax asset and the related valuation allowance increased by $3.9 million ). The carryforward periods for the state NOLs range from five to twenty years. Certain foreign NOL carryforwards are subject to a five year expiration period, and the carryforward period for the remaining foreign NOLs is indefinite. At March 31, 2018 , the Company had approximately $498.2 million of state NOL carryforwards, expiring over various years ending through March 31, 2034. The Company has a valuation allowance of $19.3 million recorded against the related deferred tax asset. In addition, at March 31, 2018 , the Company had approximately $113.2 million of foreign NOL carryforwards in which the majority of these losses can be carried forward indefinitely. There exists a valuation allowance of $21.1 million against these NOL carryforwards as well as other related deferred tax assets. No provision has been made for United States federal income taxes related to approximately $136.0 million of undistributed earnings of foreign subsidiaries considered to be permanently reinvested. Due to the resulting additional foreign tax credits, the additional income tax liability that would result if such earnings were repatriated to the U.S., other than potential out-of-pocket withholding taxes of approximately $6.6 million , would not be expected to be significant to the Company’s consolidated financial statements. The Company’s total liability for net accrued income taxes as of March 31, 2018 and 2017 was $6.0 million and $6.9 million , respectively. This net amount was presented in the consolidated balance sheets as Income taxes payable (separately disclosed in Other current liabilities) of $25.1 million and $17.8 million as of March 31, 2018 and 2017 , respectively; and as Income taxes receivable of $19.1 million and $10.9 million as of March 31, 2018 and 2017 , respectively. Net cash paid for income taxes to governmental tax authorities for the years ended March 31, 2018 , 2017 and 2016 was $60.7 million , $40.0 million and $46.9 million , respectively. Liability for Unrecognized Tax Benefits The Company's total liability for net unrecognized tax benefits as of March 31, 2018 and March 31, 2017 was $20.1 million and $18.1 million , respectively. The following table represents a reconciliation of the beginning and ending amount of the gross unrecognized tax benefits, excluding interest and penalties, for the fiscal years ended March 31, 2018 and March 31, 2017 (in millions): Year Ended March 31, 2018 2017 Balance at beginning of period $ 15.0 $ 13.2 Additions based on tax positions related to the current year 0.8 0.8 Additions for tax positions of prior years — 2.8 Reductions for tax positions of prior years — — Settlements — — Reductions due to lapse of applicable statute of limitations (0.6 ) (1.7 ) Cumulative translation adjustment 0.4 (0.1 ) Balance at end of period $ 15.6 $ 15.0 The Company recognizes accrued interest and penalties related to unrecognized tax benefits in income tax expense. As of March 31, 2018 and March 31, 2017 , the total amount of unrecognized tax benefits includes $5.7 million and $4.7 million of gross accrued interest and penalties, respectively. The amount of interest and penalties recorded as income tax expense (benefit) during the fiscal years ended March 31, 2018 , 2017 , and 2016 was $1.0 million , $0.6 million , and $(8.6) million , respectively. The Company conducts business in multiple locations within and outside the U.S. Consequently, the Company is subject to periodic income tax examinations by domestic and foreign income tax authorities. Currently, the Company is undergoing routine, periodic income tax examinations in both domestic and foreign jurisdictions (including a review of a few specific items on certain corporate income tax returns of the Company’s Netherlands subsidiaries for the tax years ended March 31, 2011 through 2015). In addition, the U.S. Internal Revenue Service is currently examining the Company’s U.S. consolidated federal income tax return and related amended return for the tax year ended March 31, 2015. During the third quarter of fiscal 2017, the Company completed an examination of certain of its Italian subsidiaries’ corporate income tax returns for the tax years ended March 31, 2014 through 2016 and paid approximately $0.7 million upon the conclusion of such examination. In addition, during the fourth quarter of fiscal 2017, the Company completed an examination of certain of its German subsidiaries’ corporate income and trade tax returns for the tax years ended March 31, 2011 through 2014 and paid approximately $0.4 million upon conclusion of such examination. It appears reasonably possible that the amounts of unrecognized income tax benefits could change in the next twelve months upon conclusion of the Company’s current ongoing examinations; however, any potential payments of income tax, interest and penalties are not expected to be significant to the Company's consolidated financial statements. With certain exceptions, the Company is no longer subject to U.S. federal income tax examinations for tax years ending prior to March 31, 2015, state and local income tax examinations for years ending prior to fiscal 2014 or significant foreign income tax examinations for years ending prior to fiscal 2013. With respect to the Company's U.S. federal NOL carryforward (which was fully utilized for the tax year ended March 31, 2015), the short tax period from July 21, 2006 to March 31, 2007 (due to a prior change in control of the Company) and the tax years ended March 31, 2008 through March 31, 2013 are open under statutes of limitations; whereby, the Internal Revenue Service may not adjust the income tax liability for these years, but may reduce the NOL carryforward and any other tax attribute carryforwards to currently open tax years.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Mar. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Contingencies: The Company's subsidiaries are involved in various unresolved legal actions, administrative proceedings and claims in the ordinary course of business involving, among other things, product liability, commercial, employment, workers' compensation, intellectual property claims and environmental matters. The Company establishes accruals in a manner that is consistent with accounting principles generally accepted in the United States for costs associated with such matters when liability is probable and those costs are capable of being reasonably estimated. Although it is not possible to predict with certainty the outcome of these unresolved legal actions or the range of possible loss or recovery, based upon current information, management believes the eventual outcome of these unresolved legal actions, either individually or in the aggregate, will not have a material adverse effect on the financial position, results of operations or cash flows of the Company. In connection with its sale, Invensys plc ("Invensys") provided the Company with indemnification against certain contingent liabilities, including certain pre-closing environmental liabilities. The Company believes that, pursuant to such indemnity obligations, Invensys is obligated to defend and indemnify the Company with respect to the matters described below relating to the Ellsworth Industrial Park Site and to various asbestos claims. The indemnity obligations relating to the matters described below are subject, together with indemnity obligations relating to other matters, to an overall dollar cap equal to the purchase price, which is an amount in excess of $900 million . The following paragraphs summarize the most significant actions and proceedings: • In 2002, Rexnord Industries, LLC (“Rexnord Industries”) was named as a potentially responsible party (“PRP”), together with at least ten other companies, at the Ellsworth Industrial Park Site, Downers Grove, DuPage County, Illinois (the “Site”), by the United States Environmental Protection Agency (“USEPA”), and the Illinois Environmental Protection Agency (“IEPA”). Rexnord Industries' Downers Grove property is situated within the Ellsworth Industrial Complex. The USEPA and IEPA allege there have been one or more releases or threatened releases of chlorinated solvents and other hazardous substances, pollutants or contaminants, allegedly including but not limited to a release or threatened release on or from the Company's property, at the Site. The relief sought by the USEPA and IEPA includes further investigation and potential remediation of the Site and reimbursement of USEPA's past costs. Rexnord Industries' allocated share of past and future costs related to the Site, including for investigation and/or remediation, could be significant. All previously pending property damage and personal injury lawsuits against the Company related to the Site have been settled or dismissed. Pursuant to its indemnity obligation, Invensys continues to defend the Company in known matters related to the Site and has paid 100% of the costs to date. • Multiple lawsuits (with approximately 300 claimants) are pending in state or federal court in numerous jurisdictions relating to alleged personal injuries due to the alleged presence of asbestos in certain brakes and clutches previously manufactured by the Company's Stearns division and/or its predecessor owners. Invensys and FMC, prior owners of the Stearns business, have paid 100% of the costs to date related to the Stearns lawsuits. Similarly, the Company's Prager subsidiary is a defendant in two pending multi-defendant lawsuits relating to alleged personal injuries due to the alleged presence of asbestos in a product allegedly manufactured by Prager. Additionally, there are numerous individuals who have filed asbestos related claims against Prager; however, these claims are currently on the Texas Multi-district Litigation inactive docket. The ultimate outcome of these asbestos matters cannot presently be determined. To date, the Company's insurance providers have paid 100% of the costs related to the Prager asbestos matters. The Company believes that the combination of its insurance coverage and the Invensys indemnity obligations will cover any future costs of these matters. In connection with the Company's acquisition of The Falk Corporation (“Falk”), Hamilton Sundstrand provided the Company with indemnification against certain products-related asbestos exposure liabilities. The Company believes that, pursuant to such indemnity obligations, Hamilton Sundstrand is obligated to defend and indemnify the Company with respect to the asbestos claims described below, and that, with respect to these claims, such indemnity obligations are not subject to any time or dollar limitations. The following paragraph summarizes the most significant actions and proceedings for which Hamilton Sundstrand has accepted responsibility: • Falk, through its successor entity, is a defendant in multiple lawsuits pending in state or federal court in numerous jurisdictions relating to alleged personal injuries due to the alleged presence of asbestos in certain clutches and drives previously manufactured by Falk. There are approximately 100 claimants in these suits. The ultimate outcome of these lawsuits cannot presently be determined. Hamilton Sundstrand is defending the Company in these lawsuits pursuant to its indemnity obligations and has paid 100% of the costs to date. Certain Water Management subsidiaries are also subject to asbestos litigation. As of March 31, 2018 , Zurn and numerous other unrelated companies were defendants in approximately 6,400 asbestos related lawsuits representing approximately 16,200 claims. Plaintiffs' claims allege personal injuries caused by exposure to asbestos used primarily in industrial boilers formerly manufactured by a segment of Zurn. Zurn did not manufacture asbestos or asbestos components. Instead, Zurn purchased them from suppliers. These claims are being handled pursuant to a defense strategy funded by insurers. As of March 31, 2018 , the Company estimates the potential liability for the asbestos-related claims described above as well as the claims expected to be filed in the next ten years to be approximately $38.0 million of which Zurn expects its insurance carriers to pay approximately $29.0 million in the next ten years on such claims, with the balance of the estimated liability being paid in subsequent years. The $38.0 million was developed based on actuarial studies and represents the projected indemnity payout for current and future claims. There are inherent uncertainties involved in estimating the number of future asbestos claims, future settlement costs, and the effectiveness of defense strategies and settlement initiatives. As a result, actual liability could differ from the estimate described herein and could be substantial. The liability for the asbestos-related claims is recorded in Other liabilities within the consolidated balance sheets. Management estimates that its available insurance to cover this potential asbestos liability as of March 31, 2018 , is approximately $239.6 million , and believes that all current claims are covered by insurance. However, principally as a result of the past insolvency of certain of the Company's insurance carriers, certain coverage gaps will exist if and after the Company's other carriers have paid the first $163.6 million of aggregate liabilities. As of March 31, 2018 , the Company had a recorded receivable from its insurance carriers of $38.0 million , which corresponds to the amount of this potential asbestos liability that is covered by available insurance and is currently determined to be probable of recovery. However, there is no assurance that $239.6 million of insurance coverage will ultimately be available or that this asbestos liability will not ultimately exceed $239.6 million . Factors that could cause a decrease in the amount of available coverage include: changes in law governing the policies, potential disputes with the carriers regarding the scope of coverage, and insolvencies of one or more of the Company's carriers. The receivable for probable asbestos-related recoveries is recorded in Other assets within the consolidated balance sheets. Certain Company subsidiaries were named as defendants in a number of individual and class action lawsuits in various United States courts claiming damages due to the alleged failure or anticipated failure of Zurn brass fittings on the PEX plumbing systems in homes and other structures. In fiscal 2013, the Company reached a court-approved agreement to settle the liability underlying this litigation. The settlement is designed to resolve, on a national basis, the Company's overall exposure for both known and unknown claims related to the alleged failure or anticipated failure of such fittings, subject to the right of eligible class members to opt-out of the settlement and pursue their claims independently. The settlement utilizes a seven year claims fund, which is capped at $20.0 million , and is funded in installments over the seven year period based on claim activity and minimum funding criteria. The settlement also covers class action plaintiffs' attorneys' fees and expenses. Historically, the Company's insurance carrier had funded the Company's defense in the above referenced proceedings. The Company, however, reached a settlement agreement with its insurer, whereby the insurer paid the Company a lump sum in exchange for a release of future exposure related to this liability. The Company has recorded an accrual related to this brass fittings liability, which takes into account, in pertinent part, the insurance carrier contribution, as well as exposure from the claims fund, opt-outs and the waiver of future insurance coverage. Sale-Leaseback Transaction: During fiscal 2018, the Company entered into a sale-leaseback arrangement for an owned facility in Downer's Grove, Illinois and received net proceeds from the transaction of $5.8 million . Due to the Company's continuing involvement with the construction of a new facility at the same location, the property did not qualify for sale accounting under the sale-leaseback accounting guidance during the construction period and as a result it has been accounted for as a financing transaction, with the $5.8 million of proceeds being classified in the consolidated balance sheets in other current liabilities. The Company will depreciate the carrying value of the building over the expected remaining useful life. No gain or loss was recognized from the transaction. As a result of the Company's anticipated involvement during the construction period of the new manufacturing facility the Company is considered, for accounting purposes only, the owner of the construction asset under build-to-suit lease accounting. Upon completion of construction, the Company will evaluate the de-recognition of the asset and liability under sale-leaseback accounting guidance. As of March 31, 2018 , the Company has recorded a financing lease obligation of $7.5 million associated with the construction asset of the same value.

Public Offering and Common Stoc

Public Offering and Common Stock Repurchases	12 Months Ended
	Mar. 31, 2018
Equity [Abstract]
Public Offering and Common Stock Repurchases	Public Offering and Common Stock Repurchases Preferred Stock On December 7, 2016, the Company issued 8,050,000 depositary shares, each of which represents a 1/20th interest in a share of 5.75% Series A Mandatory Convertible Preferred Stock (the "Series A Preferred Stock"), for an offering price of $50 per depositary share. The Company issued an aggregate of 402,500 shares of Series A Preferred Stock in connection therewith. Unless converted earlier, each share of Series A Preferred Stock will convert automatically on the mandatory conversion date, which is November 15, 2019, into between 39.7020 and 47.6420 shares of the Company’s common stock, subject to customary anti-dilution adjustments. The number of shares of common stock issuable upon conversion will be determined based on a defined average volume weighted average price per share of the Company’s common stock preceding November 15, 2019. Holders of the Series A Preferred Stock may elect on a voluntary basis to convert their shares into common stock at the minimum exchange ratio at any time prior to the mandatory conversion date. Dividends accumulate from the issuance date. Rexnord may pay such dividends in cash or, subject to certain limitations, by delivery of shares of the Company's common stock or through any combination of cash and shares of the Company's common stock as determined by the Company in its sole discretion. Dividends are payable quarterly, commencing on February 15, 2017 and ending on November 15, 2019. Any unpaid dividends will continue to accumulate. The shares of Series A Preferred Stock have a liquidation preference of $1,000 per share, plus accrued dividends. With respect to dividend and liquidation rights, the Series A Preferred Stock ranks senior to the Company's common stock and junior to all existing and future indebtedness. The net proceeds from the offering were approximately $389.7 million . The Company used $195.0 million of the proceeds to prepay a portion of the then-outstanding term loan indebtedness under the Credit Agreement, with the remainder retained for general corporate purposes. The Company accrued $23.2 million and $7.3 million of dividends and paid $23.2 million and $4.4 million in cash related to these dividends during fiscal 2018 and 2017 , respectively. As of March 31, 2018 , there were no dividends in arrears on the Series A Preferred Stock. Issuer Repurchases of Equity Securities During fiscal 2015, the Company's Board of Directors approved a common stock repurchase program (the "Repurchase Program") authorizing the repurchase of up to $200.0 million of the Company's common stock from time to time on the open market or in privately negotiated transactions. The Repurchase Program does not require the Company to acquire any particular amount of common stock and does not specify the timing of purchases or the prices to be paid. No shares of common stock were repurchased in fiscal 2018 or 2017. During fiscal 2016, the Company repurchased 1,552,500 shares of common stock at a total cost of $40.0 million at an average price of $25.76 . The repurchased shares were canceled by the Company upon receipt. At March 31, 2018 , approximately $160.0 million of repurchase authority remained.

Business Segment Information

Business Segment Information	12 Months Ended
	Mar. 31, 2018
Segment Reporting [Abstract]
Business Segment Information	Business Segment Information The results of operations are reported in two business segments, consisting of the Process & Motion Control platform and the Water Management platform. The Process & Motion Control platform designs, manufactures, markets and services a comprehensive range of specified, highly-engineered mechanical components used within complex systems where our customers' reliability requirements and costs of failure or downtime are high. The Process & Motion Control portfolio includes motion control products, shaft management products, aerospace components, and related value-added services. Products and services are marketed and sold globally under widely recognized brand names, including Rexnord, Rex, FlatTop, Falk, Link-Belt, Cambridge, and Centa. Process & Motion Control products and services are sold into a diverse group of attractive end markets, including food and beverage, aerospace, mining, petrochemical, energy and power generation, cement and aggregates, forest and wood products, agriculture, and general industrial and automation applications. The Water Management platform designs, procures, manufactures, and markets products that provide and enhance water quality, safety, flow control and conservation. The Water Management product portfolio includes professional grade water control and safety, water distribution and drainage, finish plumbing, and site works products for primarily nonresidential buildings and flow control products for water and wastewater treatment infrastructure markets. Products are marketed and sold under widely recognized brand names, including Zurn, Wilkins, World Dryer, and VAG. The financial information of the Company's segments is regularly evaluated by the chief operating decision maker in determining resource allocation and assessing performance. Management evaluates the performance of each business segment based on its operating results. The same accounting policies are used throughout the organization (see Note 2 Significant Accounting Policies). Business Segment Information: (in Millions) Year Ended March 31, 2018 March 31, 2017 March 31, 2016 Net sales by product Process & Motion Control: Original equipment manufacturers/ end-users $ 690.5 $ 594.6 $ 572.3 Maintenance, repair, and operations 550.7 540.1 528.0 Total Process & Motion Control 1,241.2 1,134.7 1,100.3 Water Management: Water safety, quality, flow control and conservation 566.9 538.9 534.1 Water infrastructure 257.9 244.6 289.4 Total Water Management 824.8 783.5 823.5 Consolidated net sales 2,066.0 1,918.2 1,923.8 Income (loss) from operations Process & Motion Control 193.8 134.9 146.8 Water Management (3.0 ) 85.1 72.8 Corporate (43.7 ) (36.3 ) (45.3 ) Consolidated income from operations 147.1 183.7 174.3 Non-operating expense: Interest expense, net (75.6 ) (88.7 ) (91.4 ) Loss on the extinguishment of debt (11.9 ) (7.8 ) — Other (expense) income, net (3.1 ) (5.2 ) 3.1 Income from continuing operations before income taxes 56.5 82.0 86.0 (Benefit) provision for income taxes (19.5 ) 7.9 17.1 Net income from continuing operations 76.0 74.1 68.9 Loss from discontinued operations, net of tax — — (1.4 ) Net income 76.0 74.1 67.5 Non-controlling interest income (loss) 0.1 — (0.4 ) Net income attributable to Rexnord 75.9 74.1 67.9 Dividends on preferred stock (23.2 ) (7.3 ) — Net income attributable to Rexnord common stockholders $ 52.7 $ 66.8 $ 67.9 Depreciation and Amortization Process & Motion Control $ 56.0 $ 69.9 $ 77.3 Water Management 33.7 35.5 38.1 Consolidated $ 89.7 $ 105.4 $ 115.4 Capital Expenditures Process & Motion Control $ 34.2 $ 42.0 $ 43.6 Water Management 6.5 12.5 8.5 Consolidated $ 40.7 $ 54.5 $ 52.1 March 31, 2018 March 31, 2017 March 31, 2016 Total Assets Process & Motion Control $ 2,598.8 $ 2,671.4 $ 2,412.7 Water Management 820.9 862.3 933.2 Corporate 4.0 5.6 8.9 Consolidated $ 3,423.7 $ 3,539.3 $ 3,354.8 Net sales to third parties and long-lived assets by geographic region are as follows (in millions): Net Sales Long-lived Assets Year Ended March 31, 2018 Year Ended March 31, 2017 Year Ended March 31, 2016 March 31, 2018 March 31, 2017 March 31, 2016 United States $ 1,392.8 $ 1,320.3 $ 1,306.9 $ 264.7 $ 267.2 $ 276.0 Europe 381.6 332.6 370.8 127.9 72.2 80.5 Rest of World 291.6 265.3 246.1 63.8 61.5 40.7 $ 2,066.0 $ 1,918.2 $ 1,923.8 $ 456.4 $ 400.9 $ 397.2 Net sales to third parties are attributed to the geographic regions based on the country in which the shipment originates. Amounts attributed to the geographic regions for long-lived assets are based on the location of the entity that holds such assets. In accordance with ASC 280, Segment Reporting , long-lived assets includes movable assets and excludes net intangible assets and goodwill.

Quarterly Results of Operations

Quarterly Results of Operations (unaudited)	12 Months Ended
	Mar. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Quarterly Results of Operations (unaudited)	Quarterly Results of Operations (unaudited) (in millions, except per share amounts) Fiscal 2018 First Quarter Second Quarter Third Quarter Fourth Quarter Total Net sales $ 487.7 $ 510.8 $ 492.3 $ 575.2 $ 2,066.0 Gross profit 176.0 188.3 182.9 209.7 756.9 Net income (loss) attributable to Rexnord 26.5 29.8 81.6 (62.0 ) 75.9 Dividends on preferred stock (5.8 ) (5.8 ) (5.8 ) (5.8 ) (23.2 ) Net income (loss) attributable to Rexnord common stockholders $ 20.7 $ 24.0 $ 75.8 $ (67.8 ) $ 52.7 Net income (loss) per share attributable to Rexnord common stockholders Basic $ 0.20 $ 0.23 $ 0.73 $ (0.65 ) $ 0.51 Diluted $ 0.20 $ 0.23 $ 0.67 $ (0.65 ) $ 0.50 Fiscal 2017 First Quarter Second Quarter Third Quarter Fourth Quarter Total Net sales $ 471.8 $ 491.0 $ 451.8 $ 503.6 $ 1,918.2 Gross profit 165.4 174.0 153.0 175.6 668.0 Net income attributable to Rexnord 18.9 24.6 3.2 27.4 74.1 Dividends on preferred stock — — (1.5 ) (5.8 ) (7.3 ) Net income attributable to Rexnord common stockholders $ 18.9 $ 24.6 $ 1.7 $ 21.6 $ 66.8 Net income per share attributable to Rexnord common stockholders Basic $ 0.19 $ 0.24 $ 0.02 $ 0.21 $ 0.65 Diluted $ 0.18 $ 0.24 $ 0.02 $ 0.21 $ 0.64

