Modine Manufacturing (MOD) 10-K 30 May 14 2014 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
In Millions, except Share data, unless otherwise specified	Mar. 31, 2014	22-May-14	Sep. 30, 2013
Document and Entity Information [Abstract]	'	'	'
Entity Registrant Name	'MODINE MANUFACTURING CO	'	'
Entity Central Index Key	'0000067347	'	'
Current Fiscal Year End Date	'--03-31	'	'
Entity Well-known Seasoned Issuer	'No	'	'
Entity Voluntary Filers	'No	'	'
Entity Current Reporting Status	'Yes	'	'
Entity Filer Category	'Accelerated Filer	'	'
Entity Public Float	'	'	$675
Entity Common Stock, Shares Outstanding	'	47,661,058	'
Document Fiscal Year Focus	'2014	'	'
Document Fiscal Period Focus	'FY	'	'
Document Type	'10-K	'	'
Amendment Flag	'false	'	'
Document Period End Date	31-Mar-14	'	'

CONSOLIDATED_STATEMENTS_OF_OPE

CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)	12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
CONSOLIDATED STATEMENTS OF OPERATIONS [Abstract]	'	'	'
Net sales	$1,477.60	$1,376	$1,577.20
Cost of sales	1,239.40	1,167.40	1,320.60
Gross profit	238.2	208.6	256.6
Selling, general and administrative expenses	181.7	166.3	186.6
Restructuring expenses	16.1	17	0
Impairment charges	3.2	25.9	2.5
Operating income (loss)	37.2	-0.6	67.5
Interest expense	-12.4	-12.6	-12.5
Other (expense) income - net	-0.8	0.2	-7.1
Earnings (loss) from continuing operations before income taxes	24	-13	47.9
Benefit (provision) for income taxes	107.9	-9.8	-9.9
Earnings (loss) from continuing operations	131.9	-22.8	38
Earnings from discontinued operations, net of income taxes	0	0	0.8
Net earnings (loss)	131.9	-22.8	38.8
Net earnings attributable to noncontrolling interest	-1.5	-1.4	-0.3
Net earnings (loss) attributable to Modine	$130.40	($24.20)	$38.50
Earnings (loss) per share from continuing operations attributable to Modine shareholders:	'	'	'
Basic (in dollars per share)	$2.75	($0.52)	$0.81
Diluted (in dollars per share)	$2.72	($0.52)	$0.80
Net earnings (loss) per share attributable to Modine shareholders:	'	'	'
Basic (in dollars per share)	$2.75	($0.52)	$0.83
Diluted (in dollars per share)	$2.72	($0.52)	$0.82
Weighted average shares outstanding:	'	'	'
Basic (in shares)	46.9	46.6	46.5
Diluted (in shares)	47.6	46.6	46.9

CONSOLIDATED_STATEMENTS_OF_COM

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME [Abstract]	'	'	'
Net earnings (loss)	$131.90	($22.80)	$38.80
Other comprehensive income (loss):	'	'	'
Foreign currency translation	9.7	-17.1	-22.6
Defined benefit plans, net of income taxes of $9.8, $0 and $0 million	13.9	-23.6	-41.4
Cash flow hedges, net of income taxes of $0.6, $0 and $0.1 million	1.1	2.6	-3.4
Total other comprehensive income (loss)	24.7	-38.1	-67.4
Comprehensive income (loss)	156.6	-60.9	-28.6
Comprehensive income attributable to noncontrolling interest	-1.7	-1.4	-0.3
Comprehensive income (loss) attributable to Modine	$154.90	($62.30)	($28.90)

CONSOLIDATED_STATEMENTS_OF_COM1

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Other comprehensive income (loss):	'	'	'
Defined benefit plans, tax	$9.80	$0	$0
Cash flow hedges, tax	$0.60	$0	$0.10

CONSOLIDATED_BALANCE_SHEETS

CONSOLIDATED BALANCE SHEETS (USD $)	Mar. 31, 2014	Mar. 31, 2013
In Millions, unless otherwise specified
ASSETS	'	'
Cash and cash equivalents	$87.20	$23.80
Trade accounts receivable - net	221.1	194.5
Inventories	116.8	118.8
Deferred income taxes	13	6.6
Other current assets	60.7	55.3
Total current assets	498.8	399
Property, plant and equipment - net	359.6	355.9
Intangible assets - net	12.4	8.3
Goodwill	28.7	28.7
Deferred income taxes	98.6	0.4
Other noncurrent assets	34.2	26.5
Total assets	1,032.30	818.8
LIABILITIES AND SHAREHOLDERS' EQUITY	'	'
Short-term debt	32.4	30.6
Long-term debt - current portion	0.8	0.5
Accounts payable	171.1	150.7
Accrued compensation and employee benefits	70.8	51.2
Other current liabilities	82.1	47.1
Total current liabilities	357.2	280.1
Long-term debt	131.2	132.5
Deferred income taxes	7.3	8.6
Pensions	81	108
Postretirement benefits	5.4	6.7
Other noncurrent liabilities	21.6	14.6
Total liabilities	603.7	550.5
Commitments and contingencies (see Note 19)	'	'
Shareholders' equity:	'	'
Preferred stock, $0.025 par value, authorized 16.0 million shares, issued - none	0	0
Common stock, $0.625 par value, authorized 80.0 million shares, issued 48.3 million and 47.8 million shares	30.2	29.9
Additional paid-in capital	175.7	171.2
Retained earnings	338	207.6
Accumulated other comprehensive loss	-103.9	-128.4
Treasury stock, at cost, 0.7 million and 0.6 million shares	-15.2	-14.6
Total Modine shareholders' equity	424.8	265.7
Noncontrolling interest	3.8	2.6
Total equity	428.6	268.3
Total liabilities and equity	$1,032.30	$818.80

CONSOLIDATED_BALANCE_SHEETS_Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Mar. 31, 2014	Mar. 31, 2013
In Millions, except Per Share data, unless otherwise specified
Shareholders' equity:	'	'
Preferred stock, par value (in dollars per share)	$0.03	$0.03
Preferred stock, shares authorized (in shares)	16	16
Preferred stock, shares issued (in shares)	0	0
Common stock, par value (in dollars per shares)	$0.63	$0.63
Common stock, shares authorized (in shares)	80	80
Common stock, shares issued (in shares)	48.3	47.8
Treasury stock at cost (in shares)	0.7	0.6

CONSOLIDATED_STATEMENTS_OF_CAS

CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Cash flows from operating activities:	'	'	'
Net earnings (loss)	$131.90	($22.80)	$38.80
Adjustments to reconcile net earnings (loss) with net cash provided by operating activities:	'	'	'
Depreciation and amortization	58.1	55.8	57.7
Insurance proceeds from Airedale fire	16.9	0	0
Pension and postretirement expense	3.2	1.9	5
Impairment charges	3.2	25.9	2.5
Loss from disposition of property, plant and equipment	2.6	2.5	0.6
Deferred income taxes	-116.1	0.6	1.9
Stock-based compensation expense	3.6	3.1	1.6
Other - net	-0.5	4.1	2.7
Changes in operating assets and liabilities, excluding acquisitions:	'	'	'
Trade accounts receivable	-18.2	15.1	-7.5
Inventories	-0.1	-0.8	-3.1
Other current assets	-1.9	-6.8	-10.5
Accounts payable	15.2	-3.2	-14.6
Accrued compensation and employee benefits	17.5	1.9	-10.5
Income taxes	-0.2	-1.3	0.5
Other current liabilities	-3.2	-16.7	-6.5
Other noncurrent assets and liabilities	-7.5	-10.5	-12.8
Net cash provided by operating activities	104.5	48.8	45.8
Cash flows from investing activities:	'	'	'
Expenditures for property, plant and equipment	-53.1	-49.8	-64.4
Insurance proceeds from Airedale fire	20.7	0	0
Costs to replace building and equipment damaged in Airedale fire	-4.2	0	0
Acquisitions - net of cash acquired	-7.8	-4.9	0
Proceeds from dispositions of assets	2.9	0.4	1.3
Other - net	0	-1.6	-1.9
Net cash used for investing activities	-41.5	-55.9	-65
Cash flows from financing activities:	'	'	'
Borrowings of debt	152.6	166.7	134.4
Repayments of debt	-152.4	-167.1	-116.2
Financing fees paid	-0.9	0	-0.4
Dividend paid to noncontrolling interest	-0.5	0	0
Other - net	-0.3	0.7	1
Net cash (used for) provided by financing activities	-1.5	0.3	18.8
Effect of exchange rate changes on cash	1.9	-0.8	-1.1
Net increase (decrease) in cash and cash equivalents	63.4	-7.6	-1.5
Cash and cash equivalents at beginning of year	23.8	31.4	32.9
Cash and cash equivalents at end of year	$87.20	$23.80	$31.40

CONSOLIDATED_STATEMENTS_OF_SHA

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY	Common stock [Member]	Additional paid-in capital [Member]	Retained earnings [Member]	Accumulated other comprehensive loss [Member]	Treasury stock, at cost [Member]	Non-controlling interest [Member]	Total	Total
In Millions, unless otherwise specified	USD ($)	USD ($)	USD ($)	USD ($)	USD ($)	USD ($)	USD ($)	KRW
Balance at Mar. 31, 2011	$29.40	$166.40	$193.30	($22.90)	($14)	$0	$352.20	'
Balance (in shares) at Mar. 31, 2011	47.1	'	'	'	'	'	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'	'	'
Net earnings (loss) attributable to Modine	0	0	38.5	0	0	0	38.5	'
Other comprehensive (loss) income	0	0	0	-67.4	0	0	-67.4	'
Stock options and awards including related tax benefits	0.2	0.3	0	0	0	0	0.5	'
Stock options and awards including related tax benefits (in shares)	0.3	'	'	'	'	'	'	'
Purchase of treasury stock	0	0	0	0	-0.5	0	-0.5	'
Stock-based compensation expense	0	1.6	0	0	0	0	1.6	'
Contribution by noncontrolling interest	0	0	0	0	0	0.9	0.9	1,000
Net earnings attributable to noncontrolling interest	0	0	0	0	0	0.3	0.3	'
Balance at Mar. 31, 2012	29.6	168.3	231.8	-90.3	-14.5	1.2	326.1	'
Balance (in shares) at Mar. 31, 2012	47.4	'	'	'	'	'	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'	'	'
Net earnings (loss) attributable to Modine	0	0	-24.2	0	0	0	-24.2	'
Other comprehensive (loss) income	0	0	0	-38.1	0	0	-38.1	'
Stock options and awards including related tax benefits	0.3	-0.2	0	0	0	0	0.1	'
Stock options and awards including related tax benefits (in shares)	0.4	'	'	'	'	'	'	'
Purchase of treasury stock	0	0	0	0	-0.1	0	-0.1	'
Stock-based compensation expense	0	3.1	0	0	0	0	3.1	'
Net earnings attributable to noncontrolling interest	0	0	0	0	0	1.4	1.4	'
Balance at Mar. 31, 2013	29.9	171.2	207.6	-128.4	-14.6	2.6	268.3	'
Balance (in shares) at Mar. 31, 2013	47.8	'	'	'	'	'	47.8	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'	'	'
Net earnings (loss) attributable to Modine	0	0	130.4	0	0	0	130.4	'
Other comprehensive (loss) income	0	0	0	24.5	0	0.2	24.7	'
Stock options and awards including related tax benefits	0.3	0.9	0	0	0	0	1.2	'
Stock options and awards including related tax benefits (in shares)	0.5	'	'	'	'	'	'	'
Purchase of treasury stock	0	0	0	0	-0.6	0	-0.6	'
Stock-based compensation expense	0	3.6	0	0	0	0	3.6	'
Dividend paid to noncontrolling interest	0	0	0	0	0	-0.5	-0.5	'
Net earnings attributable to noncontrolling interest	0	0	0	0	0	1.5	1.5	'
Balance at Mar. 31, 2014	$30.20	$175.70	$338	($103.90)	($15.20)	$3.80	$428.60	'
Balance (in shares) at Mar. 31, 2014	48.3	'	'	'	'	'	48.3	'

Significant_Accounting_Policie

Significant Accounting Policies	12 Months Ended
	Mar. 31, 2014
Significant Accounting Policies [Abstract]	'
Significant Accounting Policies	'
	Note 1:  Significant Accounting Policies
	Nature of operations:  Modine Manufacturing Company (“Modine” or “the Company”) specializes in thermal management systems and components, bringing heating and cooling technology and solutions to diversified global markets.  The Company is a leading global developer, manufacturer and marketer of heat exchangers and systems for use in on-highway and off-highway original equipment manufacturer (“OEM”) vehicular applications, and a wide array of building, industrial and refrigeration markets.  Product lines include radiators and radiator cores, condensers, oil coolers, charge air coolers, heat-transfer modules and assemblies, exhaust gas recirculation (“EGR”) coolers, building heating, and ventilating and air conditioning (“HVAC”) equipment.
	Basis of presentation:  We prepare the consolidated financial statements in conformity with generally accepted accounting principles (“GAAP”) in the United States.  These principles require management to make certain estimates and assumptions in determining assets, liabilities, revenue, expenses and related disclosures.  Actual amounts could differ from those estimates.
	Consolidation principles:  The consolidated financial statements include the accounts of Modine Manufacturing Company and its majority-owned or Modine-controlled subsidiaries.  We eliminate intercompany transactions and balances in consolidation.
	During fiscal 2012, the Company completed the formation of a joint venture with OneGene, Inc. to form Modine OneGene Corporation in South Korea.  The Company and OneGene, Inc. each made initial capital contributions of 1,000 million Korean won ($0.9 million) during fiscal 2012.  Modine is considered the primary beneficiary of the joint venture in accordance with applicable consolidation guidance.  Accordingly, we consolidate the results of Modine OneGene Corporation within the Asia segment.
	We account for investments in non-consolidated affiliated companies in which our ownership is 20 percent or more under the equity method.  We state these investments at cost plus or minus a proportionate share of undistributed net income (loss).  We include Modine’s share of the affiliates’ net income (loss) in other income and expense.  See Note 12 for further discussion.
	Discontinued operations: Discontinued operations primarily consist of environmental remediation activities at a former manufacturing facility in the Netherlands.  See Note 19 for further discussion.
	Assets held for sale:  The Company considers assets to be held for sale when management approves and commits to a formal plan to actively market the assets for sale at a price reasonable in relation to its fair value, the asset is available for immediate sale in its present condition, an active program to locate a buyer and other actions required to complete the sale have been initiated, the sale of the asset is probable and expected to be completed within one year and it is unlikely that significant changes will be made to the plan.  Upon designation as held for sale, we record the carrying value of the assets at the lower of its carrying value or its estimated fair value, less cost to sell.  The Company ceases to record depreciation expense at the time of designation as held for sale.
	Revenue recognition:  We recognize sales revenue, including agreed upon commodity price increases or decreases, when it is both earned and realized or realizable.  It is our policy to recognize revenue when title to the product and risk of loss have transferred to the customer, persuasive evidence of an arrangement exists, and collection of the sales proceeds is reasonably assured, all of which generally occur upon shipment of goods to customers.  We make appropriate provisions for uncollectible accounts based on historical data or specific customer economic data.  We record sales discounts, which are offered for prompt payment by certain customers, as a reduction to net sales.
	Tooling costs:  Modine accounts for production tooling costs as a component of property, plant and equipment when the Company owns title to the tooling and amortizes the capitalized cost to cost of sales over the estimated life of the asset, which is generally three years.  At March 31, 2014 and 2013, Company-owned tooling totaled $28.6 million and $30.5 million, respectively.  In certain instances, the Company makes upfront payments for customer-owned tooling costs, and subsequently receives reimbursement from customers for the upfront payments.  The Company accounts for unbilled customer-owned tooling costs as a receivable within other current assets when the customer has guaranteed reimbursement to the Company.  No significant arrangements exist where customer-owned tooling costs were not accompanied by guaranteed reimbursement.  At March 31, 2014 and 2013, cost reimbursement receivables related to customer-owned tooling totaled $10.3 million and $20.9 million, respectively.
	Warranty:  Modine provides product warranties for specific product lines and accrues for estimated future warranty costs in the period in which the sale is recorded.  We record warranty expense based upon historical and current claims data or based on estimated future claims.  Accrual balances, which are recorded within other current liabilities, are monitored and adjusted if it is probable that expected claims will differ from previous estimates.  See Note 15 for further discussion.
	Shipping and handling costs:  We record shipping and handling costs incurred upon the shipment of products to our OEM customers in cost of sales, and related amounts billed to these customers in net sales.  We record shipping and handling costs incurred upon the shipment of products to our HVAC customers in selling, general and administrative (“SG&A”) expenses.  For the years ended March 31, 2014, 2013, and 2012, these shipping and handling costs recorded in SG&A expenses were $4.0 million, $4.3 million, and $5.4 million, respectively.
	Research and development:  We expense research and development costs as incurred within SG&A expenses.  For the years ended March 31, 2014, 2013, and 2012, research and development costs charged to operations totaled $61.7 million, $68.4 million, and $70.2 million, respectively.
	Translation of foreign currencies:  We translate assets and liabilities of foreign subsidiaries and equity investments into U.S. dollars at the period-end exchange rates, and we translate income and expense items at the monthly average exchange rate for the period in which the transactions occur.  We report resulting translation adjustments within accumulated other comprehensive income (loss) within shareholders' equity.  We include foreign currency transaction gains or losses in the statement of operations within other income and expense.
	Derivative instruments:  The Company enters into derivative financial instruments from time to time to manage certain financial risks.  The Company enters into futures contracts to reduce exposure to changing future purchase prices for aluminum and copper.  These instruments are used to protect cash flows and are not speculative.  See Note 18 for further discussion.
	Income taxes:  We determine deferred tax assets and liabilities based on the difference between the amounts reported in the financial statements and the tax basis of assets and liabilities, using enacted tax rates in effect in the years in which the differences are expected to reverse.  We establish a valuation allowance if it is more likely than not that some portion or all of a deferred tax asset will not be realized.  See Note 8 for further discussion.
	Earnings per share:  We calculate basic earnings per share based on the weighted average number of common shares outstanding during the period, while the calculation of diluted earnings per share includes the dilutive effect of potential common shares outstanding during the period.  The calculation of diluted earnings per share excludes all potential common shares if their inclusion would have an anti-dilutive effect.  Recipients of the Company’s restricted stock awards have non-forfeitable rights to receive any dividends declared by the Company.  Therefore, these restricted stock awards are included in computing earnings per share pursuant to the two-class method.  See Note 9 for further discussion.
	Cash and cash equivalents: Modine considers all highly liquid investments with original maturities of three months or less to be cash equivalent.  Under Modine’s cash management system, cash balances at certain banks are funded when checks are presented for payment.  To the extent that checks issued, but not yet presented for payment, exceed the balance on hand at the specific bank against which they were written, the amount of those un-presented checks is included in accounts payable.
	Deferred compensation trust:  The Company maintains a deferred compensation trust to fund future obligations under its non-qualified deferred compensation plan.  The trust’s investments in third-party debt and equity securities are reflected as long-term investments in the consolidated balance sheet.
	Trade accounts receivable and allowance for doubtful accounts:  We record trade receivables at the invoiced amount.  Trade receivables do not bear interest if paid according to the original terms.  The allowance for doubtful accounts, $1.1 million and $0.8 million at March 31, 2014 and 2013, respectively, represents estimated uncollectible receivables.  The allowance is based upon historical write-off experience and specific customer economic data.  We review the allowance for doubtful accounts periodically and adjust as necessary.
	We enter into supply chain financing programs from time to time to sell accounts receivable without recourse to third-party financial institutions.  Sales of accounts receivable are reflected as a reduction of accounts receivable on the consolidated balance sheets and the proceeds are included in cash flows from operating activities in the consolidated statements of cash flows.  During the years ended March 31, 2014, 2013, and 2012, the Company sold, without recourse, $82.4 million, $99.1 million, and $113.5 million of accounts receivable to accelerate cash receipts.  During the years ended March 31, 2014, 2013, and 2012, we recorded a loss on the sale of accounts receivables of $0.3 million, $0.3 million, and $0.5 million in the consolidated statements of operations.
	Inventories: We value inventories at the lower of cost, on a first-in, first-out basis or weighted average basis, or market value.
	Property, plant and equipment:  We state property, plant and equipment at cost.  For financial reporting purposes, we compute depreciation principally using the straight-line method over the expected useful life of the asset.  We charge maintenance and repair costs to operations as incurred.  We capitalize costs of improvements.  Upon the sale or other disposition of an asset, we remove the cost and related accumulated depreciation from the accounts and include the gain or loss in the statement of operations.
	Goodwill:  We do not amortize goodwill; rather we test for impairment annually unless conditions exist that would require a more frequent evaluation.  We perform an assessment of the fair value of the Company’s reporting units for our goodwill impairment testing based upon, among other things, the present value of expected future cash flows.  We recognize an impairment loss if the book value of goodwill exceeds the fair value.  We performed our goodwill impairment test as of March 31, 2014, which did not result in an impairment charge.  See Note 14 for further discussion.
	Impairment of long-lived assets:  We review long-lived assets, including property, plant and equipment and intangible assets for impairment and write them down to fair value when facts and circumstances indicate that the carrying value of the assets may not be recoverable through estimated future undiscounted cash flows.  If an impairment has occurred, we write-down the asset to its estimated fair value and recognize the impairment loss as a charge against current operations.  We estimate fair value using a variety of valuation techniques, including discounted cash flows, market values and comparison values for similar assets.  We review investments for impairment and write them down to fair value when facts and circumstances indicate that a decline in value is other than temporary.  See Note 6 for further discussion.
	Environmental expenditures:  We capitalize environmental expenditures that qualify as property, plant and equipment or substantially increase the economic value or extend the useful life of an asset.  We expense all other expenditures as incurred.  We expense environmental expenditures that relate to an existing condition caused by past operations.  If a loss arising from environmental matters is probable and can be reasonably estimated, we record an accrual for the amount of the estimated loss.  See Note 19 for further discussion.
	Self-insurance reserves:  We retain some of the financial risk for various insurance coverage, including property, general liability, workers compensation, and employee healthcare, and therefore maintain reserves that estimate the impact of unreported and under-reported claims that fall below various stop-loss limits and deductibles under its insurance policies.  We maintain reserves for the estimated settlement cost of known claims, as well as estimates of incurred but not reported claims.  We charge costs of claims, including the impact of changes in reserves due to claim experience and severity, to operations based on claim incurrence.  We review and update the evaluation of insurance claims and the reasonableness of the related liability accruals on a quarterly basis.
	Stock-based compensation:  The Company recognizes stock-based compensation using the fair-value method.  Accordingly, compensation cost for stock options, stock awards and restricted stock is calculated based upon the fair value of the instrument at the time of grant, and is recognized as expense over the vesting period of the stock-based instrument.  See Note 5 for further discussion.
	Out of period adjustments: During the second quarter of fiscal 2014, the Company recorded a customer pricing adjustment that related to prior fiscal years.  The impact of this error to the second quarter of fiscal 2014 decreased pre-tax earnings by $0.6 million ($0.5 million after-tax).  During the first quarter of fiscal 2013, the Company identified an error related to certain commodity hedges that should have been deemed ineffective in the fourth quarter of fiscal 2012, which overstated pre-tax earnings by $0.5 million in the first quarter of fiscal 2013.  The Company does not believe that the impact of these errors is material to its financial statements for fiscal 2014, 2013, or 2012.
	New accounting pronouncements:  In February 2013, the Financial Accounting Standards Board (“FASB”) issued an accounting standards update that requires entities to present reclassifications by component when reporting changes in accumulated other comprehensive income.  In addition, the Company is required to present, either on the face of the statement where net income is presented or in the notes, certain significant amounts reclassified out of accumulated other comprehensive income within the respective line items of the consolidated statement of operations.  The Company adopted this guidance in the first quarter of fiscal 2014.  See Note 20 for additional information.
	Supplemental cash flow information:
		Years ended March 31,
		2014		2013		2012
	Interest paid	$	12.6	$	11.6	$	12.8
	Income taxes paid		11.4		12.4		13

Airedale_Facility_Fire

Airedale Facility Fire	12 Months Ended
	Mar. 31, 2014
Airedale Facility Fire [Abstract]	'
Airedale Facility Fire	'
	Note 2: Airedale Facility Fire
	On September 6, 2013, a fire caused significant destruction to the Company’s Airedale manufacturing facility and offices in Rawdon (Leeds), United Kingdom.  We report Airedale’s financial results within the Commercial Products segment. There were no injuries caused by the fire.  The Rawdon facility, which was leased, was used to manufacture cooling products and solutions for a variety of applications, including data centers, clean rooms, retail, leisure and process cooling. The fire caused the Company to temporarily suspend manufacturing and certain administrative operations at the Rawdon site; however, the Company has transferred its operations to temporary facilities and is planning to rebuild the leased facility.  Demolition of the remaining structure at the Rawdon site is in process and construction of the new facility is expected to begin during the second quarter of fiscal 2015.
	The Company maintains insurance coverage for damage to the leased facility, equipment, inventory, other assets, business interruption and lost profits, and recovery-related expenses caused by the fire.  The Company believes that reimbursement from its insurance provider is probable for substantially all losses and costs directly attributable to the fire.  During fiscal 2014, the Company recorded expenses of $1.0 million, primarily related to the write-off of certain assets (leasehold improvements) that were not covered by insurance. Since the date of the fire, the Company has received cash advances of $37.6 million from its insurance provider for covered losses, written-off inventory of $4.7 million and equipment with a net book value of $1.4 million, and incurred costs directly attributable to the fire totaling $11.9 million.  We recorded these losses and costs, which totaled $18.0 million, in the same statement of operations line as the related insurance recovery.  The cash advances of $37.6 million have been classified within the consolidated statement of cash flows according to the nature of the underlying losses and costs being reimbursed.
	The terms of the Rawdon lease agreement obligate the Company to rebuild the damaged facility.  Through March 31, 2014, the Company paid reconstruction costs of $1.0 million, which we recorded within property, plant and equipment, primarily related to architectural plans and fees.  The Company estimates the total cost of reconstruction to be approximately $45.0 million.  Costs incurred related to the reconstruction are recorded on the Company’s consolidated balance sheet as an asset, and a liability for the same amount is also recorded.  As of March 31, 2014, the liability to rebuild the facility was $45.0 million ($37.0 million within other current liabilities and $8.0 million within other noncurrent liabilities) and the receivable from the Company’s insurance provider was $25.4 million ($18.4 million within other current assets and $7.0 million within other noncurrent assets).  The $25.4 million receivable is comprised of $45.0 million of estimated rebuild costs and $18.0 million of losses and costs incurred, partially offset by $37.6 million of insurance advances.
	The Company expects to record insurance reimbursements related to lost profits (business interruption) during the recovery period in the quarter during which the reimbursements are realized.  No reimbursements related to lost profits were recorded during fiscal 2014.  The Company expects to realize insurance reimbursements for lost profits related to fiscal 2014 in the first or second quarter of fiscal 2015.