Guarantor Subsidiaries

Guarantor Subsidiaries	12 Months Ended
	Mar. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Guarantor Subsidiaries	Guarantor Subsidiaries The following schedules present condensed consolidating financial information of the Company as of March 31, 2018 and 2017, and for the twelve-month periods ended March 31, 2018 , 2017 and 2016 for (a) Rexnord Corporation, the parent company (the "Parent") (b) RBS Global, Inc. and its wholly-owned subsidiary Rexnord LLC, which together are co-issuers (the “Issuers”) of the outstanding Notes; (c) on a combined basis, the domestic subsidiaries of the Company, all of which are wholly-owned by the Issuers (collectively, the “Guarantor Subsidiaries”) and guarantors of those Notes; and (d) on a combined basis, the foreign subsidiaries of the Company (collectively, the “Non-Guarantor Subsidiaries”). Separate financial statements of the Guarantor Subsidiaries are not presented because their guarantees of the Notes are full, unconditional and joint and several, and the Company believes separate financial statements and other disclosures regarding the Guarantor Subsidiaries are not material to investors. Condensed Consolidating Balance Sheets March 31, 2018 (in millions) Parent Issuers Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Assets Current assets: Cash and cash equivalents $ — $ — $ 40.9 $ 176.7 $ — $ 217.6 Receivables, net — — 206.5 166.7 — 373.2 Inventories, net — 201.1 143.7 — 344.8 Income tax receivable 7.4 — 5.7 6.0 — 19.1 Other current assets — — 12.2 30.8 — 43.0 Total current assets 7.4 — 466.4 523.9 — 997.7 Property, plant and equipment, net — — 253.9 202.5 — 456.4 Intangible assets, net — — 443.1 134.4 — 577.5 Goodwill — — 1,010.6 265.5 — 1,276.1 Investment in: Issuer subsidiaries 1,177.5 — — — (1,177.5 ) — Guarantor subsidiaries — 3,053.3 — — (3,053.3 ) — Non-guarantor subsidiaries — — 602.3 — (602.3 ) — Other assets 40.6 1.3 34.1 40.0 — 116.0 Total assets $ 1,225.5 $ 3,054.6 $ 2,810.4 $ 1,166.3 $ (4,833.1 ) $ 3,423.7 Liabilities and stockholders' equity Current liabilities: Current portion of long-term debt $ — $ — $ 0.1 $ 3.8 $ — $ 3.9 Trade payables — — 130.4 95.6 — 226.0 Compensation and benefits — — 42.0 28.0 — 70.0 Current portion of pension and postretirement benefit obligations — — 2.4 2.1 — 4.5 Other current liabilities 3.0 9.4 77.9 59.5 — 149.8 Total current liabilities 3.0 9.4 252.8 189.0 — 454.2 Long-term debt — 1,285.8 55.8 10.5 — 1,352.1 Note (receivable from) payable to affiliates, net 9.4 581.2 (845.5 ) 254.9 — — Pension and postretirement benefit obligations — — 114.7 54.5 — 169.2 Deferred income taxes — 0.7 117.1 38.8 — 156.6 Other liabilities 0.3 — 62.2 16.3 — 78.8 Total liabilities 12.7 1,877.1 (242.9 ) 564.0 — 2,210.9 Total stockholders' equity 1,212.8 1,177.5 3,053.3 602.3 (4,833.1 ) 1,212.8 Total liabilities and stockholders' equity $ 1,225.5 $ 3,054.6 $ 2,810.4 $ 1,166.3 $ (4,833.1 ) $ 3,423.7 Condensed Consolidating Balance Sheets March 31, 2017 (in millions) Parent Issuers Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Assets Current assets: Cash and cash equivalents $ 4.9 $ 0.1 $ 253.3 $ 231.8 $ — $ 490.1 Receivables, net — — 191.3 131.6 — 322.9 Inventories, net — — 223.8 91.1 — 314.9 Income tax receivable 4.4 — 1.1 5.4 — 10.9 Other current assets — — 9.9 29.4 — 39.3 Total current assets 9.3 0.1 679.4 489.3 — 1,178.1 Property, plant and equipment, net — — 255.3 145.6 — 400.9 Intangible assets, net — — 441.9 116.7 — 558.6 Goodwill — — 996.8 321.4 — 1,318.2 Investment in: Issuer subsidiaries 1,020.1 — — — (1,020.1 ) — Guarantor subsidiaries — 2,835.2 — — (2,835.2 ) — Non-guarantor subsidiaries — — 602.2 — (602.2 ) — Other assets 22.6 1.8 46.8 12.3 — 83.5 Total assets $ 1,052.0 $ 2,837.1 $ 3,022.4 $ 1,085.3 $ (4,457.5 ) $ 3,539.3 Liabilities and stockholders' equity Current liabilities: Current portion of long-term debt $ — $ 16.1 $ 0.4 $ — $ — $ 16.5 Trade payables — — 120.3 77.5 — 197.8 Compensation and benefits — — 32.4 21.9 — 54.3 Current portion of pension and postretirement benefit obligations — — 2.4 1.9 — 4.3 Other current liabilities — 5.7 76.4 45.3 — 127.4 Total current liabilities — 21.8 231.9 146.6 — 400.3 Long-term debt — 1,568.4 37.7 0.1 — 1,606.2 Note (receivable from) payable to affiliates, net (18.7 ) 215.5 (442.2 ) 245.4 — — Pension and postretirement benefit obligations — — 124.6 49.8 — 174.4 Deferred income taxes — 1.0 175.7 32.1 — 208.8 Other liabilities 0.1 10.3 59.5 9.1 — 79.0 Total liabilities (18.6 ) 1,817.0 187.2 483.1 — 2,468.7 Total stockholders' equity 1,070.6 1,020.1 2,835.2 602.2 (4,457.5 ) 1,070.6 Total liabilities and stockholders' equity $ 1,052.0 $ 2,837.1 $ 3,022.4 $ 1,085.3 $ (4,457.5 ) $ 3,539.3 Condensed Consolidating Statements of Operations For the Year Ended March 31, 2018 (in millions) Parent Issuers Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Net sales $ — $ — $ 1,488.6 $ 750.1 $ (172.7 ) $ 2,066.0 Cost of sales — — 936.5 545.3 (172.7 ) 1,309.1 Gross profit — — 552.1 204.8 — 756.9 Selling, general and administrative expenses — — 314.8 134.7 449.5 Restructuring and other similar charges — — 13.5 5.3 18.8 Actuarial gain on pension and postretirement benefit obligations — — (1.8 ) (1.5 ) (3.3 ) Amortization of intangible assets — — 27.0 6.6 33.6 Goodwill impairment — — 24.0 87.2 — 111.2 Income (loss) from operations — — 174.6 (27.5 ) — 147.1 Non-operating (expense) income: Interest income (expense), net: To third parties — (75.3 ) (0.4 ) 0.1 — (75.6 ) To affiliates 3.1 27.4 (13.2 ) (17.3 ) — — Loss on extinguishment of debt — (11.9 ) — — — (11.9 ) Other (expense) income, net — (0.2 ) (9.1 ) 6.2 — (3.1 ) Income (loss) before income taxes from operations 3.1 (60.0 ) 151.9 (38.5 ) — 56.5 (Benefit) provision for income taxes — (4.3 ) (37.8 ) 22.6 — (19.5 ) Income (loss) before equity in income of subsidiaries 3.1 (55.7 ) 189.7 (61.1 ) — 76.0 Equity in earnings (loss) of subsidiaries 72.9 128.6 (61.1 ) — (140.4 ) — Net income (loss) 76.0 72.9 128.6 (61.1 ) (140.4 ) 76.0 Non-controlling interest income — — 0.1 — — 0.1 Net income (loss) attributable to Rexnord 76.0 72.9 128.5 (61.1 ) (140.4 ) 75.9 Dividends on preferred stock (23.2 ) — — — — (23.2 ) Net income (loss) attributable to Rexnord common stockholders 52.8 72.9 128.5 (61.1 ) (140.4 ) 52.7 Comprehensive income (loss) $ 76.0 $ 88.9 $ 131.4 $ (17.0 ) $ (140.4 ) $ 138.9 Condensed Consolidating Statements of Operations For the Year Ended March 31, 2017 (in millions) Parent Issuers Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Net sales $ — $ — $ 1,407.2 $ 626.0 $ (115.0 ) $ 1,918.2 Cost of sales — — 918.5 446.7 (115.0 ) 1,250.2 Gross profit — — 488.7 179.3 — 668.0 Selling, general and administrative expenses — — 294.5 118.7 — 413.2 Restructuring and other similar charges — 28.0 3.6 — 31.6 Actuarial gain on pension and postretirement benefit obligations — — (1.3 ) (1.3 ) — (2.6 ) Amortization of intangible assets — — 35.5 6.6 — 42.1 Income from operations — — 132.0 51.7 — 183.7 Non-operating (expense) income: Interest income (expense), net: To third parties — (88.1 ) (0.5 ) (0.1 ) — (88.7 ) To affiliates 1.1 74.3 (53.4 ) (22.0 ) — — Loss on extinguishment of debt — (7.8 ) — — — (7.8 ) Other expense, net — (0.3 ) (2.1 ) (2.8 ) — (5.2 ) Income (loss) before income taxes from operations 1.1 (21.9 ) 76.0 26.8 — 82.0 Provision (benefit) for income taxes — 0.1 (5.8 ) 13.6 — 7.9 Net income (loss) before equity in loss of subsidiaries 1.1 (22.0 ) 81.8 13.2 — 74.1 Equity in earnings of subsidiaries 73.0 95.0 13.2 — (181.2 ) — Net income from continuing operations 74.1 73.0 95.0 13.2 (181.2 ) 74.1 Loss from discontinued operations — — — — — — Net income 74.1 73.0 95.0 13.2 (181.2 ) 74.1 Non-controlling interest income (loss) — — — — — — Net income attributable to Rexnord 74.1 73.0 95.0 13.2 (181.2 ) 74.1 Dividends on preferred stock (7.3 ) — — — — (7.3 ) Net income attributable to Rexnord common stockholders 66.8 73.0 95.0 13.2 (181.2 ) 66.8 Comprehensive income $ 74.1 $ 77.5 $ 86.0 $ 19.7 $ (181.2 ) $ 76.1 Condensed Consolidating Statements of Operations For the Year Ended March 31, 2016 (in millions) Parent Issuers Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Net sales $ — $ — $ 1,398.3 $ 631.5 $ (106.0 ) $ 1,923.8 Cost of sales — — 927.1 437.5 (106.0 ) 1,258.6 Gross profit — — 471.2 194.0 — 665.2 Selling, general and administrative expenses — — 272.2 113.5 — 385.7 Restructuring and other similar charges — — 24.6 10.3 — 34.9 Actuarial loss (gain) on pension and postretirement benefit obligations — — 13.1 (0.2 ) — 12.9 Amortization of intangible assets — — 50.5 6.9 — 57.4 Income from operations — — 110.8 63.5 — 174.3 Non-operating (expense) income: Interest (expense) income, net: To third parties — (90.4 ) (0.5 ) (0.5 ) — (91.4 ) To affiliates — 66.1 (49.5 ) (16.6 ) — — Loss on extinguishment of debt — — — — — — Other income (expense), net — — 3.7 (0.6 ) — 3.1 (Loss) income before income taxes from operations — (24.3 ) 64.5 45.8 — 86.0 Provision for income taxes — — 0.7 16.4 — 17.1 Net (loss) income before equity in loss of subsidiaries — (24.3 ) 63.8 29.4 — 68.9 Equity in earnings of subsidiaries 67.5 91.8 29.2 — (188.5 ) — Net income from continuing operations 67.5 67.5 93.0 29.4 (188.5 ) 68.9 Loss from discontinued operations — — (1.2 ) (0.2 ) — (1.4 ) Net income 67.5 67.5 91.8 29.2 (188.5 ) 67.5 Non-controlling interest loss — — — (0.4 ) — (0.4 ) Net Income attributable to Rexnord 67.5 67.5 91.8 29.6 (188.5 ) 67.9 Dividends on preferred stock — — — — — — Net income attributable to Rexnord common stockholders 67.5 67.5 91.8 29.6 (188.5 ) 67.9 Comprehensive income $ 67.5 $ 66.6 $ 89.9 $ 23.6 $ (188.5 ) $ 58.7 Condensed Consolidating Statements of Cash Flows For the Year Ended March 31, 2018 (in millions) Parent Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Operating activities Cash provided by (used for) operating activities $ 12.3 $ 313.4 $ (161.2 ) $ 64.0 $ — $ 228.5 Investing activities Expenditures for property, plant and equipment — — (28.4 ) (12.3 ) — (40.7 ) Acquisitions, net of cash — — (50.0 ) (123.6 ) — (173.6 ) Proceeds from dispositions of property, plant and equipment — — 5.3 0.2 — 5.5 Cash used for investing activities — — (73.1 ) (135.7 ) — (208.8 ) Financing activities Proceeds from borrowings of long-term debt — 1,324.0 205.8 — — 1,529.8 Repayments of long-term debt — (1,602.2 ) (189.7 ) — — (1,791.9 ) Repayments of short-term debt — (24.3 ) — — — (24.3 ) Payment of debt issuance costs — (11.0 ) — — — (11.0 ) Proceeds from exercise of stock options 6.0 — — — — 6.0 Proceeds from financing lease obligation — — 5.8 — — 5.8 Payments of dividend on preferred stock (23.2 ) — — — — (23.2 ) Cash (used for) provided by financing activities (17.2 ) (313.5 ) 21.9 — — (308.8 ) Effect of exchange rate changes on cash, cash equivalents and restricted cash — — — 16.6 — 16.6 (Decrease) increase in cash, cash equivalents and restricted cash (4.9 ) (0.1 ) (212.4 ) (55.1 ) — (272.5 ) Cash, cash equivalents and restricted cash at beginning of period 4.9 0.1 253.3 231.8 — 490.1 Cash, cash equivalents and restricted cash at end of period $ — $ — $ 40.9 $ 176.7 $ — $ 217.6 Condensed Consolidating Statements of Cash Flows For the Year Ended March 31, 2017 (in millions) Parent Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Operating activities Net cash (used for) provided by operating activities $ (397.5 ) $ 308.8 $ 215.7 $ 68.1 $ — $ 195.1 Investing activities Expenditures for property, plant and equipment — — (43.3 ) (11.2 ) — (54.5 ) Acquisitions, net of cash — — (213.4 ) (0.3 ) — (213.7 ) Proceeds from dispositions of property, plant and equipment — — 4.2 — — 4.2 Cash used for investing activities — — (252.5 ) (11.5 ) — (264.0 ) Financing activities Proceeds from borrowings of long-term debt — 1,590.3 — — — 1,590.3 Repayments of long-term debt — (1,885.8 ) — — — (1,885.8 ) Proceeds from borrowings of short-term debt — 16.1 — — — 16.1 Repayments of short-term debt — (19.5 ) — — — (19.5 ) Payment of debt issuance costs — (11.8 ) — — — (11.8 ) Deferred acquisition payment — — — (5.7 ) — (5.7 ) Proceeds from issuance of preferred stock, net of direct offering costs 389.7 — — — — 389.7 Payments of dividends on preferred stock (4.4 ) — — — — (4.4 ) Proceeds from exercise of stock options 11.0 — — — — 11.0 Cash provided by (used for) financing activities 396.3 (310.7 ) — (5.7 ) — 79.9 Effect of exchange rate changes on cash, cash equivalents and restricted cash — — — (5.5 ) — (5.5 ) (Decrease) increase in cash, cash equivalents and restricted cash (1.2 ) (1.9 ) (36.8 ) 45.4 — 5.5 Cash, cash equivalents and restricted cash at beginning of period 6.1 2.0 290.1 186.4 — 484.6 Cash, cash equivalents and restricted cash at end of period $ 4.9 $ 0.1 $ 253.3 $ 231.8 $ — $ 490.1 Condensed Consolidating Statements of Cash Flows For the Year Ended March 31, 2016 (in millions) Parent Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Operating activities Net cash provided (used for) by operating activities $ 32.7 $ 26.9 $ 101.9 $ 57.5 $ — $ 219.0 Investing activities Expenditures for property, plant and equipment — — (39.4 ) (12.7 ) — (52.1 ) Acquisitions, net of cash — — — 1.1 — 1.1 Proceeds from dispositions of property, plant and equipment — — 5.8 — — 5.8 Cash used for investing activities — — (33.6 ) (11.6 ) — (45.2 ) Financing activities Proceeds from borrowings of long-term debt — 0.9 — — — 0.9 Repayments of long-term debt — (19.5 ) — — — (19.5 ) Repayments of short-term debt — (5.9 ) — — — (5.9 ) Payment of debt issuance costs — (0.9 ) — — — (0.9 ) Proceeds from exercise of stock options 5.1 — — — — 5.1 Repurchase of Company common stock (40.0 ) — — — — (40.0 ) Excess tax benefit on exercise of stock options — — 4.0 — — 4.0 Cash (used for) provided by financing activities (34.9 ) (25.4 ) 4.0 — — (56.3 ) Effect of exchange rate changes on cash, cash equivalents and restricted cash — — — (3.2 ) — (3.2 ) (Decrease) increase in cash, cash equivalents and restricted cash (2.2 ) 1.5 72.3 42.7 — 114.3 Cash, cash equivalents and restricted cash at beginning of period 8.3 0.5 217.8 143.7 — 370.3 Cash, cash equivalents and restricted cash at end of period $ 6.1 $ 2.0 $ 290.1 $ 186.4 $ — $ 484.6

Schedule II - Valuation and Qua

Schedule II - Valuation and Qualifying Accounts	12 Months Ended
	Mar. 31, 2018
Valuation and Qualifying Accounts [Abstract]
Schedule II - Valuation and Qualifying Accounts	Schedule II – Valuation and Qualifying Accounts (in Millions) Additions Description Balance at Beginning of Year Charged to Costs and Expenses Acquired Obligations Charged to Other Accounts Deductions (1) Balance at End of Year Fiscal Year 2016: Valuation allowance for trade and notes receivable $ 16.8 $ (6.8 ) $ — $ (0.1 ) $ (1.0 ) $ 8.9 Valuation allowance for income taxes 25.0 4.2 — — (2.0 ) 27.2 Fiscal Year 2017: Valuation allowance for trade and notes receivable 8.9 0.7 2.0 — (1.0 ) 10.6 Valuation allowance for income taxes 27.2 4.0 0.2 — (3.7 ) 27.7 Fiscal Year 2018: Valuation allowance for trade and notes receivable 10.6 4.7 0.6 0.2 (3.4 ) 12.7 Valuation allowance for income taxes 27.7 9.8 — 7.9 (5.0 ) 40.4 (1) Uncollectible amounts, dispositions charged against the accrual and utilization of net operating losses. All other schedules have been omitted because they are not applicable or because the information required is included in the notes to the consolidated financial statements.

Significant Accounting Polici32

Significant Accounting Policies (Policies)	12 Months Ended
	Mar. 31, 2018
Accounting Policies [Abstract]
Use of Estimates	Use of Estimates The preparation of financial statements in accordance with GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could differ from those estimates.
Reclassifications	Reclassifications Certain prior year amounts have been reclassified to conform to the fiscal 2018 presentation.
Revenue Recognition	Revenue Recognition Net sales are recorded upon transfer of title and risk of product loss to the customer. Net sales relating to any particular shipment are based upon the amount invoiced for the delivered goods less estimated future rebate payments and sales returns which are based upon the Company’s historical experience. Revisions to these estimates are recorded in the period in which the facts that give rise to the revision become known; historically, revisions to estimates have not been significant. Other than a standard product warranty, there are no other significant post-shipment obligations. The Company classifies shipping and handling fees billed to customers as net sales and the corresponding costs are classified as cost of sales in the consolidated statements of operations.
Stock-Based Compensation	Stock-Based Compensation The Company accounts for stock based compensation in accordance with Accounting Standards Codification ("ASC") 718, Accounting for Stock Compensation ("ASC 718"). ASC 718 requires compensation costs related to stock-based payment transactions to be recognized in the financial statements. Generally, compensation cost is measured based on the grant-date fair value of the equity instruments issued. Compensation cost is recognized over the requisite service period, generally as the awards vest.
Cash and Cash Equivalents	Cash and Cash Equivalents The Company considers all highly liquid investments with a maturity of three months or less to be cash and cash equivalents.
Receivables	Receivables Receivables are stated net of allowances for doubtful accounts of $12.7 million at March 31, 2018 and $10.6 million at March 31, 2017 . The Company evaluates the collectability of its receivables and establishes the allowance for doubtful accounts based on a combination of specific customer circumstances and historical write-off experience. Credit is extended to customers based upon an evaluation of their financial position. Generally, advance payment is not required. Allowances for doubtful accounts established are recorded within Selling, general and administrative expenses within the consolidated statements of operations.
Inventories	Inventories Inventories are comprised of material, direct labor and manufacturing overhead, and are stated at the lower of cost or market. Market is determined based on estimated net realizable values. The Company’s total inventories valued using the “last-in, first-out” (LIFO) method was 51% and 60% at March 31, 2018 and 2017 , respectively. All remaining inventories are valued using the “first-in, first-out” (FIFO) method. In some cases, the Company has determined a certain portion of inventories are excess or obsolete. In those cases, the Company writes down the value of those inventories to their net realizable value based upon assumptions about future demand and market conditions. If actual market conditions are less favorable than those projected by management, adjustments to established inventory reserves may be required.
Property, Plant and Equipment	Property, Plant and Equipment Property, plant and equipment are initially stated at cost. Depreciation is provided using the straight-line method over 10 to 30 years for buildings and improvements, 5 to 10 years for machinery and equipment and 3 to 5 years for computer hardware and software. Where appropriate, the depreciable lives of certain assets may be adjusted to reflect a change in the use of those assets, or depreciation may be accelerated in the case of an eventual asset disposal. The Company recognized accelerated depreciation of $2.3 million , $9.6 million , and $2.5 million during fiscal 2018 , 2017 , and 2016 , respectively. Accelerated depreciation is recorded within Cost of sales in the consolidated statements of operations. Maintenance and repair costs are expensed as incurred.
Goodwill and Intangible Assets	Goodwill and Intangible Assets Intangible assets consist of acquired trademarks and tradenames, customer relationships (including distribution network) and patents. The customer relationships, patents, and certain tradenames are being amortized using the straight-line method over their estimated useful lives of 7 to 20 years, 3 to 15 years, and 3 to 15 years, respectively. Where appropriate, the lives of certain intangible assets may be adjusted to reflect a change in the use of those assets, or amortization may be accelerated in the case of a known intangible asset discontinuation. Goodwill, trademarks and certain tradenames have indefinite lives and are not amortized. However, the goodwill and intangible assets are tested annually for impairment, and may be tested more frequently if any triggering events occur that would reduce the recoverability of the asset. The Company performs its impairment test by comparing the fair value of a reporting unit, utilizing both an income valuation model (discounted cash flow) and market approach (guideline public company comparables), with its carrying amount. If the carrying amount exceeds the fair value of the reporting unit, an impairment charge is recognized for the amount by which the carrying amount exceeds the reporting unit's fair value. In connection with the anticipated divestiture of the VAG operations, the Company recognized a non-cash impairment charge of $111.2 million , representing the entire balance of goodwill within the VAG reporting unit, as of March 31, 2018. See Note 9 Goodwill and Intangible Assets for additional information.
Impairment of Long-Lived Assets	Impairment of Long-Lived Assets The carrying value of long-lived assets, including amortizable intangible assets and tangible fixed assets, are evaluated for impairment whenever events or changes in circumstances indicate that the related carrying amounts may not be recoverable. Impairment of amortizable intangible assets and tangible fixed assets is generally determined by comparing projected undiscounted cash flows to be generated by the asset, or group of assets, to its carrying value. If impairment is identified, a loss is recorded equal to the excess of the asset's net book value over its fair value, and the cost basis is adjusted accordingly. The Company recognized impairment charges in the amount of $0.8 million , $1.5 million and $17.5 million in fiscal 2018, 2017 and 2016, respectively. The impairment was determined utilizing Level 3 inputs within the Fair Value hierarchy, and the Company reviewed and considered input from outside specialists, when appropriate.
Product Warranty	Product Warranty The Company offers warranties on the sales of certain of its products and records an accrual for estimated future claims. Such accruals are based upon historical experience and management’s estimate of the level of future claims.
Income Taxes	Income Taxes The Company accounts for income taxes in accordance with ASC 740, Accounting for Income Taxes (“ASC 740”) . Deferred income taxes are provided for future tax effects attributable to temporary differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases, net operating losses, tax credits and other applicable carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be actually paid or recovered. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in the results of continuing operations in the period that includes the date of enactment. The Company regularly reviews its deferred tax assets for recoverability and provides a valuation allowance against its deferred tax assets if, based upon consideration of all positive and negative evidence, the Company determines that it is more-likely-than-not that a portion or all of the deferred tax assets will ultimately not be realized in future tax periods. Such positive and negative evidence would include review of historical earnings and losses, anticipated future earnings, the time period over which the temporary differences and carryforwards are anticipated to reverse and implementation of feasible, prudent tax planning strategies. The Company is subject to income taxes in the United States and numerous foreign jurisdictions. Significant judgment is required in determining the Company’s worldwide provision for income taxes and recording the related deferred tax assets and liabilities. In the ordinary course of the Company’s business, there is inherent uncertainty in quantifying the ultimate tax outcome of all of the numerous transactions and required calculations relating to the Company’s tax positions. Accruals for unrecognized tax benefits are provided for in accordance with the requirements of ASC 740 . An unrecognized tax benefit represents the difference between the recognition of benefits related to uncertain tax positions for income tax reporting purposes and financial reporting purposes. The Company has established a reserve for interest and penalties, as applicable, for uncertain tax positions and it is recorded as a component of the overall income tax provision. The Company is subject to periodic income tax examinations by domestic and foreign income tax authorities. Although the outcome of income tax examinations is always uncertain, the Company believes that it has appropriate support for the positions taken on its income tax returns and has adequately provided for potential income tax assessments. Nonetheless, the amounts ultimately settled relating to issues raised by the taxing authorities may differ materially from the amounts accrued for each year.
Per Share Data	Per Share Data Basic net income (loss) per share from continuing and discontinued operations attributable to Rexnord common stockholders is computed by dividing net income from continuing operations and loss from discontinued operations attributable to Rexnord common stockholders, respectively, by the corresponding weighted average number of common shares outstanding for the period. Diluted net income (loss) per share from continuing and discontinued operations attributable to Rexnord common stockholders is computed based on the weighted average number of common shares outstanding, increased by the number of incremental shares that would have been outstanding if the potential dilutive shares were issued through the exercise of outstanding stock options to purchase common shares, except when the effect would be anti-dilutive.
Derivative Financial Instruments	Derivative Financial Instruments The Company is exposed to certain financial risks relating to fluctuations in foreign currency exchange rates and interest rates. The Company selectively uses foreign currency forward contracts and interest rate derivatives to manage its foreign currency and interest rate risks. All hedging transactions are authorized and executed pursuant to defined policies and procedures which prohibit the use of financial instruments for speculative purposes. For the derivative instruments designated and qualifying as effective hedging instruments under ASC 815, Accounting for Derivative Instruments and Hedging Activities ("ASC 815") , the changes in the fair value of the effective portion of the instrument are recognized in accumulated other comprehensive loss whereas any changes in the fair value of a derivative instrument that is not designated or does not qualify as an effective hedge are recorded in other non-operating expense. See Note 12 Derivative Financial Instruments for further information regarding the classification and accounting of such instruments. Financial Instrument Counterparties The Company is exposed to credit losses in the event of non-performance by counterparties to its financial instruments. The Company anticipates, however, that counterparties will be able to fully satisfy their obligations under these instruments. The Company places cash and temporary investments and foreign currency and interest rate swap and cap contracts with various high-quality financial institutions. Although the Company does not obtain collateral or other security to support these financial instruments, it does periodically evaluate the credit-worthiness of each of its counterparties.
Foreign Currency Translation	Foreign Currency Translation Assets and liabilities of subsidiaries operating outside of the United States with a functional currency other than the U.S. dollar are translated into U.S. dollars using exchange rates at the end of the respective period. Revenues and expenses of such entities are translated at average exchange rates in effect during the respective period. Foreign currency translation adjustments are included as a component of accumulated other comprehensive loss. The Company periodically enters into foreign currency forward contracts to mitigate foreign currency volatility on certain intercompany and external cash flows expected to occur. See Note 12 Derivative Financial Instruments for additional information.
Advertising Costs	Advertising Costs Advertising costs are charged to selling, general and administrative expenses on the consolidated statements of operations as incurred
Research, Development and Engineering Costs	Research, Development and Engineering Costs Research, development and engineering costs are charged to selling, general and administrative expenses on the consolidated statements of operations as incurred
Concentrations of Credit Risk	Concentrations of Credit Risk Financial instruments that potentially subject the Company to significant concentrations of credit risk consist of cash and temporary investments, forward currency contracts and trade accounts receivable.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In February 2018, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income ("ASU 2018-02"), which gives entities the option to reclassify from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the Tax Cuts and Jobs Act. Consequently, the amendments eliminate the stranded tax effects resulting from the Tax Cuts and Jobs Act and will improve the usefulness of information reported to financial statement users. ASU 2018-02 if effective for the Company's fiscal 2020 and interim periods included therein, and is to be applied either in the period of adoption or on a retrospective basis to each period affected. The Company is currently evaluating the impact of this guidance and has not determined whether it will elect to reclassify stranded amounts; however, the adoption of ASU 2018-02 is not expected to have a material effect on its consolidated financial statements. In August 2017, the FASB issued ASU 2017-12, Derivatives and Hedging - Targeted Improvements to Accounting for Hedging Activities ("ASU 2017-12"), which expands and refines hedge accounting for both non-financial and financial risk components and aligns the recognition and presentation of the effects of the hedging instrument and the hedged item in the financial statements. ASU 2017-12 is effective for the beginning of the Company's fiscal 2020, with early adoption permitted, and must be applied prospectively. The Company is currently evaluating the impact this guidance will have on its consolidated financial statements upon adoption. In March 2017, the FASB issued ASU No. 2017-07, Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost , which changes how employers that sponsor defined benefit pension or other postretirement benefit plans present the net periodic benefit cost in the income statement. The new guidance requires the service cost component of net periodic benefit cost to be presented in the same income statement line item(s) as other employee compensation costs arising from services rendered during the period with only the service cost component eligible for capitalization in assets. Other components of the net periodic benefit cost are to be stated separately from the line item(s) that includes the service cost and outside of operating income. The standard is required to be adopted for annual periods beginning after December 15, 2017, including interim periods within that annual period, which is the Company's fiscal year 2019. The amendment is to be applied retrospectively. The adoption of this standard will not change net income historically reported by the Company. In January 2017, the FASB issued ASU 2017-04, Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment ("ASU 2017-04"). The amendments in ASU 2017-04 allow companies to apply a one-step quantitative test and record the amount of goodwill impairment as the excess of a reporting unit’s carrying amount over its fair value, not to exceed the total amount of goodwill allocated to the reporting unit. ASU 2017-04 is effective for the beginning of the Company's fiscal 2021, with early adoption permitted, and must be applied prospectively. The Company elected to early adopt this standard for the fourth quarter of 2018 in order to simplify the interim and future goodwill impairment assessments, and recognized an impairment charge of $111.2 million in the Water Management segment. Refer to Note 9 Goodwill and Intangible Assets for additional information. In November 2016, the FASB issued ASU No. 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash (“ASU 2016-18”). ASU 2016-18 requires that a statement of cash flows explain the change during the period in the total of cash, cash equivalents and amounts generally described as restricted cash or restricted cash equivalents. As such, restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. The Company elected to early adopt this standard in fiscal 2018. The adoption of this standard had no impact on the Company's consolidated balance sheets or consolidated statements of cash flows. In February 2015, the FASB issued ASU 2016-02, Leases (Topic 842) ("ASU 2016-02''), which requires lessees to recognize lease assets and lease liabilities for all leases on the balance sheets. ASU 2016-02 is effective beginning for the Company's fiscal 2020 and interim periods included therein on a modified retrospective basis. The Company is currently evaluating the impact this guidance will have on its consolidated financial statements upon adoption. In July 2015, the FASB issued ASU No. 2015-11, Simplifying the Measurement of Inventory ("ASU 2015-11"). ASU 2015-11 requires inventory to be measured at the lower of cost and net realizable value, which is defined as the estimated selling price in the ordinary course of business less reasonably predictable costs of completion, disposal and transportation. Under existing guidance, net realizable value is one of several calculations needed to measure inventory at lower of cost or market and as such, the new guidance reduces the complexity in measurement. The Company adopted ASU No. 2015-11 prospectively effective April 1, 2017, and there was no impact to the Company's consolidated financial statements. In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers ("ASU 2014-09") in order to develop a common revenue standard for U.S. GAAP and International Financial Reporting Standards. The guidance specifies revenue should be recognized in an amount that reflects the consideration the company expects to be entitled to in exchange for the transfer of promised goods or services to customers. The guidance provides a five-step process that entities should follow in order to achieve that core principal. ASU 2014-09 is effective for the Company on April 1, 2018. Companies can use either a full retrospective or modified retrospective method to adopt the standard. The Company is adopting the standard using the modified retrospective approach in which prior periods are not updated to reflect the accounting basis required by the new standard, but rather a cumulative adjustment for the effects of applying the new standard to periods prior to fiscal 2019 is recorded to retained earnings as of April 1, 2018. Additionally, ASC 606 will require more comprehensive disclosures about revenue streams and contracts with customers. The Company does not expect the adoption of this standard to impact the Company’s consolidated balance sheets, statements of operations, or cash flows as a result of the adoption

Significant Accounting Polici33

Significant Accounting Policies (Tables)	12 Months Ended
	Mar. 31, 2018
Accounting Policies [Abstract]
Schedule of Product Warranty Liability	The following table presents changes in the Company’s product warranty liability during each of the periods presented (in millions): Year Ended March 31, 2018 Year Ended March 31, 2017 Year Ended March 31, 2016 Balance at beginning of period $ 7.5 $ 6.8 $ 6.8 Acquired obligations 1.4 0.4 — Charged to operations 4.6 3.9 2.8 Claims settled (4.6 ) (3.6 ) (2.8 ) Balance at end of period $ 8.9 $ 7.5 $ 6.8
Schedule of Earnings Per Share, Basic and Diluted	The following table presents the basis for income per share computations (in millions, except share amounts, which are in thousands): Year Ended March 31, 2018 March 31, 2017 March 31, 2016 Numerator: Net income from continuing operations $ 76.0 $ 74.1 $ 68.9 Less: Non-controlling interest income (loss) 0.1 — (0.4 ) Less: Dividends on preferred stock (23.2 ) (7.3 ) — Income from continuing operations attributable to Rexnord common stockholders 52.7 66.8 69.3 Loss from discontinued operations — — (1.4 ) Net income attributable to Rexnord common stockholders $ 52.7 $ 66.8 $ 67.9 Denominator: Weighted average common shares outstanding, basic 103,889 102,753 100,841 Effect of dilutive common shares equivalents 2,110 2,031 2,469 Weighted average common shares outstanding, dilutive 105,999 104,784 103,310
Schedule of Accumulated Other Comprehensive Loss	The changes in accumulated other comprehensive loss, net of tax, for the fiscal years ending March 31, 2018 , 2017 and 2016 are as follows (in millions): Interest Rate Derivatives Foreign Currency Translation Pension and Postretirement Plans Total Balance at March 31, 2015 $ (12.6 ) $ (76.5 ) $ (41.1 ) $ (130.2 ) Other comprehensive (loss) income before reclassifications (4.3 ) (10.0 ) 6.7 (7.6 ) Amounts reclassified from accumulated other comprehensive loss — — (1.2 ) (1.2 ) Net current period other comprehensive (loss) income (4.3 ) (10.0 ) 5.5 (8.8 ) Balance at March 31, 2016 $ (16.9 ) $ (86.5 ) $ (35.6 ) $ (139.0 ) Other comprehensive income (loss) before reclassifications 1.1 (12.8 ) 9.2 (2.5 ) Amounts reclassified from accumulated other comprehensive income (loss) 6.3 — (1.8 ) 4.5 Net current period other comprehensive income (loss) 7.4 (12.8 ) 7.4 2.0 Balance at March 31, 2017 $ (9.5 ) $ (99.3 ) $ (28.2 ) $ (137.0 ) Other comprehensive income before reclassifications — 57.1 1.4 58.5 Amounts reclassified from accumulated other comprehensive income (loss) 5.8 — (1.4 ) 4.4 Net current period other comprehensive income 5.8 57.1 — 62.9 Balance at March 31, 2018 $ (3.7 ) $ (42.2 ) $ (28.2 ) $ (74.1 )
Reclassification out of Accumulated Other Comprehensive Loss	The following table summarizes the amounts reclassified from accumulated other comprehensive loss to net income during the fiscal years ending March 31, 2018 , 2017 and 2016 (in millions): Pension and postretirement plans Year Ending March 31, 2018 Year Ending March 31, 2017 Year Ending March 31, 2016 Income Statement Line Item Amortization of prior service credit $ (1.9 ) $ (1.9 ) $ (1.9 ) Selling, general and administrative expenses Curtailment (0.3 ) (1.0 ) — Actuarial (gain) loss on pension and postretirement benefit obligations Provision for income taxes 0.8 1.1 0.7 Total, net of income taxes $ (1.4 ) $ (1.8 ) $ (1.2 ) Interest rate derivatives Net realized losses on interest rate derivatives $ 9.7 $ 10.2 $ — Interest expense, net Benefit for income taxes (3.9 ) (3.9 ) — Total, net of income taxes $ 5.8 $ 6.3 $ —
Research, Development and Engineering Costs	Research, development and engineering costs are charged to selling, general and administrative expenses on the consolidated statements of operations as incurred and for the years ended March 31, 2018 , 2017 and 2016 amounted to the following (in millions): Year Ended March 31, 2018 Year Ended March 31, 2017 Year Ended March 31, 2016 Research and development costs $ 14.0 $ 11.1 $ 12.4 Engineering costs 25.4 27.2 24.8 Total $ 39.4 $ 38.3 $ 37.2

Discontinued Operations (Tables

Discontinued Operations (Tables)	12 Months Ended
	Mar. 31, 2018
Discontinued Operations and Disposal Groups [Abstract]
Results of Discontinued Operations	The following table summarizes the results of the Mill Products business included within loss from discontinued operations, net of tax on the consolidated statements of operations (in millions): Year Ended March 31, 2016 Net sales $ — Loss from operations before income taxes (2.2 ) Benefit for income taxes (0.8 ) Net loss from discontinued operations $ (1.4 ) Net loss per share from discontinued operations: Basic $ (0.01 ) Diluted $ (0.01 )

Restructuring and Other Simil35

Restructuring and Other Similar Charges (Tables)	12 Months Ended
	Mar. 31, 2018
Restructuring and Related Activities [Abstract]
Schedule of Restructuring and Related Costs	The following table summarizes the Company's restructuring and other similar costs incurred during the years ended March 31, 2018 , 2017 and 2016 by classification of operating segment (in millions): Year Ended March 31, 2018 Process & Motion Control Water Management Corporate Consolidated Employee termination benefits $ 4.6 $ 4.7 $ — $ 9.3 Asset impairment charges (1) 0.8 — — 0.8 Contract termination and other associated costs 7.9 0.8 — 8.7 Total restructuring and other similar costs $ 13.3 $ 5.5 $ — $ 18.8 Year Ended March 31, 2017 Process & Motion Control Water Management Corporate Consolidated Employee termination benefits $ 16.5 $ 6.2 $ — $ 22.7 Asset impairment charges (1) 1.5 — — 1.5 Contract termination and other associated costs (2) 5.4 2.0 — 7.4 Total restructuring and other similar costs $ 23.4 $ 8.2 $ — $ 31.6 Year Ended March 31, 2016 Process & Motion Control Water Management Corporate Consolidated Employee termination benefits $ 10.8 $ 4.2 $ 0.3 $ 15.3 Asset impairment charges (1) $ 1.0 $ 16.5 $ — 17.5 Contract termination and other associated costs 0.5 1.6 — 2.1 Total restructuring and other similar costs $ 12.3 $ 22.3 $ 0.3 $ 34.9 Restructuring Costs To-date (Period from April 1, 2011 to March 31, 2018) Process & Motion Control Water Management Corporate Consolidated Employee termination benefits $ 48.9 $ 24.5 $ 2.0 $ 75.4 Asset impairment charges 3.3 16.5 — 19.8 Contract termination and other associated costs 17.7 9.1 — 26.8 Total restructuring and other similar costs $ 69.9 $ 50.1 $ 2.0 $ 122.0 (1) In connection with the ongoing supply chain optimization and footprint repositioning initiatives, the Company has taken several actions to consolidate existing manufacturing facilities and rationalize its product offerings. These actions require the Company to assess whether the carrying amount of impacted long-lived assets will be recoverable as well as whether the remaining useful lives require adjustment. The impairment charges associated with these assets recognized during fiscal 2018, 2017 and 2016 were determined utilizing independent appraisals of the assets and were classified as Level 3 inputs within the Fair Value hierarchy. Refer to Note 13 Fair Value Measurements for additional information. (2) During fiscal 2017, the Company received a $1.0 million cash payment in connection with the sale of certain Rodney Hunt Fontaine ("RHF") related intellectual property, which was fully impaired during fiscal 2016 when the Company announced its decision to exit the RHF product line. A gain on the disposition of this intellectual property of $1.0 million was recognized during fiscal 2017 within the Water Management operating segment. Pre-tax loss from operations associated with this non-strategic exit of the RHF product-line were as follows in fiscal years 2017 and 2016: Years Ended March 31, Pre-tax Loss Description 2017 $ (16.3 ) Includes other restructuring charges (primarily severance costs) of $3.8 million 2016 $ (43.1 ) Includes asset impairments described above and other restructuring charges (primarily severance costs) of $16.5 million and $2.9 million, respectively
Summary of Activity in Restructuring Accrual	The following table summarizes the activity in the Company's accrual for restructuring costs for the fiscal years ended March 31, 2018 and 2017 (in millions): Employee termination benefits Asset impairment charges Contract termination and other associated costs Total Accrued Restructuring Costs, March 31, 2016 (1) $ 10.5 $ — $ 0.3 $ 10.8 Charges 22.7 1.5 7.4 31.6 Cash payments (2) (20.0 ) — (6.7 ) (26.7 ) Non-cash charges (3) (2.2 ) (1.5 ) — (3.7 ) Accrued Restructuring Costs, March 31, 2017 (1) 11.0 — 1.0 12.0 Charges 9.3 0.8 8.7 18.8 Cash payments (16.1 ) — (9.3 ) (25.4 ) Non-cash charges — (0.8 ) — (0.8 ) Accrued Restructuring Costs, March 31, 2018 (1) $ 4.2 $ — $ 0.4 $ 4.6 (1) The restructuring accrual is included in Other current liabilities on the consolidated balance sheets. (2) Includes the $1.0 million cash payment received in conjunction with the aforementioned disposition of RHF-related intellectual property. (3) Included in Employee termination benefits for the year ended March 31, 2017 is $2.2 million of contractual termination benefits recognized for enhanced benefits that will be provided to certain employees impacted by the ongoing supply chain optimization and footprint repositioning initiatives. Those amounts are recorded in the Pension and post-retirement benefit obligations within the consolidated balance sheets and are therefore excluded from the restructuring accrual. Refer to Note 16 Retirement Benefits for additional information.

Inventories (Tables)

Inventories (Tables)	12 Months Ended
	Mar. 31, 2018
Inventory Disclosure [Abstract]
Major Classes of Inventories	The major classes of inventories are summarized as follows (in millions): March 31, 2018 2017 Finished goods $ 146.0 $ 139.9 Work in progress 42.2 44.4 Purchased components 83.2 74.0 Raw materials 67.9 47.7 Inventories at First-in, First-Out ("FIFO") cost 339.3 306.0 Adjustment to state inventories at Last-in, First-Out ("LIFO") cost 5.5 8.9 $ 344.8 $ 314.9

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	12 Months Ended
	Mar. 31, 2018
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	Property, plant and equipment, net is summarized as follows (in millions): March 31, 2018 2017 Land $ 37.1 $ 32.2 Buildings and improvements 273.4 239.0 Machinery and equipment 420.1 391.0 Hardware and software 72.7 68.9 Construction in-progress 36.3 19.8 839.6 750.9 Less accumulated depreciation (383.2 ) (350.0 ) $ 456.4 $ 400.9

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	12 Months Ended
	Mar. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Intangible Assets and Goodwill	The changes in the net carrying value of goodwill for the years ended March 31, 2018 and 2017 by operating segment, consisted of the following (in millions): Goodwill Process & Motion Control Water Management Consolidated Net carrying amount as of March 31, 2016 $ 942.4 $ 251.4 $ 1,193.8 Acquisitions (1) 129.4 — 129.4 Currency translation adjustments (3.0 ) (2.0 ) (5.0 ) Net carrying amount as of March 31, 2017 $ 1,068.8 $ 249.4 $ 1,318.2 Acquisitions (1) 29.5 25.7 55.2 Impairment — (111.2 ) (111.2 ) Currency translation adjustments 4.2 9.7 13.9 Net carrying amount as of March 31, 2018 $ 1,102.5 $ 173.6 $ 1,276.1 ______________________ (1) Refer to Note 3 for additional information regarding acquisitions.
Schedule of Gross Carrying Amount and Accumulated Amortization for Finite-Lived Intangible Assets	The gross carrying amount and accumulated amortization for each major class of identifiable intangible assets as of March 31, 2018 and March 31, 2017 consisted of the following (in millions): March 31, 2018 Weighted Average Useful Life Gross Carrying Amount Accumulated Amortization Net Carrying Amount Intangible assets subject to amortization: Patents 10 years $ 53.1 $ (39.3 ) $ 13.8 Customer relationships (including distribution network) 13 years 719.6 (506.4 ) 213.2 Tradenames 13 years 40.1 (8.5 ) 31.6 Intangible assets not subject to amortization - trademarks and tradenames 318.9 — 318.9 Total intangible assets, net 13 years $ 1,131.7 $ (554.2 ) $ 577.5 March 31, 2017 Weighted Average Useful Life Gross Carrying Amount Accumulated Amortization Net Carrying Amount Intangible assets subject to amortization: Patents 10 years $ 47.0 $ (37.7 ) $ 9.3 Customer relationships (including distribution network) 13 years 685.8 (475.2 ) 210.6 Tradenames 12 years 29.5 (5.3 ) 24.2 Intangible assets not subject to amortization - trademarks and tradenames 314.5 — 314.5 Total intangible assets, net 13 years $ 1,076.8 $ (518.2 ) $ 558.6
Schedule of Gross Carrying Amount and Accumulated Amortization for Infinite-Lived Intangible Assets	The gross carrying amount and accumulated amortization for each major class of identifiable intangible assets as of March 31, 2018 and March 31, 2017 consisted of the following (in millions): March 31, 2018 Weighted Average Useful Life Gross Carrying Amount Accumulated Amortization Net Carrying Amount Intangible assets subject to amortization: Patents 10 years $ 53.1 $ (39.3 ) $ 13.8 Customer relationships (including distribution network) 13 years 719.6 (506.4 ) 213.2 Tradenames 13 years 40.1 (8.5 ) 31.6 Intangible assets not subject to amortization - trademarks and tradenames 318.9 — 318.9 Total intangible assets, net 13 years $ 1,131.7 $ (554.2 ) $ 577.5 March 31, 2017 Weighted Average Useful Life Gross Carrying Amount Accumulated Amortization Net Carrying Amount Intangible assets subject to amortization: Patents 10 years $ 47.0 $ (37.7 ) $ 9.3 Customer relationships (including distribution network) 13 years 685.8 (475.2 ) 210.6 Tradenames 12 years 29.5 (5.3 ) 24.2 Intangible assets not subject to amortization - trademarks and tradenames 314.5 — 314.5 Total intangible assets, net 13 years $ 1,076.8 $ (518.2 ) $ 558.6

Other Current Liabilities (Tabl

Other Current Liabilities (Tables)	12 Months Ended
	Mar. 31, 2018
Other Liabilities Disclosure [Abstract]
Schedule of Other Current Liabilities	Other current liabilities are summarized as follows (in millions): March 31, 2018 March 31, 2017 Customer advances $ 11.5 $ 10.9 Sales rebates 26.9 25.5 Commissions 7.0 6.3 Restructuring and other similar charges (1) 4.6 12.0 Product warranty (2) 8.9 7.5 Risk management (3) 10.1 8.9 Legal and environmental 3.7 4.4 Taxes, other than income taxes 8.7 10.5 Income taxes payable 25.1 17.8 Interest payable 8.7 5.7 Other 34.6 17.9 $ 149.8 $ 127.4 ___________________ (1) See more information related to the restructuring obligations balance within Note 5 . (2) See more information related to the product warranty obligations balance within Note 2 . (3) Includes projected liabilities related to losses arising from automobile, general and product liability claims.

Long-Term Debt (Tables)

Long-Term Debt (Tables)	12 Months Ended
	Mar. 31, 2018
Debt Disclosure [Abstract]
Summary of Long-Term Debt	Long-term debt is summarized as follows (in millions): March 31, 2018 March 31, 2017 Term loans (1) $ 791.5 $ 1,584.5 4.875% Senior Notes due 2025 (2) 494.2 — Securitization facility borrowings (3) 18.3 — Other subsidiary debt (4) 52.0 38.2 Total 1,356.0 1,622.7 Less current maturities 3.9 16.5 Long-term debt $ 1,352.1 $ 1,606.2 ____________________ (1) Includes unamortized debt issuance costs of $8.5 million and $17.9 million at March 31, 2018 and March 31, 2017 , respectively. (2) Includes unamortized debt issuance costs of $5.8 million at March 31, 2018. (3) Includes unamortized debt issuance costs of $0.5 million at March 31, 2018. (4) Includes unamortized debt issuance costs of $0.5 million at both March 31, 2018 and March 31, 2017 .
Schedule of Maturities of Long-Term Debt	Future maturities of debt as of March 31, 2018, excluding the unamortized debt issuance costs of $15.3 million , were as follows (in millions): Years ending March 31: 2019 $ 3.9 2020 18.8 2021 20.2 2022 1.1 2023 1.1 Thereafter 1,326.2 $ 1,371.3

Derivative Financial Instrume41

Derivative Financial Instruments (Tables)	12 Months Ended
	Mar. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivatives Designated as Hedging Instruments	The following tables indicate the location and the fair value of the Company's non-qualifying, non-designated derivative instruments within the consolidated balance sheets (in millions): March 31, 2018 March 31, 2017 Balance Sheet Classification Asset Derivatives Interest rate caps $ — $ — Other assets Foreign currency forward contracts $ 0.4 $ — Other current assets Liability Derivatives Interest rate swaps $ 0.8 $ — Other current liabilities Interest rate swaps $ — $ 10.3 Other liabilities Foreign currency forward contracts $ — $ 0.1 Other current liabilities
Schedules of Gains and Losses Associated with Derivative Instruments	The following table segregates the location and the amount of gains or losses associated with the changes in the fair value of the Company's derivative instruments, net of tax, within the consolidated balance sheets (for instruments no longer qualifying for hedge accounting under ASC 815) and recognized within the consolidated statements of operations (for non-qualifying, non-designated derivative instruments): Amount of loss recognized in accumulated other comprehensive loss Derivative instruments no longer qualifying for hedge accounting under ASC 815 (in millions) March 31, 2018 March 31, 2017 Interest rate swaps $ 2.3 $ 6.4 Interest rate caps $ 1.4 $ 3.1
Schedule of Other Derivatives Not Designated as Hedging Instruments	Amount recognized as (income) expense Non-qualifying, non-designated derivative instruments (in millions) Consolidated Statements of Operations Classification Year Ended March 31, 2018 March 31, 2017 March 31, 2016 Foreign currency forward contracts Other (income) expense , net $ 0.2 $ (0.3 ) $ — Interest rate swaps Interest expense, net $ (5.0 ) $ — $ —

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Mar. 31, 2018
Fair Value Disclosures [Abstract]
Assets Recognized at Fair Value on a Recurring Basis	The following table provides a summary of the Company's assets and liabilities that were recognized at fair value on a recurring basis as of March 31, 2018 and March 31, 2017 (in millions): Fair Value as of March 31, 2018 Level 1 Level 2 Level 3 Total Assets: Foreign currency forward contracts $ — $ 0.4 $ — $ 0.4 Total assets at fair value $ — $ 0.4 $ — $ 0.4 Liabilities: Interest rate swaps $ — $ 0.8 $ — $ 0.8 Total liabilities at fair value $ — $ 0.8 $ — $ 0.8 Fair Value as of March 31, 2017 Level 1 Level 2 Level 3 Total Liabilities: Interest rate swaps $ — $ 10.3 $ — $ 10.3 Foreign currency forward contracts — 0.1 — 0.1 Total liabilities at fair value $ — $ 10.4 $ — $ 10.4
Liabilities Recognized at Fair Value on a Recurring Basis	The following table provides a summary of the Company's assets and liabilities that were recognized at fair value on a recurring basis as of March 31, 2018 and March 31, 2017 (in millions): Fair Value as of March 31, 2018 Level 1 Level 2 Level 3 Total Assets: Foreign currency forward contracts $ — $ 0.4 $ — $ 0.4 Total assets at fair value $ — $ 0.4 $ — $ 0.4 Liabilities: Interest rate swaps $ — $ 0.8 $ — $ 0.8 Total liabilities at fair value $ — $ 0.8 $ — $ 0.8 Fair Value as of March 31, 2017 Level 1 Level 2 Level 3 Total Liabilities: Interest rate swaps $ — $ 10.3 $ — $ 10.3 Foreign currency forward contracts — 0.1 — 0.1 Total liabilities at fair value $ — $ 10.4 $ — $ 10.4

Leases (Tables)

Leases (Tables)	12 Months Ended
	Mar. 31, 2018
Leases [Abstract]
Future Minimum Rental Payments for Operating Leases	Future minimum rental payments for operating leases with initial terms in excess of one year as of March 31, 2018 are as follows (in millions): Years ending March 31: 2019 $ 19.1 2020 17.7 2021 11.9 2022 9.4 2023 8.4 Thereafter 40.7 $ 107.2

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	12 Months Ended
	Mar. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Fair Value of Options Granted	The fair value of each option granted under the Plan was estimated on the date of grant using the Black-Scholes valuation model that uses the following weighted-average assumptions: Years Ended March 31, 2018 March 31, 2017 March 31, 2016 Expected option term (in years) 6.5 6.5 6.5 Expected volatility factor 31 % 29 % 24 % Weighted-average risk free interest rate 1.99 % 1.58 % 1.82 % Expected dividend rate 0.0 % 0.0 % 0.0 %
Schedule of Stock Options Activity	A summary of stock option activity during fiscal 2018, 2017 and 2016 is as follows: Years Ended March 31, 2018 March 31, 2017 March 31, 2016 Shares Weighted Avg. Exercise Price Shares Weighted Avg. Exercise Price Shares Weighted Avg. Exercise Price Number of shares under options: Outstanding at beginning of period 7,770,670 $ 18.73 7,854,685 $ 15.10 8,588,518 $ 13.04 Granted 1,176,205 23.17 2,602,014 19.72 1,072,556 24.14 Exercised (1) (543,443 ) 14.89 (2,116,571 ) 5.18 (1,278,017 ) 5.55 Canceled/Forfeited (285,485 ) 22.55 (569,458 ) 23.34 (528,372 ) 23.53 Outstanding at end of period (2) 8,117,947 $ 19.50 7,770,670 $ 18.73 7,854,685 $ 15.10 Exercisable at end of period (3) 4,810,737 $ 17.93 3,221,622 $ 15.25 4,678,216 $ 9.52 ______________________ (1) The total intrinsic value of options exercised during fiscal 2018 , 2017 and 2016 was $6.4 million , $29.1 million and $16.3 million , respectively. (2) The weighted average remaining contractual life of options outstanding was 6.1 years at March 31, 2018 , 6.6 years at March 31, 2017 and 5.0 years at March 31, 2016 . The aggregate intrinsic value of options outstanding at March 31, 2018 was $82.7 million . (3) The weighted average remaining contractual life of options exercisable was 4.7 years at March 31, 2018 , 4.6 years at March 31, 2017 and 3.0 years at March 31, 2016 . The aggregate intrinsic value of options exercisable at March 31, 2018 was $56.5 million . Shares Weighted Avg. Exercise Price Nonvested options at beginning of period 4,549,048 $ 21.20 Granted 1,176,205 23.17 Vested (2,169,627 ) 21.31 Canceled/Forfeited (248,416 ) 21.96 Nonvested options at end of period 3,307,210 $ 21.77
Schedule of Restricted Stock Units Activity	A summary of RSU activity during fiscal 2018 , 2017 , and 2016 is as follows: Years Ended March 31, 2018 March 31, 2017 March 31, 2016 Units Weighted Avg. Grant Date Fair Value Units Weighted Avg. Grant Date Fair Value Units Weighted Avg. Grant Date Fair Value Nonvested RSUs at beginning of period 322,142 $ 20.59 125,307 $ 24.67 53,813 $ 29.06 Granted 250,013 23.19 279,445 19.53 96,952 23.20 Vested (150,784 ) 21.92 (48,207 ) 24.01 (12,866 ) 29.09 Canceled/Forfeited (53,189 ) 22.41 (34,403 ) 22.00 (12,592 ) 27.62 Nonvested RSUs at end of period 368,182 $ 21.55 322,142 $ 20.59 125,307 $ 24.67
Schedule of Nonvested Performance-based Units Activity	A summary of PSU activity during fiscal 2018 , 2017 and 2016 is as follows: Years Ended March 31, 2018 March 31, 2017 March 31, 2016 Units Weighted Avg. Grant Date Fair Value Units Weighted Avg. Grant Date Fair Value Units Weighted Avg. Grant Date Fair Value Nonvested PSUs at beginning of period 259,930 $ 24.74 49,136 $ 28.57 — $ — Granted 193,071 26.58 219,266 23.95 50,711 28.57 Vested — — — — — — Canceled/Forfeited — — (8,472 ) 25.90 (1,575 ) 28.57 Nonvested PSUs at end of period 453,001 $ 25.53 259,930 $ 24.74 49,136 $ 28.57
Schedule of Weighted-Average Assumptions Used, Performance Stock Units	The following weighted-average assumptions were used for the portion of PSUs granted during fiscal 2018, 2017 and 2016 using the Monte Carlo method: Years Ended March 31, 2018 March 31, 2017 March 31, 2016 Expected volatility factor 31 % 30 % 31 % Weighted-average risk-free interest rate 1.45 % 0.86 % 1.01 % Expected dividend rate 0.0 % 0.0 % 0.0 % PSU fair value per share $31.25 $27.67 $32.06 The following table presents significant assumptions used to determine benefit obligations and net periodic benefit cost (income) in weighted-average percentages: Pension Benefits Other Postretirement Benefits March 31, 2018 March 31, 2017 March 31, 2016 March 31, 2018 March 31, 2017 March 31, 2016 Benefit Obligations: Discount rate 3.7 % 3.9 % 3.8 % 4.0 % 4.0 % 3.9 % Rate of compensation increase 2.9 % 3.0 % 3.1 % n/a n/a n/a Net Periodic Benefit Cost: Discount rate 3.9 % 3.8 % 3.7 % 4.0 % 3.9 % 3.8 % Rate of compensation increase 3.0 % 3.0 % 3.4 % n/a n/a n/a Expected return on plan assets 5.3 % 5.3 % 5.3 % n/a n/a n/a