Acquisitions

Acquisitions	12 Months Ended
	Mar. 31, 2014
Acquisitions [Abstract]	'
Acquisitions	'
	Note 3:  Acquisitions
	On February 28, 2014, the Company acquired 100 percent of the shares of Barkell Limited of Consett, United Kingdom for cash consideration of $7.8 million, net of cash acquired.  This acquisition provides Modine with an expanded product offering into the air handling market within the Commercial Products segment.  We recorded assets acquired and liabilities assumed at their respective fair values.  The preliminary purchase price allocation resulted in intangible assets for acquired technology and customer relationships totaling $4.7 million; property, plant and equipment of $2.0 million; and working capital net assets of $1.1 million.  Acquired technology consists of a fully developed product line and technical processes, and the customer relationships represent established sales channel and customer relationships.  We are amortizing these acquired intangible assets over ten years.
	On July 25, 2012, the Company completed the acquisition of Geofinity Manufacturing of Surrey, British Columbia for cash consideration of $4.9 million, net of cash acquired.  This acquisition, which is included in the Commercial Products segment, provides Modine with a product line of innovative geothermal heat pumps in both water-to-water and water-to-air models.  We recorded assets acquired and liabilities assumed at their respective fair values.  The purchase price allocation resulted in acquired technology of $3.5 million; working capital net assets of $0.6 million; and goodwill of $0.8 million.  Acquired technology consists of a fully developed air handling product line, which we are amortizing over ten years.
	The results of operations of these acquired businesses are included in our consolidated statements of operations since the dates of acquisition. We did not present pro forma financial information as the effects of these acquisitions are not material to our results of operations or financial position.
	During fiscal 2007, the Company acquired the remaining 50 percent of Radiadores Visconde Ltda.  The purchase agreement included a $2.0 million note, which was payable subject to the resolution of certain obligations of the sellers.  During the second quarter of fiscal 2013, the Company and the sellers reached a final resolution under which the Company is not obligated to pay the note to the sellers.  As a result, the Company recorded a $2.0 million reduction to selling, general and administrative expenses in the South America segment during the second quarter of fiscal 2013.

Fair_Value_Measurements

Fair Value Measurements	12 Months Ended
	Mar. 31, 2014
Fair Value Measurements [Abstract]	'
Fair Value Measurements	'
	Note 4:  Fair Value Measurements
	Fair value is defined as the price that would be received for an asset or paid to transfer a liability in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants.  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 in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations in which all significant inputs are observable in active markets.
		·	Level 3 – Model-derived valuations in which one or more significant inputs are not observable.
	When available, the Company uses quoted market prices to determine fair value and classifies such measurements within Level 1.  In some cases, where market prices are not available, the Company uses 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 valuation models that use, where possible, market-based data such as interest rates, yield curves or currency rates.  These measurements are classified within Level 3.
	Trading securities:  Trading securities held by the Company, which are included within other noncurrent assets, are investments maintained in a deferred compensation trust to fund obligations under Modine’s non-qualified deferred compensation plan.  The securities’ fair values are determined based on quoted prices from active markets and are classified within Level 1 of the valuation hierarchy.
	Derivative financial instruments: As part of the Company’s risk management strategy, Modine enters into derivative transactions to mitigate certain identified exposures.  The derivative instruments include foreign currency exchange contracts and commodity derivatives.  These instruments are not exchange traded and are customized over-the-counter derivative transactions.  These derivative instruments are with counterparties that have long-term credit ratings of BBB– or better. The Company measures fair value assuming that the unit of account is an individual derivative transaction and those derivatives are sold or transferred on a stand-alone basis.  The Company estimates the fair value of these derivative instruments based on dealer quotes.  These derivative instruments are classified within Level 2 of the valuation hierarchy.
	Deferred compensation obligations:  The fair values of the Company’s deferred compensation obligations are recorded at the fair value of the investments held by the deferred compensation trust.  As described above, the fair values of the related trading securities are determined based on quoted prices from active markets and are classified within Level 1 of the valuation hierarchy.
	The carrying values of cash and cash equivalents, trade accounts receivable, and accounts payable approximate fair value due to the short-term nature of these instruments. We disclose the fair value of the Company’s debt in Note 16.
	At March 31, 2014, assets and liabilities recorded at fair value on a recurring basis were as follows:
			Level 1		Level 2		Level 3		Total
	Assets:
	Trading securities		$	2.6	$	-	$	-	$	2.6
	Total assets		$	2.6	$	-	$	-	$	2.6
	Liabilities:
	Derivative financial instruments		$	-	$	0.4	$	-	$	0.4
	Deferred compensation obligations			2.6		-		-		2.6
	Total liabilities		$	2.6	$	0.4	$	-	$	3
	At March 31, 2013, assets and liabilities recorded at fair value on a recurring basis were as follows:
			Level 1		Level 2		Level 3		Total
	Assets:
	Trading securities		$	2.3	$	-	$	-	$	2.3
	Total assets		$	2.3	$	-	$	-	$	2.3
	Liabilities:
	Derivative financial instruments		$	-	$	1.4	$	-	$	1.4
	Deferred compensation obligations			2.3		-		-		2.3
	Total liabilities		$	2.3	$	1.4	$	-	$	3.7
	At March 31, 2014, the U.S. pension plan assets were classified as follows:
			Level 1		Level 2		Level 3		Total
	Money market investments		$	-	$	11.3	$	-	$	11.3
	Common stocks			40.1		2.1		-		42.2
	Corporate bonds			-		21.3		-		21.3
	Pooled equity funds			68.9		11.9		-		80.8
	Pooled fixed income funds			14.1		-		-		14.1
	U.S. government and agency securities			-		37		-		37
	Other			1.6		5.4		-		7
	Total		$	124.7	$	89	$	-	$	213.7
	At March 31, 2013, the U.S. pension plan assets were classified as follows:
			Level 1		Level 2		Level 3		Total
	Money market investments		$	-	$	7.3	$	-	$	7.3
	Common stocks			35.9		0.1		-		36
	Corporate bonds			-		19.1		-		19.1
	Pooled equity funds			68.8		14.1		-		82.9
	Pooled fixed income funds			17.6		-		-		17.6
	U.S. government and agency securities			-		32.1		-		32.1
	Other			1		4.6		-		5.6
	Total		$	123.3	$	77.3	$	-	$	200.6
	We have determined the fair value of money market investments to approximate their net asset values, with no discounts for credit quality or liquidity restrictions, and they are classified within Level 2 of the valuation hierarchy.  We determined the fair value of common stocks, pooled equity funds and pooled fixed-income funds based on quoted prices from active markets and classify them within Level 1 of the valuation hierarchy.  We determined the fair value of certain common stocks, corporate bonds, pooled equity funds and U.S. government and agency securities based upon recent bid prices or the average of recent bid and asking prices when available and, if not available, we valued them through matrix pricing models developed by sources considered by management to be reliable.  We classify these assets within Level 2 of the valuation hierarchy.
	Assets held for sale:  We have valued assets held for sale based on Level 3 market-based valuation inputs.  The carrying value of assets held for sale totaled $11.6 million and $11.4 million at March 31, 2014 and March 31, 2013, respectively.  See Note 6 for further discussion.

StockBased_Compensation

Stock-Based Compensation	12 Months Ended
	Mar. 31, 2014
Stock-Based Compensation [Abstract]	'
Stock-Based Compensation	'
	Note 5:  Stock-Based Compensation
	The Company’s stock-based incentive programs consist of the following: (1) a long-term incentive compensation program for officers and key executives that consists of stock option and restricted stock components granted for retention and performance, (2) a discretionary equity program for management and other key employees, and (3) stock options and/or stock awards for non-employee directors.  The Company’s Board of Director’s and the Officer Nomination and Compensation Committee, as applicable, have discretionary authority to set the terms of the awards of stock under the Company’s 2008 Incentive Compensation Plan.  Employee participants have the opportunity to deliver back to the Company the number of shares from the vesting of stock awards sufficient to satisfy the individual’s minimum tax withholding obligations.  These shares are held as treasury shares.  Stock-based compensation expense totaled $3.6 million, $3.1 million, and $1.6 million in fiscal 2014, 2013, and 2012, respectively.
	Stock Options:  Compensation expense recorded in fiscal 2014, 2013, and 2012 related to stock options was $0.8 million, $1.1 million, and $1.3 million, respectively.  The fair value of stock options that vested during fiscal 2014 was $0.8 million.  As of March 31, 2014, the total compensation expense not yet recognized related to non-vested stock options was $1.3 million and the weighted average period in which the remaining expense is expected to be recognized is 2.6 years.
	We estimate the fair value of option awards on the date of grant using the Black-Scholes option valuation model with the following assumptions for stock options granted in fiscal 2014, 2013, and 2012:
		2014			2013			2012
	Weighted average fair value of options	$	7.76		$	4.26		$	10.45
	Expected life of awards in years		6.3			6.3			6.3
	Risk-free interest rate		1.3	%		0.9	%		1.9	%
	Expected volatility of the Company's stock		88.7	%		87.4	%		79.6	%
	Expected dividend yield on the Company's stock		0	%		0	%		0	%
	Stock options expire no later than 10 years after the grant date and have an exercise price equal to the fair market value of the common stock on the date of the grant.  The risk-free interest rate was based on yields of U.S. zero-coupon issues with a term equal to the expected life of the option for the week the options were granted.  The expected volatility assumption was based on changes in the Company’s historical common stock prices over the same time frame as the expected life of the awards.  The expected dividend yield is zero as the Company currently does not anticipate paying dividends over the expected life of the options.  The expected lives of the awards are based on historical patterns and the terms of the options.  Outstanding options granted during fiscal 2014 vest 25 percent annually for the next four years.  All outstanding options granted prior to fiscal 2014 vest 25 percent on the grant date and 25 percent annually thereafter for the subsequent three years.  We used a pre-vesting forfeiture rate of 2.5 percent for these periods as an estimate of expected forfeitures prior to completing the required service period.
	A summary of stock option activity for fiscal 2014 was as follows:
		Shares			Weighted average			Weighted average			Aggregate
					exercise price			remaining contractual			intrinsic value
								term (years)
	Outstanding, April 1, 2013		1.7		$	14.03
	Granted		0.2			10.4
	Exercised		(0.2	)		6.71
	Forfeited or expired		(0.1	)		25.37
	Outstanding, March 31, 2014		1.6		$	13.15			5.5		$	7.4
	Exercisable, March 31, 2014		1.3		$	14.15			4.7		$	5.6
	The aggregate intrinsic value represents the difference between the closing price of Modine common shares on the last trading day of fiscal 2014 over the exercise price of the stock options, multiplied by the number of options outstanding or exercisable.  The aggregate intrinsic value is not recorded for financial statement purposes, and this value will change based upon daily changes in the fair value of Modine’s common shares.
	Additional information related to stock options exercised during fiscal 2014, 2013, and 2012 is as follows:
		2014			2013			2012
	Intrinsic value of stock options exercised	$	1.1		$	0.1		$	0.2
	Proceeds from stock options exercised	$	1.1		$	0.1		$	0.5
	Restricted Stock:  A summary of restricted stock activity for fiscal 2014 is as follows:
		Shares			Weighted
					average
					price
	Non-vested balance, April 1, 2013		0.5		$	6.91
	Granted		0.3			10.95
	Vested		(0.2	)		8.67
	Non-vested balance, March 31, 2014		0.6		$	8.66
	Compensation expense related to restricted stock, using straight-line amortization, in fiscal 2014, 2013, and 2012 was $2.2 million, $1.8 million, and $1.1 million, respectively.  At March 31, 2014, Modine had approximately $3.9 million of total unrecognized compensation cost related to non-vested restricted stock, which we expect to recognize over a weighted average period of 2.7 years.
	Restricted Stock – Performance-Based Shares:  Shares are earned under the performance portion of the restricted stock award program based upon the attainment of corporate financial goals over a three-year period and are awarded at the end of that three-year performance period if the performance targets have been achieved.  A new performance period may begin each fiscal year so multiple performance periods, with separate goals, may operate simultaneously.
	The performance component of the long-term incentive compensation program initiated in fiscal 2014 for the performance period from fiscal 2014 through fiscal 2016 was based upon a target three-year average consolidated return on average capital employed (“ROACE”), three-year average annual revenue growth, and Asia operating income at the end of the three-year performance period.  For the program initiated in fiscal 2013, the performance award was based upon a target three-year average consolidated ROACE, cumulative revenue over the three-year performance period and Europe ROACE at the end of the three-year performance period.  For the program initiated in fiscal 2012, the performance award was based upon a target three-year average consolidated ROACE and a target improvement in economic profit at the end of the three-year performance period.
	During fiscal 2014, 2013 and 2012, Modine recorded compensation expense of $0.6 million, $0.2 million and ($0.8) million, respectively, related to performance awards.  At March 31, 2014, Modine had approximately $1.7 million of total unrecognized compensation cost related to unvested performance-based restricted stock, which is expected to be recognized over a weighted average period of 2.0 years.
	At present, we accomplish the fulfillment of equity-based grants through the issuance of new common shares.  Under the Company’s 2008 Incentive Compensation Plan, 1.8 million shares are available for the granting of additional options and awards as of March 31, 2014.

Restructuring_and_Impairment_C

Restructuring and Impairment Charges	12 Months Ended
	Mar. 31, 2014
Restructuring and Impairment Charges [Abstract]	'
Restructuring and Impairment Charges	'
	Note 6:  Restructuring and Impairment Charges
	During fiscal 2013, the Company announced its intention to restructure its Europe segment.  The Company’s restructuring actions and plans have included exiting certain non-core product lines based upon our global product strategy, reducing manufacturing costs, implementing headcount reductions, and disposing of and selling certain underperforming or non-strategic assets. The restructuring activities are designed to align the cost structure of the segment with the segment’s strategic focus on the commercial vehicle, off-highway, and engine product markets, while improving gross margin and return on average capital employed.
	Since commencement of the Europe segment restructuring program, the Company has recorded $26.1 million of asset impairment charges, $28.6 million of employee severance costs, primarily related to headcount reductions at two manufacturing facilities and the segment headquarters, and $7.6 million of repositioning expenses, primarily related to accelerated depreciation of production equipment that is no longer used because of manufacturing process changes and equipment transfer costs.
	Restructuring and repositioning expenses related to the Europe segment restructuring program were as follows:
		Years ended March 31,
		2014			2013
	Employee severance and related benefits	$	13.7		$	14.9
	Accelerated depreciation		4.3			-
	Other repositioning costs		1.2			2.1
	Total restructuring and repositioning expenses	$	19.2		$	17
	During fiscal 2014, we recorded total restructuring and repositioning expenses in the consolidated statement of operations as follows: $14.9 million as restructuring expenses and $4.3 million within cost of sales.  During fiscal 2013, we recorded all restructuring and repositioning costs in the consolidated statement of operations as restructuring expenses.
	The Company accrues severance in accordance with its written plans, procedures, and relevant statutory requirements. Changes in accrued severance related to the Europe segment restructuring program were as follows:
		Years ended March 31,
		2014			2013
	Beginning balance	$	11.6		$	-
	Additions		13.7			14.9
	Payments		(7.8	)		(3.3	)
	Effect of exchange rate changes		0.8			-
	Ending balance	$	18.3		$	11.6
	During fiscal 2014, the Company recorded asset impairment charges of $2.0 million related to the Europe restructuring program, primarily due to a manufacturing facility in Germany that the Company plans to close.  During fiscal 2013, the Company recorded asset impairment charges of $24.1 million to reduce the carrying values of certain facilities held for sale in the Europe segment to their estimated fair values, less costs to sell.  During fiscal 2012, the Company recorded asset impairment charges of $2.5 million within the Europe segment.
	During the fourth quarter of fiscal 2014, the Company approved a plan to close its McHenry, Illinois manufacturing facility.  The Company plans to transfer its current production to other existing North America segment manufacturing facilities over an 18-month period.  This measure reflects the Company’s focus on operating scale manufacturing facilities to improve overall competitiveness and profitability.  As a result of the planned closure, the Company recorded $1.2 million of restructuring expenses, primarily related to severance costs, and $1.2 million of asset impairment charges.  During fiscal 2013, the Company recorded asset impairment charges of $1.8 million to reduce the carrying values of certain facilities held for sale in the North America segment to their estimated fair values, less costs to sell.
	At March 31, 2014 and 2013, assets held for sale of $11.6 million and $11.4 million, respectively, were included in other noncurrent assets.  These consist of facilities that the Company is marketing for sale.  Upon designation as held for sale, we measured the carrying value of the asset at the lower of its carrying value or its estimated fair value, less cost to sell.

Other_Income_and_Expense

Other Income and Expense	12 Months Ended
	Mar. 31, 2014
Other Income and Expense [Abstract]	'
Other Income and Expense	'
	Note 7:  Other Income and Expense
	Other income and expense consisted of the following:
		Years ended March 31,
		2014			2013			2012
	Equity in earnings (loss) of non-consolidated affiliate	$	0.7		$	0.3		$	(0.1	)
	Interest income		0.5			0.9			0.8
	Foreign currency transactions		(2.0	)		(1.1	)		(7.8	)
	Other non-operating income - net		-			0.1			-
	Total other (expense) income - net	$	(0.8	)	$	0.2		$	(7.1	)
	Foreign currency transactions primarily consist of foreign currency transaction gains and losses on the re-measurement or settlement of foreign currency denominated assets and liabilities, including intercompany loans and transactions denominated in a foreign currency, along with unrealized gains and losses on foreign currency exchange contracts.

Income_Taxes

Income Taxes	12 Months Ended
	Mar. 31, 2014
Income Taxes [Abstract]	'
Income Taxes	'
	Note 8:  Income Taxes
	The U.S. and foreign components of earnings (loss) from continuing operations before income taxes and the (benefit) provision for income taxes consisted of the following:
			Years ended March 31,
			2014			2013			2012
	Components of earnings (loss) from continuing operations before income taxes:
	United States		$	14.1		$	10.2		$	17.2
	Foreign			9.9			(23.2	)		30.7
	Total earnings (loss) from continuing operations before income taxes		$	24		$	(13.0	)	$	47.9
	Income tax (benefit) expense:
	Federal:
	Current		$	(2.0	)	$	2.6		$	-
	Deferred			(95.8	)		(2.6	)		0.3
	State:
	Current			0.2			0.2			0.3
	Deferred			(21.4	)		(0.2	)		(0.2	)
	Foreign:
	Current			10			6.4			8.3
	Deferred			1.1			3.4			1.2
	Total income tax (benefit) expense		$	(107.9	)	$	9.8		$	9.9
	The Company allocates income tax expense between continuing operations, discontinued operations, and other comprehensive income.  We apply accounting for income taxes by tax jurisdiction, and in periods in which there is loss from continuing operations before income taxes and pre-tax income in other categories (e.g., discontinued operations or other comprehensive income), we first allocate income tax expense to the other sources of income, and record a related tax benefit in continuing operations.
	Income tax expense attributable to earnings (loss) from continuing operations before income taxes differed from the amounts computed by applying the statutory U.S. federal income tax rate as a result of the following:
			Years ended March 31,
			2014			2013			2012
	Statutory federal tax			35	%		35	%		35	%
	State taxes, net of federal benefit			2.1			(1.3	)		(0.1	)
	Taxes on non-U.S. earnings and losses			(3.8	)		(23.8	)		(5.7	)
	Valuation allowance			(471.7	)		(59.3	)		2.1
	Tax credits			(7.1	)		37			(19.2	)
	Compensation			0.4			(13.0	)		3.4
	Foreign tax rate or law changes			(9.2	)		0.9			0.6
	Uncertain tax positions net of settlements			0.4			(41.9	)		1.9
	Brazilian interest on equity			(1.7	)		3.2			(1.0	)
	Dividend repatriation			5.8			(11.4	)		4.4
	Other			0.2			(0.8	)		(0.7	)
	Effective tax rate			(449.6	%)		(75.4	%)		20.7	%
	Since the third quarter of fiscal 2008, the Company maintained a full valuation allowance against net deferred tax assets in the U.S. since it was more likely than not that the net deferred tax assets would not be realized. The determination of recording and releasing valuation allowances against deferred tax assets is made, in part, pursuant to the Company's assessment of whether it is more likely than not that it will generate sufficient future taxable income against which benefits of the deferred tax assets may or may not be realized.  Significant judgment is required when making estimates of the Company’s ability to generate income in future periods.  During fiscal 2014, the Company recorded a $6.2 million reduction to the valuation allowance in the U.S. based upon fiscal 2014 activity.  Additionally, as of March 31, 2014, the Company concluded it no longer needed a valuation allowance on certain U.S. deferred tax assets, primarily due to the sustained history of U.S. earnings, the favorable impact previous restructuring actions have had on U.S. operating results, current market conditions and trends, and expected future taxable income.  As a result, the Company recorded a $119.2 million reversal of its deferred tax asset valuation allowance after determining it was more likely than not that certain U.S. deferred tax assets would be realized.  The Company continues to provide a valuation allowance against $15.3 million of U.S. net deferred tax assets since it is more likely than not that these assets will not be realized.
	During fiscal 2014, the Company recorded an additional valuation allowance of $12.3 million against net deferred tax assets in certain foreign jurisdictions.  This increase was largely related to losses in Germany and China based upon the determination that it was more likely than not that the net deferred tax assets in these jurisdictions will not be realized.  The Company will continue to provide a valuation allowance against its net deferred tax assets in each of the applicable jurisdictions going forward until the need for a valuation allowance is eliminated.  The need for the valuation allowance is eliminated when the Company determines it is more likely than not that the deferred tax assets will be realized.  Also during fiscal 2014, the Company recorded income tax benefits totaling $2.2 million related to foreign tax law changes.
	During fiscal 2012, the Company satisfied requirements under Hungarian regulations necessary to obtain development tax credits in Hungary and, as a result, recorded a $4.4 million tax benefit, which significantly impacted its effective tax rate for the year.
	The tax effects of temporary differences that give rise to deferred tax assets and deferred tax liabilities were as follows:
			March 31,
			2014			2013
	Deferred tax assets:
	Accounts receivable		$	0.2		$	0.4
	Inventories			4.1			4.1
	Plant and equipment			2.4			1.6
	Pension and employee benefits			39.1			48.5
	Net operating loss, capital loss, and credit carryforwards			122.4			117.6
	Other, principally accrued liabilities			10.3			12
	Total gross deferred tax assets			178.5			184.2
	Less: valuation allowance			(61.2	)		(172.8	)
	Net deferred tax assets			117.3			11.4
	Deferred tax liabilities:
	Goodwill			4.2			4.7
	Plant and equipment			7.6			5.6
	Other			1.7			2.9
	Total gross deferred tax liabilities			13.5			13.2
	Net deferred tax asset (liability)		$	103.8		$	(1.8	)
	Deferred tax assets and liabilities are reported in the consolidated balance sheets as follows:
			March 31,
			2014			2013
	Current deferred tax asset		$	13		$	6.6
	Noncurrent deferred tax asset			98.6			0.4
	Current deferred tax liability (other current liabilities)			(0.5	)		(0.2	)
Noncurrent deferred tax liability			(7.3	)		(8.6	)
Total		$	103.8		$	(1.8	)
A reconciliation of unrecognized tax benefits is as follows:
		Years ended March 31,
		2014			2013
Beginning balance		$	9		$	3.3
Gross increases - tax positions in prior period			2.5			5.6
Gross decreases - tax positions in prior period			(7.0	)		(0.1	)
Gross increases - tax positions in current period			0.1			0.6
Gross decreases - tax positions in current period			-			(0.4	)
Settlements			(1.9	)		-
Lapse of statute of limitations			(0.8	)		-
Effect of exchange rate changes			0.2			-
Ending balance		$	2.1		$	9
The Company’s liability for unrecognized tax benefits as of March 31, 2014 of $2.1 million, if recognized, would have an effective tax rate impact.
In accordance with its accounting policy, the Company recognizes accrued interest and penalties related to unrecognized tax benefits as a component of income tax expense.  During fiscal 2014, no interest and penalties were included as a component of income tax expense in the consolidated statement of operations.  At March 31, 2014 and 2013, accrued interest and penalties were not material.
The Company files income tax returns in multiple jurisdictions and is subject to examination by taxing authorities throughout the world.  During fiscal 2014, the Company was engaged in income tax examinations by the German taxing authority covering fiscal years 2006 through 2010 and the Austrian taxing authority covering fiscal years 2009 through 2011.  Both the German and Austrian audits were settled during fiscal 2014.  The Company does not anticipate a significant change in unrecognized tax benefits during the next twelve months.
The following tax years remain subject to examination for the Company’s major tax jurisdictions:
Austria	Fiscal 2012 - 2013
Brazil	Calendar 2009 - 2013
Germany	Fiscal 2011 - 2013
United States	Fiscal 2011 - 2013
At March 31, 2014, the Company has foreign tax credit carry forwards of $2.4 million that, if not utilized against domestic taxes, will expire between 2015 and 2017. The Company also has federal and state research and development tax credits of $18.7 million that, if not utilized against domestic taxes, will expire between 2018 and 2034.  The Company also has various state and local tax loss carry forwards of $188.0 million that, if not utilized against state apportioned taxable income, will expire at various times during 2015 through 2034.  In addition, the Company has tax loss carry forwards of $356.5 million in various tax jurisdictions throughout the world.  Certain of the carry forwards in the U.S. and many in foreign jurisdictions are offset by a valuation allowance.  If not utilized against taxable income, $195.5 million of these tax losses will expire at various times during 2015 through 2034, and $161.0 million, mainly related to India, Austria and Germany, will not expire due to an unlimited carry-forward period.
At March 31, 2014, the Company had provided $0.2 million of U.S. tax and $1.0 million of foreign tax on undistributed earnings of certain joint equity investment companies and certain European subsidiaries considered not permanently reinvested.  Undistributed earnings are considered permanently reinvested in the remaining foreign operations totaling $497.6 million, and no provision has been made for any taxes that would be payable upon the distribution of such earnings.  It is not practicable to estimate the amount of unrecognized withholding taxes and deferred tax liability on such earnings.