Retirement Benefits (Tables)

Retirement Benefits (Tables)	12 Months Ended
	Mar. 31, 2018
Retirement Benefits [Abstract]
Components of Net Benefit Costs	The components of net periodic benefit cost reported in the consolidated statements of operations are as follows (in millions): Year Ended March 31, 2018 March 31, 2017 March 31, 2016 Pension Benefits: Service cost $ 1.0 $ 1.8 $ 2.2 Interest cost 24.4 25.7 25.5 Expected return on plan assets (26.7 ) (27.1 ) (28.8 ) Amortization of: Prior service cost — 0.1 0.1 (Income) cost associated with special events: Curtailment (1) (0.3 ) (1.4 ) — Contractual termination benefits (2) — 2.2 — Recognition of actuarial (gains) losses (1.1 ) — 13.0 Net periodic benefit (income) cost $ (2.7 ) $ 1.3 $ 12.0 Other Postretirement Benefits: Service cost $ — $ 0.1 $ 0.1 Interest cost 1.0 1.1 1.2 Amortization: Prior service credit (1.9 ) (2.0 ) (2.0 ) Cost associated with special events: Curtailment (1) — 0.4 — Recognition of actuarial gains (1.9 ) (1.6 ) (0.1 ) Net periodic benefit income $ (2.8 ) $ (2.0 ) $ (0.8 ) (1) During fiscal 2018 and 2017, certain active participants of a foreign pension plan were transferred out of the pension plan and placed into a defined contribution plan, resulting in a curtailment gain of $0.3 million and $1.4 million , respectively. In addition, during fiscal 2017 the Company also recognized a curtailment loss of $0.4 million associated with a postretirement benefit plan resulting from the decision to close a U.S. manufacturing facility in connection with the Company’s ongoing supply chain optimization and footprint repositioning initiatives. See Note 5, Restructuring and Other Similar Charges for additional information. The recognition of the non-cash net curtailment gain of $0.3 million and $1.0 million is recorded within Actuarial (gain) loss on pension and postretirement benefit obligations in the consolidated statements of operations for the fiscal years ended March 31, 2018 and 2017, respectively. (2) During fiscal 2017, the Company recognized incremental expense of $2.2 million of termination benefits associated with incremental benefits participants of the Company’s domestic union defined benefit plans will receive following the Company’s decision to close one of its U.S. manufacturing facilities. The contractual termination benefit is recorded in Restructuring and other similar charges on the fiscal 2017 consolidated statements of operations.
Summary of the Plan's Status	The status of the plans are summarized as follows (in millions): Pension Benefits Other Postretirement Benefits Year Ended March 31, 2018 Year Ended March 31, 2017 Year Ended March 31, 2018 Year Ended March 31, 2017 Benefit obligation at beginning of period $ (665.4 ) $ (674.0 ) $ (25.7 ) $ (29.6 ) Service cost (1.0 ) (1.8 ) — (0.1 ) Interest cost (24.4 ) (25.7 ) (1.0 ) (1.1 ) Actuarial gains 7.3 11.8 2.8 3.7 Benefits paid 41.2 39.8 3.0 3.1 Plan participant contributions (0.1 ) (0.3 ) (0.6 ) (0.6 ) Acquisitions (1) (6.3 ) (18.3 ) — — Contractual termination benefits — (2.2 ) — — Curtailments 0.3 2.5 — (1.1 ) Translation adjustment (10.6 ) 2.8 — — Benefit obligation at end of period $ (659.0 ) $ (665.4 ) $ (21.5 ) $ (25.7 ) Plan assets at the beginning of the period $ 513.0 $ 503.6 $ — $ — Actual return on plan assets 23.6 26.6 — — Contributions 5.9 8.6 3.0 3.1 Benefits paid (41.2 ) (39.8 ) (3.0 ) (3.1 ) Acquisitions (1) 2.3 14.9 — Translation adjustment 3.8 (0.9 ) — Plan assets at end of period $ 507.4 $ 513.0 $ — $ — Funded status of plans $ (151.6 ) $ (152.4 ) $ (21.5 ) $ (25.7 ) Net amount on Consolidated Balance Sheets consists of: Non-current assets $ 0.6 $ 0.6 $ — $ — Current liabilities (2.4 ) (2.2 ) (2.1 ) (2.1 ) Long-term liabilities (149.8 ) (150.8 ) (19.4 ) (23.6 ) Total net funded status $ (151.6 ) $ (152.4 ) $ (21.5 ) $ (25.7 ) (1) Includes the acquisition of Centa and Cambridge during fiscal 2018 and 2017, respectively. See Note 3 Acquisitions for additional information.
Schedule of Amounts in Accumulated Other Comprehensive Income (Loss) to be Recognized	Amounts included in accumulated other comprehensive loss (income), net of tax, related to defined benefit plans at March 31, 2018 and 2017 consist of the following (in millions): As of March 31, 2018 Pension Benefits Postretirement Benefits Total Unrecognized prior service credit $ (0.2 ) $ (1.2 ) $ (1.4 ) Unrecognized actuarial loss (gain) 46.2 (1.7 ) 44.5 Accumulated other comprehensive loss (income), gross 46.0 (2.9 ) 43.1 Deferred income tax (benefit) provision (15.9 ) 1.0 (14.9 ) Accumulated other comprehensive loss (income), net $ 30.1 $ (1.9 ) $ 28.2 As of March 31, 2017 Pension Benefits Postretirement Benefits Total Unrecognized prior service credit $ (0.1 ) $ (3.1 ) $ (3.2 ) Unrecognized actuarial loss (gain) 49.4 (0.8 ) 48.6 Accumulated other comprehensive loss (income), gross 49.3 (3.9 ) 45.4 Deferred income tax (benefit) provision (18.7 ) 1.5 (17.2 ) Accumulated other comprehensive loss (income), net $ 30.6 $ (2.4 ) $ 28.2
Schedule of Assumptions Used	The following weighted-average assumptions were used for the portion of PSUs granted during fiscal 2018, 2017 and 2016 using the Monte Carlo method: Years Ended March 31, 2018 March 31, 2017 March 31, 2016 Expected volatility factor 31 % 30 % 31 % Weighted-average risk-free interest rate 1.45 % 0.86 % 1.01 % Expected dividend rate 0.0 % 0.0 % 0.0 % PSU fair value per share $31.25 $27.67 $32.06 The following table presents significant assumptions used to determine benefit obligations and net periodic benefit cost (income) in weighted-average percentages: Pension Benefits Other Postretirement Benefits March 31, 2018 March 31, 2017 March 31, 2016 March 31, 2018 March 31, 2017 March 31, 2016 Benefit Obligations: Discount rate 3.7 % 3.9 % 3.8 % 4.0 % 4.0 % 3.9 % Rate of compensation increase 2.9 % 3.0 % 3.1 % n/a n/a n/a Net Periodic Benefit Cost: Discount rate 3.9 % 3.8 % 3.7 % 4.0 % 3.9 % 3.8 % Rate of compensation increase 3.0 % 3.0 % 3.4 % n/a n/a n/a Expected return on plan assets 5.3 % 5.3 % 5.3 % n/a n/a n/a
Schedule of Allocation of Plan Assets	The following table presents the Company’s target investment allocations for the year ended March 31, 2018 and actual investment allocations at March 31, 2018 and 2017 . Plan Assets 2018 2017 Investment Policy (1) Target Allocation (2) Actual Allocation Actual Allocation Equity securities 20 - 30% 29% 28% 30% Debt securities (including cash and cash equivalents) 55 - 80% 65% 65% 64% Other 0 - 10% 6% 7% 6% (1) The investment policy allocation represents the guidelines of the Company's principal U.S. pension plans based on the changes in the plans funded status. (2) The target allocations represent the weighted average target allocations for the Company's principal U.S. pension plans.
Schedule of Fair Value of Pension Plan Assets	The fair values of the Company’s pension plan assets for both the U.S and non-U.S. plans at March 31, 2018 and 2017 , by asset category are included in the table below (in millions). For additional information on the fair value hierarchy and the inputs used to measure fair value, see Note 13 Fair Value Measurements. As of March 31, 2018 Quoted Prices in Active Market (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets measured at net asset value (1) Total Cash and cash equivalents $ 2.2 $ — $ — $ 3.7 $ 5.9 Investment funds Fixed income funds (2) 10.7 — — 317.3 328.0 U.S. equity funds (3) 2.3 — — 59.6 61.9 International equity funds (3) 0.3 — — 35.6 35.9 Balanced funds (3) — — — 9.5 9.5 Alternative investment funds (4) — — — 36.0 36.0 Insurance contracts — — 30.2 — 30.2 Total $ 15.5 $ — $ 30.2 $ 461.7 507.4 As of March 31, 2017 Quoted Prices in Active Market (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets measured at net asset value (1) Total Cash and cash equivalents $ 2.0 $ — $ — $ 4.5 $ 6.5 Investment funds Fixed income funds (2) 8.8 — — 317.5 326.3 U.S. equity funds (3) 3.7 — — 65.2 68.9 International equity funds (3) 2.0 — — 38.5 40.5 Balanced funds (3) — — — 9.3 9.3 Alternative investment funds (4) — — — 37.6 37.6 Insurance contracts — — 23.9 — 23.9 Total $ 16.5 $ — $ 23.9 $ 472.6 513.0 (1) In accordance with Subtopic 820-10, certain investments that are measured at fair value using the net asset value per share (or its equivalent) practical expedient have not been classified in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the amounts presented in the statement of financial position. (2) The Company's fixed income mutual and commingled funds primarily include investments in U.S. government securities and corporate bonds. The commingled funds also include an insignificant portion of investments in asset-backed securities or partnerships. The mutual and commingled funds are primarily valued using the net asset value, which reflects the plan's share of the fair value of the investments. (3) The Company's equity mutual and commingled funds primarily include investments in U.S. and international common stock. The balanced mutual and commingled funds invest in a combination of fixed income and equity securities. The mutual and commingled funds are primarily valued using the net asset value, which reflects the plan's share of the fair value of the investments. (4) The Company's alternative investments include venture capital and partnership investments. Alternative investments are valued using the net asset value, which reflects the plan's share of the fair value of the investments. The Company is generally able to redeem investments at periodic times during the year with notice provided to the general partner. The fair values of the Company’s deferred compensation plan assets and liability are included in the table below (in millions). For additional information on the fair value hierarchy and the inputs used to measure fair value, see Note 13 Fair Value Measurements. Fair Value as of March 31, 2018 Quoted Prices in Significant Other Significant Total Deferred compensation plan assets: Mutual funds (1) $ 1.6 $ — $ — $ 1.6 Corporate-owned life insurance policies (2) — 1.9 — 1.9 Total assets at fair value $ 1.6 $ 1.9 $ — $ 3.5 Deferred compensation liability at fair value (3): $ 3.5 $ — $ — $ — Fair Value as of March 31, 2017 Quoted Prices in Significant Other Significant Total Deferred compensation plan assets: Mutual funds (1) $ 1.4 $ — $ — $ 1.4 Total assets at fair value $ 1.4 $ — $ — $ 1.4 Deferred compensation liability at fair value (3): $ 1.4 $ — $ — $ 1.4 (1) The Company has elected to use the fair value option for the mutual funds to better align the measurement of the assets with the measurement of the liability, which are measured using quoted prices of identical instruments in active markets and are categorized as Level 1. (2) The corporate-owned life insurance contracts are recorded at cash surrender value, which is provided by a third party and reflects the net asset value of the underlying publicly traded mutual funds, and are categorized as Level 2. (3) The deferred compensation liability is measured at fair value based on the quoted prices of identical instruments to the investment vehicles selected by the participants.
Summary of Changes in Fair Value, Level 3	The table below sets forth a summary of changes in the fair value of the Level 3 investments for the years ended March 31, 2018 and 2017 (in millions): Insurance Contracts Ending balance, March 31, 2016 $ 22.6 Actual return on assets: Related to assets held at reporting date 1.3 Related to assets sold during the period — Purchases, sales, issuances and settlements — Ending balance, March 31, 2017 23.9 Actual return on assets: Related to assets held at reporting date 3.9 Related to assets acquired by acquisition (1) 2.4 Related to assets sold during the period — Purchases, sales, issuances and settlements — Ending balance, March 31, 2018 $ 30.2 (1) Relates to the assets acquired in connection with the Company's acquisition of Centa during fiscal 2018. See Note 3 Acquisitions for additional information.
Schedule of Expected Benefit Payments	Expected benefit payments to be paid in each of the next five fiscal years and in the aggregate for the five fiscal years thereafter are as follows (in millions): Year Ending March 31: Pension Benefits Other Postretirement Benefits 2019 $ 41.2 $ 2.1 2020 41.3 2.2 2021 41.1 2.1 2022 41.0 1.9 2023 40.8 1.7 2024-2028 200.0 7.1
Schedule of Effect of One-Percentage-Point Change in Assumed Health Care Cost Trend Rates	A one-percentage point change in assumed health care cost trend rates would have the following effect (in millions): One Percentage Point Increase One Percentage Point Decrease Year Ended March 31, Year Ended March 31, 2018 2017 2016 2018 2017 2016 Increase (decrease) in total of service and interest cost components $ 0.1 $ 0.1 $ 0.1 $ (0.1 ) $ (0.1 ) $ (0.1 ) Increase (decrease) in postretirement benefit obligation 1.5 2.1 2.6 (1.3 ) (1.8 ) (2.2 )

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Mar. 31, 2018
Income Tax Disclosure [Abstract]
Components of the Provision (Benefit) For Income Taxes	The components of the (benefit) provision for income taxes are as follows (in millions): Year ended March 31, 2018 2017 2016 Current: United States $ 26.7 $ 12.1 $ 24.0 Non-United States 25.5 20.3 15.3 State and local 3.9 2.2 3.9 Total current 56.1 34.6 43.2 Deferred: United States (70.4 ) (18.0 ) (10.2 ) Non-United States (3.0 ) (6.8 ) 1.1 State and local (2.2 ) (1.9 ) (17.0 ) Total deferred (75.6 ) (26.7 ) (26.1 ) (Benefit) Provision for income taxes $ (19.5 ) $ 7.9 $ 17.1
U.S. Statutory Income Tax Rate Reconciliation	The (benefit) provision for income taxes differs from the United States statutory income tax rate due to the following items (in millions): Year ended March 31, 2018 2017 2016 Provision for income taxes at U.S. federal statutory income tax rate $ 17.8 $ 28.7 $ 30.1 State and local income taxes, net of federal benefit 2.9 0.8 2.7 Net effects of foreign rate differential (2.5 ) (1.3 ) (3.0 ) Net effects of foreign operations (8.4 ) (4.4 ) (2.1 ) Net effect to deferred taxes for U.S. Tax Reform (66.5 ) — — Nondeductible goodwill impairment charges 35.1 — — Unrecognized tax benefits, net of federal benefit 1.1 0.5 (11.3 ) Domestic production activities deduction (3.2 ) (2.7 ) (1.3 ) Research and development credit (0.9 ) (7.6 ) — Excess tax benefits related to equity compensation (0.5 ) (7.0 ) — Changes in valuation allowance 4.8 0.5 2.3 Other 0.8 0.4 (0.3 ) (Benefit) provision for income taxes $ (19.5 ) $ 7.9 $ 17.1
Components of Income (Loss) Before Income Taxes	The (benefit) provision for income taxes was calculated based upon the following components of income from continuing operations before income taxes (in millions): Year ended March 31, 2018 2017 2016 United States $ 86.6 $ 50.4 $ 45.3 Non-United States (30.1 ) 31.6 40.7 Income before income taxes $ 56.5 $ 82.0 $ 86.0
Schedule of Deferred Income Taxes	Deferred income taxes consist of the tax effects of the following temporary differences (in millions): March 31, 2018 March 31, 2017 Deferred tax assets: Compensation and retirement benefits $ 47.9 $ 79.9 General accruals and reserves 9.2 18.1 State tax net operating loss carryforwards 23.1 19.2 Foreign net operating loss and interest carryforwards 33.3 22.5 Other 1.2 7.9 Total deferred tax assets before valuation allowance 114.7 147.6 Valuation allowance (40.4 ) (27.7 ) Total deferred tax assets 74.3 119.9 Deferred tax liabilities: Property, plant and equipment 37.0 39.9 Inventories 18.1 31.5 Intangible assets and goodwill 153.6 217.5 Cancellation of indebtedness 7.1 27.6 Total deferred tax liabilities 215.8 316.5 Net deferred tax liabilities $ 141.5 $ 196.6 Net amount on Consolidated Balance Sheet consists of: Other assets $ 15.1 $ 12.2 Deferred income taxes (156.6 ) (208.8 ) Net long-term deferred tax liabilities $ (141.5 ) $ (196.6 )
Reconciliation of Gross Unrecognized Tax Benefits	The following table represents a reconciliation of the beginning and ending amount of the gross unrecognized tax benefits, excluding interest and penalties, for the fiscal years ended March 31, 2018 and March 31, 2017 (in millions): Year Ended March 31, 2018 2017 Balance at beginning of period $ 15.0 $ 13.2 Additions based on tax positions related to the current year 0.8 0.8 Additions for tax positions of prior years — 2.8 Reductions for tax positions of prior years — — Settlements — — Reductions due to lapse of applicable statute of limitations (0.6 ) (1.7 ) Cumulative translation adjustment 0.4 (0.1 ) Balance at end of period $ 15.6 $ 15.0

Business Segment Information (T

Business Segment Information (Tables)	12 Months Ended
	Mar. 31, 2018
Segment Reporting [Abstract]
Schedule of Business Segment Information	Business Segment Information: (in Millions) Year Ended March 31, 2018 March 31, 2017 March 31, 2016 Net sales by product Process & Motion Control: Original equipment manufacturers/ end-users $ 690.5 $ 594.6 $ 572.3 Maintenance, repair, and operations 550.7 540.1 528.0 Total Process & Motion Control 1,241.2 1,134.7 1,100.3 Water Management: Water safety, quality, flow control and conservation 566.9 538.9 534.1 Water infrastructure 257.9 244.6 289.4 Total Water Management 824.8 783.5 823.5 Consolidated net sales 2,066.0 1,918.2 1,923.8 Income (loss) from operations Process & Motion Control 193.8 134.9 146.8 Water Management (3.0 ) 85.1 72.8 Corporate (43.7 ) (36.3 ) (45.3 ) Consolidated income from operations 147.1 183.7 174.3 Non-operating expense: Interest expense, net (75.6 ) (88.7 ) (91.4 ) Loss on the extinguishment of debt (11.9 ) (7.8 ) — Other (expense) income, net (3.1 ) (5.2 ) 3.1 Income from continuing operations before income taxes 56.5 82.0 86.0 (Benefit) provision for income taxes (19.5 ) 7.9 17.1 Net income from continuing operations 76.0 74.1 68.9 Loss from discontinued operations, net of tax — — (1.4 ) Net income 76.0 74.1 67.5 Non-controlling interest income (loss) 0.1 — (0.4 ) Net income attributable to Rexnord 75.9 74.1 67.9 Dividends on preferred stock (23.2 ) (7.3 ) — Net income attributable to Rexnord common stockholders $ 52.7 $ 66.8 $ 67.9 Depreciation and Amortization Process & Motion Control $ 56.0 $ 69.9 $ 77.3 Water Management 33.7 35.5 38.1 Consolidated $ 89.7 $ 105.4 $ 115.4 Capital Expenditures Process & Motion Control $ 34.2 $ 42.0 $ 43.6 Water Management 6.5 12.5 8.5 Consolidated $ 40.7 $ 54.5 $ 52.1 March 31, 2018 March 31, 2017 March 31, 2016 Total Assets Process & Motion Control $ 2,598.8 $ 2,671.4 $ 2,412.7 Water Management 820.9 862.3 933.2 Corporate 4.0 5.6 8.9 Consolidated $ 3,423.7 $ 3,539.3 $ 3,354.8
Summary of Net Sales and Long-Lived Assets	Net sales to third parties and long-lived assets by geographic region are as follows (in millions): Net Sales Long-lived Assets Year Ended March 31, 2018 Year Ended March 31, 2017 Year Ended March 31, 2016 March 31, 2018 March 31, 2017 March 31, 2016 United States $ 1,392.8 $ 1,320.3 $ 1,306.9 $ 264.7 $ 267.2 $ 276.0 Europe 381.6 332.6 370.8 127.9 72.2 80.5 Rest of World 291.6 265.3 246.1 63.8 61.5 40.7 $ 2,066.0 $ 1,918.2 $ 1,923.8 $ 456.4 $ 400.9 $ 397.2

Quarterly Results of Operatio48

Quarterly Results of Operations (unaudited) (Tables)	12 Months Ended
	Mar. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Schedule of Quarterly Financial Information	Quarterly Results of Operations (unaudited) (in millions, except per share amounts) Fiscal 2018 First Quarter Second Quarter Third Quarter Fourth Quarter Total Net sales $ 487.7 $ 510.8 $ 492.3 $ 575.2 $ 2,066.0 Gross profit 176.0 188.3 182.9 209.7 756.9 Net income (loss) attributable to Rexnord 26.5 29.8 81.6 (62.0 ) 75.9 Dividends on preferred stock (5.8 ) (5.8 ) (5.8 ) (5.8 ) (23.2 ) Net income (loss) attributable to Rexnord common stockholders $ 20.7 $ 24.0 $ 75.8 $ (67.8 ) $ 52.7 Net income (loss) per share attributable to Rexnord common stockholders Basic $ 0.20 $ 0.23 $ 0.73 $ (0.65 ) $ 0.51 Diluted $ 0.20 $ 0.23 $ 0.67 $ (0.65 ) $ 0.50 Fiscal 2017 First Quarter Second Quarter Third Quarter Fourth Quarter Total Net sales $ 471.8 $ 491.0 $ 451.8 $ 503.6 $ 1,918.2 Gross profit 165.4 174.0 153.0 175.6 668.0 Net income attributable to Rexnord 18.9 24.6 3.2 27.4 74.1 Dividends on preferred stock — — (1.5 ) (5.8 ) (7.3 ) Net income attributable to Rexnord common stockholders $ 18.9 $ 24.6 $ 1.7 $ 21.6 $ 66.8 Net income per share attributable to Rexnord common stockholders Basic $ 0.19 $ 0.24 $ 0.02 $ 0.21 $ 0.65 Diluted $ 0.18 $ 0.24 $ 0.02 $ 0.21 $ 0.64

Guarantor Subsidiaries (Tables)