Earnings_Per_Share

Earnings Per Share	12 Months Ended
	Mar. 31, 2014
Earnings Per Share [Abstract]	'
Earnings Per Share	'
	Note 9:  Earnings Per Share
	The components of basic and diluted earnings per share are as follows:
		Years ended March 31,
		2014			2013			2012
	Basic:
	Earnings (loss) from continuing operations	$	131.9		$	(22.8	)	$	38
	Less: Net earnings attributable to noncontrolling interest		(1.5	)		(1.4	)		(0.3	)
	Less: Undistributed earnings attributable to unvested shares		(1.7	)		-			(0.2	)
	Earnings (loss) from continuing operations available to Modine shareholders		128.7			(24.2	)		37.5
	Earnings from discontinued operations		-			-			0.8
	Net earnings (loss) available to Modine shareholders	$	128.7		$	(24.2	)	$	38.3
	Weighted average shares outstanding - basic		46.9			46.6			46.5
	Basic Earnings Per Share:
	Earnings (loss) per share - continuing operations	$	2.75		$	(0.52	)	$	0.81
	Earnings per share - discontinued operations		-			-			0.02
	Net earnings (loss) per share - basic	$	2.75		$	(0.52	)	$	0.83
	Diluted:
	Earnings (loss) from continuing operations	$	131.9		$	(22.8	)	$	38
	Less: Net earnings attributable to noncontrolling interest		(1.5	)		(1.4	)		(0.3	)
	Less: Undistributed earnings attributable to unvested shares		(0.9	)		-			(0.2	)
	Earnings (loss) from continuing operations available to Modine shareholders		129.5			(24.2	)		37.5
	Earnings from discontinued operations		-			-			0.8
	Net earnings (loss) available to Modine shareholders	$	129.5		$	(24.2	)	$	38.3
	Weighted average shares outstanding - basic		46.9			46.6			46.5
	Effect of dilutive securities		0.7			-			0.4
	Weighted average shares outstanding - diluted		47.6			46.6			46.9
	Diluted Earnings Per Share:
	Earnings (loss) per share - continuing operations	$	2.72		$	(0.52	)	$	0.8
	Earnings per share - discontinued operations		-			-			0.02
	Net earnings (loss) per share - diluted	$	2.72		$	(0.52	)	$	0.82
	For the years ended March 31, 2014, 2013, and 2012, the calculation of diluted earnings per share excluded 0.8 million, 1.1 million, and 1.1 million stock options, respectively, because they were anti-dilutive. For the years ended March 31, 2014, 2013, and 2012, the calculation of diluted earnings per share excluded 0, 0.1 million, and 0.4 million restricted stock awards, respectively, because they were anti-dilutive.  For the year ended March 31, 2013, the total number of potential dilutive securities was 0.3 million.  However, these securities were not included in the computation of diluted net loss per share since to do so would decrease the loss per share.

Inventories

Inventories	12 Months Ended
	Mar. 31, 2014
Inventories [Abstract]	'
Inventories	'
	Note 10:  Inventories
	Inventories consisted of the following:
		March 31,
		2014		2013
	Raw materials and work in process	$	89.2	$	88.1
	Finished goods		27.6		30.7
	Total inventories	$	116.8	$	118.8

Property_Plant_and_Equipment

Property, Plant and Equipment	12 Months Ended
	Mar. 31, 2014
Property, Plant and Equipment [Abstract]	'
Property, Plant and Equipment	'
	Note 11:  Property, Plant and Equipment
	Property, plant and equipment, including depreciable lives, consisted of the following:
		March 31,
		2014			2013
	Land	$	10.4		$	10
	Buildings and improvements (10-40 years)		228.1			216.7
	Machinery and equipment (3-12 years)		715.1			679.1
	Office equipment (3-10 years)		89.5			95.7
	Construction in progress		35.5			31.6
			1,078.60			1,033.10
	Less: accumulated depreciation		(719.0	)		(677.2	)
	Net property, plant and equipment	$	359.6		$	355.9
	Depreciation expense totaled $57.3 million, $55.1 million and $57.1 million for the years ended March 31, 2014, 2013, and 2012, respectively.  Gains and losses related to the disposal of property, plant and equipment are recorded in SG&A expenses.  Total losses related to the disposal of property, plant and equipment were $2.6 million, $2.5 million and $0.6 million for the years ended March 31, 2014, 2013, and 2012, respectively.

Investment_in_Affiliate

Investment in Affiliate	12 Months Ended
	Mar. 31, 2014
Investment in Affiliate [Abstract]	'
Investment in Affiliate	'
	Note 12:  Investment in Affiliate
	The Company’s investment in its non-consolidated affiliate is accounted for under the equity method.  The Company has a 50 percent ownership of Nikkei Heat Exchanger Company, Ltd. (“NEX”).  At March 31, 2014 and 2013, we included the Company’s investment in NEX of $3.4 million and $3.3 million, respectively, in other noncurrent assets.  At March 31, 2014, the investment in NEX is equal to the Company's investment in the underlying assets.
	We report the results of operations for NEX in the consolidated financial statements using a one-month reporting delay.  We report equity in earnings from non-consolidated affiliates within other income and expense in the consolidated statements of operations.  The Company’s share of NEX’s earnings (loss) for the years ended March 31, 2014, 2013, and 2012 were $0.7 million, $0.3 million and ($0.1) million, respectively.

Intangible_Assets

Intangible Assets	12 Months Ended
	Mar. 31, 2014
Intangible Assets [Abstract]	'
Intangible Assets	'
	Note 13:  Intangible Assets
	Intangible assets consisted of the following:
		31-Mar-14							31-Mar-13
		Gross					Net		Gross					Net
		Carrying		Accumulated			Intangible		Carrying		Accumulated			Intangible
		Value		Amortization			Assets		Value		Amortization			Assets
	Tradenames	$	10.1	$	(5.7	)	$	4.4	$	9.6	$	(4.7	)	$	4.9
	Acquired technology		5.8		(0.2	)		5.6		3.5		(0.1	)		3.4
	Customer relationships		2.4		-			2.4		-		-			-
	Total intangible assets	$	18.3	$	(5.9	)	$	12.4	$	13.1	$	(4.8	)	$	8.3
	Amortization expense for the years ended March 31, 2014, 2013, and 2012 was $0.8 million, $0.7 million and $0.6 million, respectively.  Estimated future amortization expense is as follows:
	Fiscal Year	Estimated
		Amortization
		Expense
	2015	$	1.6
	2016		1.7
	2017		1.7
	2018		1.7
	2019		1.6
	2020 & Beyond		4.1

Goodwill

Goodwill	12 Months Ended
	Mar. 31, 2014
Goodwill [Abstract]	'
Goodwill	'
	Note 14:  Goodwill
	Changes in the carrying amount of goodwill, by segment and in the aggregate, were as follows:
				South			Commercial
		Asia		America			Products			Total
	Balance, March 31, 2012	$	0.5	$	13.5		$	15.9		$	29.9
	Acquisition		-		-			0.8			0.8
	Effect of exchange rate changes		-		(1.3	)		(0.7	)		(2.0	)
	Balance, March 31, 2013		0.5		12.2			16			28.7
	Effect of exchange rate changes		-		(1.3	)		1.3			-
	Balance, March 31, 2014	$	0.5	$	10.9		$	17.3		$	28.7
	As of March 31, 2014 and 2013, accumulated goodwill impairment losses totaled $23.8 million and $8.7 million within our North America and Europe segments, respectively.
	We assess goodwill for impairment annually or more frequently if events or circumstances change that would, more likely than not, reduce the fair value of a reporting unit below its carrying value.  The Company conducted its annual assessment for goodwill impairment in the fourth quarter of fiscal 2014 by applying a fair value-based test and determined that the fair value of the Company’s reporting units exceeded their respective book values.  In fiscal 2013 and 2012, the fair value of the Company’s reporting units also exceeded their respective book values.

Product_Warranties_Operating_L

Product Warranties, Operating Leases and Other Commitments	12 Months Ended
	Mar. 31, 2014
Product Warranties, Operating Leases and Other Commitments [Abstract]	'
Product Warranties, Operating Leases and Other Commitments	'
	Note 15:  Product Warranties, Operating Leases, and Other Commitments
	Product warranties: Modine provides product warranties for various product lines, with warranty periods generally ranging from one to five years.  The Company accrues for estimated future warranty costs in the period in which the sale is recorded. We base warranty expense estimates on the best information available using analytical and statistical analysis of both historical and current claim data.  We adjust these expenses if it becomes probable that expected claims will differ from initial estimates recorded at the time of sale.
	Changes in accrued warranty costs were as follows:
		Years ended March 31,
		2014			2013
	Beginning balance	$	12.6		$	11.4
	Accruals for warranties issued		6			4.9
	Accruals related to pre-existing warranties		8.3			2.7
	Settlements		(13.0	)		(6.1	)
	Effect of exchange rate changes		0.1			(0.3	)
	Ending balance	$	14		$	12.6
	Operating leases: Modine leases various facilities and equipment under operating leases.  Rental expense for these leases totaled $11.5 million, $11.3 million, and $9.0 million in fiscal 2014, 2013, and 2012, respectively.
	Future minimum rental commitments at March 31, 2014 under non-cancelable operating leases are as follows:
	Fiscal Year
	2015	$	7.9
	2016		5.6
	2017		4.1
	2018		2.6
	2019		1.8
	2020 and beyond		5.4
	Total future minimum rental commitments	$	27.4
	Indemnification agreements: From time to time, the Company provides indemnification agreements related to the sale or purchase of an entity or facility.  These indemnification agreements cover customary representations and warranties typically provided in conjunction with such transactions, including income, sales, excise or other tax matters, environmental matters and other third-party claims.  The indemnification periods provided generally range from less than one year to fifteen years.  In addition, standard indemnification provisions reside in many commercial agreements to which the Company is a party and relate to responsibility in the event of potential third-party claims.  The fair value of the Company’s outstanding indemnification obligations at March 31, 2014 is not material.
	Commitments: At March 31, 2014, the Company had capital expenditure commitments of $8.6 million.  Significant commitments include tooling and equipment expenditures for new and renewal platforms with customers in North America and Europe.  The Company utilizes inventory arrangements with certain vendors in the normal course of business under which the vendors maintain inventory stock at the Company’s facilities or at outside facilities.  Title passes to the Company at the time goods are withdrawn for use in production.  The Company has agreements with the vendors to use the material within a specific period of time.  In some cases, the Company bears the risk of loss for the inventory because Modine is required to insure the inventory against damage and/or theft.  This inventory is included within the Company’s consolidated balance sheets as raw materials inventory.
	The Company has a commitment to rebuild the leased Airedale facility, which suffered significant destruction from a fire during fiscal 2014.  The Company maintains insurance coverage and believes reimbursement for substantially all losses and costs directly attributable to the fire is probable.  See Note 2 for additional information.

Indebtedness

Indebtedness	12 Months Ended
	Mar. 31, 2014
Indebtedness [Abstract]	'
Indebtedness	'
	Note 16:  Indebtedness
	Long-term debt was comprised of the following:
		Fiscal year		31-Mar-14			31-Mar-13
		of maturity
	Foreign credit agreements	2016		$	0.5		$	1.9
	6.8% notes	2017-2021			125			125
	Revolving credit facility	2018			-			-
					125.5			126.9
	Capital lease obligations	2015-2030			6.5			6.1
					132			133
	Less: current portion				(0.8	)		(0.5	)
	Total long-term debt			$	131.2		$	132.5
	During fiscal 2014, the Company entered into a $175.0 million Amended and Restated Credit Agreement with a syndicate of banks.  The multi-currency credit agreement, which expires in August 2018, replaced the Company’s then-existing $145.0 million revolving credit facility that would have expired in August 2014.  Borrowings under the credit agreement bear interest at a variable rate based on the London Interbank Offered Rate (“LIBOR”) plus 125 to 225 basis points (1.5 percent at March 31, 2014) depending upon the Company’s leverage ratio, defined below.  At March 31, 2014, no borrowings were outstanding under the revolving credit facility. At March 31, 2014, domestic letters of credit totaled $9.0 million, resulting in available borrowings under the Company’s domestic revolving credit facility of $166.0 million.
	The Company also maintains credit agreements for its foreign subsidiaries with outstanding short-term borrowings at March 31, 2014 and 2013 of $32.4 million and $30.6 million, respectively.  At March 31, 2014, the Company’s foreign unused lines of credit totaled $52.0 million.  In aggregate, the Company had total available lines of credit of $218.0 million at March 31, 2014.
	Provisions in the Company’s revolving credit facility, Senior Note agreements, and various foreign credit agreements require the Company to maintain compliance with various covenants and include certain cross-default clauses. Under the Company’s primary debt agreements in the U.S., the Company is subject to a leverage ratio covenant, which requires the Company to limit its consolidated indebtedness, less a certain portion of the Company’s cash balance, both as defined by the credit agreement, to no more than three and one-quarter times consolidated net earnings before interest, taxes, depreciation, amortization, and certain other adjustments (“Adjusted EBITDA”).  The Company is also subject to an interest expense coverage ratio, which requires the Company to maintain Adjusted EBITDA of at least three times consolidated interest expense.  The Company was in compliance with its debt covenants as of March 31, 2014.
	Long-term debt matures as follows:
	Fiscal Year
	2015	$	0.8
	2016		0.5
	2017		8.3
	2018		16.3
	2019		16.4
	2020 & beyond		89.7
	Total	$	132
	The Company estimates the fair value of long-term debt using discounted future cash flows at rates offered to the Company for similar debt instruments of comparable maturities.  At March 31, 2014 and 2013, the carrying value of Modine’s long-term debt approximated fair value, with the exception of the Senior Notes, which had a fair value of approximately $140.0 million and $139.0 million, respectively.  The fair value of the Senior Notes is categorized as Level 2 within the fair value hierarchy.  Refer to Note 4 for the definition of a Level 2 fair value measurement.

Pension_and_Employee_Benefit_P

Pension and Employee Benefit Plans	12 Months Ended
	Mar. 31, 2014
Pension and Employee Benefit Plans [Abstract]	'
Pension and Employee Benefit Plans	'
	Note 17:  Pension and Employee Benefit Plans
	Defined Contribution Employee Benefit Plans:
	401(k) plans: The Company maintains domestic 401(k) plans that allow employees to contribute a portion of their salary to help save for retirement.  The Company matched 50 percent of employee contributions, up to 5 percent of employee compensation, during fiscal 2014, 2013, and 2012.  Modine also makes annual employer contributions into active employee accounts based upon a percentage of employee compensation.  Employees can choose among various investment alternatives, including (subject to restrictions) Modine stock.  The Company’s matching contributions and the annual employer contributions are discretionary.  Modine’s expense for defined contribution employee benefit plans during fiscal 2014, 2013, and 2012 was $8.3 million, $4.1 million, and $4.4 million, respectively.  The increased expense in fiscal 2014 was primarily due to higher discretionary employer contributions.
	In addition, the Company maintains a non-qualified deferred compensation plan for eligible employees, and various foreign subsidiaries have in place government-required defined contribution plans under which Modine contributes a percentage of employee earnings into accounts, consistent with local laws.
	Statutory Termination Plans:
	Certain of Modine’s foreign subsidiaries have statutory termination indemnity plans covering eligible employees.  The benefits under these plans are based upon years of service and final average compensation levels or a monthly retirement benefit amount.  These programs are all substantially unfunded in accordance with local laws, but are often covered by national obligatory umbrella insurance programs that protect employees from losses in the event that an employer defaults on its obligations.
	Defined Benefit Employee Benefit Plans:
	Pension plans: Modine has a non-contributory defined benefit pension plan that covers most of its domestic employees hired on or before December 31, 2003.  The benefits provided are based primarily on years of service and average compensation for salaried and some hourly employees.  Benefits for other hourly employees are based on a monthly retirement benefit amount.  Domestic salaried employees hired after December 31, 2003 are not covered under any defined benefit plan.  Currently the Company’s domestic pension plans do not include increases in annual earnings or future service in calculating the average annual earnings and years of credited service under the pension plan formula.  Certain of Modine’s foreign subsidiaries also have legacy defined benefit plans covering a small number of active employees.
	Company contributions of $8.0 million, $9.2 million, and $11.5 million to our U.S. pension plans during fiscal 2014, 2013, and 2012, respectively, are reported in the change in other noncurrent assets and liabilities in the consolidated statements of cash flows.
	Postretirement plans: The Company provides selected healthcare and life insurance benefits for eligible retired domestic employees.  Modine periodically amends these unfunded plans to change the contribution rate of retirees and the amounts and forms of coverage.  An annual limit on the Company’s cost is defined for the majority of these plans.
	Measurement Date:  Modine uses March 31 as the measurement date for its pension and postretirement plans.
	The change in benefit obligations and plan assets as well as the funded status of Modine's pension and postretirement plans for the fiscal years ended March 31, 2014 and 2013 were as follows:
		Pension Plans						Postretirement Plans
		2014			2013			2014			2013
	Change in benefit obligation:
	Benefit obligation at beginning of year	$	309.6		$	281.8		$	7.5		$	7.2
	Service cost		0.6			0.6			0.1			0.1
	Interest cost		13			13.5			0.2			0.3
	Actuarial (gain) loss		(10.8	)		27.1			(1.4	)		0.1
	Benefits paid		(18.6	)		(12.6	)		(0.5	)		(0.2	)
	Effect of exchange rate changes		1.9			(0.8	)		-			-
	Benefit obligation at end of year	$	295.7		$	309.6		$	5.9		$	7.5
	Change in plan assets:
	Fair value of plan assets at beginning of year	$	200.6		$	186.6		$	-		$	-
	Actual return on plan assets		22.2			16.2			-			-
	Benefits paid		(18.6	)		(12.6	)		(0.5	)		(0.2	)
	Employer contributions		9.5			10.4			0.5			0.2
	Fair value of plan assets at end of year	$	213.7		$	200.6		$	-		$	-
	Funded status at end of year	$	(82.0	)	$	(109.0	)	$	(5.9	)	$	(7.5	)
	Amounts recognized in the consolidated balance sheets:
	Current liability	$	(1.0	)	$	(1.0	)	$	(0.5	)	$	(0.8	)
	Noncurrent liability		(81.0	)		(108.0	)		(5.4	)		(6.7	)
		$	(82.0	)	$	(109.0	)	$	(5.9	)	$	(7.5	)
	Amounts recognized in accumulated other comprehensive loss:
	Net actuarial loss (gain)	$	153.4		$	176.4		$	(1.7	)	$	(0.3	)
	Prior service credit		-			-			(0.2	)		(1.5	)
		$	153.4		$	176.4		$	(1.9	)	$	(1.8	)
	The accumulated benefit obligation for all defined benefit pension plans was $293.0 million and $307.2 million as of March 31, 2014 and 2013, respectively.
	Costs for Modine’s pension and postretirement benefit plans include the following components for the fiscal years ended March 31, 2014, 2013, and 2012:
		Pension Plans									Postretirement Plans
		2014			2013			2012			2014			2013			2012
	Components of net periodic benefit costs:
	Service cost	$	0.6		$	0.6		$	1.4		$	0.1		$	0.1		$	-
	Interest cost		13			13.5			13.9			0.2			0.3			0.4
	Expected return on plan assets		(15.7	)		(16.1	)		(15.7	)		-			-			-
	Amortization of:
	Unrecognized net loss (gain)		6.3			5			7			(0.1	)		-			-
	Unrecognized prior service credit		-			-			-			(1.2	)		(1.5	)		(1.7	)
	Adjustment for curtailment		-			-			-			-			-			(0.3	)
	Net periodic benefit cost (income)	$	4.2		$	3		$	6.6		$	(1.0	)	$	(1.1	)	$	(1.6	)
	Other changes in plan assets and benefit obligation recognized in other comprehensive (income) loss:
	Net actuarial (gain) loss	$	(17.3	)	$	27		$	45.7		$	(1.4	)	$	-		$	0.7
	Prior service costs		-			-			-			-			-			0.3
	Reversal of amortization items:
	Net actuarial (gain) loss		(6.3	)		(5.0	)		(7.0	)		0.1			0.1			-
	Prior service costs		-			-			-			1.2			1.5			1.7
	Total recognized in other comprehensive (income) loss	$	(23.6	)	$	22		$	38.7		$	(0.1	)	$	1.6		$	2.7
	The estimated net actuarial loss for the pension plans expected to be amortized from accumulated other comprehensive loss into net periodic benefit cost during fiscal 2015 is $5.4 million.  The estimated prior service credit and the net actuarial gain for the postretirement plans expected to be amortized from accumulated other comprehensive loss into net periodic benefit income during fiscal 2015 total $0.2 million.
	The weighted average assumptions used to determine Modine’s benefit obligation under the plans were as follows:
		2014						2013
		U.S. Plans			Foreign Plans			U.S. Plans			Foreign Plans
	Pension plans:
	Discount rate		4.7	%		3	%		4.4	%		3.5	%
Postretirement plans:
Discount rate		4.3	%		N/	A		3.7	%		N/	A
The weighted average assumptions used to determine Modine's costs under the plans were as follows:
	Years ended March 31,
	2014						2013						2012
	U.S. Plans			Foreign Plans			U.S. Plans			Foreign Plans			U.S. Plans			Foreign Plans
Pension plans:
Discount rate		4.4	%		3.5	%		4.9	%		5	%		5.8	%		5.8	%
Expected return on plan assets		8	%		N/	A		8	%		N/	A		8	%		N/	A
Postretirement plans:
Discount rate		3.7	%		N/	A		4.4	%		N/	A		5.4	%		N/	A
The discount rates used to determine the present value of the Company’s future U.S. pension obligations as of the measurement date use a methodology that equates the plans’ projected benefit obligations to a present value, calculated using a yield curve.  The yield curve was constructed from a portfolio of high quality, non-callable corporate debt securities with maturities ranging from six months to thirty years.  We determined the discount rate by matching the pension plans’ expected cash flows with spot rates developed from the yield curve.  The discount rate used to determine the present value of the Company’s future foreign pension obligations as of the measurement date is based upon the yield for zero coupon bonds plus a yield margin measured as the difference between euro denominated corporate bonds (AA or higher) in Europe and government bonds.
Plan assets in the U.S. defined benefit plans comprise 100 percent of the Company’s world-wide benefit plan assets.  Modine's U.S. pension plan weighted average asset allocations at the measurement dates of March 31, 2014 and 2013 were as follows:
	Target allocation			Plan assets
				2014			2013
Equity securities		55	%		57	%		57	%
Debt securities		38	%		37	%		37	%
Alternative assets		5	%		5	%		5	%
Cash		2	%		1	%		1	%
		100	%		100	%		100	%
Due to market conditions and other factors, including timing of benefit payments, actual asset allocation may vary from the target allocation outlined above.  We periodically rebalance the assets to the target allocations.  There were no shares of Modine common stock included in the plan assets at the end of fiscal 2014 and 2013.
Modine employs a total return investment approach, whereby a mix of equities and fixed-income investments are used to maximize the long-term return of plan assets while avoiding excessive risk.  We have established pension plan guidelines based upon an evaluation of market conditions, tolerance for risk and cash requirements for benefit payments.  We measure and monitor investment risk on an ongoing basis through quarterly investment portfolio reviews, annual liability measurements and periodic asset/liability studies.
The expected rate of return on U.S. plan assets is based upon historical return experience and forward-looking return expectations for major asset class categories.  For fiscal year 2015 U.S. pension plan expense, Modine has assumed a rate of 8.0 percent, net of administrative expenses.
With respect to the postretirement plans, for measurement purposes, the assumed healthcare cost trend rates were as follows:
	Years ended March 31,
	2014			2013
Healthcare costs trend rate		7.3	%		7.5	%
Ultimate trend rate		5	%		5	%
Year the rate reaches the ultimate trend rate		2019			2019
Assumed healthcare cost trend rates affect the amounts reported for the postretirement plans.  One percentage point change would have a less than $0.1 million effect on the total service and interest cost.  While one percentage point increase or decrease would have a $0.1 million and ($0.1) million effect, respectively, on the postretirement benefit obligation.
The Company’s funding policy for domestic qualified pension plans is to contribute annually, at a minimum, the amount necessary on an actuarial basis to provide for benefits in accordance with applicable laws and regulations.  Modine anticipates that it will make contributions of $9.5 million to these plans during fiscal 2015.
Estimated pension benefit payments for the next ten fiscal years are as follows:
Fiscal Year	Estimated pension
	benefit payments
2015	$	15.6
2016		15.7
2017		16.2
2018		17.6
2019		18
2020-2024		95.3

Derivative_Instruments

Derivative Instruments	12 Months Ended
	Mar. 31, 2014
Derivative Instruments [Abstract]	'
Derivative Instruments	'
	Note 18:  Derivative Instruments
	Modine uses derivative financial instruments from time to time as a tool to manage certain financial risks.  Leveraged derivatives are prohibited by Company policy.  Accounting for derivatives and hedging activities requires derivative financial instruments to be measured at fair value and recognized as assets or liabilities in the consolidated balance sheets.  Accounting for the gain or loss resulting from the change in fair value of the derivative financial instruments depends on whether it has been designated, and is effective, as a hedge and, if so, on the nature of the hedging activity.
	Commodity Derivatives:  The Company has, from time to time, entered into futures contracts related to certain forecasted purchases of aluminum and copper.  The Company’s strategy in entering into these contracts is to reduce its exposure to changing market prices for future purchases of these commodities.  The Company has not designated commodity contracts entered into in fiscal 2013 and 2014 for hedge accounting.  Accordingly, unrealized gains and losses on those contracts are recorded within cost of sales. The Company designated contracts entered into prior to fiscal 2013 for hedge accounting. Accordingly, the amounts recorded in accumulated other comprehensive income (loss) (“AOCI”) related to those contracts remained in AOCI until the underlying commodity purchases impacted earnings.
	Foreign exchange contracts:  The Company’s foreign exchange risk management strategy uses derivative financial instruments in a limited way to mitigate foreign currency exchange risk.  The Company periodically enters into foreign currency exchange contracts to hedge specific foreign currency denominated assets and liabilities.  The Company has not designated these contracts for hedge accounting.  Accordingly, unrealized gains and losses related to changes in fair value are recorded in other income and expense.  Gains and losses on these foreign currency contracts are offset by foreign currency gains and losses associated with the related assets and liabilities.
	The fair value of the Company’s derivative financial instruments recorded in the consolidated balance sheets were as follows:
		Balance Sheet Location		31-Mar-14			31-Mar-13
	Derivative instruments:
	Foreign exchange contracts	Other current liabilities		$	0.2		$	0.1
	Commodity derivatives	Other current liabilities			0.1			1.2
	Commodity derivatives	Other noncurrent liabilities			0.1			0.1
	The amounts recorded in AOCI and in the consolidated statements of operations for all of the Company’s derivative financial instruments were as follows:
			31-Mar-14
			Amount of Loss			Statement of	Loss Reclassified from		Total Loss Recognized in
			Recognized in			Operations Location	AOCI into Continuing		Continuing Operations
			AOCI				Operations
	Commodity derivatives		$	-		Cost of sales	$	0.5	$	0.5
	Total		$	-			$	0.5	$	0.5
			31-Mar-13
			Amount of Loss			Statement of	Loss Reclassified from		Total Loss (Gain)
			Recognized in			Operations Location	AOCI into Continuing		Recognized in Continuing
			AOCI				Operations		Operations
	Commodity derivatives		$	0.5		Cost of sales	$	2.6	$	4.6
	Foreign exchange contracts			-		Other expense - net		-		(0.3	)
	Total		$	0.5			$	2.6	$	4.3
			31-Mar-12
			Amount of Loss			Statement of	Loss Reclassified from		Total Loss Recognized in
			Recognized in			Operations Location	AOCI into Continuing		Continuing Operations
			AOCI				Operations
	Commodity derivatives		$	3.1		Cost of sales	$	3.1	$	3
	Foreign exchange contracts			-		Other expense - net		-		0.4
	Total		$	3.1			$	3.1	$	3.4