Guarantor Subsidiaries (Tables)	12 Months Ended
	Mar. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Condensed Balance Sheet	Condensed Consolidating Balance Sheets March 31, 2018 (in millions) Parent Issuers Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Assets Current assets: Cash and cash equivalents $ — $ — $ 40.9 $ 176.7 $ — $ 217.6 Receivables, net — — 206.5 166.7 — 373.2 Inventories, net — 201.1 143.7 — 344.8 Income tax receivable 7.4 — 5.7 6.0 — 19.1 Other current assets — — 12.2 30.8 — 43.0 Total current assets 7.4 — 466.4 523.9 — 997.7 Property, plant and equipment, net — — 253.9 202.5 — 456.4 Intangible assets, net — — 443.1 134.4 — 577.5 Goodwill — — 1,010.6 265.5 — 1,276.1 Investment in: Issuer subsidiaries 1,177.5 — — — (1,177.5 ) — Guarantor subsidiaries — 3,053.3 — — (3,053.3 ) — Non-guarantor subsidiaries — — 602.3 — (602.3 ) — Other assets 40.6 1.3 34.1 40.0 — 116.0 Total assets $ 1,225.5 $ 3,054.6 $ 2,810.4 $ 1,166.3 $ (4,833.1 ) $ 3,423.7 Liabilities and stockholders' equity Current liabilities: Current portion of long-term debt $ — $ — $ 0.1 $ 3.8 $ — $ 3.9 Trade payables — — 130.4 95.6 — 226.0 Compensation and benefits — — 42.0 28.0 — 70.0 Current portion of pension and postretirement benefit obligations — — 2.4 2.1 — 4.5 Other current liabilities 3.0 9.4 77.9 59.5 — 149.8 Total current liabilities 3.0 9.4 252.8 189.0 — 454.2 Long-term debt — 1,285.8 55.8 10.5 — 1,352.1 Note (receivable from) payable to affiliates, net 9.4 581.2 (845.5 ) 254.9 — — Pension and postretirement benefit obligations — — 114.7 54.5 — 169.2 Deferred income taxes — 0.7 117.1 38.8 — 156.6 Other liabilities 0.3 — 62.2 16.3 — 78.8 Total liabilities 12.7 1,877.1 (242.9 ) 564.0 — 2,210.9 Total stockholders' equity 1,212.8 1,177.5 3,053.3 602.3 (4,833.1 ) 1,212.8 Total liabilities and stockholders' equity $ 1,225.5 $ 3,054.6 $ 2,810.4 $ 1,166.3 $ (4,833.1 ) $ 3,423.7 Condensed Consolidating Balance Sheets March 31, 2017 (in millions) Parent Issuers Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Assets Current assets: Cash and cash equivalents $ 4.9 $ 0.1 $ 253.3 $ 231.8 $ — $ 490.1 Receivables, net — — 191.3 131.6 — 322.9 Inventories, net — — 223.8 91.1 — 314.9 Income tax receivable 4.4 — 1.1 5.4 — 10.9 Other current assets — — 9.9 29.4 — 39.3 Total current assets 9.3 0.1 679.4 489.3 — 1,178.1 Property, plant and equipment, net — — 255.3 145.6 — 400.9 Intangible assets, net — — 441.9 116.7 — 558.6 Goodwill — — 996.8 321.4 — 1,318.2 Investment in: Issuer subsidiaries 1,020.1 — — — (1,020.1 ) — Guarantor subsidiaries — 2,835.2 — — (2,835.2 ) — Non-guarantor subsidiaries — — 602.2 — (602.2 ) — Other assets 22.6 1.8 46.8 12.3 — 83.5 Total assets $ 1,052.0 $ 2,837.1 $ 3,022.4 $ 1,085.3 $ (4,457.5 ) $ 3,539.3 Liabilities and stockholders' equity Current liabilities: Current portion of long-term debt $ — $ 16.1 $ 0.4 $ — $ — $ 16.5 Trade payables — — 120.3 77.5 — 197.8 Compensation and benefits — — 32.4 21.9 — 54.3 Current portion of pension and postretirement benefit obligations — — 2.4 1.9 — 4.3 Other current liabilities — 5.7 76.4 45.3 — 127.4 Total current liabilities — 21.8 231.9 146.6 — 400.3 Long-term debt — 1,568.4 37.7 0.1 — 1,606.2 Note (receivable from) payable to affiliates, net (18.7 ) 215.5 (442.2 ) 245.4 — — Pension and postretirement benefit obligations — — 124.6 49.8 — 174.4 Deferred income taxes — 1.0 175.7 32.1 — 208.8 Other liabilities 0.1 10.3 59.5 9.1 — 79.0 Total liabilities (18.6 ) 1,817.0 187.2 483.1 — 2,468.7 Total stockholders' equity 1,070.6 1,020.1 2,835.2 602.2 (4,457.5 ) 1,070.6 Total liabilities and stockholders' equity $ 1,052.0 $ 2,837.1 $ 3,022.4 $ 1,085.3 $ (4,457.5 ) $ 3,539.3
Condensed Income Statement	Condensed Consolidating Statements of Operations For the Year Ended March 31, 2018 (in millions) Parent Issuers Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Net sales $ — $ — $ 1,488.6 $ 750.1 $ (172.7 ) $ 2,066.0 Cost of sales — — 936.5 545.3 (172.7 ) 1,309.1 Gross profit — — 552.1 204.8 — 756.9 Selling, general and administrative expenses — — 314.8 134.7 449.5 Restructuring and other similar charges — — 13.5 5.3 18.8 Actuarial gain on pension and postretirement benefit obligations — — (1.8 ) (1.5 ) (3.3 ) Amortization of intangible assets — — 27.0 6.6 33.6 Goodwill impairment — — 24.0 87.2 — 111.2 Income (loss) from operations — — 174.6 (27.5 ) — 147.1 Non-operating (expense) income: Interest income (expense), net: To third parties — (75.3 ) (0.4 ) 0.1 — (75.6 ) To affiliates 3.1 27.4 (13.2 ) (17.3 ) — — Loss on extinguishment of debt — (11.9 ) — — — (11.9 ) Other (expense) income, net — (0.2 ) (9.1 ) 6.2 — (3.1 ) Income (loss) before income taxes from operations 3.1 (60.0 ) 151.9 (38.5 ) — 56.5 (Benefit) provision for income taxes — (4.3 ) (37.8 ) 22.6 — (19.5 ) Income (loss) before equity in income of subsidiaries 3.1 (55.7 ) 189.7 (61.1 ) — 76.0 Equity in earnings (loss) of subsidiaries 72.9 128.6 (61.1 ) — (140.4 ) — Net income (loss) 76.0 72.9 128.6 (61.1 ) (140.4 ) 76.0 Non-controlling interest income — — 0.1 — — 0.1 Net income (loss) attributable to Rexnord 76.0 72.9 128.5 (61.1 ) (140.4 ) 75.9 Dividends on preferred stock (23.2 ) — — — — (23.2 ) Net income (loss) attributable to Rexnord common stockholders 52.8 72.9 128.5 (61.1 ) (140.4 ) 52.7 Comprehensive income (loss) $ 76.0 $ 88.9 $ 131.4 $ (17.0 ) $ (140.4 ) $ 138.9 Condensed Consolidating Statements of Operations For the Year Ended March 31, 2017 (in millions) Parent Issuers Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Net sales $ — $ — $ 1,407.2 $ 626.0 $ (115.0 ) $ 1,918.2 Cost of sales — — 918.5 446.7 (115.0 ) 1,250.2 Gross profit — — 488.7 179.3 — 668.0 Selling, general and administrative expenses — — 294.5 118.7 — 413.2 Restructuring and other similar charges — 28.0 3.6 — 31.6 Actuarial gain on pension and postretirement benefit obligations — — (1.3 ) (1.3 ) — (2.6 ) Amortization of intangible assets — — 35.5 6.6 — 42.1 Income from operations — — 132.0 51.7 — 183.7 Non-operating (expense) income: Interest income (expense), net: To third parties — (88.1 ) (0.5 ) (0.1 ) — (88.7 ) To affiliates 1.1 74.3 (53.4 ) (22.0 ) — — Loss on extinguishment of debt — (7.8 ) — — — (7.8 ) Other expense, net — (0.3 ) (2.1 ) (2.8 ) — (5.2 ) Income (loss) before income taxes from operations 1.1 (21.9 ) 76.0 26.8 — 82.0 Provision (benefit) for income taxes — 0.1 (5.8 ) 13.6 — 7.9 Net income (loss) before equity in loss of subsidiaries 1.1 (22.0 ) 81.8 13.2 — 74.1 Equity in earnings of subsidiaries 73.0 95.0 13.2 — (181.2 ) — Net income from continuing operations 74.1 73.0 95.0 13.2 (181.2 ) 74.1 Loss from discontinued operations — — — — — — Net income 74.1 73.0 95.0 13.2 (181.2 ) 74.1 Non-controlling interest income (loss) — — — — — — Net income attributable to Rexnord 74.1 73.0 95.0 13.2 (181.2 ) 74.1 Dividends on preferred stock (7.3 ) — — — — (7.3 ) Net income attributable to Rexnord common stockholders 66.8 73.0 95.0 13.2 (181.2 ) 66.8 Comprehensive income $ 74.1 $ 77.5 $ 86.0 $ 19.7 $ (181.2 ) $ 76.1 Condensed Consolidating Statements of Operations For the Year Ended March 31, 2016 (in millions) Parent Issuers Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Net sales $ — $ — $ 1,398.3 $ 631.5 $ (106.0 ) $ 1,923.8 Cost of sales — — 927.1 437.5 (106.0 ) 1,258.6 Gross profit — — 471.2 194.0 — 665.2 Selling, general and administrative expenses — — 272.2 113.5 — 385.7 Restructuring and other similar charges — — 24.6 10.3 — 34.9 Actuarial loss (gain) on pension and postretirement benefit obligations — — 13.1 (0.2 ) — 12.9 Amortization of intangible assets — — 50.5 6.9 — 57.4 Income from operations — — 110.8 63.5 — 174.3 Non-operating (expense) income: Interest (expense) income, net: To third parties — (90.4 ) (0.5 ) (0.5 ) — (91.4 ) To affiliates — 66.1 (49.5 ) (16.6 ) — — Loss on extinguishment of debt — — — — — — Other income (expense), net — — 3.7 (0.6 ) — 3.1 (Loss) income before income taxes from operations — (24.3 ) 64.5 45.8 — 86.0 Provision for income taxes — — 0.7 16.4 — 17.1 Net (loss) income before equity in loss of subsidiaries — (24.3 ) 63.8 29.4 — 68.9 Equity in earnings of subsidiaries 67.5 91.8 29.2 — (188.5 ) — Net income from continuing operations 67.5 67.5 93.0 29.4 (188.5 ) 68.9 Loss from discontinued operations — — (1.2 ) (0.2 ) — (1.4 ) Net income 67.5 67.5 91.8 29.2 (188.5 ) 67.5 Non-controlling interest loss — — — (0.4 ) — (0.4 ) Net Income attributable to Rexnord 67.5 67.5 91.8 29.6 (188.5 ) 67.9 Dividends on preferred stock — — — — — — Net income attributable to Rexnord common stockholders 67.5 67.5 91.8 29.6 (188.5 ) 67.9 Comprehensive income $ 67.5 $ 66.6 $ 89.9 $ 23.6 $ (188.5 ) $ 58.7
Condensed Cash Flow Statement	Condensed Consolidating Statements of Cash Flows For the Year Ended March 31, 2018 (in millions) Parent Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Operating activities Cash provided by (used for) operating activities $ 12.3 $ 313.4 $ (161.2 ) $ 64.0 $ — $ 228.5 Investing activities Expenditures for property, plant and equipment — — (28.4 ) (12.3 ) — (40.7 ) Acquisitions, net of cash — — (50.0 ) (123.6 ) — (173.6 ) Proceeds from dispositions of property, plant and equipment — — 5.3 0.2 — 5.5 Cash used for investing activities — — (73.1 ) (135.7 ) — (208.8 ) Financing activities Proceeds from borrowings of long-term debt — 1,324.0 205.8 — — 1,529.8 Repayments of long-term debt — (1,602.2 ) (189.7 ) — — (1,791.9 ) Repayments of short-term debt — (24.3 ) — — — (24.3 ) Payment of debt issuance costs — (11.0 ) — — — (11.0 ) Proceeds from exercise of stock options 6.0 — — — — 6.0 Proceeds from financing lease obligation — — 5.8 — — 5.8 Payments of dividend on preferred stock (23.2 ) — — — — (23.2 ) Cash (used for) provided by financing activities (17.2 ) (313.5 ) 21.9 — — (308.8 ) Effect of exchange rate changes on cash, cash equivalents and restricted cash — — — 16.6 — 16.6 (Decrease) increase in cash, cash equivalents and restricted cash (4.9 ) (0.1 ) (212.4 ) (55.1 ) — (272.5 ) Cash, cash equivalents and restricted cash at beginning of period 4.9 0.1 253.3 231.8 — 490.1 Cash, cash equivalents and restricted cash at end of period $ — $ — $ 40.9 $ 176.7 $ — $ 217.6 Condensed Consolidating Statements of Cash Flows For the Year Ended March 31, 2017 (in millions) Parent Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Operating activities Net cash (used for) provided by operating activities $ (397.5 ) $ 308.8 $ 215.7 $ 68.1 $ — $ 195.1 Investing activities Expenditures for property, plant and equipment — — (43.3 ) (11.2 ) — (54.5 ) Acquisitions, net of cash — — (213.4 ) (0.3 ) — (213.7 ) Proceeds from dispositions of property, plant and equipment — — 4.2 — — 4.2 Cash used for investing activities — — (252.5 ) (11.5 ) — (264.0 ) Financing activities Proceeds from borrowings of long-term debt — 1,590.3 — — — 1,590.3 Repayments of long-term debt — (1,885.8 ) — — — (1,885.8 ) Proceeds from borrowings of short-term debt — 16.1 — — — 16.1 Repayments of short-term debt — (19.5 ) — — — (19.5 ) Payment of debt issuance costs — (11.8 ) — — — (11.8 ) Deferred acquisition payment — — — (5.7 ) — (5.7 ) Proceeds from issuance of preferred stock, net of direct offering costs 389.7 — — — — 389.7 Payments of dividends on preferred stock (4.4 ) — — — — (4.4 ) Proceeds from exercise of stock options 11.0 — — — — 11.0 Cash provided by (used for) financing activities 396.3 (310.7 ) — (5.7 ) — 79.9 Effect of exchange rate changes on cash, cash equivalents and restricted cash — — — (5.5 ) — (5.5 ) (Decrease) increase in cash, cash equivalents and restricted cash (1.2 ) (1.9 ) (36.8 ) 45.4 — 5.5 Cash, cash equivalents and restricted cash at beginning of period 6.1 2.0 290.1 186.4 — 484.6 Cash, cash equivalents and restricted cash at end of period $ 4.9 $ 0.1 $ 253.3 $ 231.8 $ — $ 490.1 Condensed Consolidating Statements of Cash Flows For the Year Ended March 31, 2016 (in millions) Parent Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Operating activities Net cash provided (used for) by operating activities $ 32.7 $ 26.9 $ 101.9 $ 57.5 $ — $ 219.0 Investing activities Expenditures for property, plant and equipment — — (39.4 ) (12.7 ) — (52.1 ) Acquisitions, net of cash — — — 1.1 — 1.1 Proceeds from dispositions of property, plant and equipment — — 5.8 — — 5.8 Cash used for investing activities — — (33.6 ) (11.6 ) — (45.2 ) Financing activities Proceeds from borrowings of long-term debt — 0.9 — — — 0.9 Repayments of long-term debt — (19.5 ) — — — (19.5 ) Repayments of short-term debt — (5.9 ) — — — (5.9 ) Payment of debt issuance costs — (0.9 ) — — — (0.9 ) Proceeds from exercise of stock options 5.1 — — — — 5.1 Repurchase of Company common stock (40.0 ) — — — — (40.0 ) Excess tax benefit on exercise of stock options — — 4.0 — — 4.0 Cash (used for) provided by financing activities (34.9 ) (25.4 ) 4.0 — — (56.3 ) Effect of exchange rate changes on cash, cash equivalents and restricted cash — — — (3.2 ) — (3.2 ) (Decrease) increase in cash, cash equivalents and restricted cash (2.2 ) 1.5 72.3 42.7 — 114.3 Cash, cash equivalents and restricted cash at beginning of period 8.3 0.5 217.8 143.7 — 370.3 Cash, cash equivalents and restricted cash at end of period $ 6.1 $ 2.0 $ 290.1 $ 186.4 $ — $ 484.6

Basis of Presentation and Des50

Basis of Presentation and Description of Business - Narrative (Details)	12 Months Ended
	Mar. 31, 2018segment
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of operating platforms	2

Significant Accounting Polici51

Significant Accounting Policies - Narrative (Details) - USD ($) shares in Millions	Dec. 07, 2016	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2018
Property, Plant and Equipment [Line Items]
Post-shipment obligations		$ 0			$ 0
Allowance for doubtful accounts		$ 12,700,000	$ 10,600,000		12,700,000
Largest customer percentage of consolidated net sales		8.20%	8.40%	8.40%
Largest customer accounts receivable balance		$ 8,500,000	$ 12,300,000		$ 8,500,000
Percentage of inventory valued using LIFO		51.00%	60.00%		51.00%
Write-down of inventories		$ 7,400,000	$ 7,600,000	$ 9,500,000
Accelerated depreciation		$ 2,300,000	$ 9,600,000	2,500,000
Goodwill and intangible assets useful life		13 years	13 years
Impairment		$ (111,200,000)	$ 0	0
Impairment charges, long-lived assets		$ 18,800,000	$ 31,600,000	$ 34,900,000	$ 122,000,000
Antidilutive shares excluded from computation for diluted net income per share (in shares)		2.6	4.6	2.9
Currency translation gains (losses)		$ 3,400,000	$ 3,700,000	$ 3,000,000
Advertising costs		$ 11,500,000	$ 10,600,000	9,200,000
Redeemable Convertible Preferred Stock
Property, Plant and Equipment [Line Items]
Antidilutive shares excluded from computation for diluted net income per share (in shares)		16	5.8
Redeemable Convertible Preferred Stock
Property, Plant and Equipment [Line Items]
Dividend rate, percentage	5.75%	5.75%
Facility Closing
Property, Plant and Equipment [Line Items]
Impairment charges, long-lived assets		$ 800,000	$ 1,500,000	$ 17,500,000	$ 19,800,000
Customer relationships (including distribution network)
Property, Plant and Equipment [Line Items]
Goodwill and intangible assets useful life		13 years	13 years
Patents
Property, Plant and Equipment [Line Items]
Goodwill and intangible assets useful life		10 years	10 years
Tradenames
Property, Plant and Equipment [Line Items]
Goodwill and intangible assets useful life		13 years	12 years
Impairment charges, long-lived assets			$ 1,000,000
Minimum | Customer relationships (including distribution network)
Property, Plant and Equipment [Line Items]
Goodwill and intangible assets useful life		7 years
Minimum | Patents
Property, Plant and Equipment [Line Items]
Goodwill and intangible assets useful life		3 years
Minimum | Tradenames
Property, Plant and Equipment [Line Items]
Goodwill and intangible assets useful life		3 years
Maximum | Customer relationships (including distribution network)
Property, Plant and Equipment [Line Items]
Goodwill and intangible assets useful life		20 years
Maximum | Patents
Property, Plant and Equipment [Line Items]
Goodwill and intangible assets useful life		15 years
Maximum | Tradenames
Property, Plant and Equipment [Line Items]
Goodwill and intangible assets useful life		15 years
Buildings and improvements | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment useful life		10 years
Buildings and improvements | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment useful life		30 years
Machinery and equipment | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment useful life		5 years
Machinery and equipment | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment useful life		10 years
Hardware and software | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment useful life		3 years
Hardware and software | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment useful life		5 years

Significant Accounting Polici52

Significant Accounting Policies - Product Warranty (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Movement in Standard Product Warranty Accrual [Roll Forward]
Balance at beginning of period	$ 7.5	$ 6.8	$ 6.8
Acquired obligations	1.4	0.4	0
Charged to operations	4.6	3.9	2.8
Claims settled	(4.6)	(3.6)	(2.8)
Balance at end of period	$ 8.9	$ 7.5	$ 6.8

Significant Accounting Polici53

Significant Accounting Policies - Schedule of Per Share Data (Details) - USD ($) shares in Thousands, $ in Millions	3 Months Ended								12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Numerator:
Net income from continuing operations									$ 76	$ 74.1	$ 68.9
Less: Non-controlling interest income (loss)									0.1	0	(0.4)
Less: Dividends on preferred stock	$ (5.8)	$ (5.8)	$ (5.8)	$ (5.8)	$ (5.8)	$ (1.5)	$ 0	$ 0	(23.2)	(7.3)	0
Income from continuing operations attributable to Rexnord common stockholders									52.7	66.8	69.3
Loss from discontinued operations									0	0	(1.4)
Net income (loss) attributable to Rexnord common stockholders	$ (67.8)	$ 75.8	$ 24	$ 20.7	$ 21.6	$ 1.7	$ 24.6	$ 18.9	$ 52.7	$ 66.8	$ 67.9
Denominator:
Weighted average common shares outstanding, basic (in shares)									103,889	102,753	100,841
Effect of dilutive common shares equivalents (in shares)									2,110	2,031	2,469
Diluted (in shares)									105,999	104,784	103,310

Significant Accounting Polici54

Significant Accounting Policies - Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	$ 1,070.6	$ 588	$ 552.7
Other comprehensive income (loss), net of tax	62.9	2	(8.8)
Ending balance	1,212.8	1,070.6	588
Interest Rate Derivatives
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(9.5)	(16.9)	(12.6)
Other comprehensive (loss) income before reclassifications	0	1.1	(4.3)
Amounts reclassified from accumulated other comprehensive income (loss)	5.8	6.3	0
Other comprehensive income (loss), net of tax	5.8	7.4	(4.3)
Ending balance	(3.7)	(9.5)	(16.9)
Foreign Currency Translation
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(99.3)	(86.5)	(76.5)
Other comprehensive (loss) income before reclassifications	57.1	(12.8)	(10)
Amounts reclassified from accumulated other comprehensive income (loss)	0	0	0
Other comprehensive income (loss), net of tax	57.1	(12.8)	(10)
Ending balance	(42.2)	(99.3)	(86.5)
Pension and Postretirement Plans
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(28.2)	(35.6)	(41.1)
Other comprehensive (loss) income before reclassifications	1.4	9.2	6.7
Amounts reclassified from accumulated other comprehensive income (loss)	(1.4)	(1.8)	(1.2)
Other comprehensive income (loss), net of tax	0	7.4	5.5
Ending balance	(28.2)	(28.2)	(35.6)
Total
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(137)	(139)	(130.2)
Other comprehensive (loss) income before reclassifications	58.5	(2.5)	(7.6)
Amounts reclassified from accumulated other comprehensive income (loss)	4.4	4.5	(1.2)
Other comprehensive income (loss), net of tax	62.9	2	(8.8)
Ending balance	$ (74.1)	$ (137)	$ (139)

Significant Accounting Polici55

Significant Accounting Policies - Accumulated Other Comprehensive Loss Reclassification (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Pension and postretirement plans
Amortization of prior service credit	$ 449.5	$ 413.2	$ 385.7
Actuarial (gain) loss on pension and postretirement benefit obligations	(3.3)	(2.6)	12.9
Provision for income taxes	(19.5)	7.9	17.1
Net income (loss)	76	74.1	67.5
Interest rate derivatives
Benefit for income taxes	(19.5)	7.9	17.1
Net income (loss)	76	74.1	67.5
Accumulated Defined Benefit Plans Adjustment, Net Prior Service | Reclassification out of Accumulated Other Comprehensive Income
Pension and postretirement plans
Amortization of prior service credit	(1.9)	(1.9)	(1.9)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent, Curtailment | Reclassification out of Accumulated Other Comprehensive Income
Pension and postretirement plans
Actuarial (gain) loss on pension and postretirement benefit obligations	(0.3)	(1)	0
Accumulated Defined Benefit Plans Adjustment | Reclassification out of Accumulated Other Comprehensive Income
Pension and postretirement plans
Provision for income taxes	0.8	1.1	0.7
Net income (loss)	(1.4)	(1.8)	(1.2)
Interest rate derivatives
Benefit for income taxes	0.8	1.1	0.7
Net income (loss)	(1.4)	(1.8)	(1.2)
Accumulated Net Gain (Loss) from Cash Flow Hedges Including Portion Attributable to Noncontrolling Interest | Reclassification out of Accumulated Other Comprehensive Income
Pension and postretirement plans
Net income (loss)	5.8	6.3	0
Interest rate derivatives
Net income (loss)	5.8	6.3	0
Accumulated Net Gain (Loss) from Cash Flow Hedges Including Portion Attributable to Noncontrolling Interest | Reclassification out of Accumulated Other Comprehensive Income | Interest Rate Contract
Pension and postretirement plans
Provision for income taxes	(3.9)	(3.9)	0
Interest rate derivatives
Net realized losses on interest rate derivatives	9.7	10.2	0
Benefit for income taxes	$ (3.9)	$ (3.9)	$ 0

Significant Accounting Polici56

Significant Accounting Policies - Research and Development (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Accounting Policies [Abstract]
Research and development costs	$ 14	$ 11.1	$ 12.4
Engineering costs	25.4	27.2	24.8
Total	$ 39.4	$ 38.3	$ 37.2

Acquisitions - Narrative (Deta

Acquisitions - Narrative (Details) - USD ($) $ in Millions	Feb. 09, 2018	Oct. 04, 2017	Jun. 01, 2016	Jun. 30, 2016	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Business Acquisition [Line Items]
Purchase price, net of cash acquired					$ 173.6	$ 213.7
Goodwill					1,276.1	$ 1,318.2	$ 1,193.8
Centa
Business Acquisition [Line Items]
Maximum purchase price, net of cash acquired	$ 129.7
Purchase price, net of cash acquired	123.6
Payments to acquire business, two future, equal annual installments	$ 6.1
World Dryer
Business Acquisition [Line Items]
Purchase price, net of cash acquired		$ 50
Centa And World Dryer
Business Acquisition [Line Items]
Goodwill					55.2
Other intangible assets					44.9
Trade working capital					44
Fixed assets					55.9
Long-term debt					16.6
Other net liabilities					3.7
Centa And World Dryer | Tradenames
Business Acquisition [Line Items]
Other intangible assets					9.9
Centa And World Dryer | Customer Relationships
Business Acquisition [Line Items]
Other intangible assets					29.4
Centa And World Dryer | Patents
Business Acquisition [Line Items]
Other intangible assets					5.6
Cambridge
Business Acquisition [Line Items]
Goodwill					129.4
Other intangible assets					80.6
Total cash purchase price			$ 213.4
Other net assets					3.4
Cambridge | Tradenames
Business Acquisition [Line Items]
Other intangible assets					16.8
Cambridge | Customer Relationships
Business Acquisition [Line Items]
Other intangible assets					58.3
Cambridge | Patents
Business Acquisition [Line Items]
Other intangible assets					5.5
Water Management
Business Acquisition [Line Items]
Purchase price, net of cash acquired				$ 0.3	$ 0.3

Discontinued Operations - Resul

Discontinued Operations - Results of Discontinued Operations (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Net loss per share from discontinued operations:
Basic (in dollars per share)	$ 0	$ 0	$ (0.01)
Diluted (in dollars per share)	$ 0	$ 0	$ (0.01)
Mill Products business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales			$ 0
Loss from operations before income taxes			(2.2)
Benefit for income taxes			(0.8)
Net (loss) income			$ (1.4)
Net loss per share from discontinued operations:
Basic (in dollars per share)			$ (0.01)
Diluted (in dollars per share)			$ (0.01)

Restructuring and Other Simil59

Restructuring and Other Similar Charges - By Operating Segment (Details) - USD ($) $ in Millions	12 Months Ended			84 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2018
Restructuring Cost and Reserve [Line Items]
Charges	$ 18.8	$ 31.6	$ 34.9	$ 122
Employee termination benefits
Restructuring Cost and Reserve [Line Items]
Charges	9.3	22.7	15.3	75.4
Asset impairment charges
Restructuring Cost and Reserve [Line Items]
Charges	0.8	1.5	17.5	19.8
Contract termination and other associated costs
Restructuring Cost and Reserve [Line Items]
Charges	8.7	7.4	2.1	26.8
Tradenames
Restructuring Cost and Reserve [Line Items]
Charges		1
Proceeds from sale of RHF tradename		1
Operating Segments | Process & Motion Control
Restructuring Cost and Reserve [Line Items]
Charges	13.3	23.4	12.3	69.9
Operating Segments | Process & Motion Control | Employee termination benefits
Restructuring Cost and Reserve [Line Items]
Charges	4.6	16.5	10.8	48.9
Operating Segments | Process & Motion Control | Asset impairment charges
Restructuring Cost and Reserve [Line Items]
Charges	0.8	1.5	1	3.3
Operating Segments | Process & Motion Control | Contract termination and other associated costs
Restructuring Cost and Reserve [Line Items]
Charges	7.9	5.4	0.5	17.7
Operating Segments | Water Management
Restructuring Cost and Reserve [Line Items]
Charges	5.5	8.2	22.3	50.1
Operating Segments | Water Management | Employee termination benefits
Restructuring Cost and Reserve [Line Items]
Charges	4.7	6.2	4.2	24.5
Operating Segments | Water Management | Asset impairment charges
Restructuring Cost and Reserve [Line Items]
Charges	0	0	16.5	16.5
Operating Segments | Water Management | Contract termination and other associated costs
Restructuring Cost and Reserve [Line Items]
Charges	0.8	2	1.6	9.1
Corporate
Restructuring Cost and Reserve [Line Items]
Charges	0	0	0.3	2
Corporate | Employee termination benefits
Restructuring Cost and Reserve [Line Items]
Charges	0	0	0.3	2
Corporate | Asset impairment charges
Restructuring Cost and Reserve [Line Items]
Charges	0	0	0	0
Corporate | Contract termination and other associated costs
Restructuring Cost and Reserve [Line Items]
Charges	$ 0	$ 0	$ 0	$ 0