Contingencies_and_Litigation

Contingencies and Litigation	12 Months Ended
	Mar. 31, 2014
Contingencies and Litigation [Abstract]	'
Contingencies and Litigation	'
	Note 19:  Contingencies and Litigation
	Market risk:  The Company sells a broad range of products that provide thermal solutions to customers operating primarily in the commercial vehicle, off-highway, automotive, and commercial heating and air conditioning markets.  The Company operates in diversified markets as a strategy for offsetting the risk associated with a downturn in any one or more of the markets it serves.  The Company pursues new market opportunities after careful consideration of the potential associated risks and benefits.  However, the risk associated with market downturns, such as the downturn experienced in fiscal 2009 and 2010, is still present.
	Credit risk:  The Company invests excess cash primarily in investment quality, short-term liquid debt instruments.  Financial instruments that potentially subject the Company to significant concentrations of credit risk consist principally of accounts receivable.  The Company sells a broad range of products that provide thermal solutions to customers operating throughout the world.  In fiscal 2014 and 2013, one customer accounted for ten percent or more of the total Company sales, while in fiscal 2012, no customer accounted for ten percent or more of total Company sales.  Sales to the Company’s top ten customers were 56 percent, 59 percent, and 61 percent of total sales in fiscal 2014, 2013, and 2012, respectively.  At March 31, 2014 and 2013, 46 percent and 51 percent, respectively, of the Company's trade accounts receivable were from the Company's top ten individual customers.  These customers operate primarily in the automotive, truck, and heavy equipment markets and are influenced by similar market and general economic factors.  Collateral or advanced payments are generally not required, but they may be used in those cases where we identify a substantial credit risk.  Credit losses to customers operating in the markets served by the Company have not been significant.
	The Company manages credit risk through its focus on the following:
		·	Cash and investments – reviewing cash deposits and short-term investments to ensure banks have credit ratings acceptable to the Company and that short-term investments are maintained in secured or guaranteed instruments;
		·	Accounts receivable – performing periodic customer credit evaluations and actively monitoring their financial condition and applicable business news;
		·	Pension assets – ensuring that investments within these plans provide appropriate diversification, monitoring of investment teams, ensuring that portfolio managers are adhering to the Company’s investment policies and directives, and ensuring that exposure to high risk investments is limited; and
		·	Insurance – ensuring that insurance providers maintain financial ratings that are acceptable to the Company.
	Counterparty risks:  The Company manages counterparty risks through its focus on the following:
		·	Customers – performing thorough reviews of customer credit reports and accounts receivable aging reports by internal credit committees;
		·	Suppliers – maintaining a supplier risk management program and utilizing industry sources to identify and mitigate high risk situations; and
		·	Derivatives – ensuring that counterparties to derivative instruments maintain credit ratings that are acceptable to the Company.
	Europe value added tax:  During fiscal 2012, the Company determined it was not properly applying value added tax (“VAT”) to certain cross-border transactions within the Europe segment and established an accrual of $10.7 million for estimated VAT liabilities, including interest and penalties.  During fiscal 2013 and 2014, the Company completed the registration and filing process with the taxing authorities and began making payments to the applicable jurisdictions.  During fiscal 2014 and 2013, the Company recorded reductions to SG&A expenses of $2.9 million and $1.6 million, respectively, as a result of favorable changes to the estimated VAT obligations.  At March 31, 2014 and 2013, the accrual for estimated VAT obligations was $1.5 million and $4.4 million, respectively.
	Trade Compliance:  During fiscal 2011, the Company determined that it was not in compliance with certain trade regulations related to import and export activity between its warehouse in Laredo, Texas and its plant in Nuevo Laredo, Mexico.  The Company disclosed these trade compliance matters to certain government agencies and recorded a related liability of $4.5 million.  During fiscal 2012, the Company recorded income of $2.3 million within SG&A expenses based on revised estimates to resolve this matter.
	Environmental:  The United States Environmental Protection Agency (“USEPA”) has designated the Company as a potentially responsible party (“PRP”) for remediation of three sites where the Company had involvement.  These sites include: Auburn Incinerator, Inc./Lake Calumet Cluster (Illinois), Cam-Or (Indiana) and a scrap metal site known as Chemetco (Illinois).  In addition, Modine is voluntarily participating in the care of an inactive landfill owned by the City of Trenton (Missouri).  These sites are not Company-owned and allegedly contain materials attributable to Modine from past operations.  The percentage of material allegedly attributable to Modine is relatively low.  Remediation of these sites is in various stages of administrative or judicial proceedings and includes recovery of past governmental costs and the costs of future investigations and remedial actions.  The Company accrues for costs anticipated for the remedial settlement of the sites listed above if they are probable and can be reasonably determined.  Costs anticipated for the remedial settlement of the sites listed above that are not probable or cannot be reasonably determined at this time have not been accrued; however, the Company does not believe any potential costs would be material to the Company’s financial position due to Modine’s relatively small portion of contributed materials.
	The Company has recorded environmental investigation and remediation accruals for groundwater contamination at its manufacturing facility in Brazil and subsurface contamination at its former manufacturing facility in the Netherlands, along with other lesser environmental matters at certain facilities located in the United States.  These accruals generally relate to facilities where past operations followed practices and procedures that were considered acceptable under then-existing regulations, or where the Company is a successor to the obligations of prior owners, and current laws and regulations require investigative and/or remedial work to ensure sufficient environmental compliance.  The accruals for these environmental matters totaled $5.1 million and $5.2 million at March 31, 2014 and 2013, respectively. During fiscal 2012, we recorded additional reserves of $1.0 million as a component of continuing operations and recorded reductions to the reserves of $0.5 million as a component of discontinued operations.  As additional information becomes available, we will assess any potential liability related to these matters and revise the estimated accrual, if necessary.  Based on currently available information, Modine believes that the ultimate outcome of these matters, individually and in the aggregate, will not have a material adverse effect on its financial position.  However, these matters are subject to inherent uncertainties, and unfavorable outcomes could occur, including significant monetary damages.  During fiscal 2011, one of the adjacent businesses to the Company’s facility in Brazil filed suit against Modine’s Brazilian subsidiary seeking remediation and certain other damages as a result of contamination allegedly attributable to Modine’s operations.  The Company is defending this suit and believes that the ultimate outcome of this matter will not be material.
	Other litigation:  In the normal course of business, the Company and its subsidiaries are named as defendants in various other lawsuits and enforcement proceedings by private parties, governmental agencies and/or others in which claims are asserted against Modine.  In the opinion of management, the liabilities, if any, which may ultimately result from such lawsuits or proceedings are not expected to have a material adverse effect on the Company’s consolidated financial statements.

Accumulated_Other_Comprehensiv

Accumulated Other Comprehensive Loss	12 Months Ended
	Mar. 31, 2014
Accumulated Other Comprehensive Loss [Abstract]	'
Accumulated Other Comprehensive Loss	'
	Note 20:  Accumulated Other Comprehensive Loss
	Changes in accumulated other comprehensive loss were as follows:
			Foreign		Cash Flow			Defined			Total
			Currency		Hedges			Benefit Plans
			Translation
	Balance, March 31, 2013		$	17.8	$	(1.1	)	$	(145.1	)	$	(128.4	)
	Other comprehensive income before reclassifications			9.5		-			18.7			28.2
	Reclassifications:
	Amortization of unrecognized net loss (a)			-		-			6.2			6.2
	Amortization of unrecognized prior service credit (a)			-		-			(1.2	)		(1.2	)
	Commodity derivatives (b)			-		0.5			-			0.5
	Tax benefit (expense)			-		0.6			(9.8	)		(9.2	)
	Total other comprehensive income			9.5		1.1			13.9			24.5
	Balance, March 31, 2014		$	27.3	$	-		$	(131.2	)	$	(103.9	)
		(a)	Amounts are included in the calculation of net periodic benefit cost.  See Note 17 for additional information.
		(b)	Reclassifications for commodity derivatives are included in cost of sales.

Segment_and_Geographic_Informa

Segment and Geographic Information	12 Months Ended
	Mar. 31, 2014
Segment and Geographic Information [Abstract]	'
Segment and Geographic Information	'
	Note 21:  Segment and Geographic Information
	Modine’s product lines consist of heat-transfer components and systems.  Modine serves the vehicular, industrial, and building heating, ventilating and air conditioning markets.  The Company has five operating segments as follows:
	North America:
	Comprised of vehicular and industrial original equipment products in North America.
	Europe:
	Comprised of vehicular and industrial original equipment products in Europe.
	South America:
	Comprised of vehicular and industrial original equipment products and aftermarket products in South America.
	Asia:
	Comprised of vehicular and industrial original equipment products in Asia.
	Commercial Products:
	Comprised of building heating, ventilating and air conditioning products throughout the world.
	Each operating segment is managed by a vice president or managing director and has separate financial results reviewed by the Company’s chief operating decision maker.  These results are used by management in evaluating the performance of each segment and in making decisions on the allocation of resources among the Company’s various businesses.
	The following is a summary of net sales, gross profit, and operating income by segment:
			Years ended March 31,
	Net sales:		2014			2013			2012
	North America		$	568.7		$	564.5		$	602
	Europe			584.4			498			602.8
	South America			122.7			133.8			175.6
	Asia			71.5			59.5			84.1
	Commercial Products			146.5			139.3			142.2
	Segment total			1,493.80			1,395.10			1,606.70
	Corporate and eliminations			(16.2	)		(19.1	)		(29.5	)
	Net sales		$	1,477.60		$	1,376.00		$	1,577.20
			Years ended March 31,
			2014						2013						2012
	Gross profit:		$'s			% of sales			$'s			% of sales			$'s		% of sales
	North America		$	93.5			16.4	%	$	81.4			14.4	%	$	89.7		14.9	%
	Europe			70.8			12.1	%		61			12.3	%		85.1		14.1	%
	South America			20.8			16.9	%		22.5			16.8	%		30.9		17.6	%
	Asia			8.9			12.5	%		1.7			2.8	%		7.9		9.4	%
	Commercial Products			43.4			29.6	%		40.8			29.3	%		42.5		29.9	%
	Segment total			237.4			15.9	%		207.4			14.9	%		256.1		15.9	%
	Corporate and eliminations			0.8			-			1.2			-			0.5		-
	Gross profit		$	238.2			16.1	%	$	208.6			15.2	%	$	256.6		16.3	%
			Years ended March 31,
	Operating income:		2014			2013			2012
	North America		$	42.1		$	39.2		$	47.9
	Europe (a)			9.6			(25.4	)		26.3
	South America			7.5			11.2			10.4
	Asia			(3.3	)		(8.8	)		(2.5	)
	Commercial Products			9.4			10			14.3
	Segment total			65.3			26.2			96.4
	Corporate and eliminations (a)			(28.1	)		(26.8	)		(28.9	)
	Operating income (loss)		$	37.2		$	(0.6	)	$	67.5
		(a)	Segment operating income for fiscal 2013 and 2012 has been recast to conform to the fiscal 2014 presentation. The Company has modified its internal financial reporting of intercompany charges for research and development and intercompany royalties between Corporate and the Europe segment, which totaled $9.3 million and $11.0 million for fiscal years 2013 and 2012, respectively.  There was no impact on the total Company consolidated financial results.
	Inter-segment sales are accounted for based on an established markup over production costs.  Net sales for corporate and eliminations primarily represent the elimination of inter-segment sales.  Operating loss for corporate includes certain research and development costs, legal, finance and other general corporate expenses, and also includes a portion of central services costs that are not directly attributable to an operating segment.
	Following is a summary of assets by segment:
			March 31,
	Total assets:		2014			2013
	North America		$	218.1		$	218.3
	Europe			367.9			332.2
	South America			80.1			91.8
	Asia			92.8			91.3
	Commercial Products (a)			132.7			73.7
	Corporate and eliminations (b)			140.7			11.5
	Total assets		$	1,032.30		$	818.8
		(a)	Total assets within the Commercial Products segment included receivables and cash advances from the Company’s insurance provider and reconstruction costs paid to date related to the Airedale fire, which totaled $45.0 million as of March 31, 2014.  See Note 2 for additional information.
		(b)	The increase in total assets within corporate and eliminations was primarily due to a $119.2 million reversal of deferred tax asset valuation allowances in the U.S. as of March 31, 2014.  See Note 8 for additional information.
	Following is a summary of capital expenditures and depreciation and amortization expense by segment:
			Years ended March 31,
	Capital expenditures:		2014			2013			2012
	North America		$	18.9		$	19		$	15.2
Europe			22.9			16.5			29.8
South America			5.7			3.4			5.2
Asia			4.6			7.8			12.5
Commercial Products			1			3.1			1.7
Total capital expenditures		$	53.1		$	49.8		$	64.4
		Years ended March 31,
Depreciation and amortization expense:		2014			2013			2012
North America		$	19.3		$	20.1		$	20
Europe			26.6			23.4			26.5
South America			3.3			3.7			4.1
Asia			6.7			6.4			5
Commercial Products			2.2			2.2			2.1
Total depreciation and amortization expense		$	58.1		$	55.8		$	57.7
Following is a summary of net sales by geographical area, based upon the location of the selling unit:
		Years ended March 31,
Net sales by country:		2014			2013			2012
United States		$	645.7		$	637.4		$	666.2
Germany			229.5			214.8			285.9
Brazil			122			128.8			169.1
Hungary			150.3			117.6			149.1
Other			330.1			277.4			306.9
Net sales		$	1,477.60		$	1,376.00		$	1,577.20
Following is a summary of long-lived assets, excluding goodwill, intangible assets, and deferred tax assets, by geographical area:
		March 31,
Long-lived assets:		2014			2013
United States		$	112.9		$	115.1
Germany			94.6			94.3
Other			186.3			173.4
Long-lived assets		$	393.8		$	382.8
Following is a summary of net sales by product type:
		Years ended March 31,
Net sales by product type:		2014			2013			2012
Modules/assemblies		$	379.9		$	358.5		$	410.4
Oil coolers			215.4			194.1			249.4
EGR coolers			172.5			136.1			152.7
Building HVAC			159.5			151.8			153.3
Charge air coolers			157			161.8			173.9
Condensers			129.2			128.8			101.5
Radiators			129			134.4			191.4
Other			135.1			110.5			144.6
Net sales		$	1,477.60		$	1,376.00		$	1,577.20

Quarterly_Financial_Data_Unaud

Quarterly Financial Data (Unaudited)	12 Months Ended
	Mar. 31, 2014
Quarterly Financial Data (Unaudited) [Abstract]	'
Quarterly Financial Data (Unaudited)	'
	Note 22:  Quarterly Financial Data (Unaudited)
	Quarterly financial data is summarized below for the years ended March 31, 2014 and 2013:
			Fiscal 2014 quarters ended
			June			Sept.			Dec.			March			Fiscal 2014
	Net sales		$	375.8		$	364.2		$	347		$	390.6		$	1,477.60
	Gross profit			61.9			57.2			56.8			62.3			238.2
	Earnings (loss) from continuing operations (a)(b)			10.6			5			(3.4	)		119.7			131.9
	Net earnings (loss) attributable to Modine (a)(b)			10			4.6			(3.6	)		119.4			130.4
	Net earnings (loss) per share attributable to Modine shareholders:
	Basic		$	0.21		$	0.1		$	(0.08	)	$	2.51		$	2.75
	Diluted			0.21			0.1			(0.08	)		2.49			2.72
			Fiscal 2013 quarters ended
			June			Sept.			Dec.			March			Fiscal 2013
	Net sales		$	350.4		$	339.9		$	326.1		$	359.6		$	1,376.00
	Gross profit			51.7			52.6			48.2			56.1			208.6
	Loss from continuing operations (a)			(1.0	)		(11.8	)		(8.4	)		(1.6	)		(22.8	)
	Net loss attributable to Modine (a)			(1.2	)		(12.2	)		(8.7	)		(2.1	)		(24.2	)
	Net loss per share attributable to Modine shareholders:
	Basic		$	(0.03	)	$	(0.26	)	$	(0.19	)	$	(0.04	)	$	(0.52	)
	Diluted			(0.03	)		(0.26	)		(0.19	)		(0.04	)		(0.52	)
		(a)	The quarterly financial data presented above includes restructuring expenses and impairment charges, primarily related to our Europe restructuring program and certain restructuring actions in the U.S.  During fiscal 2014, restructuring expenses totaled $0.5 million, $0.6 million, $9.4 million, and $5.6 million for the quarters ended June 30, 2013, September 30, 2013, December 31, 2013, and March 31, 2014, respectively. The Company recorded impairment charges of $2.0 million and $1.2 million during the quarters ended December 31, 2013 and March 31, 2014, respectively.  During fiscal 2013, restructuring expenses totaled $4.6 million, $1.3 million, $1.4 million, and $9.7 million for the quarters ended June 30, 2012, September 30, 2012, December 31, 2012, and March 31, 2013, respectively.  The Company recorded impairment charges of $16.7 million, $8.3 million, and $0.9 million during the quarters ended September 30, 2012, December 31, 2012, and March 31, 2013, respectively.  See Note 6 for additional information.
		(b)	The quarter ended March 31, 2014 was benefited by the reversal of U.S. income tax valuation allowances totaling $119.2 million.  See Note 8 for additional information.

SCHEDULE_II_VALUATION_AND_QUAL

SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS	12 Months Ended
	Mar. 31, 2014
SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS [Abstract]	'
SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS	'
	SCHEDULE II ‑ VALUATION AND QUALIFYING ACCOUNTS
	For the years ended March 31, 2014, 2013 and 2012
	(In millions)
				Additions
	Description	Balance at		Charged			Charged to				Deductions				Balance at
		Beginning of		(Benefit) to			Other								End of Period
		Period		Costs and			Accounts
				Expenses
	2014: Allowance for Doubtful Accounts	$	0.8	$	0.6		$	-		(B)	$	(0.3	)	(A)	$	1.1
	Valuation Allowance for Deferred Tax Assets	$	172.8	$	(113.1	)	$	1.5		(B)	$	-			$	61.2
	2013: Allowance for Doubtful Accounts	$	0.8	$	0.5		$	(0.1	)	(B)	$	(0.4	)	(A)	$	0.8
	Valuation Allowance for Deferred Tax Assets	$	146.8	$	7.7		$	18.3		(B)	$	-			$	172.8
	2012: Allowance for Doubtful Accounts	$	0.8	$	0.1		$	-		(B)	$	(0.1	)	(A)	$	0.8
	Valuation Allowance for Deferred Tax Assets	$	129.6	$	1		$	16.2		(B)	$	-			$	146.8
	Notes:
	(A) Bad debts charged off during the year
	(B) Translation and other adjustments

Significant_Accounting_Policie1

Significant Accounting Policies (Policies)	12 Months Ended
	Mar. 31, 2014
Significant Accounting Policies [Abstract]	'
Basis of presentation	'
	Basis of presentation:  We prepare the consolidated financial statements in conformity with generally accepted accounting principles (“GAAP”) in the United States.  These principles require management to make certain estimates and assumptions in determining assets, liabilities, revenue, expenses and related disclosures.  Actual amounts could differ from those estimates.
Consolidation principles	'
	Consolidation principles:  The consolidated financial statements include the accounts of Modine Manufacturing Company and its majority-owned or Modine-controlled subsidiaries.  We eliminate intercompany transactions and balances in consolidation.
	During fiscal 2012, the Company completed the formation of a joint venture with OneGene, Inc. to form Modine OneGene Corporation in South Korea.  The Company and OneGene, Inc. each made initial capital contributions of 1,000 million Korean won ($0.9 million) during fiscal 2012.  Modine is considered the primary beneficiary of the joint venture in accordance with applicable consolidation guidance.  Accordingly, we consolidate the results of Modine OneGene Corporation within the Asia segment.
	We account for investments in non-consolidated affiliated companies in which our ownership is 20 percent or more under the equity method.  We state these investments at cost plus or minus a proportionate share of undistributed net income (loss).  We include Modine’s share of the affiliates’ net income (loss) in other income and expense.  See Note 12 for further discussion.
Discontinued operations	'
	Discontinued operations: Discontinued operations primarily consist of environmental remediation activities at a former manufacturing facility in the Netherlands.  See Note 19 for further discussion.
Assets held for sale	'
	Assets held for sale:  The Company considers assets to be held for sale when management approves and commits to a formal plan to actively market the assets for sale at a price reasonable in relation to its fair value, the asset is available for immediate sale in its present condition, an active program to locate a buyer and other actions required to complete the sale have been initiated, the sale of the asset is probable and expected to be completed within one year and it is unlikely that significant changes will be made to the plan.  Upon designation as held for sale, we record the carrying value of the assets at the lower of its carrying value or its estimated fair value, less cost to sell.  The Company ceases to record depreciation expense at the time of designation as held for sale.
Revenue recognition	'
	Revenue recognition:  We recognize sales revenue, including agreed upon commodity price increases or decreases, when it is both earned and realized or realizable.  It is our policy to recognize revenue when title to the product and risk of loss have transferred to the customer, persuasive evidence of an arrangement exists, and collection of the sales proceeds is reasonably assured, all of which generally occur upon shipment of goods to customers.  We make appropriate provisions for uncollectible accounts based on historical data or specific customer economic data.  We record sales discounts, which are offered for prompt payment by certain customers, as a reduction to net sales.
Tooling costs	'
	Tooling costs:  Modine accounts for production tooling costs as a component of property, plant and equipment when the Company owns title to the tooling and amortizes the capitalized cost to cost of sales over the estimated life of the asset, which is generally three years.  At March 31, 2014 and 2013, Company-owned tooling totaled $28.6 million and $30.5 million, respectively.  In certain instances, the Company makes upfront payments for customer-owned tooling costs, and subsequently receives reimbursement from customers for the upfront payments.  The Company accounts for unbilled customer-owned tooling costs as a receivable within other current assets when the customer has guaranteed reimbursement to the Company.  No significant arrangements exist where customer-owned tooling costs were not accompanied by guaranteed reimbursement.  At March 31, 2014 and 2013, cost reimbursement receivables related to customer-owned tooling totaled $10.3 million and $20.9 million, respectively.
Warranty	'
	Warranty:  Modine provides product warranties for specific product lines and accrues for estimated future warranty costs in the period in which the sale is recorded.  We record warranty expense based upon historical and current claims data or based on estimated future claims.  Accrual balances, which are recorded within other current liabilities, are monitored and adjusted if it is probable that expected claims will differ from previous estimates.  See Note 15 for further discussion.
Shipping and handling costs	'
	Shipping and handling costs:  We record shipping and handling costs incurred upon the shipment of products to our OEM customers in cost of sales, and related amounts billed to these customers in net sales.  We record shipping and handling costs incurred upon the shipment of products to our HVAC customers in selling, general and administrative (“SG&A”) expenses.  For the years ended March 31, 2014, 2013, and 2012, these shipping and handling costs recorded in SG&A expenses were $4.0 million, $4.3 million, and $5.4 million, respectively.
Research and development	'
	Research and development:  We expense research and development costs as incurred within SG&A expenses.  For the years ended March 31, 2014, 2013, and 2012, research and development costs charged to operations totaled $61.7 million, $68.4 million, and $70.2 million, respectively.
Translation of foreign currencies	'
	Translation of foreign currencies:  We translate assets and liabilities of foreign subsidiaries and equity investments into U.S. dollars at the period-end exchange rates, and we translate income and expense items at the monthly average exchange rate for the period in which the transactions occur.  We report resulting translation adjustments within accumulated other comprehensive income (loss) within shareholders' equity.  We include foreign currency transaction gains or losses in the statement of operations within other income and expense.
Derivative instruments	'
	Derivative instruments:  The Company enters into derivative financial instruments from time to time to manage certain financial risks.  The Company enters into futures contracts to reduce exposure to changing future purchase prices for aluminum and copper.  These instruments are used to protect cash flows and are not speculative.  See Note 18 for further discussion.
Income taxes	'
	Income taxes:  We determine deferred tax assets and liabilities based on the difference between the amounts reported in the financial statements and the tax basis of assets and liabilities, using enacted tax rates in effect in the years in which the differences are expected to reverse.  We establish a valuation allowance if it is more likely than not that some portion or all of a deferred tax asset will not be realized.  See Note 8 for further discussion.
Earnings per share	'
	Earnings per share:  We calculate basic earnings per share based on the weighted average number of common shares outstanding during the period, while the calculation of diluted earnings per share includes the dilutive effect of potential common shares outstanding during the period.  The calculation of diluted earnings per share excludes all potential common shares if their inclusion would have an anti-dilutive effect.  Recipients of the Company’s restricted stock awards have non-forfeitable rights to receive any dividends declared by the Company.  Therefore, these restricted stock awards are included in computing earnings per share pursuant to the two-class method.  See Note 9 for further discussion.
Cash and cash equivalents	'
	Cash and cash equivalents: Modine considers all highly liquid investments with original maturities of three months or less to be cash equivalent.  Under Modine’s cash management system, cash balances at certain banks are funded when checks are presented for payment.  To the extent that checks issued, but not yet presented for payment, exceed the balance on hand at the specific bank against which they were written, the amount of those un-presented checks is included in accounts payable.
Deferred compensation trust	'
	Deferred compensation trust:  The Company maintains a deferred compensation trust to fund future obligations under its non-qualified deferred compensation plan.  The trust’s investments in third-party debt and equity securities are reflected as long-term investments in the consolidated balance sheet.
Trade accounts receivable and allowance for doubtful accounts	'
	Trade accounts receivable and allowance for doubtful accounts:  We record trade receivables at the invoiced amount.  Trade receivables do not bear interest if paid according to the original terms.  The allowance for doubtful accounts, $1.1 million and $0.8 million at March 31, 2014 and 2013, respectively, represents estimated uncollectible receivables.  The allowance is based upon historical write-off experience and specific customer economic data.  We review the allowance for doubtful accounts periodically and adjust as necessary.
	We enter into supply chain financing programs from time to time to sell accounts receivable without recourse to third-party financial institutions.  Sales of accounts receivable are reflected as a reduction of accounts receivable on the consolidated balance sheets and the proceeds are included in cash flows from operating activities in the consolidated statements of cash flows.  During the years ended March 31, 2014, 2013, and 2012, the Company sold, without recourse, $82.4 million, $99.1 million, and $113.5 million of accounts receivable to accelerate cash receipts.  During the years ended March 31, 2014, 2013, and 2012, we recorded a loss on the sale of accounts receivables of $0.3 million, $0.3 million, and $0.5 million in the consolidated statements of operations.
Inventories	'
	Inventories: We value inventories at the lower of cost, on a first-in, first-out basis or weighted average basis, or market value.
Property, plant and equipment	'
	Property, plant and equipment:  We state property, plant and equipment at cost.  For financial reporting purposes, we compute depreciation principally using the straight-line method over the expected useful life of the asset.  We charge maintenance and repair costs to operations as incurred.  We capitalize costs of improvements.  Upon the sale or other disposition of an asset, we remove the cost and related accumulated depreciation from the accounts and include the gain or loss in the statement of operations.
Goodwill	'
	Goodwill:  We do not amortize goodwill; rather we test for impairment annually unless conditions exist that would require a more frequent evaluation.  We perform an assessment of the fair value of the Company’s reporting units for our goodwill impairment testing based upon, among other things, the present value of expected future cash flows.  We recognize an impairment loss if the book value of goodwill exceeds the fair value.  We performed our goodwill impairment test as of March 31, 2014, which did not result in an impairment charge.  See Note 14 for further discussion.
Impairment of long-lived assets	'
	Impairment of long-lived assets:  We review long-lived assets, including property, plant and equipment and intangible assets for impairment and write them down to fair value when facts and circumstances indicate that the carrying value of the assets may not be recoverable through estimated future undiscounted cash flows.  If an impairment has occurred, we write-down the asset to its estimated fair value and recognize the impairment loss as a charge against current operations.  We estimate fair value using a variety of valuation techniques, including discounted cash flows, market values and comparison values for similar assets.  We review investments for impairment and write them down to fair value when facts and circumstances indicate that a decline in value is other than temporary.  See Note 6 for further discussion.
Environmental expenditures	'
	Environmental expenditures:  We capitalize environmental expenditures that qualify as property, plant and equipment or substantially increase the economic value or extend the useful life of an asset.  We expense all other expenditures as incurred.  We expense environmental expenditures that relate to an existing condition caused by past operations.  If a loss arising from environmental matters is probable and can be reasonably estimated, we record an accrual for the amount of the estimated loss.  See Note 19 for further discussion.
Self-insurance reserves	'
	Self-insurance reserves:  We retain some of the financial risk for various insurance coverage, including property, general liability, workers compensation, and employee healthcare, and therefore maintain reserves that estimate the impact of unreported and under-reported claims that fall below various stop-loss limits and deductibles under its insurance policies.  We maintain reserves for the estimated settlement cost of known claims, as well as estimates of incurred but not reported claims.  We charge costs of claims, including the impact of changes in reserves due to claim experience and severity, to operations based on claim incurrence.  We review and update the evaluation of insurance claims and the reasonableness of the related liability accruals on a quarterly basis.
Stock-based compensation	'
	Stock-based compensation:  The Company recognizes stock-based compensation using the fair-value method.  Accordingly, compensation cost for stock options, stock awards and restricted stock is calculated based upon the fair value of the instrument at the time of grant, and is recognized as expense over the vesting period of the stock-based instrument.  See Note 5 for further discussion.
Out of period adjustments	'
	Out of period adjustments: During the second quarter of fiscal 2014, the Company recorded a customer pricing adjustment that related to prior fiscal years.  The impact of this error to the second quarter of fiscal 2014 decreased pre-tax earnings by $0.6 million ($0.5 million after-tax).  During the first quarter of fiscal 2013, the Company identified an error related to certain commodity hedges that should have been deemed ineffective in the fourth quarter of fiscal 2012, which overstated pre-tax earnings by $0.5 million in the first quarter of fiscal 2013.  The Company does not believe that the impact of these errors is material to its financial statements for fiscal 2014, 2013, or 2012.
New accounting pronouncements	'
	New accounting pronouncements:  In February 2013, the Financial Accounting Standards Board (“FASB”) issued an accounting standards update that requires entities to present reclassifications by component when reporting changes in accumulated other comprehensive income.  In addition, the Company is required to present, either on the face of the statement where net income is presented or in the notes, certain significant amounts reclassified out of accumulated other comprehensive income within the respective line items of the consolidated statement of operations.  The Company adopted this guidance in the first quarter of fiscal 2014.  See Note 20 for additional information.