Restructuring and Other Simil60

Restructuring and Other Similar Charges - Pre-tax Loss From Operations Associated with the Non-strategic Exit of the RHF Product-line (Details) - USD ($) $ in Millions	12 Months Ended			84 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2018
Restructuring Cost and Reserve [Line Items]
Pre-tax Loss	$ 56.5	$ 82	$ 86
Charges	18.8	31.6	34.9	$ 122
Employee Severance
Restructuring Cost and Reserve [Line Items]
Charges	9.3	22.7	15.3	$ 75.4
Facility Closing and Intangible Assets
Restructuring Cost and Reserve [Line Items]
Charges	$ 0.8	1.5
RHF Product Line
Restructuring Cost and Reserve [Line Items]
Pre-tax Loss		(16.3)	(43.1)
RHF Product Line | Employee Severance
Restructuring Cost and Reserve [Line Items]
Other Restructuring Costs		$ 3.8	2.9
RHF Product Line | Facility Closing and Intangible Assets
Restructuring Cost and Reserve [Line Items]
Charges			$ 16.5

Restructuring and Other Simil61

Restructuring and Other Similar Charges - Restructuring Reserve Rollforward (Details) - USD ($) $ in Millions	12 Months Ended			84 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2018
Restructuring Reserve [Roll Forward]
Accrued Restructuring Costs, Beginning of Period	$ 12	$ 10.8
Charges	18.8	31.6	$ 34.9	$ 122
Cash payments	(25.4)	(26.7)
Non-cash charges	(0.8)	(3.7)
Accrued Restructuring Costs, End of Period	4.6	12	10.8	4.6
Contractual termination benefits	0.8	3.7
Tradenames
Restructuring Reserve [Roll Forward]
Charges		1
Proceeds from sale of RHF tradename		1
Employee termination benefits
Restructuring Reserve [Roll Forward]
Accrued Restructuring Costs, Beginning of Period	11	10.5
Charges	9.3	22.7	15.3	75.4
Cash payments	(16.1)	(20)
Non-cash charges	0	(2.2)
Accrued Restructuring Costs, End of Period	4.2	11	10.5	4.2
Contractual termination benefits	0	2.2
Asset impairment charges
Restructuring Reserve [Roll Forward]
Accrued Restructuring Costs, Beginning of Period	0	0
Charges	0.8	1.5
Cash payments	0	0
Non-cash charges	(0.8)	(1.5)
Accrued Restructuring Costs, End of Period	0	0	0	0
Contractual termination benefits	0.8	1.5
Contract termination and other associated costs
Restructuring Reserve [Roll Forward]
Accrued Restructuring Costs, Beginning of Period	1	0.3
Charges	8.7	7.4	2.1	26.8
Cash payments	(9.3)	(6.7)
Non-cash charges	0	0
Accrued Restructuring Costs, End of Period	0.4	1	$ 0.3	$ 0.4
Contractual termination benefits	$ 0	$ 0

Recovery Under Continued Dump62

Recovery Under Continued Dumping and Subsidy Offset Act ("CDSOA") - Narrative (Details) - USD ($)	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Component of Other Income, Nonoperating [Line Items]
Income distributed from CBP	$ (3,100,000)	$ (5,200,000)	$ 3,100,000
Recovery under CDSOA
Component of Other Income, Nonoperating [Line Items]
Income distributed from CBP	$ 0	$ 0	$ 8,400,000

Inventories - By Category (Deta

Inventories - By Category (Details) - USD ($) $ in Millions	Mar. 31, 2018	Mar. 31, 2017
Inventory Disclosure [Abstract]
Finished goods	$ 146	$ 139.9
Work in progress	42.2	44.4
Purchased components	83.2	74
Raw materials	67.9	47.7
Inventories at First-in, First-Out (FIFO) cost	339.3	306
Adjustment to state inventories at Last-in, First-Out (LIFO) cost	5.5	8.9
Inventories, net	$ 344.8	$ 314.9

Property, Plant and Equipment -

Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Details) - USD ($) $ in Millions	Mar. 31, 2018	Mar. 31, 2017
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 839.6	$ 750.9
Less accumulated depreciation	(383.2)	(350)
Property, plant and equipment, net	456.4	400.9
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	37.1	32.2
Buildings and improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	273.4	239
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	420.1	391
Hardware and software
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	72.7	68.9
Construction in-progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 36.3	$ 19.8

Goodwill and Intangible Asset65

Goodwill and Intangible Assets - Schedule of Changes (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Goodwill [Roll Forward]
Net carrying amount, beginning of period	$ 1,318.2	$ 1,193.8
Acquisitions	55.2	129.4
Impairment	(111.2)	0	$ 0
Currency translation adjustment and other	13.9	(5)
Net carrying amount, end of period	1,276.1	1,318.2	1,193.8
Operating Segments | Process & Motion Control
Goodwill [Roll Forward]
Net carrying amount, beginning of period	1,068.8	942.4
Acquisitions	29.5	129.4
Impairment	0
Currency translation adjustment and other	4.2	(3)
Net carrying amount, end of period	1,102.5	1,068.8	942.4
Operating Segments | Water Management
Goodwill [Roll Forward]
Net carrying amount, beginning of period	249.4	251.4
Acquisitions	25.7	0
Impairment	(111.2)
Currency translation adjustment and other	9.7	(2)
Net carrying amount, end of period	$ 173.6	$ 249.4	$ 251.4

Goodwill and Intangible Asset66

Goodwill and Intangible Assets - Narrative (Details) - USD ($)	3 Months Ended	12 Months Ended
	Dec. 31, 2017	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Cumulative goodwill impairment charges		$ 434,600,000	$ 323,400,000
Amortization of intangible assets		33,600,000	42,100,000	$ 57,400,000
Future amortization expense
Expected amortization expense, 2019		35,400,000
Expected amortization expense, 2020		35,200,000
Expected amortization expense, 2021		33,700,000
Expected amortization expense, 2022		29,400,000
Expected amortization expense, 2023		15,100,000
Goodwill and intangible asset impairment	$ 0
Goodwill impairment		$ 111,200,000	$ 0	0
Tradenames
Future amortization expense
Impairment of intangible assets (excluding goodwill)				10,400,000
Patents
Finite-Lived Intangible Assets [Line Items]
Weighted-average useful life of intangible assets acquired		14 years
Future amortization expense
Impairment of intangible assets (excluding goodwill)				200,000
Tradenames
Finite-Lived Intangible Assets [Line Items]
Weighted-average useful life of intangible assets acquired		14 years
Customer relationships (including distribution network)
Finite-Lived Intangible Assets [Line Items]
Weighted-average useful life of intangible assets acquired		15 years
Future amortization expense
Impairment of intangible assets (excluding goodwill)				$ 300,000

Goodwill and Intangible Asset67

Goodwill and Intangible Assets - Gross Carrying Amount and Accumulated Amortization (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Intangible assets subject to amortization:
Weighted Average Useful Life	13 years	13 years
Accumulated Amortization	$ (554.2)	$ (518.2)
Intangible assets not subject to amortization - trademarks and tradenames
Gross Carrying Amount	1,131.7	1,076.8
Net Carrying Amount	$ 577.5	$ 558.6
Patents
Intangible assets subject to amortization:
Weighted Average Useful Life	10 years	10 years
Gross Carrying Amount	$ 53.1	$ 47
Accumulated Amortization	(39.3)	(37.7)
Net Carrying Amount	$ 13.8	$ 9.3
Customer relationships (including distribution network)
Intangible assets subject to amortization:
Weighted Average Useful Life	13 years	13 years
Gross Carrying Amount	$ 719.6	$ 685.8
Accumulated Amortization	(506.4)	(475.2)
Net Carrying Amount	$ 213.2	$ 210.6
Tradenames
Intangible assets subject to amortization:
Weighted Average Useful Life	13 years	12 years
Gross Carrying Amount	$ 40.1	$ 29.5
Accumulated Amortization	(8.5)	(5.3)
Net Carrying Amount	31.6	24.2
Intangible assets not subject to amortization - trademarks and tradenames
Intangible assets not subject to amortization - trademarks and tradenames	$ 318.9	$ 314.5

Other Current Liabilities - Sch

Other Current Liabilities - Schedule of Other Current Liabilities (Details) - USD ($) $ in Millions	Mar. 31, 2018	Mar. 31, 2017
Components of Other Current Liabilities [Line Items]
Other current liabilities	$ 149.8	$ 127.4
Customer advances
Components of Other Current Liabilities [Line Items]
Other current liabilities	11.5	10.9
Sales rebates
Components of Other Current Liabilities [Line Items]
Other current liabilities	26.9	25.5
Commissions
Components of Other Current Liabilities [Line Items]
Other current liabilities	7	6.3
Restructuring and other similar charges
Components of Other Current Liabilities [Line Items]
Other current liabilities	4.6	12
Product warranty
Components of Other Current Liabilities [Line Items]
Other current liabilities	8.9	7.5
Risk management
Components of Other Current Liabilities [Line Items]
Other current liabilities	10.1	8.9
Legal and environmental
Components of Other Current Liabilities [Line Items]
Other current liabilities	3.7	4.4
Taxes, other than income taxes
Components of Other Current Liabilities [Line Items]
Other current liabilities	8.7	10.5
Income taxes payable
Components of Other Current Liabilities [Line Items]
Other current liabilities	25.1	17.8
Interest payable
Components of Other Current Liabilities [Line Items]
Other current liabilities	8.7	5.7
Other
Components of Other Current Liabilities [Line Items]
Other current liabilities	$ 34.6	$ 17.9

Long-Term Debt - Summary of Deb

Long-Term Debt - Summary of Debt (Details) - USD ($) $ in Millions	Mar. 31, 2018	Mar. 31, 2017
Debt Instrument [Line Items]
Total	$ 1,356	$ 1,622.7
Less current maturities	3.9	16.5
Long-term debt	1,352.1	1,606.2
Term loans | Senior notes
Debt Instrument [Line Items]
Total	791.5	1,584.5
Unamortized original issue discount	8.5	17.9
4.875% Senior notes due 2025 | Senior notes
Debt Instrument [Line Items]
Total	494.2	0
Unamortized original issue discount	5.8
Securitization facility borrowings | Other
Debt Instrument [Line Items]
Total	18.3	0
Unamortized original issue discount	0.5
Other subsidiary debt | Other
Debt Instrument [Line Items]
Total	52	$ 38.2
Unamortized original issue discount	$ 0.5

Long-Term Debt - Narrative (Det

Long-Term Debt - Narrative (Details)	Dec. 07, 2017USD ($)Rate	Dec. 31, 2016USD ($)prepayment	Mar. 31, 2018USD ($)Rate	Mar. 31, 2017USD ($)Rate	Mar. 31, 2016USD ($)	Mar. 31, 2013USD ($)plantRate	Mar. 31, 2018USD ($)Rate	Mar. 31, 2012plant
Debt Instrument [Line Items]
Number of voluntary prepayments | prepayment		2
Proceeds from borrowings of debt			$ 1,529,800,000	$ 1,590,300,000	$ 900,000
Loss on extinguishment of debt			11,900,000	7,800,000	0
Amortization of deferred financing costs			1,900,000	2,400,000	2,000,000
Direct costs			15,300,000				$ 15,300,000
Long-term debt, gross			$ 1,371,300,000				1,371,300,000
Line of credit facility, unused capacity, daily aggregate commitment threshold of outstanding principal (less than) | Rate			50.00%
Outstanding principal			$ 1,356,000,000	1,622,700,000			$ 1,356,000,000
Interest paid			$ 69,900,000	84,900,000	84,100,000
North America | Manufacturing Facility
Debt Instrument [Line Items]
Number of plants | plant						2		2
Maximum
Debt Instrument [Line Items]
Unused capacity, commitment fee percentage			0.50%
Minimum
Debt Instrument [Line Items]
Unused capacity, commitment fee percentage | Rate			0.375%
London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate | Rate			1.75%
Term loans | Term Loan Facility
Debt Instrument [Line Items]
Maximum borrowing capacity				1,950,000,000
Long-term debt, voluntary prepayment		$ 290,000,000
Loss on extinguishment of debt				$ 2,400,000
Reduction of basis spread on variable rate				1.00%
Net first lien leverage ratio (less than)			1.5				1.5
Term loans | Term Loan Facility | ABR Borrowings
Debt Instrument [Line Items]
Basis spread on variable rate | Rate				2.00%
Term loans | Term Loan Facility | Eurocurrency Borrowings
Debt Instrument [Line Items]
Basis spread on variable rate | Rate				3.00%
Term loans | Amended Term Refinancing Loan Facility
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 800,000,000
LIBOR Floor, Scenario One	0.00%
LIBOR Floor, Scenario Two | Rate	0.00%
Weighted-average effective interest rate | Rate			4.11%				4.11%
Weighted average effective interest rate, over time							3.81%
Loss on extinguishment of debt			$ 11,900,000
Amortization of deferred financing costs			3,900,000
Direct costs			800,000				$ 800,000
Term loans | Amended Term Refinancing Loan Facility | London Interbank Offered Rate (LIBOR), Scenario One
Debt Instrument [Line Items]
Basis spread on variable rate | Rate	2.25%
Term loans | Amended Term Refinancing Loan Facility | Base Rate, Scenario One
Debt Instrument [Line Items]
Basis spread on variable rate | Rate	1.25%
Term loans | Amended Term Refinancing Loan Facility | London Interbank Offered Rate (LIBOR), Scenario Two
Debt Instrument [Line Items]
Basis spread on variable rate | Rate	2.00%
Term loans | Amended Term Refinancing Loan Facility | Base Rate, Scenario Two
Debt Instrument [Line Items]
Basis spread on variable rate | Rate	1.00%
Term loans | Senior notes
Debt Instrument [Line Items]
Outstanding principal			791,500,000	$ 1,584,500,000			791,500,000
Term loans | Term Refinancing Loan Facility
Debt Instrument [Line Items]
Maximum borrowing capacity			800,000,000	1,606,400,000			800,000,000
Loss on extinguishment of debt			8,000,000
Amortization of deferred financing costs				5,400,000
Term loans | Term Loan Facility and Term Refinancing Loan Facility
Debt Instrument [Line Items]
Loss on extinguishment of debt				7,800,000
Term loans | Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity			264,000,000	$ 265,000,000			264,000,000
Covenant terms, company's ratio				3
Unused capacity, commitment fee percentage | Rate				0.50%
Long-term debt, gross			0	$ 0			0
Outstanding letters of credit			$ 8,300,000	14,600,000			$ 8,300,000
Term loans | Revolving Credit Facility | Letter of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity				$ 60,000,000	$ 80,000,000
Term loans | Credit Facility
Debt Instrument [Line Items]
Covenant terms, company's ratio | Rate			300.00%				300.00%
Term loans | Credit Facility | Maximum | Senior Secured Leverage Ratio (Numerator)
Debt Instrument [Line Items]
Covenant terms, positive ratio			6.75	6.75			6.75
Term loans | Amended Credit Facility | Maximum | Senior Secured Leverage Ratio (Numerator)
Debt Instrument [Line Items]
Transaction related costs			$ 200,000				$ 200,000
4.875% Senior notes due 2025 | Senior notes
Debt Instrument [Line Items]
Proceeds from borrowings of debt	$ 500,000,000
Direct costs			6,000,000				6,000,000
Interest rate | Rate	4.875%
Redemption price, percentage | Rate	40.00%
Percentage of principal amount redeemed | Rate	101.00%
Restricted subsidiaries, amount	$ 50,000,000
Outstanding principal			494,200,000	$ 0			494,200,000
New Market Tax Credit- Phase 2 | Other
Debt Instrument [Line Items]
Proceeds from borrowings of long-term debt						$ 9,800,000
New Market Tax Credit | Other
Debt Instrument [Line Items]
Long-term debt, gross						37,400,000
Payments to acquire loans receivable						$ 27,600,000
Loan receivable, terms						30 years
Loan receivable, stated percentage | Rate						2.00%
Forgiveness of debt, possible non-operating gain (up to)						$ 9,800,000
Loans receivables			27,600,000	27,600,000		$ 27,600,000	27,600,000
Outstanding principal			36,900,000	36,900,000			36,900,000
Other
Debt Instrument [Line Items]
Long-term debt, gross			33,900,000	1,400,000			33,900,000
Other | Other
Debt Instrument [Line Items]
Outstanding principal			52,000,000	38,200,000			52,000,000
Accounts Receivable Securitization Program | Other
Debt Instrument [Line Items]
Maximum borrowing capacity			100,000,000				100,000,000
Long-term debt, gross			18,800,000	0			18,800,000
Outstanding letters of credit			7,900,000	4,600,000			7,900,000
Remaining borrowing capacity			100,000,000				100,000,000
Outstanding principal			$ 18,300,000	$ 0			$ 18,300,000

Long-Term Debt - Future Debt Ma

Long-Term Debt - Future Debt Maturities (Details) $ in Millions	Mar. 31, 2018USD ($)
Debt Disclosure [Abstract]
Debt issuance costs	$ 15.3
Years ending March 31:
2,019	3.9
2,020	18.8
2,021	20.2
2,022	1.1
2,023	1.1
Thereafter	1,326.2
Long-term debt, gross	$ 1,371.3

Derivative Financial Instrume72

Derivative Financial Instruments - Narrative (Details)	12 Months Ended
	Mar. 31, 2018USD ($)derivative	Mar. 31, 2017USD ($)	Mar. 31, 2016USD ($)	Mar. 31, 2015USD ($)
Derivatives, Fair Value [Line Items]
Amount reclassified from accumulated other comprehensive loss into earnings	$ 9,700,000	$ 10,200,000	$ 5,200,000
Estimated reclassification of accumulated other comprehensive gain (loss)	$ 5,700,000
Interest rate swaps
Derivatives, Fair Value [Line Items]
Number of interest rate derivatives held | derivative	3
Derivative, notional amount			$ 650,000,000
Weighted average fixed interest rate			2.55%
Interest rate caps
Derivatives, Fair Value [Line Items]
Number of interest rate derivatives held | derivative	2
Derivative liability, notional amount				$ 750,000,000
Derivative, cap interest rate				3.00%
Derivative premium				$ 5,800,000

Derivative Financial Instrume73

Derivative Financial Instruments - Fair Value of Derivative Instruments (Details) - USD ($) $ in Millions	Mar. 31, 2018	Mar. 31, 2017
Other assets | Designated as hedging instruments | Interest rate caps
Derivative [Line Items]
Asset Derivatives	$ 0	$ 0
Other current assets | Not designated as hedging instrument | Foreign currency forward contracts
Derivative [Line Items]
Asset Derivatives	0.4	0
Other current liabilities | Designated as hedging instruments | Interest rate swaps
Derivative [Line Items]
Liability Derivatives	0.8	0
Other current liabilities | Not designated as hedging instrument | Foreign currency forward contracts
Derivative [Line Items]
Liability Derivatives	0	0.1
Other liabilities | Designated as hedging instruments | Interest rate swaps
Derivative [Line Items]
Liability Derivatives	$ 0	$ 10.3

Derivative Financial Instrume74

Derivative Financial Instruments - Gain/Loss in AOCI (Details) - Designated as hedging instruments - USD ($) $ in Millions	Mar. 31, 2018	Mar. 31, 2017
Interest rate swaps
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amount of loss recognized in accumulated other comprehensive loss	$ 2.3	$ 6.4
Interest rate caps
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amount of loss recognized in accumulated other comprehensive loss	$ 1.4	$ 3.1

Derivative Financial Instrume75

Derivative Financial Instruments - Gain or Loss Recognized in Income (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Interest expense, net | Interest rate swaps
Trading Activity, Gains and Losses, Net [Line Items]
Amount recognized as (income) expense	$ (5)	$ 0	$ 0
Foreign currency forward contracts | Other (income) expense , net
Trading Activity, Gains and Losses, Net [Line Items]
Amount recognized as (income) expense	$ 0.2	$ (0.3)	$ 0

Fair Value Measurements - Asset

Fair Value Measurements - Assets and Liabilities Recognized at Fair Value on a Recurring Basis (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Millions	Mar. 31, 2018	Mar. 31, 2017
Liabilities:
Total liabilities at fair value	$ 0.8	$ 10.4
Assets:
Total assets at fair value	0.4
Interest rate swaps
Liabilities:
Interest rate swaps	0.8	10.3
Foreign currency forward contracts
Liabilities:
Foreign currency forward contracts		0.1
Assets:
Foreign currency forward contracts	0.4
Level 1
Liabilities:
Total liabilities at fair value	0	0
Assets:
Total assets at fair value	0
Level 1 | Interest rate swaps
Liabilities:
Interest rate swaps	0	0
Level 1 | Foreign currency forward contracts
Liabilities:
Foreign currency forward contracts		0
Assets:
Foreign currency forward contracts	0
Level 2
Liabilities:
Total liabilities at fair value	0.8	10.4
Assets:
Total assets at fair value	0.4
Level 2 | Interest rate swaps
Liabilities:
Interest rate swaps	0.8	10.3
Level 2 | Foreign currency forward contracts
Liabilities:
Foreign currency forward contracts		0.1
Assets:
Foreign currency forward contracts	0.4
Level 3
Liabilities:
Total liabilities at fair value	0	0
Assets:
Total assets at fair value	0
Level 3 | Interest rate swaps
Liabilities:
Interest rate swaps	0	0
Level 3 | Foreign currency forward contracts
Liabilities:
Foreign currency forward contracts		$ 0
Assets:
Foreign currency forward contracts	$ 0

Fair Value Measurements - Narra

Fair Value Measurements - Narrative (Details) - USD ($) $ in Millions	1 Months Ended
	Apr. 30, 2018	Mar. 31, 2018	Mar. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of long-term debt		$ 1,361.8	$ 1,644.6
Property, plant and equipment, net		456.4	400.9
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets to be sold per agreement		3.8	3.4
Facility Closing
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Property, plant and equipment, net		$ 5.6	7
Process & Motion Control
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets held-for-sale			5.4
Water Management
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets held-for-sale			$ 1.6
Subsequent Event | Facility Closing
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Property, Plant and Equipment, Disposals	$ 4.1

Leases - Narrative and Schedule

Leases - Narrative and Schedule of Future Payments (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Leases [Abstract]
Rent expense	$ 21.8	$ 20.7	$ 18.2
Years ending March 31:
2,019	19.1
2,020	17.7
2,021	11.9
2,022	9.4
2,023	8.4
Thereafter	40.7
Future minimum rental payments	$ 107.2

Stock-Based Compensation - Narr

Stock-Based Compensation - Narrative (Details) - USD ($)	May 18, 2016	May 21, 2015	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2018	Jul. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense			$ 20,500,000	$ 13,400,000	$ 7,500,000
Tax benefit on stock-based compensation			6,500,000	4,700,000	2,800,000
Excess tax benefit related to stock options exercised			1,300,000	$ 8,300,000	$ 4,000,000
Unrecognized compensation cost			$ 23,700,000			$ 23,700,000
Unrecognized compensation cost, weighted-average period of recognition			1 year 7 months 10 days
Expected dividends			$ 0
Weighted-average grant date fair value (in dollars per share)			$ 8.12	$ 6.41	$ 6.92
Fair value of options vested			$ 16,000,000	$ 5,800,000	$ 9,800,000
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			3 years	3 years	3 years
Performance Shares | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights, percentage			0.00%	0.00%	0.00%
Performance Shares | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights, percentage			200.00%	200.00%	200.00%
Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award maximum term	10 years
Percentage vesting after three years							50.00%
Vesting period		4 years
Percentage vesting after five years							50.00%
Shares authorized to be granted (in shares)	12,150,000
Incentive Plan | 50% Vest After Three Years
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period							3 years
Incentive Plan | 50% Vest After Five Years
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period							5 years
Incentive Plan | Options Granted to Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			3 years		3 years	3 years

Stock-Based Compensation - Fair

Stock-Based Compensation - Fair Value Options Granted (Details) - USD ($)	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected dividend rate	$ 0
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected option term (in years)	6 years 6 months	6 years 6 months	6 years 6 months
Expected volatility factor	31.00%	29.00%	24.00%
Weighted-average risk free interest rate	1.99%	1.58%	1.82%
Expected dividend rate	$ 0	$ 0	$ 0

Stock-Based Compensation - Stoc

Stock-Based Compensation - Stock Options (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2015
Shares
Outstanding at beginning of period (in shares)	7,770,670	7,854,685	8,588,518
Granted (in shares)	1,176,205	2,602,014	1,072,556
Exercised (in shares)	(543,443)	(2,116,571)	(1,278,017)
Cancelled/Forfeited (in shares)	(285,485)	(569,458)	(528,372)
Outstanding at end of period (in shares)	8,117,947	7,770,670	7,854,685
Exercisable at end of period (in shares)	4,810,737	3,221,622	4,678,216
Weighted Avg. Exercise Price
Outstanding at beginning of period (in dollars per share)		$ 18.73	$ 15.10	$ 13.04
Granted (in dollars per share)	$ 23.17	19.72	24.14
Exercised (in dollars per share)	14.89	5.18	5.55
Canceled/Forfeited (in dollars per share)	22.55	23.34	23.53
Outstanding at end of period (in dollars per share)	19.50	18.73	15.10
Exercisable at end of period (in dollars per share)	$ 17.93	$ 15.25	$ 9.52
Total intrinsic value of options exercised	$ 6.4	$ 29.1	$ 16.3
Weighted average remaining contractual life of options outstanding	6 years 1 month 6 days	6 years 7 months 6 days	5 years
Aggregate intrinsic value of options outstanding	$ 82.7
Weighted average remaining contractual life of options exercisable	4 years 8 months 12 days	4 years 7 months 6 days	3 years
Aggregate intrinsic value of options exercisable	$ 56.5

Stock-Based Compensation - Nonv

Stock-Based Compensation - Nonvested Options (Details) - $ / shares	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Shares
Nonvested options at beginning of period (in shares)	4,549,048
Granted (in shares)	1,176,205	2,602,014	1,072,556
Vested (in shares)	(2,169,627)
Canceled/Forfeited (in shares)	(248,416)
Nonvested options at end of period (in shares)	3,307,210	4,549,048
Weighted Avg. Exercise Price
Nonvested options at beginning of period (in dollars per share)	$ 21.20
Granted (in dollars per share)	23.17	$ 19.72	$ 24.14
Vested (in dollars per share)	21.31
Canceled/Forfeited (in dollars per share)	21.96
Nonvested options at end of period (in dollars per share)	$ 21.77	$ 21.20

Stock-Based Compensation - No83

Stock-Based Compensation - Nonvested Stock Unit Activity (Details) - $ / shares	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Restricted Stock Units (RSUs)
Units
Nonvested units at beginning of period (in shares)	322,142	125,307	53,813
Granted (in shares)	250,013	279,445	96,952
Vested (in shares)	(150,784)	(48,207)	(12,866)
Canceled/Forfeited (in shares)	(53,189)	(34,403)	(12,592)
Nonvested units at end of period (in shares)	368,182	322,142	125,307
Weighted Avg. Grant Date Fair Value
Nonvested units at beginning of period (in dollars per share)	$ 20.59	$ 24.67	$ 29.06
Granted (in dollars per share)	23.19	19.53	23.20
Vested (in dollars per share)	21.92	24.01	29.09
Canceled/Forfeited (in dollars per share)	22.41	22	27.62
Nonvested units at end of period (in dollars per share)	$ 21.55	$ 20.59	$ 24.67
Performance Shares
Units
Nonvested units at beginning of period (in shares)	259,930	49,136	0
Granted (in shares)	193,071	219,266	50,711
Vested (in shares)	0	0	0
Canceled/Forfeited (in shares)	0	(8,472)	(1,575)
Nonvested units at end of period (in shares)	453,001	259,930	49,136
Weighted Avg. Grant Date Fair Value
Nonvested units at beginning of period (in dollars per share)	$ 24.74	$ 28.57	$ 0
Granted (in dollars per share)	26.58	23.95	28.57
Vested (in dollars per share)	0	0	0
Canceled/Forfeited (in dollars per share)	0	25.90	28.57
Nonvested units at end of period (in dollars per share)	$ 25.53	$ 24.74	$ 28.57