Significant_Accounting_Policie2

Significant Accounting Policies (Tables)	12 Months Ended
	Mar. 31, 2014
Significant Accounting Policies [Abstract]	'
Supplemental cash flow information	'
	Supplemental cash flow information:
		Years ended March 31,
		2014		2013		2012
	Interest paid	$	12.6	$	11.6	$	12.8
	Income taxes paid		11.4		12.4		13

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	12 Months Ended
	Mar. 31, 2014
Fair Value Measurements [Abstract]	'
Schedule of fair value of assets and liabilities measured in recurring basis	'
	At March 31, 2014, assets and liabilities recorded at fair value on a recurring basis were as follows:
		Level 1		Level 2		Level 3		Total
	Assets:
	Trading securities	$	2.6	$	-	$	-	$	2.6
	Total assets	$	2.6	$	-	$	-	$	2.6
	Liabilities:
	Derivative financial instruments	$	-	$	0.4	$	-	$	0.4
	Deferred compensation obligations		2.6		-		-		2.6
	Total liabilities	$	2.6	$	0.4	$	-	$	3
	At March 31, 2013, assets and liabilities recorded at fair value on a recurring basis were as follows:
		Level 1		Level 2		Level 3		Total
	Assets:
	Trading securities	$	2.3	$	-	$	-	$	2.3
	Total assets	$	2.3	$	-	$	-	$	2.3
	Liabilities:
	Derivative financial instruments	$	-	$	1.4	$	-	$	1.4
	Deferred compensation obligations		2.3		-		-		2.3
	Total liabilities	$	2.3	$	1.4	$	-	$	3.7
Schedule of U.S. pension plan assets fair value	'
	At March 31, 2014, the U.S. pension plan assets were classified as follows:
		Level 1		Level 2		Level 3		Total
	Money market investments	$	-	$	11.3	$	-	$	11.3
	Common stocks		40.1		2.1		-		42.2
	Corporate bonds		-		21.3		-		21.3
	Pooled equity funds		68.9		11.9		-		80.8
	Pooled fixed income funds		14.1		-		-		14.1
	U.S. government and agency securities		-		37		-		37
	Other		1.6		5.4		-		7
	Total	$	124.7	$	89	$	-	$	213.7
	At March 31, 2013, the U.S. pension plan assets were classified as follows:
		Level 1		Level 2		Level 3		Total
	Money market investments	$	-	$	7.3	$	-	$	7.3
	Common stocks		35.9		0.1		-		36
	Corporate bonds		-		19.1		-		19.1
	Pooled equity funds		68.8		14.1		-		82.9
	Pooled fixed income funds		17.6		-		-		17.6
	U.S. government and agency securities		-		32.1		-		32.1
	Other		1		4.6		-		5.6
	Total	$	123.3	$	77.3	$	-	$	200.6

StockBased_Compensation_Tables

Stock-Based Compensation (Tables)	12 Months Ended
	Mar. 31, 2014
Stock-Based Compensation [Abstract]	'
Assumptions used in determining fair value of options	'
	We estimate the fair value of option awards on the date of grant using the Black-Scholes option valuation model with the following assumptions for stock options granted in fiscal 2014, 2013, and 2012:
		2014			2013			2012
	Weighted average fair value of options	$	7.76		$	4.26		$	10.45
	Expected life of awards in years		6.3			6.3			6.3
	Risk-free interest rate		1.3	%		0.9	%		1.9	%
	Expected volatility of the Company's stock		88.7	%		87.4	%		79.6	%
	Expected dividend yield on the Company's stock		0	%		0	%		0	%
Summary of the stock option activity	'
	A summary of stock option activity for fiscal 2014 was as follows:
		Shares			Weighted average			Weighted average			Aggregate
					exercise price			remaining contractual			intrinsic value
								term (years)
	Outstanding, April 1, 2013		1.7		$	14.03
	Granted		0.2			10.4
	Exercised		(0.2	)		6.71
	Forfeited or expired		(0.1	)		25.37
	Outstanding, March 31, 2014		1.6		$	13.15			5.5		$	7.4
	Exercisable, March 31, 2014		1.3		$	14.15			4.7		$	5.6
Information related to stock options exercised	'
	Additional information related to stock options exercised during fiscal 2014, 2013, and 2012 is as follows:
		2014			2013			2012
	Intrinsic value of stock options exercised	$	1.1		$	0.1		$	0.2
	Proceeds from stock options exercised	$	1.1		$	0.1		$	0.5
Summary of the restricted stock activity	'
	Restricted Stock:  A summary of restricted stock activity for fiscal 2014 is as follows:
		Shares			Weighted
					average
					price
	Non-vested balance, April 1, 2013		0.5		$	6.91
	Granted		0.3			10.95
	Vested		(0.2	)		8.67
	Non-vested balance, March 31, 2014		0.6		$	8.66

Restructuring_and_Impairment_C1

Restructuring and Impairment Charges (Tables)	12 Months Ended
	Mar. 31, 2014
Restructuring and Impairment Charges [Abstract]	'
Restructuring and repositioning expenses	'
	Restructuring and repositioning expenses related to the Europe segment restructuring program were as follows:
		Years ended March 31,
		2014			2013
	Employee severance and related benefits	$	13.7		$	14.9
	Accelerated depreciation		4.3			-
	Other repositioning costs		1.2			2.1
	Total restructuring and repositioning expenses	$	19.2		$	17
Changes in accrued severance	'
	The Company accrues severance in accordance with its written plans, procedures, and relevant statutory requirements. Changes in accrued severance related to the Europe segment restructuring program were as follows:
		Years ended March 31,
		2014			2013
	Beginning balance	$	11.6		$	-
	Additions		13.7			14.9
	Payments		(7.8	)		(3.3	)
	Effect of exchange rate changes		0.8			-
	Ending balance	$	18.3		$	11.6

Other_Income_and_Expense_Table

Other Income and Expense (Tables)	12 Months Ended
	Mar. 31, 2014
Other Income and Expense [Abstract]	'
Other income and expense	'
	Other income and expense consisted of the following:
		Years ended March 31,
		2014			2013			2012
	Equity in earnings (loss) of non-consolidated affiliate	$	0.7		$	0.3		$	(0.1	)
	Interest income		0.5			0.9			0.8
	Foreign currency transactions		(2.0	)		(1.1	)		(7.8	)
	Other non-operating income - net		-			0.1			-
	Total other (expense) income - net	$	(0.8	)	$	0.2		$	(7.1	)

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Mar. 31, 2014
Income Taxes [Abstract]	'
Schedule of components of earnings (loss) from continuing operations before income taxes	'
	The U.S. and foreign components of earnings (loss) from continuing operations before income taxes and the (benefit) provision for income taxes consisted of the following:
			Years ended March 31,
			2014			2013			2012
	Components of earnings (loss) from continuing operations before income taxes:
	United States		$	14.1		$	10.2		$	17.2
	Foreign			9.9			(23.2	)		30.7
	Total earnings (loss) from continuing operations before income taxes		$	24		$	(13.0	)	$	47.9
	Income tax (benefit) expense:
	Federal:
	Current		$	(2.0	)	$	2.6		$	-
	Deferred			(95.8	)		(2.6	)		0.3
	State:
	Current			0.2			0.2			0.3
	Deferred			(21.4	)		(0.2	)		(0.2	)
	Foreign:
	Current			10			6.4			8.3
	Deferred			1.1			3.4			1.2
	Total income tax (benefit) expense		$	(107.9	)	$	9.8		$	9.9
Reconciliation of the federal statutory income tax rate to the company's effective income tax rate	'
	Income tax expense attributable to earnings (loss) from continuing operations before income taxes differed from the amounts computed by applying the statutory U.S. federal income tax rate as a result of the following:
			Years ended March 31,
			2014			2013			2012
	Statutory federal tax			35	%		35	%		35	%
	State taxes, net of federal benefit			2.1			(1.3	)		(0.1	)
	Taxes on non-U.S. earnings and losses			(3.8	)		(23.8	)		(5.7	)
	Valuation allowance			(471.7	)		(59.3	)		2.1
	Tax credits			(7.1	)		37			(19.2	)
	Compensation			0.4			(13.0	)		3.4
	Foreign tax rate or law changes			(9.2	)		0.9			0.6
	Uncertain tax positions net of settlements			0.4			(41.9	)		1.9
	Brazilian interest on equity			(1.7	)		3.2			(1.0	)
	Dividend repatriation			5.8			(11.4	)		4.4
	Other			0.2			(0.8	)		(0.7	)
	Effective tax rate			(449.6	%)		(75.4	%)		20.7	%
Schedule of deferred tax assets and deferred tax liabilities	'
	The tax effects of temporary differences that give rise to deferred tax assets and deferred tax liabilities were as follows:
			March 31,
			2014			2013
	Deferred tax assets:
	Accounts receivable		$	0.2		$	0.4
	Inventories			4.1			4.1
	Plant and equipment			2.4			1.6
	Pension and employee benefits			39.1			48.5
	Net operating loss, capital loss, and credit carryforwards			122.4			117.6
	Other, principally accrued liabilities			10.3			12
	Total gross deferred tax assets			178.5			184.2
	Less: valuation allowance			(61.2	)		(172.8	)
	Net deferred tax assets			117.3			11.4
	Deferred tax liabilities:
	Goodwill			4.2			4.7
	Plant and equipment			7.6			5.6
	Other			1.7			2.9
	Total gross deferred tax liabilities			13.5			13.2
	Net deferred tax asset (liability)		$	103.8		$	(1.8	)
	Deferred tax assets and liabilities are reported in the consolidated balance sheets as follows:
			March 31,
			2014			2013
	Current deferred tax asset		$	13		$	6.6
	Noncurrent deferred tax asset			98.6			0.4
	Current deferred tax liability (other current liabilities)			(0.5	)		(0.2	)
	Noncurrent deferred tax liability			(7.3	)		(8.6	)
	Total		$	103.8		$	(1.8	)
Reconciliation of unrecognized tax benefits	'
	A reconciliation of unrecognized tax benefits is as follows:
			Years ended March 31,
			2014			2013
	Beginning balance		$	9		$	3.3
	Gross increases - tax positions in prior period			2.5			5.6
	Gross decreases - tax positions in prior period			(7.0	)		(0.1	)
	Gross increases - tax positions in current period			0.1			0.6
	Gross decreases - tax positions in current period			-			(0.4	)
	Settlements			(1.9	)		-
	Lapse of statute of limitations			(0.8	)		-
	Effect of exchange rate changes			0.2			-
	Ending balance		$	2.1		$	9
Schedule of tax years subject to examination by the respective major tax jurisdictions	'
	The following tax years remain subject to examination for the Company’s major tax jurisdictions:
	Austria	Fiscal 2012 - 2013
	Brazil	Calendar 2009 - 2013
	Germany	Fiscal 2011 - 2013
	United States	Fiscal 2011 - 2013

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	12 Months Ended
	Mar. 31, 2014
Earnings Per Share [Abstract]	'
Components of basic and diluted earnings per share	'
	The components of basic and diluted earnings per share are as follows:
		Years ended March 31,
		2014			2013			2012
	Basic:
	Earnings (loss) from continuing operations	$	131.9		$	(22.8	)	$	38
	Less: Net earnings attributable to noncontrolling interest		(1.5	)		(1.4	)		(0.3	)
	Less: Undistributed earnings attributable to unvested shares		(1.7	)		-			(0.2	)
	Earnings (loss) from continuing operations available to Modine shareholders		128.7			(24.2	)		37.5
	Earnings from discontinued operations		-			-			0.8
	Net earnings (loss) available to Modine shareholders	$	128.7		$	(24.2	)	$	38.3
	Weighted average shares outstanding - basic		46.9			46.6			46.5
	Basic Earnings Per Share:
	Earnings (loss) per share - continuing operations	$	2.75		$	(0.52	)	$	0.81
	Earnings per share - discontinued operations		-			-			0.02
	Net earnings (loss) per share - basic	$	2.75		$	(0.52	)	$	0.83
	Diluted:
	Earnings (loss) from continuing operations	$	131.9		$	(22.8	)	$	38
	Less: Net earnings attributable to noncontrolling interest		(1.5	)		(1.4	)		(0.3	)
	Less: Undistributed earnings attributable to unvested shares		(0.9	)		-			(0.2	)
	Earnings (loss) from continuing operations available to Modine shareholders		129.5			(24.2	)		37.5
	Earnings from discontinued operations		-			-			0.8
	Net earnings (loss) available to Modine shareholders	$	129.5		$	(24.2	)	$	38.3
	Weighted average shares outstanding - basic		46.9			46.6			46.5
	Effect of dilutive securities		0.7			-			0.4
	Weighted average shares outstanding - diluted		47.6			46.6			46.9
	Diluted Earnings Per Share:
	Earnings (loss) per share - continuing operations	$	2.72		$	(0.52	)	$	0.8
	Earnings per share - discontinued operations		-			-			0.02
	Net earnings (loss) per share - diluted	$	2.72		$	(0.52	)	$	0.82

Inventories_Tables

Inventories (Tables)	12 Months Ended
	Mar. 31, 2014
Inventories [Abstract]	'
Inventories	'
	Inventories consisted of the following:
		March 31,
		2014		2013
	Raw materials and work in process	$	89.2	$	88.1
	Finished goods		27.6		30.7
	Total inventories	$	116.8	$	118.8

Property_Plant_and_Equipment_T

Property, Plant and Equipment (Tables)	12 Months Ended
	Mar. 31, 2014
Property, Plant and Equipment [Abstract]	'
Property, plant and equipment	'
	Property, plant and equipment, including depreciable lives, consisted of the following:
		March 31,
		2014			2013
	Land	$	10.4		$	10
	Buildings and improvements (10-40 years)		228.1			216.7
	Machinery and equipment (3-12 years)		715.1			679.1
	Office equipment (3-10 years)		89.5			95.7
	Construction in progress		35.5			31.6
			1,078.60			1,033.10
	Less: accumulated depreciation		(719.0	)		(677.2	)
	Net property, plant and equipment	$	359.6		$	355.9

Intangible_Assets_Tables

Intangible Assets (Tables)	12 Months Ended
	Mar. 31, 2014
Intangible Assets [Abstract]	'
Schedule of intangible assets	'
	Intangible assets consisted of the following:
		31-Mar-14							31-Mar-13
		Gross					Net		Gross					Net
		Carrying		Accumulated			Intangible		Carrying		Accumulated			Intangible
		Value		Amortization			Assets		Value		Amortization			Assets
	Tradenames	$	10.1	$	(5.7	)	$	4.4	$	9.6	$	(4.7	)	$	4.9
	Acquired technology		5.8		(0.2	)		5.6		3.5		(0.1	)		3.4
	Customer relationships		2.4		-			2.4		-		-			-
	Total intangible assets	$	18.3	$	(5.9	)	$	12.4	$	13.1	$	(4.8	)	$	8.3
Total estimated annual amortization expense	'
	Amortization expense for the years ended March 31, 2014, 2013, and 2012 was $0.8 million, $0.7 million and $0.6 million, respectively.  Estimated future amortization expense is as follows:
	Fiscal Year	Estimated
		Amortization
		Expense
	2015	$	1.6
	2016		1.7
	2017		1.7
	2018		1.7
	2019		1.6
	2020 & Beyond		4.1

Goodwill_Tables

Goodwill (Tables)	12 Months Ended
	Mar. 31, 2014
Goodwill [Abstract]	'
Schedule of changes in the carrying amount of goodwill	'
	Changes in the carrying amount of goodwill, by segment and in the aggregate, were as follows:
				South			Commercial
		Asia		America			Products			Total
	Balance, March 31, 2012	$	0.5	$	13.5		$	15.9		$	29.9
	Acquisition		-		-			0.8			0.8
	Effect of exchange rate changes		-		(1.3	)		(0.7	)		(2.0	)
	Balance, March 31, 2013		0.5		12.2			16			28.7
	Effect of exchange rate changes		-		(1.3	)		1.3			-
	Balance, March 31, 2014	$	0.5	$	10.9		$	17.3		$	28.7

Product_Warranties_Operating_L1

Product Warranties, Operating Leases and Other Commitments (Tables)	12 Months Ended
	Mar. 31, 2014
Product Warranties, Operating Leases and Other Commitments [Abstract]	'
Changes in accrued warranty costs	'
	Changes in accrued warranty costs were as follows:
		Years ended March 31,
		2014			2013
	Beginning balance	$	12.6		$	11.4
	Accruals for warranties issued		6			4.9
	Accruals related to pre-existing warranties		8.3			2.7
	Settlements		(13.0	)		(6.1	)
	Effect of exchange rate changes		0.1			(0.3	)
	Ending balance	$	14		$	12.6
Schedule of future minimum rental commitments under non-cancelable operating leases	'
	Future minimum rental commitments at March 31, 2014 under non-cancelable operating leases are as follows:
	Fiscal Year
	2015	$	7.9
	2016		5.6
	2017		4.1
	2018		2.6
	2019		1.8
	2020 and beyond		5.4
	Total future minimum rental commitments	$	27.4

Indebtedness_Tables

Indebtedness (Tables)	12 Months Ended
	Mar. 31, 2014
Indebtedness [Abstract]	'
Schedule of long-term indebtedness	'
	Long-term debt was comprised of the following:
		Fiscal year		31-Mar-14			31-Mar-13
		of maturity
	Foreign credit agreements	2016		$	0.5		$	1.9
	6.8% notes	2017-2021			125			125
	Revolving credit facility	2018			-			-
					125.5			126.9
	Capital lease obligations	2015-2030			6.5			6.1
					132			133
	Less: current portion				(0.8	)		(0.5	)
	Total long-term debt			$	131.2		$	132.5
Maturities of long term debt and capital lease obligations	'
	Long-term debt matures as follows:
	Fiscal Year
	2015	$	0.8
	2016		0.5
	2017		8.3
	2018		16.3
	2019		16.4
	2020 & beyond		89.7
	Total	$	132

Pension_and_Employee_Benefit_P1

Pension and Employee Benefit Plans (Tables)	12 Months Ended
	Mar. 31, 2014
Pension and Employee Benefit Plans [Abstract]	'
Change in benefit obligations and plan assets as well as the funded status	'
	The change in benefit obligations and plan assets as well as the funded status of Modine's pension and postretirement plans for the fiscal years ended March 31, 2014 and 2013 were as follows:
		Pension Plans						Postretirement Plans
		2014			2013			2014			2013
	Change in benefit obligation:
	Benefit obligation at beginning of year	$	309.6		$	281.8		$	7.5		$	7.2
	Service cost		0.6			0.6			0.1			0.1
	Interest cost		13			13.5			0.2			0.3
	Actuarial (gain) loss		(10.8	)		27.1			(1.4	)		0.1
	Benefits paid		(18.6	)		(12.6	)		(0.5	)		(0.2	)
	Effect of exchange rate changes		1.9			(0.8	)		-			-
	Benefit obligation at end of year	$	295.7		$	309.6		$	5.9		$	7.5
	Change in plan assets:
	Fair value of plan assets at beginning of year	$	200.6		$	186.6		$	-		$	-
	Actual return on plan assets		22.2			16.2			-			-
	Benefits paid		(18.6	)		(12.6	)		(0.5	)		(0.2	)
	Employer contributions		9.5			10.4			0.5			0.2
	Fair value of plan assets at end of year	$	213.7		$	200.6		$	-		$	-
	Funded status at end of year	$	(82.0	)	$	(109.0	)	$	(5.9	)	$	(7.5	)
	Amounts recognized in the consolidated balance sheets:
	Current liability	$	(1.0	)	$	(1.0	)	$	(0.5	)	$	(0.8	)
	Noncurrent liability		(81.0	)		(108.0	)		(5.4	)		(6.7	)
		$	(82.0	)	$	(109.0	)	$	(5.9	)	$	(7.5	)
	Amounts recognized in accumulated other comprehensive loss:
	Net actuarial loss (gain)	$	153.4		$	176.4		$	(1.7	)	$	(0.3	)
	Prior service credit		-			-			(0.2	)		(1.5	)
		$	153.4		$	176.4		$	(1.9	)	$	(1.8	)
Pension and postretirement benefit plans	'
	Costs for Modine’s pension and postretirement benefit plans include the following components for the fiscal years ended March 31, 2014, 2013, and 2012:
		Pension Plans									Postretirement Plans
		2014			2013			2012			2014			2013			2012
	Components of net periodic benefit costs:
	Service cost	$	0.6		$	0.6		$	1.4		$	0.1		$	0.1		$	-
	Interest cost		13			13.5			13.9			0.2			0.3			0.4
	Expected return on plan assets		(15.7	)		(16.1	)		(15.7	)		-			-			-
	Amortization of:
	Unrecognized net loss (gain)		6.3			5			7			(0.1	)		-			-
	Unrecognized prior service credit		-			-			-			(1.2	)		(1.5	)		(1.7	)
	Adjustment for curtailment		-			-			-			-			-			(0.3	)
	Net periodic benefit cost (income)	$	4.2		$	3		$	6.6		$	(1.0	)	$	(1.1	)	$	(1.6	)
	Other changes in plan assets and benefit obligation recognized in other comprehensive (income) loss:
	Net actuarial (gain) loss	$	(17.3	)	$	27		$	45.7		$	(1.4	)	$	-		$	0.7
	Prior service costs		-			-			-			-			-			0.3
	Reversal of amortization items:
	Net actuarial (gain) loss		(6.3	)		(5.0	)		(7.0	)		0.1			0.1			-
	Prior service costs		-			-			-			1.2			1.5			1.7
	Total recognized in other comprehensive (income) loss	$	(23.6	)	$	22		$	38.7		$	(0.1	)	$	1.6		$	2.7
Weighted-average assumptions used to determine benefit obligation and costs under the plans	'
	The weighted average assumptions used to determine Modine’s benefit obligation under the plans were as follows:
		2014						2013
		U.S. Plans			Foreign Plans			U.S. Plans			Foreign Plans
	Pension plans:
	Discount rate		4.7	%		3	%		4.4	%		3.5	%
	Postretirement plans:
	Discount rate		4.3	%		N/	A		3.7	%		N/	A
	The weighted average assumptions used to determine Modine's costs under the plans were as follows:
		Years ended March 31,
		2014						2013						2012
		U.S. Plans			Foreign Plans			U.S. Plans			Foreign Plans			U.S. Plans			Foreign Plans
	Pension plans:
	Discount rate		4.4	%		3.5	%		4.9	%		5	%		5.8	%		5.8	%
	Expected return on plan assets		8	%		N/	A		8	%		N/	A		8	%		N/	A
	Postretirement plans:
	Discount rate		3.7	%		N/	A		4.4	%		N/	A		5.4	%		N/	A
Target and plan asset allocations	'
	Plan assets in the U.S. defined benefit plans comprise 100 percent of the Company’s world-wide benefit plan assets.  Modine's U.S. pension plan weighted average asset allocations at the measurement dates of March 31, 2014 and 2013 were as follows:
		Target allocation			Plan assets
					2014			2013
	Equity securities		55	%		57	%		57	%
	Debt securities		38	%		37	%		37	%
	Alternative assets		5	%		5	%		5	%
	Cash		2	%		1	%		1	%
			100	%		100	%		100	%
Assumed healthcare cost trend rates	'
	With respect to the postretirement plans, for measurement purposes, the assumed healthcare cost trend rates were as follows:
		Years ended March 31,
		2014			2013
	Healthcare costs trend rate		7.3	%		7.5	%
	Ultimate trend rate		5	%		5	%
	Year the rate reaches the ultimate trend rate		2019			2019
Estimated future benefit payments	'
	Estimated pension benefit payments for the next ten fiscal years are as follows:
	Fiscal Year	Estimated pension
		benefit payments
	2015	$	15.6
	2016		15.7
	2017		16.2
	2018		17.6
	2019		18
	2020-2024		95.3

Derivative_Instruments_Tables

Derivative Instruments (Tables)	12 Months Ended
	Mar. 31, 2014
Derivative Instruments [Abstract]	'
Fair value of derivative financial instruments recorded in the consolidated balance sheets	'
	The fair value of the Company’s derivative financial instruments recorded in the consolidated balance sheets were as follows:
		Balance Sheet Location		31-Mar-14			31-Mar-13
	Derivative instruments:
	Foreign exchange contracts	Other current liabilities		$	0.2		$	0.1
	Commodity derivatives	Other current liabilities			0.1			1.2
	Commodity derivatives	Other noncurrent liabilities			0.1			0.1
Amounts recorded in AOCI and in consolidated statement of operations	'
	The amounts recorded in AOCI and in the consolidated statements of operations for all of the Company’s derivative financial instruments were as follows:
			31-Mar-14
			Amount of Loss			Statement of	Loss Reclassified from		Total Loss Recognized in
			Recognized in			Operations Location	AOCI into Continuing		Continuing Operations
			AOCI				Operations
	Commodity derivatives		$	-		Cost of sales	$	0.5	$	0.5
	Total		$	-			$	0.5	$	0.5
			31-Mar-13
			Amount of Loss			Statement of	Loss Reclassified from		Total Loss (Gain)
			Recognized in			Operations Location	AOCI into Continuing		Recognized in Continuing
			AOCI				Operations		Operations
	Commodity derivatives		$	0.5		Cost of sales	$	2.6	$	4.6
	Foreign exchange contracts			-		Other expense - net		-		(0.3	)
	Total		$	0.5			$	2.6	$	4.3
			31-Mar-12
			Amount of Loss			Statement of	Loss Reclassified from		Total Loss Recognized in
			Recognized in			Operations Location	AOCI into Continuing		Continuing Operations
			AOCI				Operations
	Commodity derivatives		$	3.1		Cost of sales	$	3.1	$	3
	Foreign exchange contracts			-		Other expense - net		-		0.4
	Total		$	3.1			$	3.1	$	3.4

Accumulated_Other_Comprehensiv1

Accumulated Other Comprehensive Loss (Tables)	12 Months Ended
	Mar. 31, 2014
Accumulated Other Comprehensive Loss [Abstract]	'
Components of accumulated other comprehensive loss	'
	Changes in accumulated other comprehensive loss were as follows:
			Foreign		Cash Flow			Defined			Total
			Currency		Hedges			Benefit Plans
			Translation
	Balance, March 31, 2013		$	17.8	$	(1.1	)	$	(145.1	)	$	(128.4	)
	Other comprehensive income before reclassifications			9.5		-			18.7			28.2
	Reclassifications:
	Amortization of unrecognized net loss (a)			-		-			6.2			6.2
	Amortization of unrecognized prior service credit (a)			-		-			(1.2	)		(1.2	)
	Commodity derivatives (b)			-		0.5			-			0.5
	Tax benefit (expense)			-		0.6			(9.8	)		(9.2	)
	Total other comprehensive income			9.5		1.1			13.9			24.5
	Balance, March 31, 2014		$	27.3	$	-		$	(131.2	)	$	(103.9	)
		(a)	Amounts are included in the calculation of net periodic benefit cost.  See Note 17 for additional information.
		(b)	Reclassifications for commodity derivatives are included in cost of sales.

Segment_and_Geographic_Informa1

Segment and Geographic Information (Tables)	12 Months Ended
	Mar. 31, 2014
Segment and Geographic Information [Abstract]	'
Net sales, gross profit, operating income and total assets by segment	'
	The following is a summary of net sales, gross profit, and operating income by segment:
			Years ended March 31,
	Net sales:		2014			2013			2012
	North America		$	568.7		$	564.5		$	602
	Europe			584.4			498			602.8
	South America			122.7			133.8			175.6
	Asia			71.5			59.5			84.1
	Commercial Products			146.5			139.3			142.2
	Segment total			1,493.80			1,395.10			1,606.70
	Corporate and eliminations			(16.2	)		(19.1	)		(29.5	)
	Net sales		$	1,477.60		$	1,376.00		$	1,577.20
			Years ended March 31,
			2014						2013						2012
	Gross profit:		$'s			% of sales			$'s			% of sales			$'s		% of sales
	North America		$	93.5			16.4	%	$	81.4			14.4	%	$	89.7		14.9	%
	Europe			70.8			12.1	%		61			12.3	%		85.1		14.1	%
	South America			20.8			16.9	%		22.5			16.8	%		30.9		17.6	%
	Asia			8.9			12.5	%		1.7			2.8	%		7.9		9.4	%
	Commercial Products			43.4			29.6	%		40.8			29.3	%		42.5		29.9	%
	Segment total			237.4			15.9	%		207.4			14.9	%		256.1		15.9	%
	Corporate and eliminations			0.8			-			1.2			-			0.5		-
	Gross profit		$	238.2			16.1	%	$	208.6			15.2	%	$	256.6		16.3	%
			Years ended March 31,
	Operating income:		2014			2013			2012
	North America		$	42.1		$	39.2		$	47.9
	Europe (a)			9.6			(25.4	)		26.3
	South America			7.5			11.2			10.4
	Asia			(3.3	)		(8.8	)		(2.5	)
	Commercial Products			9.4			10			14.3
	Segment total			65.3			26.2			96.4
	Corporate and eliminations (a)			(28.1	)		(26.8	)		(28.9	)
	Operating income (loss)		$	37.2		$	(0.6	)	$	67.5
		(a)	Segment operating income for fiscal 2013 and 2012 has been recast to conform to the fiscal 2014 presentation. The Company has modified its internal financial reporting of intercompany charges for research and development and intercompany royalties between Corporate and the Europe segment, which totaled $9.3 million and $11.0 million for fiscal years 2013 and 2012, respectively.  There was no impact on the total Company consolidated financial results.
	Following is a summary of assets by segment:
			March 31,
	Total assets:		2014			2013
	North America		$	218.1		$	218.3
	Europe			367.9			332.2
	South America			80.1			91.8
	Asia			92.8			91.3
	Commercial Products (a)			132.7			73.7
	Corporate and eliminations (b)			140.7			11.5
	Total assets		$	1,032.30		$	818.8
		(a)	Total assets within the Commercial Products segment included receivables and cash advances from the Company’s insurance provider and reconstruction costs paid to date related to the Airedale fire, which totaled $45.0 million as of March 31, 2014.  See Note 2 for additional information.
		(b)	The increase in total assets within corporate and eliminations was primarily due to a $119.2 million reversal of deferred tax asset valuation allowances in the U.S. as of March 31, 2014.  See Note 8 for additional information.
Summary of capital expenditures and depreciation and amortization expense by segment	'
	Following is a summary of capital expenditures and depreciation and amortization expense by segment:
			Years ended March 31,
	Capital expenditures:		2014			2013			2012
	North America		$	18.9		$	19		$	15.2
	Europe			22.9			16.5			29.8
	South America			5.7			3.4			5.2
	Asia			4.6			7.8			12.5
	Commercial Products			1			3.1			1.7
	Total capital expenditures		$	53.1		$	49.8		$	64.4
			Years ended March 31,
	Depreciation and amortization expense:		2014			2013			2012
	North America		$	19.3		$	20.1		$	20
	Europe			26.6			23.4			26.5
	South America			3.3			3.7			4.1
	Asia			6.7			6.4			5
	Commercial Products			2.2			2.2			2.1
	Total depreciation and amortization expense		$	58.1		$	55.8		$	57.7
Summary of net sales and long-lived assets by geographical area	'
	Following is a summary of capital expenditures and depreciation and amortization expense by segment:
			Years ended March 31,
	Capital expenditures:		2014			2013			2012
	North America		$	18.9		$	19		$	15.2
	Europe			22.9			16.5			29.8
	South America			5.7			3.4			5.2
	Asia			4.6			7.8			12.5
	Commercial Products			1			3.1			1.7
	Total capital expenditures		$	53.1		$	49.8		$	64.4
			Years ended March 31,
	Depreciation and amortization expense:		2014			2013			2012
	North America		$	19.3		$	20.1		$	20
	Europe			26.6			23.4			26.5
	South America			3.3			3.7			4.1
	Asia			6.7			6.4			5
	Commercial Products			2.2			2.2			2.1
	Total depreciation and amortization expense		$	58.1		$	55.8		$	57.7
	Following is a summary of net sales by geographical area, based upon the location of the selling unit:
			Years ended March 31,
	Net sales by country:		2014			2013			2012
	United States		$	645.7		$	637.4		$	666.2
	Germany			229.5			214.8			285.9
	Brazil			122			128.8			169.1
	Hungary			150.3			117.6			149.1
	Other			330.1			277.4			306.9
	Net sales		$	1,477.60		$	1,376.00		$	1,577.20
	Following is a summary of long-lived assets, excluding goodwill, intangible assets, and deferred tax assets, by geographical area:
			March 31,
	Long-lived assets:		2014			2013
	United States		$	112.9		$	115.1
	Germany			94.6			94.3
	Other			186.3			173.4
	Long-lived assets		$	393.8		$	382.8
Summary of net sales by product type	'
	Following is a summary of net sales by product type:
			Years ended March 31,
	Net sales by product type:		2014			2013			2012
	Modules/assemblies		$	379.9		$	358.5		$	410.4
	Oil coolers			215.4			194.1			249.4
	EGR coolers			172.5			136.1			152.7
	Building HVAC			159.5			151.8			153.3
	Charge air coolers			157			161.8			173.9
	Condensers			129.2			128.8			101.5
	Radiators			129			134.4			191.4
	Other			135.1			110.5			144.6
	Net sales		$	1,477.60		$	1,376.00		$	1,577.20

Quarterly_Financial_Data_Unaud1

Quarterly Financial Data (Unaudited) (Tables)	12 Months Ended
	Mar. 31, 2014
Quarterly Financial Data (Unaudited) [Abstract]	'
Summary of quarterly financial data	'
	Quarterly financial data is summarized below for the years ended March 31, 2014 and 2013:
			Fiscal 2014 quarters ended
			June			Sept.			Dec.			March			Fiscal 2014
	Net sales		$	375.8		$	364.2		$	347		$	390.6		$	1,477.60
	Gross profit			61.9			57.2			56.8			62.3			238.2
	Earnings (loss) from continuing operations (a)(b)			10.6			5			(3.4	)		119.7			131.9
	Net earnings (loss) attributable to Modine (a)(b)			10			4.6			(3.6	)		119.4			130.4
	Net earnings (loss) per share attributable to Modine shareholders:
	Basic		$	0.21		$	0.1		$	(0.08	)	$	2.51		$	2.75
	Diluted			0.21			0.1			(0.08	)		2.49			2.72
			Fiscal 2013 quarters ended
			June			Sept.			Dec.			March			Fiscal 2013
	Net sales		$	350.4		$	339.9		$	326.1		$	359.6		$	1,376.00
	Gross profit			51.7			52.6			48.2			56.1			208.6
	Loss from continuing operations (a)			(1.0	)		(11.8	)		(8.4	)		(1.6	)		(22.8	)
	Net loss attributable to Modine (a)			(1.2	)		(12.2	)		(8.7	)		(2.1	)		(24.2	)
	Net loss per share attributable to Modine shareholders:
	Basic		$	(0.03	)	$	(0.26	)	$	(0.19	)	$	(0.04	)	$	(0.52	)
	Diluted			(0.03	)		(0.26	)		(0.19	)		(0.04	)		(0.52	)
		(a)	The quarterly financial data presented above includes restructuring expenses and impairment charges, primarily related to our Europe restructuring program and certain restructuring actions in the U.S.  During fiscal 2014, restructuring expenses totaled $0.5 million, $0.6 million, $9.4 million, and $5.6 million for the quarters ended June 30, 2013, September 30, 2013, December 31, 2013, and March 31, 2014, respectively. The Company recorded impairment charges of $2.0 million and $1.2 million during the quarters ended December 31, 2013 and March 31, 2014, respectively.  During fiscal 2013, restructuring expenses totaled $4.6 million, $1.3 million, $1.4 million, and $9.7 million for the quarters ended June 30, 2012, September 30, 2012, December 31, 2012, and March 31, 2013, respectively.  The Company recorded impairment charges of $16.7 million, $8.3 million, and $0.9 million during the quarters ended September 30, 2012, December 31, 2012, and March 31, 2013, respectively.  See Note 6 for additional information.
		(b)	The quarter ended March 31, 2014 was benefited by the reversal of U.S. income tax valuation allowances totaling $119.2 million.  See Note 8 for additional information.

Significant_Accounting_Policie3

Significant Accounting Policies (Details)	12 Months Ended				3 Months Ended		12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2012	Sep. 30, 2013	Jun. 30, 2012	Mar. 31, 2014	Mar. 31, 2013
	USD ($)	USD ($)	USD ($)	KRW	Error Correction [Member]	Error Correction [Member]	Tools [Member]	Tools [Member]
					USD ($)	USD ($)	USD ($)	USD ($)
Consolidation principles [Abstract]	'	'	'	'	'	'	'	'
Capital contributions	'	'	$0.90	1,000	'	'	'	'
Investments in non-consolidated affiliated companies (in hundredths)	20.00%	'	'	'	'	'	'	'
Tooling [Abstract]	'	'	'	'	'	'	'	'
Property, plant and equipment, depreciable lives	'	'	'	'	'	'	'3 years	'
Company-owned tooling, net	'	'	'	'	'	'	28.6	30.5
Customer owned tooling receivable	'	'	'	'	'	'	10.3	20.9
Shipping and handling costs [Abstract]	'	'	'	'	'	'	'	'
Shipping and handling costs	4	4.3	5.4	'	'	'	'	'
Research and development [Abstract]	'	'	'	'	'	'	'	'
Research and development cost	61.7	68.4	70.2	'	'	'	'	'
Trade receivables and allowance for doubtful accounts [Abstract]	'	'	'	'	'	'	'	'
Trade receivables, allowance for doubtful accounts	1.1	0.8	'	'	'	'	'	'
Trade receivables sold without recourse	82.4	99.1	113.5	'	'	'	'	'
Loss on the sale of accounts receivables	0.3	0.3	0.5	'	'	'	'	'
Out of period adjustment [Abstract]	'	'	'	'	'	'	'	'
Pre-tax earnings	'	'	'	'	-0.6	0.5	'	'
After-tax earnings	'	'	'	'	-0.5	'	'	'
Cash paid during the year for:	'	'	'	'	'	'	'	'
Interest paid	12.6	11.6	12.8	'	'	'	'	'
Income taxes paid	$11.40	$12.40	$13	'	'	'	'	'

Airedale_Facility_Fire_Details

Airedale Facility Fire (Details) (Loss by Fire [Member], USD $)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014
Loss by Fire [Member]	'
Unusual or Infrequent Item [Line Items]	'
Costs not covered by insurance	$1
Advance received from insurance provider	37.6
Inventory write off	4.7
Equipment write off	1.4
Other costs attributable to fire	11.9
Aggregate losses and costs	18
Company paid reconstruction costs	1
Estimated total cost of reconstruction	45
Liability to rebuild damaged facility	45
Current liability to rebuild damaged facility	37
Noncurrent liability to rebuild damaged facility	8
Insurance receivable	25.4
Insurance receivable current	18.4
Insurance receivable noncurrent	$7

Acquisitions_Details

Acquisitions (Details) (USD $)	12 Months Ended							3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013	Sep. 30, 2012
				South America [Member]	Geofinity Manufacturing of Surrey, British Columbia [Member]	Barkell Limited of Consett, United Kingdom [Member]	Radiadores Visconde Ltda [Member]	Radiadores Visconde Ltda [Member]
								South America [Member]
Business Acquisition [Line Items]	'	'	'	'	'	'	'	'
Purchase price allocation resulted in property, plant and equipment	'	'	'	'	'	$2	'	'
Cash consideration, net of cash acquired	7.8	4.9	0	'	4.9	7.8	'	'
Purchase price allocation resulted in acquired intangible assets	'	'	'	'	3.5	4.7	'	'
Purchase price allocation, working capital net assets	'	'	'	'	0.6	1.1	'	'
Purchase price allocation, goodwill	'	0.8	'	0	0.8	'	'	'
Intangible assets, amortization period	'	'	'	'	'10 years	'10 years	'	'
Percentage of interests acquired (in hundredths)	'	'	'	'	'	100.00%	50.00%	'
Notes payable	'	'	'	'	'	'	2	'
Selling, general and administrative expense, decrease	'	'	'	'	'	'	'	$2

Fair_Value_Measurements_Detail

Fair Value Measurements (Details) (USD $)	Mar. 31, 2014	Mar. 31, 2013
In Millions, unless otherwise specified
Assets Held For Sale [Abstract]	'	'
Carrying value of assets held-for-sale	$11.60	$11.40
U.S. Pension Plans [Member]	'	'
U.S. pension plan assets [Abstract]	'	'
Fair value of plan assets	213.7	200.6
Money Market Investments [Member] | U.S. Pension Plans [Member]	'	'
U.S. pension plan assets [Abstract]	'	'
Fair value of plan assets	11.3	7.3
Common Stock [Member] | U.S. Pension Plans [Member]	'	'
U.S. pension plan assets [Abstract]	'	'
Fair value of plan assets	42.2	36
Corporate Bonds [Member] | U.S. Pension Plans [Member]	'	'
U.S. pension plan assets [Abstract]	'	'
Fair value of plan assets	21.3	19.1
Pooled Equity Funds [Member] | U.S. Pension Plans [Member]	'	'
U.S. pension plan assets [Abstract]	'	'
Fair value of plan assets	80.8	82.9
Pooled Fixed Income Funds [Member] | U.S. Pension Plans [Member]	'	'
U.S. pension plan assets [Abstract]	'	'
Fair value of plan assets	14.1	17.6
US Government and Agency Securities [Member] | U.S. Pension Plans [Member]	'	'
U.S. pension plan assets [Abstract]	'	'
Fair value of plan assets	37	32.1
Other [Member] | U.S. Pension Plans [Member]	'	'
U.S. pension plan assets [Abstract]	'	'
Fair value of plan assets	7	5.6
Level 1 [Member] | U.S. Pension Plans [Member]	'	'
U.S. pension plan assets [Abstract]	'	'
Fair value of plan assets	124.7	123.3
Level 1 [Member] | Money Market Investments [Member] | U.S. Pension Plans [Member]	'	'
U.S. pension plan assets [Abstract]	'	'
Fair value of plan assets	0	0
Level 1 [Member] | Common Stock [Member] | U.S. Pension Plans [Member]	'	'
U.S. pension plan assets [Abstract]	'	'
Fair value of plan assets	40.1	35.9
Level 1 [Member] | Corporate Bonds [Member] | U.S. Pension Plans [Member]	'	'
U.S. pension plan assets [Abstract]	'	'
Fair value of plan assets	0	0
Level 1 [Member] | Pooled Equity Funds [Member] | U.S. Pension Plans [Member]	'	'
U.S. pension plan assets [Abstract]	'	'
Fair value of plan assets	68.9	68.8
Level 1 [Member] | Pooled Fixed Income Funds [Member] | U.S. Pension Plans [Member]	'	'
U.S. pension plan assets [Abstract]	'	'
Fair value of plan assets	14.1	17.6
Level 1 [Member] | US Government and Agency Securities [Member] | U.S. Pension Plans [Member]	'	'
U.S. pension plan assets [Abstract]	'	'
Fair value of plan assets	0	0
Level 1 [Member] | Other [Member] | U.S. Pension Plans [Member]	'	'
U.S. pension plan assets [Abstract]	'	'
Fair value of plan assets	1.6	1
Level 2 [Member] | U.S. Pension Plans [Member]	'	'
U.S. pension plan assets [Abstract]	'	'
Fair value of plan assets	89	77.3
Level 2 [Member] | Money Market Investments [Member] | U.S. Pension Plans [Member]	'	'
U.S. pension plan assets [Abstract]	'	'
Fair value of plan assets	11.3	7.3
Level 2 [Member] | Common Stock [Member] | U.S. Pension Plans [Member]	'	'
U.S. pension plan assets [Abstract]	'	'
Fair value of plan assets	2.1	0.1
Level 2 [Member] | Corporate Bonds [Member] | U.S. Pension Plans [Member]	'	'
U.S. pension plan assets [Abstract]	'	'
Fair value of plan assets	21.3	19.1
Level 2 [Member] | Pooled Equity Funds [Member] | U.S. Pension Plans [Member]	'	'
U.S. pension plan assets [Abstract]	'	'
Fair value of plan assets	11.9	14.1
Level 2 [Member] | Pooled Fixed Income Funds [Member] | U.S. Pension Plans [Member]	'	'
U.S. pension plan assets [Abstract]	'	'
Fair value of plan assets	0	0
Level 2 [Member] | US Government and Agency Securities [Member] | U.S. Pension Plans [Member]	'	'
U.S. pension plan assets [Abstract]	'	'
Fair value of plan assets	37	32.1
Level 2 [Member] | Other [Member] | U.S. Pension Plans [Member]	'	'
U.S. pension plan assets [Abstract]	'	'
Fair value of plan assets	5.4	4.6
Level 3 [Member] | U.S. Pension Plans [Member]	'	'
U.S. pension plan assets [Abstract]	'	'
Fair value of plan assets	0	0
Level 3 [Member] | Money Market Investments [Member] | U.S. Pension Plans [Member]	'	'
U.S. pension plan assets [Abstract]	'	'
Fair value of plan assets	0	0
Level 3 [Member] | Common Stock [Member] | U.S. Pension Plans [Member]	'	'
U.S. pension plan assets [Abstract]	'	'
Fair value of plan assets	0	0
Level 3 [Member] | Corporate Bonds [Member] | U.S. Pension Plans [Member]	'	'
U.S. pension plan assets [Abstract]	'	'
Fair value of plan assets	0	0
Level 3 [Member] | Pooled Equity Funds [Member] | U.S. Pension Plans [Member]	'	'
U.S. pension plan assets [Abstract]	'	'
Fair value of plan assets	0	0
Level 3 [Member] | Pooled Fixed Income Funds [Member] | U.S. Pension Plans [Member]	'	'
U.S. pension plan assets [Abstract]	'	'
Fair value of plan assets	0	0
Level 3 [Member] | US Government and Agency Securities [Member] | U.S. Pension Plans [Member]	'	'
U.S. pension plan assets [Abstract]	'	'
Fair value of plan assets	0	0
Level 3 [Member] | Other [Member] | U.S. Pension Plans [Member]	'	'
U.S. pension plan assets [Abstract]	'	'
Fair value of plan assets	0	0
Fair Value, Measurements, Recurring [Member]	'	'
Assets [Abstract]	'	'
Trading securities	2.6	2.3
Total assets	2.6	2.3
Liabilities [Abstract]	'	'
Derivative financial instruments	0.4	1.4
Deferred compensation obligations	2.6	2.3
Total liabilities	3	3.7
Fair Value, Measurements, Recurring [Member] | Level 1 [Member]	'	'
Assets [Abstract]	'	'
Trading securities	2.6	2.3
Total assets	2.6	2.3
Liabilities [Abstract]	'	'
Derivative financial instruments	0	0
Deferred compensation obligations	2.6	2.3
Total liabilities	2.6	2.3
Fair Value, Measurements, Recurring [Member] | Level 2 [Member]	'	'
Assets [Abstract]	'	'
Trading securities	0	0
Total assets	0	0
Liabilities [Abstract]	'	'
Derivative financial instruments	0.4	1.4
Deferred compensation obligations	0	0
Total liabilities	0.4	1.4
Fair Value, Measurements, Recurring [Member] | Level 3 [Member]	'	'
Assets [Abstract]	'	'
Trading securities	0	0
Total assets	0	0
Liabilities [Abstract]	'	'
Derivative financial instruments	0	0
Deferred compensation obligations	0	0
Total liabilities	$0	$0

StockBased_Compensation_Detail

Stock-Based Compensation (Details) (USD $)	12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Compensation Expense [Abstract]	'	'	'
Stock-based compensation cost	$3.60	$3.10	$1.60
Stock Options [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Stock option term	'10 years	'	'
Assumptions for stock options granted [Abstract]	'	'	'
Weighted average fair value of options (in dollars per share)	$7.76	$4.26	$10.45
Expected life of awards in years	'6 years 3 months 18 days	'6 years 3 months 18 days	'6 years 3 months 18 days
Risk-free interest rate (in hundredths)	1.30%	0.90%	1.90%
Expected volatility of the Company's stock (in hundredths)	88.70%	87.40%	79.60%
Expected dividend yield on the Company's stock (in hundredths)	0.00%	0.00%	0.00%
Vesting percentage at grant date (in hundredths)	25.00%	'	'
Annual vesting percentage (in hundredths)	25.00%	'	'
Pre-vesting forfeiture rate (in hundredths)	2.50%	'	'
Compensation Expense [Abstract]	'	'	'
Stock-based compensation cost	0.8	1.1	1.3
Total fair value of stock options vesting	0.8	'	'
Unrecognized compensation costs	1.3	'	'
Weighted average period recognized	'2 years 7 months 6 days	'	'
Shares [Rollforward]	'	'	'
Outstanding, April 1 (in shares)	1.7	'	'
Granted (in shares)	0.2	'	'
Exercised (in shares)	-0.2	'	'
Forfeited or expired (in shares)	-0.1	'	'
Outstanding, March 31 (in shares)	1.6	1.7	'
Exercisable, March 31 (in shares)	1.3	'	'
Weighted average exercise price [Rollforward]	'	'	'
Outstanding, April 1 (in dollars per share)	$14.03	'	'
Granted (in dollars per share)	$10.40	'	'
Exercised (in dollars per share)	$6.71	'	'
Forfeited or expired (in dollars per share)	$25.37	'	'
Outstanding, March 31 (in dollars per share)	$13.15	$14.03	'
Exercisable, March 31 (in dollars per share)	$14.15	'	'
Options, Outstanding, Weighted average remaining contractual term	'5 years 6 months	'	'
Options, Outstanding, Aggregate intrinsic value	7.4	'	'
Options, Exercisable, Weighted average remaining contractual term	'4 years 8 months 12 days	'	'
Options, Exercisable, Aggregate intrinsic value	5.6	'	'
Additional information related to stock options exercised [Abstract]	'	'	'
Intrinsic value of stock options exercised	1.1	0.1	0.2
Proceeds from stock options exercised	1.1	0.1	0.5
Restricted Stock [Member]	'	'	'
Compensation Expense [Abstract]	'	'	'
Stock-based compensation cost	2.2	1.8	1.1
Unrecognized compensation costs	3.9	'	'
Weighted average period recognized	'2 years 8 months 12 days	'	'
Shares [Roll Forward]	'	'	'
Non-vested balance, April 1 (in shares)	0.5	'	'
Granted (in shares)	0.3	'	'
Vested (in shares)	-0.2	'	'
Non-vested balance, March 31 (in shares)	0.6	0.5	'
Weighted average price [Rollforward]	'	'	'
Non-vested balance, April 1 (in dollars per share)	$6.91	'	'
Granted (in dollars per share)	$10.95	'	'
Vested (in dollars per share)	$8.67	'	'
Non-vested balance, March 31 (in dollars per share)	$8.66	$6.91	'
Restricted Stock - Performance Based Shares [Member]	'	'	'
Compensation Expense [Abstract]	'	'	'
Stock-based compensation cost	0.6	0.2	-0.8
Unrecognized compensation costs	$1.70	'	'
Weighted average period recognized	'2 years	'	'
Restricted Stock - Performance-Based Shares [Abstract]	'	'	'
Award performance period	'3 years	'	'
2008 Incentive Compensation Plan [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Number of shares available for grant (in shares)	1.8	'	'