Stock-Based Compensation - Fa84

Stock-Based Compensation - Fair Value PSUs (Details) - Performance Shares - $ / shares	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility factor	31.00%	30.00%	31.00%
Weighted-average risk-free interest rate	1.45%	0.86%	1.01%
Expected dividend rate	0.00%	0.00%	0.00%
PSU fair value per share (in dollars per share)	$ 31.25	$ 27.67	$ 32.06

Retirement Benefits - Narrative

Retirement Benefits - Narrative (Details) $ in Millions	12 Months Ended
	Mar. 31, 2018USD ($)categoryRate	Mar. 31, 2017USD ($)	Mar. 31, 2016USD ($)	Dec. 31, 2017plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Actuarial (gain) loss on pension and postretirement benefit obligations	$ (3.3)	$ (2.6)	$ 12.9
Number of plans | plan				3
Contributions	2.9	4.9	4.9
Plan assets	507.4	513
Multi-employer and government-sponsored plans - Expense recognized		0.2	0.2
Defined contribution savings plan - expense recognized	15	12.4	14.2
Pension Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Actuarial (gain) loss on pension and postretirement benefit obligations	7.3	11.8
Contributions	5.9	8.6
Projected benefit obligation	659	665.4	674
Plan assets	507.4	513	503.6
Under-funded status	151.6	152.4
Future amortization of prior service cost (credit)	$ 0
Number of investment categories | category	2
Pension plans that are not fully funded - projected benefit obligation	$ 625	658.9
Pension plans that are not fully funded - accumulated benefit obligation	620	652.2
Pension plans that are not fully funded - fair value of plan assets	472.8	506.1
Other Postretirement Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Actuarial (gain) loss on pension and postretirement benefit obligations	2.8	3.7
Contributions	3	3.1
Projected benefit obligation	21.5	25.7	29.6
Plan assets	0	0	$ 0
Under-funded status	21.5	$ 25.7
Future amortization of prior service cost (credit)	$ 1.2
Assumed health care cost trend rate, percent | Rate	6.50%
Ultimate health care cost trend rate, percent | Rate	5.00%

Retirement Benefits - Pension a

Retirement Benefits - Pension and Other Postretirement Benefits (Details) $ in Millions	12 Months Ended
	Mar. 31, 2018USD ($)	Mar. 31, 2017USD ($)facility	Mar. 31, 2016USD ($)
Pension Benefits
Pension and Other Postretirement Benefits:
Service cost	$ 1	$ 1.8	$ 2.2
Interest cost	24.4	25.7	25.5
Expected return on plan assets	(26.7)	(27.1)	(28.8)
Amortization of:
Prior service cost	0	0.1	0.1
(Income) cost associated with special events:
Curtailment	(0.3)	(1.4)	0
Contractual termination benefits	0	2.2	0
Recognition of actuarial (gains) losses	(1.1)	0	13
Net periodic benefit (income) cost	(2.7)	1.3	12
Non-cash net curtailment gain	0.3	1
Contractual termination benefits	0	$ (2.2)	0
Number of manufacturing facilities closed | facility		1
Pension Benefits | Facility Closing
(Income) cost associated with special events:
Curtailment		$ 0.4
Postretirement Benefits
Pension and Other Postretirement Benefits:
Service cost	0	0.1	0.1
Interest cost	1	1.1	1.2
Amortization of:
Prior service cost	(1.9)	(2)	(2)
(Income) cost associated with special events:
Curtailment	0	0.4	0
Contractual termination benefits	0	0
Recognition of actuarial (gains) losses	(1.9)	(1.6)	(0.1)
Net periodic benefit (income) cost	(2.8)	(2)	$ (0.8)
Contractual termination benefits	$ 0	$ 0

Retirement Benefits - Status of

Retirement Benefits - Status of Plans (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Actuarial gains	$ (3.3)	$ (2.6)	$ 12.9
Plan assets at the beginning of the period	513
Contributions	2.9	4.9	4.9
Plan assets at end of period	507.4	513
Net amount on Consolidated Balance Sheets consists of:
Current liabilities	(4.5)	(4.3)
Long-term liabilities	(169.2)	(174.4)
Pension Benefits
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Benefit obligation at beginning of period	(665.4)	(674)
Service cost	(1)	(1.8)	(2.2)
Interest cost	(24.4)	(25.7)	(25.5)
Actuarial gains	7.3	11.8
Benefits paid	41.2	39.8
Plan participant contributions	(0.1)	(0.3)
Acquisitions	(6.3)	(18.3)
Contractual termination benefits	0	(2.2)	0
Curtailments	0.3	2.5
Translation adjustment	(10.6)	2.8
Benefit obligation at end of period	(659)	(665.4)	(674)
Plan assets at the beginning of the period	513	503.6
Actual return on plan assets	23.6	26.6
Contributions	5.9	8.6
Benefits paid	(41.2)	(39.8)
Acquisition	2.3	14.9
Translation adjustment	3.8	(0.9)
Plan assets at end of period	507.4	513	503.6
Funded status of plans	(151.6)	(152.4)
Net amount on Consolidated Balance Sheets consists of:
Non-current assets	0.6	0.6
Current liabilities	(2.4)	(2.2)
Long-term liabilities	(149.8)	(150.8)
Total net funded status	(151.6)	(152.4)
Postretirement Benefits
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Benefit obligation at beginning of period	(25.7)	(29.6)
Service cost	0	(0.1)	(0.1)
Interest cost	(1)	(1.1)	(1.2)
Actuarial gains	2.8	3.7
Benefits paid	3	3.1
Plan participant contributions	(0.6)	(0.6)
Acquisitions	0	0
Contractual termination benefits	0	0
Curtailments	0	(1.1)
Translation adjustment	0	0
Benefit obligation at end of period	(21.5)	(25.7)	(29.6)
Plan assets at the beginning of the period	0	0
Actual return on plan assets	0	0
Contributions	3	3.1
Benefits paid	(3)	(3.1)
Acquisition		0
Translation adjustment		0
Plan assets at end of period	0	0	$ 0
Funded status of plans	(21.5)	(25.7)
Net amount on Consolidated Balance Sheets consists of:
Non-current assets	0	0
Current liabilities	(2.1)	(2.1)
Long-term liabilities	(19.4)	(23.6)
Total net funded status	$ (21.5)	$ (25.7)

Retirement Benefits - Accumulat

Retirement Benefits - Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	Mar. 31, 2018	Mar. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Unrecognized prior service credit	$ (1.4)	$ (3.2)
Unrecognized actuarial loss (gain)	44.5	48.6
Accumulated other comprehensive loss (income), gross	43.1	45.4
Deferred income tax (benefit) provision	(14.9)	(17.2)
Accumulated other comprehensive loss (income), net	28.2	28.2
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Unrecognized prior service credit	(0.2)	(0.1)
Unrecognized actuarial loss (gain)	46.2	49.4
Accumulated other comprehensive loss (income), gross	46	49.3
Deferred income tax (benefit) provision	(15.9)	(18.7)
Accumulated other comprehensive loss (income), net	30.1	30.6
Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Unrecognized prior service credit	(1.2)	(3.1)
Unrecognized actuarial loss (gain)	(1.7)	(0.8)
Accumulated other comprehensive loss (income), gross	(2.9)	(3.9)
Deferred income tax (benefit) provision	1	1.5
Accumulated other comprehensive loss (income), net	$ (1.9)	$ (2.4)

Retirement Benefits - Significa

Retirement Benefits - Significant Assumptions (Details)	12 Months Ended
	Mar. 31, 2018Rate	Mar. 31, 2017Rate	Mar. 31, 2016Rate
Pension Benefits
Benefit Obligations:
Discount rate	3.70%	3.90%	3.80%
Rate of compensation increase	2.90%	3.00%	3.10%
Net Periodic Benefit Cost:
Discount rate	3.90%	3.80%	3.70%
Rate of compensation increase	3.00%	3.00%	3.40%
Expected return on plan assets	5.30%	5.30%	5.30%
Postretirement Benefits
Benefit Obligations:
Discount rate	4.00%	4.00%	3.90%
Net Periodic Benefit Cost:
Discount rate	4.00%	3.90%	3.80%

Retirement Benefits - Target In

Retirement Benefits - Target Investment Allocations (Details)	12 Months Ended
	Mar. 31, 2018Rate	Mar. 31, 2017Rate
Equity securities
Defined Benefit Plan Disclosure [Line Items]
Investment policy, minimum allocation	20.00%
Investment policy, maximum allocation	30.00%
Target Allocation	29.00%
Actual Allocation	28.00%	30.00%
Debt securities (including cash and cash equivalents)
Defined Benefit Plan Disclosure [Line Items]
Investment policy, minimum allocation	55.00%
Investment policy, maximum allocation	80.00%
Target Allocation	65.00%
Actual Allocation	65.00%	64.00%
Other
Defined Benefit Plan Disclosure [Line Items]
Investment policy, minimum allocation	0.00%
Investment policy, maximum allocation	10.00%
Target Allocation	6.00%
Actual Allocation	7.00%	6.00%

Retirement Benefits - Fair Valu

Retirement Benefits - Fair Value Measurements (Details) - USD ($) $ in Millions	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 507.4	$ 513
Assets measured at net asset value	461.7	472.6
Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	15.5	16.5
Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	30.2	23.9
Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	5.9	6.5
Assets measured at net asset value	3.7	4.5
Cash and cash equivalents | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	2.2	2
Cash and cash equivalents | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Cash and cash equivalents | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fixed income funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	328	326.3
Assets measured at net asset value	317.3	317.5
Fixed income funds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	10.7	8.8
Fixed income funds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fixed income funds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
US equity funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	61.9	68.9
Assets measured at net asset value	59.6	65.2
US equity funds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	2.3	3.7
US equity funds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
US equity funds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
International equity funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	35.9	40.5
Assets measured at net asset value	35.6	38.5
International equity funds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.3	2
International equity funds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
International equity funds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Balanced funds
Defined Benefit Plan Disclosure [Line Items]
Assets measured at net asset value	9.5	9.3
Alternative Investments
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	36	37.6
Assets measured at net asset value	36	37.6
Alternative Investments | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Alternative Investments | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Alternative Investments | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Insurance contracts
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	30.2	23.9
Assets measured at net asset value	0	0
Insurance contracts | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Insurance contracts | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Insurance contracts | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 30.2	$ 23.9	$ 22.6

Retirement Benefits - Changes i

Retirement Benefits - Changes in Fair Value of Level 3 Investments (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Plan assets at the beginning of the period	$ 513
Actual return on assets:
Plan assets at end of period	507.4	$ 513
Level 3
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Plan assets at the beginning of the period	23.9
Actual return on assets:
Plan assets at end of period	30.2	23.9
Insurance Contracts
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Plan assets at the beginning of the period	23.9
Actual return on assets:
Plan assets at end of period	30.2	23.9
Insurance Contracts | Level 3
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Plan assets at the beginning of the period	23.9	22.6
Actual return on assets:
Related to assets held at reporting date	3.9	1.3
Related to assets acquired by acquisition	2.4
Related to assets sold during the period	0	0
Purchases, sales, issuances and settlements	0	0
Plan assets at end of period	$ 30.2	$ 23.9

Retirement Benefits - Expected

Retirement Benefits - Expected Future Benefit Payments (Details) $ in Millions	Mar. 31, 2018USD ($)
Pension Benefits:
Defined Benefit Plan Disclosure [Line Items]
2,019	$ 41.2
2,020	41.3
2,021	41.1
2,022	41
2,023	40.8
2024-2028	200
Other Postretirement Benefits:
Defined Benefit Plan Disclosure [Line Items]
2,019	2.1
2,020	2.2
2,021	2.1
2,022	1.9
2,023	1.7
2024-2028	$ 7.1

Retirement Benefits - Assumed H

Retirement Benefits - Assumed Health Care Cost Trend (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Retirement Benefits [Abstract]
One percentage point increase - Increase (decrease) in total of service and interest cost components	$ 0.1	$ 0.1	$ 0.1
One percentage point decrease - increase (decrease) in total of service and interest cost components	(0.1)	(0.1)	(0.1)
One percentage point increase - increase (decrease) in postretirement benefit obligation	1.5	2.1	2.6
One percentage point decrease - increase (decrease) in postretirement benefit obligation	$ (1.3)	$ (1.8)	$ (2.2)

Retirement Benefits - Deferred

Retirement Benefits - Deferred Compensation Plan (Details) - Supplemental Employee Retirement Plan - USD ($) $ in Millions	Mar. 31, 2018	Mar. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 3.5	$ 1.4
Plan liabilities	0	1.4
Level 1
Defined Benefit Plan Disclosure [Line Items]
Plan assets	1.6	1.4
Plan liabilities	3.5	1.4
Level 2
Defined Benefit Plan Disclosure [Line Items]
Plan assets	1.9	0
Plan liabilities	0	0
Level 3
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0	0
Plan liabilities	0	0
Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Plan assets	1.6	1.4
Mutual Funds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Plan assets	1.6	1.4
Mutual Funds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0	0
Mutual Funds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0	$ 0
Corporate owned life insurance
Defined Benefit Plan Disclosure [Line Items]
Plan assets	1.9
Corporate owned life insurance | Level 1
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0
Corporate owned life insurance | Level 2
Defined Benefit Plan Disclosure [Line Items]
Plan assets	1.9
Corporate owned life insurance | Level 3
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 0

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Operating Loss Carryforwards [Line Items]
Blended federal income tax rate			31.55%
Estimated income tax benefit, effect of U.S. tax reform			$ 66.5
Tax benefit associated with remeasurement of deferred tax liability			66.5
One-time repatriation tax, included in repatriated earnings from foreign subsidiaries			1.4
Remeasurement of unrecognized tax benefits, one-time repatriation tax			1.4
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount			$ 12.7
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent			79.00%	65.00%
Foreign NOL carryforwards			$ 113.2
Valuation allowance for foreign NOL carryforward			21.1
Undistributed earnings of foreign subsidiaries			136
Undistributed earnings of foreign subsidiaries, potential related taxes			6.6
Other liabilities	$ 6.9		6	$ 6.9
Net cash paid for income taxes			60.7	40	$ 46.9
Liability for unrecognized tax benefits	18.1		20.1	18.1
Unrecognized tax benefits, income tax penalties and interest accrued	4.7		5.7	4.7
Unrecognized tax benefits, income tax penalties and interest expense (benefit)			1	0.6	$ (8.6)
Other Current Liabilities
Operating Loss Carryforwards [Line Items]
Accrued income taxes, current	17.8		25.1	17.8
Other Current Assets
Operating Loss Carryforwards [Line Items]
Income taxes receivable	10.9		19.1	$ 10.9
State Tax Authority
Operating Loss Carryforwards [Line Items]
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount			3.9
State tax net operating loss carryforwards			498.2
State tax net operating loss carryforwards, valuation allowance			$ 19.3
Foreign Tax Authority | Ministry of Economic Affairs and Finance, Italy
Operating Loss Carryforwards [Line Items]
Income tax examination, penalties and interest expense		$ 0.7
Foreign Tax Authority | Federal Ministry of Finance, Germany
Operating Loss Carryforwards [Line Items]
Income tax examination, penalties and interest expense	$ 0.4

Income Taxes - Income Tax Provi

Income Taxes - Income Tax Provision (Benefit) (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Current:
United States	$ 26.7	$ 12.1	$ 24
Non-United States	25.5	20.3	15.3
State and local	3.9	2.2	3.9
Total current	56.1	34.6	43.2
Deferred:
United States	(70.4)	(18)	(10.2)
Non-United States	(3)	(6.8)	1.1
State and local	(2.2)	(1.9)	(17)
Total deferred	(75.6)	(26.7)	(26.1)
(Benefit) Provision for income taxes	$ (19.5)	$ 7.9	$ 17.1

Income Taxes - U.S. Statutory I

Income Taxes - U.S. Statutory Income Tax Rate Reconciliation (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Income Tax Disclosure [Abstract]
Provision for income taxes at U.S. federal statutory income tax rate	$ 17.8	$ 28.7	$ 30.1
State and local income taxes, net of federal benefit	2.9	0.8	2.7
Net effects of foreign rate differential	(2.5)	(1.3)	(3)
Net effects of foreign operations	(8.4)	(4.4)	(2.1)
Net effect to deferred taxes for U.S. Tax Reform	(66.5)	0	0
Nondeductible goodwill impairment charges	35.1	0	0
Unrecognized tax benefits, net of federal benefit	1.1	0.5	(11.3)
Domestic production activities deduction	(3.2)	(2.7)	(1.3)
Research and development credit	(0.9)	(7.6)	0
Excess tax benefits related to equity compensation	(0.5)	(7)	0
Changes in valuation allowance	4.8	0.5	2.3
Other	0.8	0.4	(0.3)
(Benefit) Provision for income taxes	$ (19.5)	$ 7.9	$ 17.1

Income Taxes - Components of In

Income Taxes - Components of Income (Loss) Before Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Income Tax Disclosure [Abstract]
United States	$ 86.6	$ 50.4	$ 45.3
Non-United States	(30.1)	31.6	40.7
Income from continuing operations before income taxes	$ 56.5	$ 82	$ 86

Income Taxes - Deferred Income

Income Taxes - Deferred Income Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Mar. 31, 2018	Mar. 31, 2017
Deferred tax assets:
Compensation and retirement benefits	$ 47.9	$ 79.9
General accruals and reserves	9.2	18.1
State tax net operating loss carryforwards	23.1	19.2
Foreign net operating loss and interest carryforwards	33.3	22.5
Other	1.2	7.9
Total deferred tax assets before valuation allowance	114.7	147.6
Valuation allowance	(40.4)	(27.7)
Total deferred tax assets	74.3	119.9
Deferred tax liabilities:
Property, plant and equipment	37	39.9
Inventories	18.1	31.5
Intangible assets and goodwill	153.6	217.5
Cancellation of indebtedness	7.1	27.6
Total deferred tax liabilities	215.8	316.5
Net deferred tax liabilities	141.5	196.6
Net amount on Consolidated Balance Sheet consists of:
Other assets	15.1	12.2
Deferred income taxes	(156.6)	(208.8)
Net long-term deferred tax liabilities	$ (141.5)	$ (196.6)

Income Taxes - Gross Unrecogniz

Income Taxes - Gross Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Reconciliation of Unrecognized Tax Benefits [Roll Forward]
Balance at beginning of period	$ 15	$ 13.2
Additions based on tax positions related to the current year	0.8	0.8
Additions for tax positions of prior years	0	2.8
Reductions for tax positions of prior years	0	0
Settlements	0	0
Reductions due to lapse of applicable statute of limitations	(0.6)	(1.7)
Cumulative translation adjustment, increase	0.4
Cumulative translation adjustment, decrease		(0.1)
Balance at end of period	$ 15.6	$ 15

Commitments and Contingencies -

Commitments and Contingencies - Narrative (Details)	12 Months Ended
	Mar. 31, 2018USD ($)claimantlawsuitRate	Mar. 31, 2013USD ($)	Dec. 31, 2002claimantreleaselawsuitdefendantRate
Loss Contingencies [Line Items]
Indemnity obligations (in excess of)	$ 900,000,000
Available insurance coverage	239,600,000
Net proceeds from sale-leaseback transaction	5,800,000
Gain or loss recognized, sale-leaseback transaction	0
Financing lease obligation	7,500,000
Layer 1
Loss Contingencies [Line Items]
Available insurance coverage	$ 163,600,000
Environmental Issue | Ellsworth Industrial Park Site
Loss Contingencies [Line Items]
Number of defendants (at least) | defendant			10
Number of releases, or threatened releases, chlorinated solvents (or more) | release			1
Percentage of indemnity obligations paid by seller			100.00%
Asbestos Issue | Stearns
Loss Contingencies [Line Items]
Percentage of indemnity obligations paid by seller			100.00%
Number of pending claims | claimant			300
Asbestos Issue | Prager
Loss Contingencies [Line Items]
Number of pending lawsuits | lawsuit			2
Percentage of costs paid by insurance providers | Rate			100.00%
Asbestos Issue | Falk
Loss Contingencies [Line Items]
Percentage of indemnity obligations paid by seller | Rate	100.00%
Number of pending claims | claimant	100
Asbestos Issue | Zurn
Loss Contingencies [Line Items]
Number of pending claims | claimant	16,200
Number of pending lawsuits | lawsuit	6,400
Timeframe of estimated claims disbursements	10 years
Estimate of potential liability	$ 38,000,000
Amount expected to be paid by insurance providers	$ 29,000,000
Damages from Product Defects | Zurn
Loss Contingencies [Line Items]
Claim settlement funding period		7 years
Settlement amount		$ 20,000,000

Public Offering and Common S103

Public Offering and Common Stock Repurchases - Narrative (Details)	Dec. 07, 2016USD ($)$ / sharesshares	Mar. 31, 2018USD ($)shares	Mar. 31, 2017USD ($)shares	Mar. 31, 2016USD ($)$ / sharesshares	Mar. 31, 2015USD ($)
Treasury stock acquired, average cost per share (in dollars per share) | $ / shares				$ 25.76
Term Loan | Credit Facility
Payments of debt extinguishment costs	$ 195,000,000
Depositary Shares
Shares issued (in shares) | shares	8,050,000
Preferred stock, conversion ratio	0.05
Redeemable Convertible Preferred Stock
Shares issued (in shares) | shares	402,500	402,500	402,500
Dividend rate, percentage	5.75%	5.75%
Offering price (in dollars per share) | $ / shares	$ 50
Liquidation preference per share (in dollars per share) | $ / shares	$ 1,000
Proceeds from issuance of convertible preferred stock	$ 389,700,000
Accrued dividends		$ 23,200,000	$ 7,300,000
Cash dividends paid		23,200,000	$ 4,400,000
Dividends in arrears		$ 0
Redeemable Convertible Preferred Stock | Minimum
Shares issued upon conversion (in shares) | shares	39.7020
Redeemable Convertible Preferred Stock | Maximum
Shares issued upon conversion (in shares) | shares	47.6420
Common Stock
Stock repurchase program, authorized amount (up to)					$ 200,000,000
Stock repurchased during period, shares (in shares) | shares		0	0	1,552,500
Stock repurchased during period, value				$ 40,000,000
Stock repurchase program, remaining authorized repurchase amount		$ 160,000,000

Business Segment Information -

Business Segment Information - Schedule of Business Segment Information (Details) $ in Millions	3 Months Ended								12 Months Ended
	Mar. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Sep. 30, 2017USD ($)	Jun. 30, 2017USD ($)	Mar. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Sep. 30, 2016USD ($)	Jun. 30, 2016USD ($)	Mar. 31, 2018USD ($)segment	Mar. 31, 2017USD ($)	Mar. 31, 2016USD ($)
Segment Reporting Information [Line Items]
Number of segments | segment									2
Segment Reporting Information, Additional Information [Abstract]
Net sales by product	$ 575.2	$ 492.3	$ 510.8	$ 487.7	$ 503.6	$ 451.8	$ 491	$ 471.8	$ 2,066	$ 1,918.2	$ 1,923.8
Income (loss) from operations									147.1	183.7	174.3
Non-operating expense:
Interest expense, net									(75.6)	(88.7)	(91.4)
Loss on the extinguishment of debt									(11.9)	(7.8)	0
Other (expense) income, net									(3.1)	(5.2)	3.1
Income from continuing operations before income taxes									56.5	82	86
(Benefit) provision for income taxes									(19.5)	7.9	17.1
Net income from continuing operations									76	74.1	68.9
Loss from discontinued operations, net of tax									0	0	(1.4)
Net income (loss)									76	74.1	67.5
Non-controlling interest income (loss)									0.1	0	(0.4)
Net income (loss) attributable to Rexnord	(62)	81.6	29.8	26.5	27.4	3.2	24.6	18.9	75.9	74.1	67.9
Dividends on preferred stock	(5.8)	(5.8)	(5.8)	(5.8)	(5.8)	(1.5)	0	0	(23.2)	(7.3)	0
Net income (loss) attributable to Rexnord common stockholders	(67.8)	$ 75.8	$ 24	$ 20.7	21.6	$ 1.7	$ 24.6	$ 18.9	52.7	66.8	67.9
Depreciation and Amortization									89.7	105.4	115.4
Capital Expenditures									40.7	54.5	52.1
Total Assets	3,423.7				3,539.3				3,423.7	3,539.3	3,354.8
Segments, Geographical Areas [Abstract]
Net Sales									2,066	1,918.2	1,923.8
Long-lived Assets	456.4				400.9				456.4	400.9	397.2
United States
Segments, Geographical Areas [Abstract]
Net Sales									1,392.8	1,320.3	1,306.9
Long-lived Assets	264.7				267.2				264.7	267.2	276
Europe
Segments, Geographical Areas [Abstract]
Net Sales									381.6	332.6	370.8
Long-lived Assets	127.9				72.2				127.9	72.2	80.5
Rest of World
Segments, Geographical Areas [Abstract]
Net Sales									291.6	265.3	246.1
Long-lived Assets	63.8				61.5				63.8	61.5	40.7
Operating Segments | Process & Motion Control
Segment Reporting Information, Additional Information [Abstract]
Net sales by product									1,241.2	1,134.7	1,100.3
Income (loss) from operations									193.8	134.9	146.8
Non-operating expense:
Depreciation and Amortization									56	69.9	77.3
Capital Expenditures									34.2	42	43.6
Total Assets	2,598.8				2,671.4				2,598.8	2,671.4	2,412.7
Operating Segments | Water Management
Segment Reporting Information, Additional Information [Abstract]
Net sales by product									824.8	783.5	823.5
Income (loss) from operations									(3)	85.1	72.8
Non-operating expense:
Depreciation and Amortization									33.7	35.5	38.1
Capital Expenditures									6.5	12.5	8.5
Total Assets	820.9				862.3				820.9	862.3	933.2
Corporate
Segment Reporting Information, Additional Information [Abstract]
Income (loss) from operations									(43.7)	(36.3)	(45.3)
Non-operating expense:
Total Assets	$ 4				$ 5.6				4	5.6	8.9
Original equipment manufacturers/ end-users | Operating Segments | Process & Motion Control
Segment Reporting Information, Additional Information [Abstract]
Net sales by product									690.5	594.6	572.3
Maintenance, repair, and operations | Operating Segments | Process & Motion Control
Segment Reporting Information, Additional Information [Abstract]
Net sales by product									550.7	540.1	528
Water safety, quality, flow control and conservation | Operating Segments | Water Management
Segment Reporting Information, Additional Information [Abstract]
Net sales by product									566.9	538.9	534.1
Water infrastructure | Operating Segments | Water Management
Segment Reporting Information, Additional Information [Abstract]
Net sales by product									$ 257.9	$ 244.6	$ 289.4