Restructuring_and_Impairment_C2

Restructuring and Impairment Charges (Details) (USD $)

3 Months Ended

12 Months Ended

24 Months Ended

12 Months Ended

In Millions, unless otherwise specified

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2013

Dec. 31, 2012

Sep. 30, 2012

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2013

Cost of Sales [Member]

Restructuring Expense [Member]

Europe Segment [Member]

Europe Segment [Member]

Europe Segment [Member]

Europe Segment [Member]

North America Segment [Member]

North America Segment [Member]

Restructuring Cost and Reserve [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Asset impairment charges

$1.20

$2

$0.90

$8.30

$16.70

$3.20

$25.90

$2.50

'

'

$2

$24.10

$2.50

$26.10

$1.20

$1.80

Restructuring and repositioning expenses [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Employee severance and related benefits

'

'

'

'

'

13.7

14.9

'

'

'

'

'

'

28.6

1.2

'

Accelerated depreciation

'

'

'

'

'

4.3

0

'

'

'

'

'

'

'

'

'

Other repositioning costs

'

'

'

'

'

1.2

2.1

'

'

'

'

'

'

7.6

'

'

Total restructuring and repositioning expenses

'

'

'

'

'

19.2

17

'

4.3

14.9

'

'

'

'

'

'

Changes in accrued severance [Roll Forward]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Beginning balance

'

'

'

'

'

11.6

0

'

'

'

'

'

'

'

'

'

Additions

'

'

'

'

'

13.7

14.9

'

'

'

'

'

'

'

'

'

Payments

'

'

'

'

'

-7.8

-3.3

'

'

'

'

'

'

'

'

'

Effect of exchange rate changes

'

'

'

'

'

0.8

0

'

'

'

'

'

'

'

'

'

Ending balance

18.3

'

11.6

'

'

18.3

11.6

0

'

'

'

'

'

'

'

'

Assets held for sale

$11.60

'

$11.40

'

'

$11.60

$11.40

'

'

'

'

'

'

'

'

'

Other_Income_and_Expense_Detai

Other Income and Expense (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Other Income and Expense [Abstract]	'	'	'
Equity in earnings (loss) of non-consolidated affiliates	$0.70	$0.30	($0.10)
Interest income	0.5	0.9	0.8
Foreign currency transactions	-2	-1.1	-7.8
Other non-operating income - net	0	0.1	0
Total other (expense) income - net	($0.80)	$0.20	($7.10)

Income_Taxes_Details

Income Taxes (Details) (USD $)	3 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Components of earnings (loss) from continuing operations before income taxes [Abstract]	'	'	'	'
United States	'	$14.10	$10.20	$17.20
Foreign	'	9.9	-23.2	30.7
Earnings (loss) from continuing operations before income taxes	'	24	-13	47.9
Federal [Abstract]	'	'	'	'
Current	'	-2	2.6	0
Deferred	'	-95.8	-2.6	0.3
State [Abstract]	'	'	'	'
Current	'	0.2	0.2	0.3
Deferred	'	-21.4	-0.2	-0.2
Foreign [Abstract]	'	'	'	'
Current	'	10	6.4	8.3
Deferred	'	1.1	3.4	1.2
Total income tax (benefit) expense	'	-107.9	9.8	9.9
Reconciliation of federal statutory income tax rate to company's effective income tax rate [Abstract]	'	'	'	'
Statutory federal tax (in hundredths)	'	35.00%	35.00%	35.00%
State taxes, net of federal benefit (in hundredths)	'	2.10%	-1.30%	-0.10%
Taxes on non-U.S. earnings and losses (in hundredths)	'	-3.80%	-23.80%	-5.70%
Valuation allowance (in hundredths)	'	-471.70%	-59.30%	2.10%
Tax credits (in hundredths)	'	-7.10%	37.00%	-19.20%
Compensation (in hundredths)	'	0.40%	-13.00%	3.40%
Foreign tax rate or law changes	'	-9.20%	0.90%	0.60%
Uncertain tax positions net of settlements	'	0.40%	-41.90%	1.90%
Brazilian interest on equity (in hundredths)	'	-1.70%	3.20%	-1.00%
Dividend repatriation (in hundredths)	'	5.80%	-11.40%	4.40%
Other (in hundredths)	'	0.20%	-0.80%	-0.70%
Effective tax rate (in hundredths)	'	-449.60%	-75.40%	20.70%
Valuation Allowance [Line Items]	'	'	'	'
Reversal of deferred tax asset valuation allowances	119.2	119.2	'	'
Foreign tax benefit from law change	'	2.2	'	'
Development tax credit	'	'	'	4.4
Deferred tax assets [Abstract]	'	'	'	'
Accounts receivable	0.2	0.2	0.4	'
Inventories	4.1	4.1	4.1	'
Plant and equipment	2.4	2.4	1.6	'
Pension and employee benefits	39.1	39.1	48.5	'
Net operating loss, capital loss and credit carryforwards	122.4	122.4	117.6	'
Other, principally accrued liabilities	10.3	10.3	12	'
Total gross deferred tax assets	178.5	178.5	184.2	'
Less: valuation allowance	-61.2	-61.2	-172.8	'
Net deferred tax assets	117.3	117.3	11.4	'
Deferred tax liabilities [Abstract]	'	'	'	'
Goodwill	4.2	4.2	4.7	'
Plant and equipment	7.6	7.6	5.6	'
Other	1.7	1.7	2.9	'
Total gross deferred tax liabilities	13.5	13.5	13.2	'
Net deferred tax asset (liability)	103.8	103.8	-1.8	'
Current deferred tax asset	13	13	6.6	'
Noncurrent deferred tax asset	98.6	98.6	0.4	'
Current deferred tax liability (other current liabilities)	-0.5	-0.5	-0.2	'
Noncurrent deferred tax liability	-7.3	-7.3	-8.6	'
Reconciliation of unrecognized tax benefits [Roll Forward]	'	'	'	'
Balance, April 1	'	9	3.3	'
Gross increases - tax positions in prior period	'	2.5	5.6	'
Gross decreases - tax positions in prior period	'	-7	-0.1	'
Gross increases - tax positions in current period	'	0.1	0.6	'
Gross decreases - tax positions in current period	'	0	-0.4	'
Settlements	'	-1.9	0	'
Lapse of statute of limitations	'	-0.8	0	'
Effect of exchange rate changes	'	0.2	0	'
Balance, March 31	2.1	2.1	9	3.3
Unrecognized tax benefits that would impact effective tax rate	2.1	2.1	'	'
Undistributed foreign earnings [Abstract]	'	'	'	'
Undistributed earnings in remaining foreign operations	497.6	497.6	'	'
Foreign Tax Jurisdictions [Member]	'	'	'	'
Tax Credit Carryforward [Line Items]	'	'	'	'
Foreign tax credit carry forwards	2.4	2.4	'	'
Foreign Tax Jurisdictions [Member] | Minimum [Member]	'	'	'	'
Tax Credit Carryforward [Line Items]	'	'	'	'
Tax loss credit carryforward, expiration date	'	31-Mar-15	'	'
Foreign Tax Jurisdictions [Member] | Maximum [Member]	'	'	'	'
Tax Credit Carryforward [Line Items]	'	'	'	'
Tax loss credit carryforward, expiration date	'	31-Mar-17	'	'
Federal and State [Member]	'	'	'	'
Tax Credit Carryforward [Line Items]	'	'	'	'
Tax credit carryforwards, research and development	18.7	18.7	'	'
Federal and State [Member] | Minimum [Member]	'	'	'	'
Tax Credit Carryforward [Line Items]	'	'	'	'
Tax loss credit carryforward, expiration date	'	31-Mar-18	'	'
Federal and State [Member] | Maximum [Member]	'	'	'	'
Tax Credit Carryforward [Line Items]	'	'	'	'
Tax loss credit carryforward, expiration date	'	31-Mar-34	'	'
Foreign Tax Jurisdictions [Member]	'	'	'	'
Operating Loss Carryforwards [Line Items]	'	'	'	'
Tax loss carryforwards	188	188	'	'
Tax losses subject to expiration	195.5	195.5	'	'
Tax losses not subject to expiration	161	161	'	'
Undistributed foreign earnings [Abstract]	'	'	'	'
Tax on undistributed earnings of certain joint equity investment	1	1	'	'
Foreign Tax Jurisdictions [Member] | Minimum [Member]	'	'	'	'
Operating Loss Carryforwards [Line Items]	'	'	'	'
Tax loss carryforwards, expiration date	'	31-Mar-15	'	'
Foreign Tax Jurisdictions [Member] | Maximum [Member]	'	'	'	'
Operating Loss Carryforwards [Line Items]	'	'	'	'
Tax loss carryforwards, expiration date	'	31-Mar-34	'	'
State and Local [Member]	'	'	'	'
Operating Loss Carryforwards [Line Items]	'	'	'	'
Tax loss carryforwards	356.5	356.5	'	'
State and Local [Member] | Minimum [Member]	'	'	'	'
Operating Loss Carryforwards [Line Items]	'	'	'	'
Tax loss carryforwards, expiration date	'	31-Mar-15	'	'
State and Local [Member] | Maximum [Member]	'	'	'	'
Operating Loss Carryforwards [Line Items]	'	'	'	'
Tax loss carryforwards, expiration date	'	31-Mar-34	'	'
Austria [Member]	'	'	'	'
Income Tax Examination [Line Items]	'	'	'	'
Open tax year for examination by tax jurisdictions	'	'Fiscal 2012 - 2013	'	'
Brazil [Member]	'	'	'	'
Income Tax Examination [Line Items]	'	'	'	'
Open tax year for examination by tax jurisdictions	'	'Calendar 2009 - 2013	'	'
Germany [Member]	'	'	'	'
Income Tax Examination [Line Items]	'	'	'	'
Open tax year for examination by tax jurisdictions	'	'Fiscal 2011 - 2013	'	'
United States [Member]	'	'	'	'
Income Tax Examination [Line Items]	'	'	'	'
Open tax year for examination by tax jurisdictions	'	'Fiscal 2011 - 2013	'	'
Undistributed foreign earnings [Abstract]	'	'	'	'
Tax on undistributed earnings of certain joint equity investment	0.2	0.2	'	'
Foreign Tax Jurisdictions [Member]	'	'	'	'
Valuation Allowance [Line Items]	'	'	'	'
Valuation allowance recorded against deferred tax assets	'	12.3	'	'
U.S. Taxing Jurisdictions [Member]	'	'	'	'
Valuation Allowance [Line Items]	'	'	'	'
Valuation allowance recorded against deferred tax assets	'	15.3	'	'
United States [Member]	'	'	'	'
Valuation Allowance [Line Items]	'	'	'	'
Valuation allowance recorded against deferred tax assets	'	($6.20)	'	'

Earnings_Per_Share_Details

Earnings Per Share (Details) (USD $)

3 Months Ended

12 Months Ended

In Millions, except Per Share data, unless otherwise specified

Mar. 31, 2014

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Basic [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Earnings (loss) from continuing operations

$119.70

[1],[2]

($3.40)

[1],[2]

$5

[1],[2]

$10.60

[1],[2]

($1.60)

[1]

($8.40)

[1]

($11.80)

[1]

($1)

[1]

$131.90

($22.80)

$38

Less: Net earnings attributable to noncontrolling interest

'

'

'

'

'

'

'

'

-1.5

-1.4

-0.3

Less: Undistributed earnings attributable to unvested shares

'

'

'

'

'

'

'

'

-1.7

0

-0.2

Earnings (loss) from continuing operations available to Modine shareholders

'

'

'

'

'

'

'

'

128.7

-24.2

37.5

Earnings from discontinued operations

'

'

'

'

'

'

'

'

0

0

0.8

Net earnings (loss) available to Modine shareholders

'

'

'

'

'

'

'

'

128.7

-24.2

38.3

Weighted average shares outstanding - basic (in shares)

'

'

'

'

'

'

'

'

46.9

46.6

46.5

Basic Earnings Per Share [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Earnings (loss) per share - continuing operations (in dollars per share)

'

'

'

'

'

'

'

'

$2.75

($0.52)

$0.81

Earnings per share - discontinued operations (in dollars per share)

'

'

'

'

'

'

'

'

$0

$0

$0.02

Net earnings (loss) per share - basic (in dollars per share)

'

'

'

'

'

'

'

'

$2.75

($0.52)

$0.83

Diluted [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Earnings (loss) from continuing operations

119.7

[1],[2]

-3.4

[1],[2]

5

[1],[2]

10.6

[1],[2]

-1.6

[1]

-8.4

[1]

-11.8

[1]

-1

[1]

131.9

-22.8

38

Less: Net earnings attributable to noncontrolling interest

'

'

'

'

'

'

'

'

-1.5

-1.4

-0.3

Less: Undistributed earnings attributable to unvested shares

'

'

'

'

'

'

'

'

-0.9

0

-0.2

Earnings (loss) from continuing operations available to Modine shareholders

'

'

'

'

'

'

'

'

129.5

-24.2

37.5

Earnings from discontinued operations

'

'

'

'

'

'

'

'

0

0

0.8

Net earnings (loss) available to Modine shareholders

'

'

'

'

'

'

'

'

$129.50

($24.20)

$38.30

Weighted average shares outstanding - basic (in shares)

'

'

'

'

'

'

'

'

46.9

46.6

46.5

Effect of dilutive securities (in shares)

'

'

'

'

'

'

'

'

0.7

0

0.4

Weighted average shares outstanding - diluted (in shares)

'

'

'

'

'

'

'

'

47.6

46.6

46.9

Diluted Earnings Per Share [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Earnings (loss) per share - continuing operations (in dollars per share)

'

'

'

'

'

'

'

'

$2.72

($0.52)

$0.80

Earnings per share - discontinued operations (in dollars per share)

'

'

'

'

'

'

'

'

$0

$0

$0.02

Net earnings (loss) per share - diluted (in dollars per share)

$2.49

[2]

($0.08)

$0.10

$0.21

($0.04)

($0.19)

($0.26)

($0.03)

$2.72

($0.52)

$0.82

Potential dilutive securities (in shares)

'

'

'

'

'

'

'

'

'

0.3

'

Stock Options [Member]

'

'

'

'

'

'

'

'

'

'

'

Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Antidilutive securities excluded from computation of earning per share (in shares)

'

'

'

'

'

'

'

'

0.8

1.1

1.1

Restricted Stock [Member]

'

'

'

'

'

'

'

'

'

'

'

Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Antidilutive securities excluded from computation of earning per share (in shares)

'

'

'

'

'

'

'

'

0

0.1

0.4

[1]

The quarterly financial data presented above includes restructuring expenses and impairment charges, primarily related to our Europe restructuring program and certain restructuring actions in the U.S. During fiscal 2014, restructuring expenses totaled $0.5 million, $0.6 million, $9.4 million, and $5.6 million for the quarters ended June 30, 2013, September 30, 2013, December 31, 2013, and March 31, 2014, respectively. The Company recorded impairment charges of $2.0 million and $1.2 million during the quarters ended December 31, 2013 and March 31, 2014, respectively. During fiscal 2013, restructuring expenses totaled $4.6 million, $1.3 million, $1.4 million, and $9.7 million for the quarters ended June 30, 2012, September 30, 2012, December 31, 2012, and March 31, 2013, respectively. The Company recorded impairment charges of $16.7 million, $8.3 million, and $0.9 million during the quarters ended September 30, 2012, December 31, 2012, and March 31, 2013, respectively. See Note 6 for additional information.

[2]

The quarter ended March 31, 2014 was benefited by the reversal of U.S. income tax valuation allowances totaling $119.2 million. See Note 8 for additional information.

Inventories_Details

Inventories (Details) (USD $)	Mar. 31, 2014	Mar. 31, 2013
In Millions, unless otherwise specified
Inventories [Abstract]	'	'
Raw materials and work in process	$89.20	$88.10
Finished goods	27.6	30.7
Total inventories	$116.80	$118.80

Property_Plant_and_Equipment_D

Property, Plant and Equipment (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Property, Plant and Equipment [Line Items]	'	'	'
Gross property, plant and equipment	$1,078.60	$1,033.10	'
Less accumulated depreciation	-719	-677.2	'
Net property, plant and equipment	359.6	355.9	'
Depreciation expense	57.3	55.1	57.1
(Loss) gain from disposition of property, plant and equipment	-2.6	-2.5	-0.6
Land [Member]	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Gross property, plant and equipment	10.4	10	'
Buildings and Improvements [Member]	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Gross property, plant and equipment	228.1	216.7	'
Buildings and Improvements [Member] | Minimum [Member]	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Property, plant and equipment, depreciable lives	'10 years	'	'
Buildings and Improvements [Member] | Maximum [Member]	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Property, plant and equipment, depreciable lives	'40 years	'	'
Machinery and Equipment [Member]	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Gross property, plant and equipment	715.1	679.1	'
Machinery and Equipment [Member] | Minimum [Member]	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Property, plant and equipment, depreciable lives	'3 years	'	'
Machinery and Equipment [Member] | Maximum [Member]	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Property, plant and equipment, depreciable lives	'12 years	'	'
Office Equipment [Member]	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Gross property, plant and equipment	89.5	95.7	'
Office Equipment [Member] | Minimum [Member]	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Property, plant and equipment, depreciable lives	'3 years	'	'
Office Equipment [Member] | Maximum [Member]	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Property, plant and equipment, depreciable lives	'10 years	'	'
Construction in Progress [Member]	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Gross property, plant and equipment	$35.50	$31.60	'

Investment_in_Affiliate_Detail

Investment in Affiliate (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Schedule of Equity Method Investments [Line Items]	'	'	'
Equity method investment, percent owned (in hundredths)	20.00%	'	'
Earnings (loss) from equity method investments	$0.70	$0.30	($0.10)
Nikkei Heat Exchanger [Member]	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'
Equity method investment, percent owned (in hundredths)	50.00%	'	'
Equity method investment	3.4	3.3	'
Earnings (loss) from equity method investments	$0.70	$0.30	($0.10)

Intangible_Assets_Details

Intangible Assets (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Amortized intangible assets [Abstract]	'	'	'
Gross Carrying Value	$18.30	$13.10	'
Accumulated Amortization	-5.9	-4.8	'
Net Intangible Assets	12.4	8.3	'
Amortization expense	0.8	0.7	0.6
Future amortization expense for intangible assets [Abstract]	'	'	'
2015	1.6	'	'
2016	1.7	'	'
2017	1.7	'	'
2018	1.7	'	'
2019	1.6	'	'
2020 & Beyond	4.1	'	'
Tradenames [Member]	'	'	'
Amortized intangible assets [Abstract]	'	'	'
Gross Carrying Value	10.1	9.6	'
Accumulated Amortization	-5.7	-4.7	'
Net Intangible Assets	4.4	4.9	'
Acquired technology [Member]	'	'	'
Amortized intangible assets [Abstract]	'	'	'
Gross Carrying Value	5.8	3.5	'
Accumulated Amortization	-0.2	-0.1	'
Net Intangible Assets	5.6	3.4	'
Customer relationships [Member]	'	'	'
Amortized intangible assets [Abstract]	'	'	'
Gross Carrying Value	2.4	0	'
Accumulated Amortization	0	0	'
Net Intangible Assets	$2.40	$0	'

Goodwill_Details

Goodwill (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Goodwill [Line Items]	'	'
Beginning balance	$28.70	$29.90
Acquisition	'	0.8
Effect of exchange rate changes	0	-2
Ending balance	28.7	28.7
Asia [Member]	'	'
Goodwill [Line Items]	'	'
Beginning balance	0.5	0.5
Acquisition	'	0
Effect of exchange rate changes	0	0
Ending balance	0.5	0.5
Europe [Member]	'	'
Goodwill [Line Items]	'	'
Accumulated goodwill impairment losses	8.7	'
North America [Member]	'	'
Goodwill [Line Items]	'	'
Accumulated goodwill impairment losses	23.8	'
South America [Member]	'	'
Goodwill [Line Items]	'	'
Beginning balance	12.2	13.5
Acquisition	'	0
Effect of exchange rate changes	-1.3	-1.3
Ending balance	10.9	12.2
Commercial Products [Member]	'	'
Goodwill [Line Items]	'	'
Beginning balance	16	15.9
Acquisition	'	0.8
Effect of exchange rate changes	1.3	-0.7
Ending balance	$17.30	$16

Product_Warranties_Operating_L2

Product Warranties, Operating Leases and Other Commitments (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Product Warranties, Operating Leases and Other Commitments [Abstract]	'	'	'
Product warranty period, minimum	'1 year	'	'
Product warranty period, maximum	'5 years	'	'
Changes in accrued warranty costs [Roll Forward]	'	'	'
Balance, beginning of period	$12.60	$11.40	'
Accruals for warranties issued	6	4.9	'
Accruals related to pre-existing warranties	8.3	2.7	'
Settlements	-13	-6.1	'
Effect of exchange rate changes	0.1	-0.3	'
Balance, end of period	14	12.6	11.4
Rental expense	11.5	11.3	9
Indemnification period, minimum	'1 year	'	'
Indemnification period, maximum	'15 years	'	'
Capital expenditure commitments	8.6	'	'
Future minimum rental commitments under non-cancelable operating leases [Abstract]	'	'	'
2015	7.9	'	'
2016	5.6	'	'
2017	4.1	'	'
2018	2.6	'	'
2019	1.8	'	'
2020 and beyond	5.4	'	'
Total future minimum rental commitments	$27.40	'	'

Indebtedness_Details

Indebtedness (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Long-term Debt and Capital Lease Obligations [Abstract]	'	'
Long-term debt	$125.50	$126.90
Capital lease obligations	6.5	6.1
Total debt	132	133
Less current portion	-0.8	-0.5
Total long-term debt	131.2	132.5
Maturities of long term debt and capital lease obligations [Abstract]	'	'
2015	0.8	'
2016	0.5	'
2017	8.3	'
2018	16.3	'
2019	16.4	'
2020 & beyond	89.7	'
Total debt	132	133
Line of Credit Facility [Line Items]	'	'
Maximum borrowing capacity	175	'
Expiration date	31-Aug-18	'
Available for future borrowings	218	'
Letters of credit outstanding, amount	9	'
Foreign credit agreements [Member]	'	'
Long-term Debt and Capital Lease Obligations [Abstract]	'	'
Long-term debt	0.5	1.9
Maturities of long term debt and capital lease obligations [Abstract]	'	'
Short-term debt	32.4	30.6
Line of Credit Facility [Line Items]	'	'
Available for future borrowings	52	'
Revolving Credit Facility [Member]	'	'
Long-term Debt and Capital Lease Obligations [Abstract]	'	'
Long-term debt	0	0
Domestic Revolving Credit Facility [Member]	'	'
Maturities of long term debt and capital lease obligations [Abstract]	'	'
Long-term debt, fair value	140	139
Line of Credit Facility [Line Items]	'	'
Maximum borrowing capacity	145	'
Expiration date	31-Aug-14	'
Variable rate basis	'LIBOR	'
Basis spread on variable rate (in hundredths)	1.50%	'
Amount outstanding	0	'
Available for future borrowings	166	'
Domestic Revolving Credit Facility [Member] | Minimum [Member]	'	'
Line of Credit Facility [Line Items]	'	'
Basis spread on variable rate (in hundredths)	1.25%	'
Domestic Revolving Credit Facility [Member] | Maximum [Member]	'	'
Line of Credit Facility [Line Items]	'	'
Basis spread on variable rate (in hundredths)	2.25%	'
6.8% Fixed Rate Senior Notes [Member]	'	'
Long-term Debt and Capital Lease Obligations [Abstract]	'	'
Interest rate percentage (in hundredths)	6.80%	'
Long-term debt	$125	$125