Quarterly Results of Operati105

Quarterly Results of Operations (unaudited) - Schedule of Quarterly Results of Operations (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 575.2	$ 492.3	$ 510.8	$ 487.7	$ 503.6	$ 451.8	$ 491	$ 471.8	$ 2,066	$ 1,918.2	$ 1,923.8
Gross profit	209.7	182.9	188.3	176	175.6	153	174	165.4	756.9	668	665.2
Net income (loss) attributable to Rexnord	(62)	81.6	29.8	26.5	27.4	3.2	24.6	18.9	75.9	74.1	67.9
Dividends on preferred stock	(5.8)	(5.8)	(5.8)	(5.8)	(5.8)	(1.5)	0	0	(23.2)	(7.3)	0
Net income (loss) attributable to Rexnord common stockholders	$ (67.8)	$ 75.8	$ 24	$ 20.7	$ 21.6	$ 1.7	$ 24.6	$ 18.9	$ 52.7	$ 66.8	$ 67.9
Net income (loss) per share attributable to Rexnord common stockholders
Basic (in dollars per share)	$ (0.65)	$ 0.73	$ 0.23	$ 0.20	$ 0.21	$ 0.02	$ 0.24	$ 0.19	$ 0.51	$ 0.65	$ 0.67
Diluted (in dollars per share)	$ (0.65)	$ 0.67	$ 0.23	$ 0.20	$ 0.21	$ 0.02	$ 0.24	$ 0.18	$ 0.50	$ 0.64	$ 0.66

Guarantor Subsidiaries - Conden

Guarantor Subsidiaries - Condensed Consolidating Balance Sheets (Details) - USD ($) $ in Millions	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2015
Current assets:
Cash and cash equivalents	$ 217.6	$ 490.1	$ 484.6	$ 370.3
Receivables, net	373.2	322.9
Inventories, net	344.8	314.9
Income tax receivable	19.1	10.9
Other current assets	43	39.3
Total current assets	997.7	1,178.1
Property, plant and equipment, net	456.4	400.9
Intangible assets, net	577.5	558.6
Goodwill	1,276.1	1,318.2	1,193.8
Investment in:
Other assets	116	83.5
Total assets	3,423.7	3,539.3	3,354.8
Current liabilities:
Current portion of long-term debt	3.9	16.5
Trade payables	226	197.8
Compensation and benefits	70	54.3
Current portion of pension and postretirement benefit obligations	4.5	4.3
Other current liabilities	149.8	127.4
Total current liabilities	454.2	400.3
Long-term debt	1,352.1	1,606.2
Note (receivable from) payable to affiliates, net	0	0
Pension and postretirement benefit obligations	169.2	174.4
Deferred income taxes	156.6	208.8
Other liabilities	78.8	79
Total liabilities	2,210.9	2,468.7
Total stockholders' equity	1,212.8	1,070.6	588	552.7
Total liabilities and stockholders' equity	3,423.7	3,539.3
Eliminations
Current assets:
Cash and cash equivalents	0	0	0	0
Receivables, net	0	0
Inventories, net	0	0
Income tax receivable	0	0
Other current assets	0	0
Total current assets	0	0
Property, plant and equipment, net	0	0
Intangible assets, net	0	0
Goodwill	0	0
Investment in:
Total assets	(4,833.1)	(4,457.5)
Current liabilities:
Current portion of long-term debt	0	0
Trade payables	0	0
Compensation and benefits	0	0
Current portion of pension and postretirement benefit obligations	0	0
Other current liabilities	0	0
Total current liabilities	0	0
Long-term debt	0	0
Note (receivable from) payable to affiliates, net	0	0
Pension and postretirement benefit obligations	0	0
Deferred income taxes	0	0
Other liabilities	0	0
Total liabilities	0	0
Total stockholders' equity	(4,833.1)	(4,457.5)
Total liabilities and stockholders' equity	(4,833.1)	(4,457.5)
Eliminations, Issuer Subsidiaries
Investment in:
Subsidiaries	(1,177.5)	(1,020.1)
Eliminations, Guarantor Subsidiaries
Investment in:
Subsidiaries	(3,053.3)	(2,835.2)
Eliminations, Non-Guarantor Subsidiaries
Investment in:
Subsidiaries	(602.3)	(602.2)
Parent
Current assets:
Cash and cash equivalents	0	4.9	6.1	8.3
Receivables, net	0	0
Inventories, net	0	0
Income tax receivable	7.4	4.4
Other current assets	0	0
Total current assets	7.4	9.3
Property, plant and equipment, net	0	0
Intangible assets, net	0	0
Goodwill	0	0
Investment in:
Subsidiaries	1,177.5	1,020.1
Other assets	40.6	22.6
Total assets	1,225.5	1,052
Current liabilities:
Current portion of long-term debt	0	0
Trade payables	0	0
Compensation and benefits	0	0
Current portion of pension and postretirement benefit obligations	0	0
Other current liabilities	3	0
Total current liabilities	3	0
Long-term debt	0	0
Note (receivable from) payable to affiliates, net	9.4	(18.7)
Pension and postretirement benefit obligations	0	0
Deferred income taxes	0	0
Other liabilities	0.3	0.1
Total liabilities	12.7	(18.6)
Total stockholders' equity	1,212.8	1,070.6
Total liabilities and stockholders' equity	1,225.5	1,052
Issuers
Current assets:
Cash and cash equivalents	0	0.1	2	0.5
Receivables, net	0	0
Inventories, net		0
Income tax receivable	0	0
Other current assets	0	0
Total current assets	0	0.1
Property, plant and equipment, net	0	0
Intangible assets, net	0	0
Goodwill	0	0
Investment in:
Subsidiaries	3,053.3	2,835.2
Other assets	1.3	1.8
Total assets	3,054.6	2,837.1
Current liabilities:
Current portion of long-term debt	0	16.1
Trade payables	0	0
Compensation and benefits	0	0
Current portion of pension and postretirement benefit obligations	0	0
Other current liabilities	9.4	5.7
Total current liabilities	9.4	21.8
Long-term debt	1,285.8	1,568.4
Note (receivable from) payable to affiliates, net	581.2	215.5
Pension and postretirement benefit obligations	0	0
Deferred income taxes	0.7	1
Other liabilities	0	10.3
Total liabilities	1,877.1	1,817
Total stockholders' equity	1,177.5	1,020.1
Total liabilities and stockholders' equity	3,054.6	2,837.1
Guarantor Subsidiaries
Current assets:
Cash and cash equivalents	40.9	253.3	290.1	217.8
Receivables, net	206.5	191.3
Inventories, net	201.1	223.8
Income tax receivable	5.7	1.1
Other current assets	12.2	9.9
Total current assets	466.4	679.4
Property, plant and equipment, net	253.9	255.3
Intangible assets, net	443.1	441.9
Goodwill	1,010.6	996.8
Investment in:
Subsidiaries	602.3	602.2
Other assets	34.1	46.8
Total assets	2,810.4	3,022.4
Current liabilities:
Current portion of long-term debt	0.1	0.4
Trade payables	130.4	120.3
Compensation and benefits	42	32.4
Current portion of pension and postretirement benefit obligations	2.4	2.4
Other current liabilities	77.9	76.4
Total current liabilities	252.8	231.9
Long-term debt	55.8	37.7
Note (receivable from) payable to affiliates, net	(845.5)	(442.2)
Pension and postretirement benefit obligations	114.7	124.6
Deferred income taxes	117.1	175.7
Other liabilities	62.2	59.5
Total liabilities	(242.9)	187.2
Total stockholders' equity	3,053.3	2,835.2
Total liabilities and stockholders' equity	2,810.4	3,022.4
Non-Guarantor Subsidiaries
Current assets:
Cash and cash equivalents	176.7	231.8	$ 186.4	$ 143.7
Receivables, net	166.7	131.6
Inventories, net	143.7	91.1
Income tax receivable	6	5.4
Other current assets	30.8	29.4
Total current assets	523.9	489.3
Property, plant and equipment, net	202.5	145.6
Intangible assets, net	134.4	116.7
Goodwill	265.5	321.4
Investment in:
Other assets	40	12.3
Total assets	1,166.3	1,085.3
Current liabilities:
Current portion of long-term debt	3.8	0
Trade payables	95.6	77.5
Compensation and benefits	28	21.9
Current portion of pension and postretirement benefit obligations	2.1	1.9
Other current liabilities	59.5	45.3
Total current liabilities	189	146.6
Long-term debt	10.5	0.1
Note (receivable from) payable to affiliates, net	254.9	245.4
Pension and postretirement benefit obligations	54.5	49.8
Deferred income taxes	38.8	32.1
Other liabilities	16.3	9.1
Total liabilities	564	483.1
Total stockholders' equity	602.3	602.2
Total liabilities and stockholders' equity	$ 1,166.3	$ 1,085.3

Guarantor Subsidiaries - Con107

Guarantor Subsidiaries - Condensed Consolidating Statement of Operations (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Condensed Income Statements, Captions [Line Items]
Net sales	$ 575.2	$ 492.3	$ 510.8	$ 487.7	$ 503.6	$ 451.8	$ 491	$ 471.8	$ 2,066	$ 1,918.2	$ 1,923.8
Cost of sales									1,309.1	1,250.2	1,258.6
Gross profit	209.7	182.9	188.3	176	175.6	153	174	165.4	756.9	668	665.2
Selling, general and administrative expenses									449.5	413.2	385.7
Restructuring and other similar charges									18.8	31.6	34.9
Actuarial gain on pension and postretirement benefit obligations									(3.3)	(2.6)	12.9
Amortization of intangible assets									33.6	42.1	57.4
Goodwill impairment									111.2	0	0
Income (loss) from operations									147.1	183.7	174.3
Interest income (expense), net:
To third parties									(75.6)	(88.7)	(91.4)
To affiliates									0	0	0
Loss on the extinguishment of debt									(11.9)	(7.8)	0
Other (expense) income, net									(3.1)	(5.2)	3.1
Income (loss) before income taxes from operations									56.5	82	86
Provision for income taxes									(19.5)	7.9	17.1
Income (loss) before equity in income of subsidiaries									76	74.1	68.9
Equity in earnings (loss) of subsidiaries									0	0	0
Net income from continuing operations									76	74.1	68.9
Loss from discontinued operations									0	0	(1.4)
Net income (loss)									76	74.1	67.5
Non-controlling interest income									0.1	0	(0.4)
Net income (loss) attributable to Rexnord	(62)	81.6	29.8	26.5	27.4	3.2	24.6	18.9	75.9	74.1	67.9
Dividends on preferred stock	(5.8)	(5.8)	(5.8)	(5.8)	(5.8)	(1.5)	0	0	(23.2)	(7.3)	0
Net income (loss) attributable to Rexnord common stockholders	$ (67.8)	$ 75.8	$ 24	$ 20.7	$ 21.6	$ 1.7	$ 24.6	$ 18.9	52.7	66.8	67.9
Comprehensive income (loss)									138.9	76.1	58.7
Eliminations
Condensed Income Statements, Captions [Line Items]
Net sales									(172.7)	(115)	(106)
Cost of sales									(172.7)	(115)	(106)
Gross profit									0	0	0
Selling, general and administrative expenses										0	0
Restructuring and other similar charges										0	0
Actuarial gain on pension and postretirement benefit obligations										0	0
Amortization of intangible assets										0	0
Goodwill impairment									0
Income (loss) from operations									0	0	0
Interest income (expense), net:
To third parties									0	0	0
To affiliates									0	0	0
Loss on the extinguishment of debt									0	0	0
Other (expense) income, net									0	0	0
Income (loss) before income taxes from operations									0	0	0
Provision for income taxes									0	0	0
Income (loss) before equity in income of subsidiaries									0	0	0
Equity in earnings (loss) of subsidiaries									(140.4)	(181.2)	(188.5)
Net income from continuing operations										(181.2)	(188.5)
Loss from discontinued operations										0	0
Net income (loss)									(140.4)	(181.2)	(188.5)
Non-controlling interest income									0	0	0
Net income (loss) attributable to Rexnord									(140.4)	(181.2)	(188.5)
Dividends on preferred stock									0	0	0
Net income (loss) attributable to Rexnord common stockholders									(140.4)	(181.2)	(188.5)
Comprehensive income (loss)									(140.4)	(181.2)	(188.5)
Parent
Condensed Income Statements, Captions [Line Items]
Net sales									0	0	0
Cost of sales									0	0	0
Gross profit									0	0	0
Selling, general and administrative expenses									0	0	0
Restructuring and other similar charges									0		0
Actuarial gain on pension and postretirement benefit obligations									0	0	0
Amortization of intangible assets									0	0	0
Goodwill impairment									0
Income (loss) from operations									0	0	0
Interest income (expense), net:
To third parties									0	0	0
To affiliates									3.1	1.1	0
Loss on the extinguishment of debt									0	0	0
Other (expense) income, net									0	0	0
Income (loss) before income taxes from operations									3.1	1.1	0
Provision for income taxes									0	0	0
Income (loss) before equity in income of subsidiaries									3.1	1.1	0
Equity in earnings (loss) of subsidiaries									72.9	73	67.5
Net income from continuing operations										74.1	67.5
Loss from discontinued operations										0	0
Net income (loss)									76	74.1	67.5
Non-controlling interest income									0	0	0
Net income (loss) attributable to Rexnord									76	74.1	67.5
Dividends on preferred stock									(23.2)	(7.3)	0
Net income (loss) attributable to Rexnord common stockholders									52.8	66.8	67.5
Comprehensive income (loss)									76	74.1	67.5
Issuers
Condensed Income Statements, Captions [Line Items]
Net sales									0	0	0
Cost of sales									0	0	0
Gross profit									0	0	0
Selling, general and administrative expenses									0	0	0
Restructuring and other similar charges									0	0	0
Actuarial gain on pension and postretirement benefit obligations									0	0	0
Amortization of intangible assets									0	0	0
Goodwill impairment									0
Income (loss) from operations									0	0	0
Interest income (expense), net:
To third parties									(75.3)	(88.1)	(90.4)
To affiliates									27.4	74.3	66.1
Loss on the extinguishment of debt									(11.9)	(7.8)	0
Other (expense) income, net									(0.2)	(0.3)	0
Income (loss) before income taxes from operations									(60)	(21.9)	(24.3)
Provision for income taxes									(4.3)	0.1	0
Income (loss) before equity in income of subsidiaries									(55.7)	(22)	(24.3)
Equity in earnings (loss) of subsidiaries									128.6	95	91.8
Net income from continuing operations										73	67.5
Loss from discontinued operations										0	0
Net income (loss)									72.9	73	67.5
Non-controlling interest income									0	0	0
Net income (loss) attributable to Rexnord									72.9	73	67.5
Dividends on preferred stock									0	0	0
Net income (loss) attributable to Rexnord common stockholders									72.9	73	67.5
Comprehensive income (loss)									88.9	77.5	66.6
Guarantor Subsidiaries
Condensed Income Statements, Captions [Line Items]
Net sales									1,488.6	1,407.2	1,398.3
Cost of sales									936.5	918.5	927.1
Gross profit									552.1	488.7	471.2
Selling, general and administrative expenses									314.8	294.5	272.2
Restructuring and other similar charges									13.5	28	24.6
Actuarial gain on pension and postretirement benefit obligations									(1.8)	(1.3)	13.1
Amortization of intangible assets									27	35.5	50.5
Goodwill impairment									24
Income (loss) from operations									174.6	132	110.8
Interest income (expense), net:
To third parties									(0.4)	(0.5)	(0.5)
To affiliates									(13.2)	(53.4)	(49.5)
Loss on the extinguishment of debt									0	0	0
Other (expense) income, net									(9.1)	(2.1)	3.7
Income (loss) before income taxes from operations									151.9	76	64.5
Provision for income taxes									(37.8)	(5.8)	0.7
Income (loss) before equity in income of subsidiaries									189.7	81.8	63.8
Equity in earnings (loss) of subsidiaries									(61.1)	13.2	29.2
Net income from continuing operations										95	93
Loss from discontinued operations										0	(1.2)
Net income (loss)									128.6	95	91.8
Non-controlling interest income									0.1	0	0
Net income (loss) attributable to Rexnord									128.5	95	91.8
Dividends on preferred stock									0	0	0
Net income (loss) attributable to Rexnord common stockholders									128.5	95	91.8
Comprehensive income (loss)									131.4	86	89.9
Non-Guarantor Subsidiaries
Condensed Income Statements, Captions [Line Items]
Net sales									750.1	626	631.5
Cost of sales									545.3	446.7	437.5
Gross profit									204.8	179.3	194
Selling, general and administrative expenses									134.7	118.7	113.5
Restructuring and other similar charges									5.3	3.6	10.3
Actuarial gain on pension and postretirement benefit obligations									(1.5)	(1.3)	(0.2)
Amortization of intangible assets									6.6	6.6	6.9
Goodwill impairment									87.2
Income (loss) from operations									(27.5)	51.7	63.5
Interest income (expense), net:
To third parties									0.1	(0.1)	(0.5)
To affiliates									(17.3)	(22)	(16.6)
Loss on the extinguishment of debt									0	0	0
Other (expense) income, net									6.2	(2.8)	(0.6)
Income (loss) before income taxes from operations									(38.5)	26.8	45.8
Provision for income taxes									22.6	13.6	16.4
Income (loss) before equity in income of subsidiaries									(61.1)	13.2	29.4
Equity in earnings (loss) of subsidiaries									0	0	0
Net income from continuing operations										13.2	29.4
Loss from discontinued operations										0	(0.2)
Net income (loss)									(61.1)	13.2	29.2
Non-controlling interest income									0	0	(0.4)
Net income (loss) attributable to Rexnord									(61.1)	13.2	29.6
Dividends on preferred stock									0	0	0
Net income (loss) attributable to Rexnord common stockholders									(61.1)	13.2	29.6
Comprehensive income (loss)									$ (17)	$ 19.7	$ 23.6

Guarantor Subsidiaries - Con108

Guarantor Subsidiaries - Condensed Consolidating Statement of Cash Flows (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Operating activities
Cash provided by (used for) operating activities	$ 228.5	$ 195.1	$ 219
Investing activities
Expenditures for property, plant and equipment	(40.7)	(54.5)	(52.1)
Acquisitions, net of cash	(173.6)	(213.7)
Acquisitions, cash acquired			1.1
Proceeds from dispositions of property, plant and equipment	5.5	4.2	5.8
Cash used for investing activities	(208.8)	(264)	(45.2)
Financing activities
Proceeds from borrowings of long-term debt	1,529.8	1,590.3	0.9
Repayments of long-term debt	(1,791.9)	(1,885.8)	(19.5)
Proceeds from borrowings of short-term debt	0	16.1	0
Repayments of short-term debt	(24.3)	(19.5)	(5.9)
Payment of debt issuance costs	(11)	(11.8)	(0.9)
Deferred acquisition payment	0	(5.7)	0
Proceeds from issuance of preferred stock, net of direct offering costs	0	389.7	0
Proceeds from exercise of stock options	6	11	5.1
Repurchase of common stock	0	0	(40)
Proceeds from financing lease obligation	5.8	0	0
Payments of dividend on preferred stock	(23.2)	(4.4)	0
Excess tax benefit on exercise of stock options	0	0	4
Cash (used for) provided by financing activities	(308.8)	79.9	(56.3)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	16.6	(5.5)	(3.2)
(Decrease) increase in cash, cash equivalents and restricted cash	(272.5)	5.5	114.3
Cash, cash equivalents and restricted cash at beginning of period	490.1	484.6	370.3
Cash, cash equivalents and restricted cash at end of period	217.6	490.1	484.6
Eliminations
Operating activities
Cash provided by (used for) operating activities	0	0	0
Investing activities
Expenditures for property, plant and equipment	0	0	0
Acquisitions, net of cash	0	0
Acquisitions, cash acquired			0
Proceeds from dispositions of property, plant and equipment	0	0	0
Cash used for investing activities	0	0	0
Financing activities
Proceeds from borrowings of long-term debt	0	0	0
Repayments of long-term debt	0	0	0
Proceeds from borrowings of short-term debt		0
Repayments of short-term debt	0	0	0
Payment of debt issuance costs	0	0	0
Deferred acquisition payment		0
Proceeds from issuance of preferred stock, net of direct offering costs		0
Proceeds from exercise of stock options	0	0	0
Repurchase of common stock			0
Proceeds from financing lease obligation	0
Payments of dividend on preferred stock	0	0
Excess tax benefit on exercise of stock options			0
Cash (used for) provided by financing activities	0	0	0
Effect of exchange rate changes on cash, cash equivalents and restricted cash	0	0	0
(Decrease) increase in cash, cash equivalents and restricted cash	0	0	0
Cash, cash equivalents and restricted cash at beginning of period	0	0	0
Cash, cash equivalents and restricted cash at end of period	0	0	0
Parent
Operating activities
Cash provided by (used for) operating activities	12.3	(397.5)	32.7
Investing activities
Expenditures for property, plant and equipment	0	0	0
Acquisitions, net of cash	0	0
Acquisitions, cash acquired			0
Proceeds from dispositions of property, plant and equipment	0	0	0
Cash used for investing activities	0	0	0
Financing activities
Proceeds from borrowings of long-term debt	0	0	0
Repayments of long-term debt	0	0	0
Proceeds from borrowings of short-term debt		0
Repayments of short-term debt	0	0	0
Payment of debt issuance costs	0	0	0
Deferred acquisition payment		0
Proceeds from issuance of preferred stock, net of direct offering costs		389.7
Proceeds from exercise of stock options	6	11	5.1
Repurchase of common stock			(40)
Proceeds from financing lease obligation	0
Payments of dividend on preferred stock	(23.2)	(4.4)
Excess tax benefit on exercise of stock options			0
Cash (used for) provided by financing activities	(17.2)	396.3	(34.9)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	0	0	0
(Decrease) increase in cash, cash equivalents and restricted cash	(4.9)	(1.2)	(2.2)
Cash, cash equivalents and restricted cash at beginning of period	4.9	6.1	8.3
Cash, cash equivalents and restricted cash at end of period	0	4.9	6.1
Issuers
Operating activities
Cash provided by (used for) operating activities	313.4	308.8	26.9
Investing activities
Expenditures for property, plant and equipment	0	0	0
Acquisitions, net of cash	0	0
Acquisitions, cash acquired			0
Proceeds from dispositions of property, plant and equipment	0	0	0
Cash used for investing activities	0	0	0
Financing activities
Proceeds from borrowings of long-term debt	1,324	1,590.3	0.9
Repayments of long-term debt	(1,602.2)	(1,885.8)	(19.5)
Proceeds from borrowings of short-term debt		16.1
Repayments of short-term debt	(24.3)	(19.5)	(5.9)
Payment of debt issuance costs	(11)	(11.8)	(0.9)
Deferred acquisition payment		0
Proceeds from issuance of preferred stock, net of direct offering costs		0
Proceeds from exercise of stock options	0	0	0
Repurchase of common stock			0
Proceeds from financing lease obligation	0
Payments of dividend on preferred stock	0	0
Excess tax benefit on exercise of stock options			0
Cash (used for) provided by financing activities	(313.5)	(310.7)	(25.4)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	0	0	0
(Decrease) increase in cash, cash equivalents and restricted cash	(0.1)	(1.9)	1.5
Cash, cash equivalents and restricted cash at beginning of period	0.1	2	0.5
Cash, cash equivalents and restricted cash at end of period	0	0.1	2
Guarantor Subsidiaries
Operating activities
Cash provided by (used for) operating activities	(161.2)	215.7	101.9
Investing activities
Expenditures for property, plant and equipment	(28.4)	(43.3)	(39.4)
Acquisitions, net of cash	(50)	(213.4)
Acquisitions, cash acquired			0
Proceeds from dispositions of property, plant and equipment	5.3	4.2	5.8
Cash used for investing activities	(73.1)	(252.5)	(33.6)
Financing activities
Proceeds from borrowings of long-term debt	205.8	0	0
Repayments of long-term debt	(189.7)	0	0
Proceeds from borrowings of short-term debt		0
Repayments of short-term debt	0	0	0
Payment of debt issuance costs	0	0	0
Deferred acquisition payment		0
Proceeds from issuance of preferred stock, net of direct offering costs		0
Proceeds from exercise of stock options	0	0	0
Repurchase of common stock			0
Proceeds from financing lease obligation	5.8
Payments of dividend on preferred stock	0	0
Excess tax benefit on exercise of stock options			4
Cash (used for) provided by financing activities	21.9	0	4
Effect of exchange rate changes on cash, cash equivalents and restricted cash	0	0	0
(Decrease) increase in cash, cash equivalents and restricted cash	(212.4)	(36.8)	72.3
Cash, cash equivalents and restricted cash at beginning of period	253.3	290.1	217.8
Cash, cash equivalents and restricted cash at end of period	40.9	253.3	290.1
Non-Guarantor Subsidiaries
Operating activities
Cash provided by (used for) operating activities	64	68.1	57.5
Investing activities
Expenditures for property, plant and equipment	(12.3)	(11.2)	(12.7)
Acquisitions, net of cash	(123.6)	(0.3)
Acquisitions, cash acquired			1.1
Proceeds from dispositions of property, plant and equipment	0.2	0	0
Cash used for investing activities	(135.7)	(11.5)	(11.6)
Financing activities
Proceeds from borrowings of long-term debt	0	0	0
Repayments of long-term debt	0	0	0
Proceeds from borrowings of short-term debt		0
Repayments of short-term debt	0	0	0
Payment of debt issuance costs	0	0	0
Deferred acquisition payment		(5.7)
Proceeds from issuance of preferred stock, net of direct offering costs		0
Proceeds from exercise of stock options	0	0	0
Repurchase of common stock			0
Proceeds from financing lease obligation	0
Payments of dividend on preferred stock	0	0
Excess tax benefit on exercise of stock options			0
Cash (used for) provided by financing activities	0	(5.7)	0
Effect of exchange rate changes on cash, cash equivalents and restricted cash	16.6	(5.5)	(3.2)
(Decrease) increase in cash, cash equivalents and restricted cash	(55.1)	45.4	42.7
Cash, cash equivalents and restricted cash at beginning of period	231.8	186.4	143.7
Cash, cash equivalents and restricted cash at end of period	$ 176.7	$ 231.8	$ 186.4

Schedule II - Valuation and 109

Schedule II - Valuation and Qualifying Accounts - Schedule II (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Valuation allowance for trade and notes receivable
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	$ 10.6	$ 8.9	$ 16.8
Charged to Costs and Expenses	4.7	0.7	(6.8)
Acquired Obligations	0.6	2	0
Charged to Other Accounts	0.2	0	(0.1)
Deductions	(3.4)	(1)	(1)
Balance at End of Year	12.7	10.6	8.9
Valuation allowance for income taxes
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	27.7	27.2	25
Charged to Costs and Expenses	9.8	4	4.2
Acquired Obligations	0	0.2	0
Charged to Other Accounts	7.9	0	0
Deductions	(5)	(3.7)	(2)
Balance at End of Year	$ 40.4	$ 27.7	$ 27.2