Pension_and_Employee_Benefit_P2

Pension and Employee Benefit Plans (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Portion of employee contribution matched (in hundredths)	50.00%	50.00%	50.00%
Contribution by employee (in hundredths)	5.00%	5.00%	5.00%
Defined contribution plan cost recognized	$8.30	$4.10	$4.40
Pension Plans [Member]	'	'	'
Change in benefit obligation [Roll Forward]	'	'	'
Benefit obligation at beginning of year	309.6	281.8	'
Service cost	0.6	0.6	1.4
Interest cost	13	13.5	13.9
Actuarial (gain) loss	-10.8	27.1	'
Benefits paid	-18.6	-12.6	'
Effect of exchange rate changes	1.9	-0.8	'
Benefit obligation at end of year	295.7	309.6	281.8
Change in plan assets [Roll Forward]	'	'	'
Fair value of plan assets at beginning of year	200.6	186.6	'
Actual return on plan assets	22.2	16.2	'
Benefits paid	-18.6	-12.6	'
Employer contributions	9.5	10.4	'
Fair value of plan assets at end of year	213.7	200.6	186.6
Funded status at end of year	-82	-109	'
Amounts recognized in the consolidated balance sheets [Abstract]	'	'	'
Current liability	-1	-1	'
Noncurrent liability	-81	-108	'
Total liability	-82	-109	'
Amounts recognized in accumulated other comprehensive loss [Abstract]	'	'	'
Net actuarial loss (gain)	153.4	176.4	'
Prior service credit	0	0	'
Total	153.4	176.4	'
Pension plans with accumulated benefit obligations in excess of plan assets [Abstract]	'	'	'
Accumulated benefit obligation	293	307.2	'
Components of net periodic benefit costs [Abstract]	'	'	'
Service cost	0.6	0.6	1.4
Interest cost	13	13.5	13.9
Expected return on plan assets	-15.7	-16.1	-15.7
Amortization of [Abstract]	'	'	'
Unrecognized net loss (gain)	6.3	5	7
Unrecognized prior service credit	0	0	0
Adjustment for curtailment	0	0	0
Net periodic benefit cost (income)	4.2	3	6.6
Other changes in plan assets and benefit obligation recognized in other comprehensive (income) loss [Abstract]	'	'	'
Net actuarial (gain) loss	-17.3	27	45.7
Prior service costs	0	0	0
Reversal of amortization items [Abstract]	'	'	'
Net actuarial (gain) loss	-6.3	-5	-7
Prior service costs	0	0	0
Total recognized in other comprehensive (income) loss	-23.6	22	38.7
Estimated net actuarial loss that will be amortized	5.4	'	'
Estimated future benefit payments [Abstract]	'	'	'
Anticipated contributions for 2015 fiscal year	9.5	'	'
2015	15.6	'	'
2016	15.7	'	'
2017	16.2	'	'
2018	17.6	'	'
2019	18	'	'
2020-2024	95.3	'	'
Postretirement Plans [Member]	'	'	'
Change in benefit obligation [Roll Forward]	'	'	'
Benefit obligation at beginning of year	7.5	7.2	'
Service cost	0.1	0.1	0
Interest cost	0.2	0.3	0.4
Actuarial (gain) loss	-1.4	0.1	'
Benefits paid	-0.5	-0.2	'
Effect of exchange rate changes	0	0	'
Benefit obligation at end of year	5.9	7.5	7.2
Change in plan assets [Roll Forward]	'	'	'
Fair value of plan assets at beginning of year	0	0	'
Actual return on plan assets	0	0	'
Benefits paid	-0.5	-0.2	'
Employer contributions	0.5	0.2	'
Fair value of plan assets at end of year	0	0	0
Funded status at end of year	-5.9	-7.5	'
Amounts recognized in the consolidated balance sheets [Abstract]	'	'	'
Current liability	-0.5	-0.8	'
Noncurrent liability	-5.4	-6.7	'
Total liability	-5.9	-7.5	'
Amounts recognized in accumulated other comprehensive loss [Abstract]	'	'	'
Net actuarial loss (gain)	-1.7	-0.3	'
Prior service credit	-0.2	-1.5	'
Total	-1.9	-1.8	'
Components of net periodic benefit costs [Abstract]	'	'	'
Service cost	0.1	0.1	0
Interest cost	0.2	0.3	0.4
Expected return on plan assets	0	0	0
Amortization of [Abstract]	'	'	'
Unrecognized net loss (gain)	-0.1	0	0
Unrecognized prior service credit	-1.2	-1.5	-1.7
Adjustment for curtailment	0	0	-0.3
Net periodic benefit cost (income)	-1	-1.1	-1.6
Other changes in plan assets and benefit obligation recognized in other comprehensive (income) loss [Abstract]	'	'	'
Net actuarial (gain) loss	-1.4	0	0.7
Prior service costs	0	0	0.3
Reversal of amortization items [Abstract]	'	'	'
Net actuarial (gain) loss	0.1	0.1	0
Prior service costs	1.2	1.5	1.7
Total recognized in other comprehensive (income) loss	-0.1	1.6	2.7
Estimated prior service credit that will be amortized	0.2	'	'
Assumed healthcare cost trend rates [Abstract]	'	'	'
Healthcare costs trend rate	7.30%	7.50%	'
Ultimate trend rate (in hundredths)	5.00%	5.00%	'
Year the rate reaches the ultimate trend rate	'2019	'2019	'
Effect of one percentage point change in assumed health care cost trend rates [Abstract]	'	'	'
Effect on total of service and interest cost on one percentage point increase	0.1	'	'
Effect on total of service and interest cost on one percentage point decrease	0.1	'	'
Effect on postretirement benefit obligation for one percentage point increase	0.1	'	'
Effect on postretirement benefit obligation for one percentage point decrease	-0.1	'	'
U.S. Pension Plans [Member]	'	'	'
Change in plan assets [Roll Forward]	'	'	'
Fair value of plan assets at beginning of year	200.6	'	'
Employer contributions	8	9.2	11.5
Fair value of plan assets at end of year	$213.70	$200.60	'
Weighted-average assumptions used in calculating benefit obligation [Abstract]	'	'	'
Discount rate (in hundredths)	4.70%	4.40%	'
Weighted-average assumptions used in calculating costs under the plan [Abstract]	'	'	'
Discount rate (in hundredths)	4.40%	4.90%	5.80%
Expected return on plan assets (in hundredths)	8.00%	8.00%	8.00%
Defined Benefit Plan, Information about Plan Assets [Abstract]	'	'	'
Target allocation (in hundredths)	100.00%	'	'
Plan assets (in hundredths)	100.00%	100.00%	'
Expected return on plan assets for next fiscal year (in hundredths)	8.00%	'	'
U.S. Pension Plans [Member] | Equity Securities [Member]	'	'	'
Defined Benefit Plan, Information about Plan Assets [Abstract]	'	'	'
Target allocation (in hundredths)	55.00%	'	'
Plan assets (in hundredths)	57.00%	57.00%	'
U.S. Pension Plans [Member] | Debt Securities [Member]	'	'	'
Defined Benefit Plan, Information about Plan Assets [Abstract]	'	'	'
Target allocation (in hundredths)	38.00%	'	'
Plan assets (in hundredths)	37.00%	37.00%	'
U.S. Pension Plans [Member] | Alternative Assets [Member]	'	'	'
Defined Benefit Plan, Information about Plan Assets [Abstract]	'	'	'
Target allocation (in hundredths)	5.00%	'	'
Plan assets (in hundredths)	5.00%	5.00%	'
U.S. Pension Plans [Member] | Cash [Member]	'	'	'
Defined Benefit Plan, Information about Plan Assets [Abstract]	'	'	'
Target allocation (in hundredths)	2.00%	'	'
Plan assets (in hundredths)	1.00%	1.00%	'
Foreign Pension Plans [Member]	'	'	'
Weighted-average assumptions used in calculating benefit obligation [Abstract]	'	'	'
Discount rate (in hundredths)	3.00%	3.50%	'
Weighted-average assumptions used in calculating costs under the plan [Abstract]	'	'	'
Discount rate (in hundredths)	3.50%	5.00%	5.80%
U.S. Postretirement Plans [Member]	'	'	'
Weighted-average assumptions used in calculating benefit obligation [Abstract]	'	'	'
Discount rate (in hundredths)	4.30%	3.70%	'
Weighted-average assumptions used in calculating costs under the plan [Abstract]	'	'	'
Discount rate (in hundredths)	3.70%	4.40%	5.40%

Derivative_Instruments_Details

Derivative Instruments (Details) (Not Designated as Hedges [Member], USD $)	Mar. 31, 2014	Mar. 31, 2013
In Millions, unless otherwise specified
Foreign Exchange Contracts [Member] | Other current liabilities [Member]	'	'
Derivative instruments [Abstract]	'	'
Derivative Liability, Fair Value, Net	$0.20	$0.10
Commodity Derivatives [Member] | Other current liabilities [Member]	'	'
Derivative instruments [Abstract]	'	'
Derivative Liability, Fair Value, Net	0.1	1.2
Commodity Derivatives [Member] | Other noncurrent liabilities [Member]	'	'
Derivative instruments [Abstract]	'	'
Derivative Liability, Fair Value, Net	$0.10	$0.10

Derivative_Instruments_Gain_Lo

Derivative Instruments, (Gain) Loss by Hedging Relationship, by Income Statement Location (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Derivative Instruments, (Gain) Loss [Line Items]	'	'	'
Amount of Loss (Gain) Recognized in AOCI	$0	$0.50	$3.10
Total Loss (Gain) Recognized in Continuing Operations	0.5	4.3	3.4
Reclassification out of Accumulated Other Comprehensive Income [Member]	'	'	'
Derivative Instruments, (Gain) Loss [Line Items]	'	'	'
Loss Reclassified from AOCI into Continuing Operations	0.5	2.6	3.1
Commodity Derivatives [Member]	'	'	'
Derivative Instruments, (Gain) Loss [Line Items]	'	'	'
Amount of Loss (Gain) Recognized in AOCI	0	0.5	3.1
Foreign Exchange Contracts [Member]	'	'	'
Derivative Instruments, (Gain) Loss [Line Items]	'	'	'
Amount of Loss (Gain) Recognized in AOCI	'	0	0
Cost of Sales [Member] | Commodity Derivatives [Member]	'	'	'
Derivative Instruments, (Gain) Loss [Line Items]	'	'	'
Total Loss (Gain) Recognized in Continuing Operations	0.5	4.6	3
Cost of Sales [Member] | Commodity Derivatives [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]	'	'	'
Derivative Instruments, (Gain) Loss [Line Items]	'	'	'
Loss Reclassified from AOCI into Continuing Operations	0.5	2.6	3.1
Other Expense - net [Member] | Foreign Exchange Contracts [Member]	'	'	'
Derivative Instruments, (Gain) Loss [Line Items]	'	'	'
Total Loss (Gain) Recognized in Continuing Operations	'	-0.3	0.4
Other Expense - net [Member] | Foreign Exchange Contracts [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]	'	'	'
Derivative Instruments, (Gain) Loss [Line Items]	'	'	'
Loss Reclassified from AOCI into Continuing Operations	'	$0	$0

Contingencies_and_Litigation_D

Contingencies and Litigation (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Concentration Risk [Line Items]	'	'	'
Number of major customers	1	1	'
Number of customers	10	'	'
Number of top customers	10	'	'
European value added tax [Abstract]	'	'	'
Value added tax payable	1.5	4.4	10.7
Reduction to selling general and administrative expense	-2.9	-1.6	'
Environmental Matters [Abstract]	'	'	'
Number of sites remediation considered for potentially responsible party	3	'	'
Reserves for environmental matters	5.1	5.2	'
Continuing Operations [Member]	'	'	'
Environmental Matters [Abstract]	'	'	'
Additional reserves	'	1	'
Discontinued Operations [Member]	'	'	'
Environmental Matters [Abstract]	'	'	'
Additional reserves	'	-0.5	'
Trade Compliance [Member]	'	'	'
Loss Contingencies [Line Items]	'	'	'
Estimated contingent liability	'	'	4.5
Decrease in estimated contingent liability	'	'	2.3
Customer Concentration Risk [Member]	'	'	'
Concentration Risk [Line Items]	'	'	'
Concentration risk, percentage (in hundredths)	56.00%	59.00%	61.00%
Credit Concentration Risk [Member]	'	'	'
Concentration Risk [Line Items]	'	'	'
Concentration risk, percentage (in hundredths)	46.00%	51.00%	'

Accumulated_Other_Comprehensiv2

Accumulated Other Comprehensive Loss (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]	'
Beginning balance	($128.40)
Other comprehensive income before reclassifications	28.2
Reclassifications [Abstract]	'
Tax benefit (expense)	-9.2
Total other comprehensive income (loss)	24.5
Ending balance	-103.9
Reclassification out of Accumulated Other Comprehensive Income [Member]	'
Reclassifications [Abstract]	'
Amortization of unrecognized net loss	6.2	[1]
Amortization of unrecognized prior service credit	-1.2	[1]
Commodity derivatives	0.5	[2]
Foreign Currency Translation [Member]	'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'
Beginning balance	17.8
Other comprehensive income before reclassifications	9.5
Reclassifications [Abstract]	'
Tax benefit (expense)	0
Total other comprehensive income (loss)	9.5
Ending balance	27.3
Foreign Currency Translation [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]	'
Reclassifications [Abstract]	'
Amortization of unrecognized net loss	0	[1]
Amortization of unrecognized prior service credit	0	[1]
Commodity derivatives	0	[2]
Cash Flow Hedges [Member]	'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'
Beginning balance	-1.1
Other comprehensive income before reclassifications	0
Reclassifications [Abstract]	'
Tax benefit (expense)	0.6
Total other comprehensive income (loss)	1.1
Ending balance	0
Cash Flow Hedges [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]	'
Reclassifications [Abstract]	'
Amortization of unrecognized net loss	0	[1]
Amortization of unrecognized prior service credit	0	[1]
Commodity derivatives	0.5	[2]
Defined Benefit Plans [Member]	'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'
Beginning balance	-145.1
Other comprehensive income before reclassifications	18.7
Reclassifications [Abstract]	'
Tax benefit (expense)	-9.8
Total other comprehensive income (loss)	13.9
Ending balance	-131.2
Defined Benefit Plans [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]	'
Reclassifications [Abstract]	'
Amortization of unrecognized net loss	6.2	[1]
Amortization of unrecognized prior service credit	-1.2	[1]
Commodity derivatives	$0	[2]
[1]	Amounts are included in the calculation of net periodic benefit cost. See Note 17 for additional information.
[2]	Reclassifications for commodity derivatives are included in cost of sales.

Segment_and_Geographic_Informa2

Segment and Geographic Information (Details) (USD $)

3 Months Ended

12 Months Ended

In Millions, unless otherwise specified

Mar. 31, 2014

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Segment

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Number of reportable segments

'

'

'

'

'

'

'

'

5

'

'

Net sales, gross profit, operating (loss) income and total assets by segment [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Gross profit

$62.30

$56.80

$57.20

$61.90

$56.10

$48.20

$52.60

$51.70

$238.20

$208.60

$256.60

Gross profit (% of sales) (in hundredths)

'

'

'

'

'

'

'

'

16.10%

15.20%

16.30%

Operating (loss) income

'

'

'

'

'

'

'

'

37.2

-0.6

67.5

Total assets

1,032.30

'

'

'

818.8

'

'

'

1,032.30

818.8

'

Segment Reporting Information, Additional Information [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Total capital expenditures

'

'

'

'

'

'

'

'

53.1

49.8

64.4

Total depreciation and amortization expense

'

'

'

'

'

'

'

'

58.1

55.8

57.7

Long-lived assets

393.8

'

'

'

382.8

'

'

'

393.8

382.8

'

Operating income effect between the Corporate and Europe segment for modification in internal financial reporting changes

'

'

'

'

'

'

'

'

'

9.3

11

Receivables and cash advance

45

'

'

'

'

'

'

'

45

'

'

Reversal of deferred tax asset valuation allowances

119.2

'

'

'

'

'

'

'

119.2

'

'

Net sales

'

'

'

'

'

'

'

'

1,477.60

1,376

1,577.20

Revenue from External Customer [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Net sales

'

'

'

'

'

'

'

'

1,477.60

1,376

1,577.20

Modules/Assemblies [Member]

'

'

'

'

'

'

'

'

'

'

'

Revenue from External Customer [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Net sales

'

'

'

'

'

'

'

'

379.9

358.5

410.4

Oil Coolers [Member]

'

'

'

'

'

'

'

'

'

'

'

Revenue from External Customer [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Net sales

'

'

'

'

'

'

'

'

215.4

194.1

249.4

EGR Coolers [Member]

'

'

'

'

'

'

'

'

'

'

'

Revenue from External Customer [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Net sales

'

'

'

'

'

'

'

'

172.5

136.1

152.7

Building HVAC [Member]

'

'

'

'

'

'

'

'

'

'

'

Revenue from External Customer [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Net sales

'

'

'

'

'

'

'

'

159.5

151.8

153.3

Charge-Air Coolers [Member]

'

'

'

'

'

'

'

'

'

'

'

Revenue from External Customer [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Net sales

'

'

'

'

'

'

'

'

157

161.8

173.9

Condensers [Member]

'

'

'

'

'

'

'

'

'

'

'

Revenue from External Customer [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Net sales

'

'

'

'

'

'

'

'

129.2

128.8

101.5

Radiators [Member]

'

'

'

'

'

'

'

'

'

'

'

Revenue from External Customer [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Net sales

'

'

'

'

'

'

'

'

129

134.4

191.4

Other [Member]

'

'

'

'

'

'

'

'

'

'

'

Revenue from External Customer [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Net sales

'

'

'

'

'

'

'

'

135.1

110.5

144.6

United States [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information, Additional Information [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Long-lived assets

112.9

'

'

'

115.1

'

'

'

112.9

115.1

'

Net sales

'

'

'

'

'

'

'

'

645.7

637.4

666.2

Germany [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information, Additional Information [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Long-lived assets

94.6

'

'

'

94.3

'

'

'

94.6

94.3

'

Net sales

'

'

'

'

'

'

'

'

229.5

214.8

285.9

Brazil [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information, Additional Information [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Net sales

'

'

'

'

'

'

'

'

122

128.8

169.1

Hungary [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information, Additional Information [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Net sales

'

'

'

'

'

'

'

'

150.3

117.6

149.1

Other [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information, Additional Information [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Long-lived assets

186.3

'

'

'

173.4

'

'

'

186.3

173.4

'

Net sales

'

'

'

'

'

'

'

'

330.1

277.4

306.9

North America [Member]

'

'

'

'

'

'

'

'

'

'

'

Net sales, gross profit, operating (loss) income and total assets by segment [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Gross profit

'

'

'

'

'

'

'

'

93.5

81.4

89.7

Gross profit (% of sales) (in hundredths)

'

'

'

'

'

'

'

'

16.40%

14.40%

14.90%

Operating (loss) income

'

'

'

'

'

'

'

'

42.1

39.2

47.9

Total assets

218.1

'

'

'

218.3

'

'

'

218.1

218.3

'

Segment Reporting Information, Additional Information [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Total capital expenditures

'

'

'

'

'

'

'

'

18.9

19

15.2

Total depreciation and amortization expense

'

'

'

'

'

'

'

'

19.3

20.1

20

Net sales

'

'

'

'

'

'

'

'

568.7

564.5

602

Europe [Member]

'

'

'

'

'

'

'

'

'

'

'

Net sales, gross profit, operating (loss) income and total assets by segment [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Gross profit

'

'

'

'

'

'

'

'

70.8

61

85.1

Gross profit (% of sales) (in hundredths)

'

'

'

'

'

'

'

'

12.10%

12.30%

14.10%

Operating (loss) income

'

'

'

'

'

'

'

'

9.6

[1]

-25.4

[1]

26.3

[1]

Total assets

367.9

'

'

'

332.2

'

'

'

367.9

332.2

'

Segment Reporting Information, Additional Information [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Total capital expenditures

'

'

'

'

'

'

'

'

22.9

16.5

29.8

Total depreciation and amortization expense

'

'

'

'

'

'

'

'

26.6

23.4

26.5

Net sales

'

'

'

'

'

'

'

'

584.4

498

602.8

South America [Member]

'

'

'

'

'

'

'

'

'

'

'

Net sales, gross profit, operating (loss) income and total assets by segment [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Gross profit

'

'

'

'

'

'

'

'

20.8

22.5

30.9

Gross profit (% of sales) (in hundredths)

'

'

'

'

'

'

'

'

16.90%

16.80%

17.60%

Operating (loss) income

'

'

'

'

'

'

'

'

7.5

11.2

10.4

Total assets

80.1

'

'

'

91.8

'

'

'

80.1

91.8

'

Segment Reporting Information, Additional Information [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Total capital expenditures

'

'

'

'

'

'

'

'

5.7

3.4

5.2

Total depreciation and amortization expense

'

'

'

'

'

'

'

'

3.3

3.7

4.1

Net sales

'

'

'

'

'

'

'

'

122.7

133.8

175.6

Asia [Member]

'

'

'

'

'

'

'

'

'

'

'

Net sales, gross profit, operating (loss) income and total assets by segment [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Gross profit

'

'

'

'

'

'

'

'

8.9

1.7

7.9

Gross profit (% of sales) (in hundredths)

'

'

'

'

'

'

'

'

12.50%

2.80%

9.40%

Operating (loss) income

'

'

'

'

'

'

'

'

-3.3

-8.8

-2.5

Total assets

92.8

'

'

'

91.3

'

'

'

92.8

91.3

'

Segment Reporting Information, Additional Information [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Total capital expenditures

'

'

'

'

'

'

'

'

4.6

7.8

12.5

Total depreciation and amortization expense

'

'

'

'

'

'

'

'

6.7

6.4

5

Net sales

'

'

'

'

'

'

'

'

71.5

59.5

84.1

Commercial Products [Member]

'

'

'

'

'

'

'

'

'

'

'

Net sales, gross profit, operating (loss) income and total assets by segment [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Gross profit

'

'

'

'

'

'

'

'

43.4

40.8

42.5

Gross profit (% of sales) (in hundredths)

'

'

'

'

'

'

'

'

29.60%

29.30%

29.90%

Operating (loss) income

'

'

'

'

'

'

'

'

9.4

10

14.3

Total assets

132.7

[2]

'

'

'

73.7

[2]

'

'

'

132.7

[2]

73.7

[2]

'

Segment Reporting Information, Additional Information [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Total capital expenditures

'

'

'

'

'

'

'

'

1

3.1

1.7

Total depreciation and amortization expense

'

'

'

'

'

'

'

'

2.2

2.2

2.1

Net sales

'

'

'

'

'

'

'

'

146.5

139.3

142.2

Segment Total [Member]

'

'

'

'

'

'

'

'

'

'

'

Net sales, gross profit, operating (loss) income and total assets by segment [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Gross profit

'

'

'

'

'

'

'

'

237.4

207.4

256.1

Gross profit (% of sales) (in hundredths)

'

'

'

'

'

'

'

'

15.90%

14.90%

15.90%

Operating (loss) income

'

'

'

'

'

'

'

'

65.3

26.2

96.4

Segment Reporting Information, Additional Information [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Net sales

'

'

'

'

'

'

'

'

1,493.80

1,395.10

1,606.70

Corporate and Eliminations [Member]

'

'

'

'

'

'

'

'

'

'

'

Net sales, gross profit, operating (loss) income and total assets by segment [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Gross profit

'

'

'

'

'

'

'

'

0.8

1.2

0.5

Gross profit (% of sales) (in hundredths)

'

'

'

'

'

'

'

'

0.00%

0.00%

0.00%

Operating (loss) income

'

'

'

'

'

'

'

'

-28.1

[1]

-26.8

[1]

-28.9

[1]

Total assets

140.7

[3]

'

'

'

11.5

[3]

'

'

'

140.7

[3]

11.5

[3]

'

Segment Reporting Information, Additional Information [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Net sales

'

'

'

'

'

'

'

'

($16.20)

($19.10)

($29.50)

[1]

Segment operating income for fiscal 2013 and 2012 has been recast to conform to the fiscal 2014 presentation. The Company has modified its internal financial reporting of intercompany charges for research and development and intercompany royalties between Corporate and the Europe segment, which totaled $9.3 million and $11.0 million for fiscal years 2013 and 2012, respectively. There was no impact on the total Company consolidated financial results.

[2]

Total assets within the Commercial Products segment included receivables and cash advances from the Companybs insurance provider and reconstruction costs paid to date related to the Airedale fire, which totaled $45.0 million as of March 31, 2014. See Note 2 for additional information.

[3]

The increase in total assets within corporate and eliminations was primarily due to a $119.2 million reversal of deferred tax asset valuation allowances in the U.S. as of March 31, 2014. See Note 8 for additional information.

Quarterly_Financial_Data_Unaud2

Quarterly Financial Data (Unaudited) (Details) (USD $)	3 Months Ended																12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Mar. 31, 2014		Dec. 31, 2013		Sep. 30, 2013		Jun. 30, 2013		Mar. 31, 2013		Dec. 31, 2012		Sep. 30, 2012		Jun. 30, 2012		Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Selected quarterly financial information [Abstract]	'		'		'		'		'		'		'		'		'	'	'
Net sales	$390.60		$347		$364.20		$375.80		$359.60		$326.10		$339.90		$350.40		$1,477.60	$1,376	$1,577.20
Gross profit	62.3		56.8		57.2		61.9		56.1		48.2		52.6		51.7		238.2	208.6	256.6
Earnings (loss) from continuing operations	119.7	[1],[2]	-3.4	[1],[2]	5	[1],[2]	10.6	[1],[2]	-1.6	[1]	-8.4	[1]	-11.8	[1]	-1	[1]	131.9	-22.8	38
Net earnings (loss) attributable to Modine	119.4	[1],[2]	-3.6	[1],[2]	4.6	[1],[2]	10	[1],[2]	-2.1	[1]	-8.7	[1]	-12.2	[1]	-1.2	[1]	130.4	-24.2	38.5
Net earnings (loss) per share attributable to Modine shareholders [Abstract]	'		'		'		'		'		'		'		'		'	'	'
Basic (in dollars per share)	$2.51	[2]	($0.08)		$0.10		$0.21		($0.04)		($0.19)		($0.26)		($0.03)		$2.75	($0.52)	$0.83
Diluted (in dollars per share)	$2.49	[2]	($0.08)		$0.10		$0.21		($0.04)		($0.19)		($0.26)		($0.03)		$2.72	($0.52)	$0.82
Deferred tax asset, valuation allowance	119.2		'		'		'		'		'		'		'		119.2	'	'
Restructuring Charges	5.6		9.4		0.6		0.5		9.7		1.4		1.3		4.6		16.1	17	0
Impairment Charges	$1.20		$2		'		'		$0.90		$8.30		$16.70		'		$3.20	$25.90	$2.50
[1]	The quarterly financial data presented above includes restructuring expenses and impairment charges, primarily related to our Europe restructuring program and certain restructuring actions in the U.S. During fiscal 2014, restructuring expenses totaled $0.5 million, $0.6 million, $9.4 million, and $5.6 million for the quarters ended June 30, 2013, September 30, 2013, December 31, 2013, and March 31, 2014, respectively. The Company recorded impairment charges of $2.0 million and $1.2 million during the quarters ended December 31, 2013 and March 31, 2014, respectively. During fiscal 2013, restructuring expenses totaled $4.6 million, $1.3 million, $1.4 million, and $9.7 million for the quarters ended June 30, 2012, September 30, 2012, December 31, 2012, and March 31, 2013, respectively. The Company recorded impairment charges of $16.7 million, $8.3 million, and $0.9 million during the quarters ended September 30, 2012, December 31, 2012, and March 31, 2013, respectively. See Note 6 for additional information.
[2]	The quarter ended March 31, 2014 was benefited by the reversal of U.S. income tax valuation allowances totaling $119.2 million. See Note 8 for additional information.

SCHEDULE_II_VALUATION_AND_QUAL1

SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013		Mar. 31, 2012
Allowance for Doubtful Accounts [Member]	'		'		'
Valuation and Qualifying Accounts Disclosure [Line Items]	'		'		'
Balance at Beginning of Period	$0.80		$0.80		$0.80
Charged (Benefit) to Cost and Expenses	0.6		0.5		0.1
Charged to Other Accounts	0	[1]	-0.1	[1]	0	[1]
Deductions	-0.3	[2]	-0.4	[2]	-0.1	[2]
Balance at End of Period	1.1		0.8		0.8
Valuation Allowance for Deferred Tax Assets [Member]	'		'		'
Valuation and Qualifying Accounts Disclosure [Line Items]	'		'		'
Balance at Beginning of Period	172.8		146.8		129.6
Charged (Benefit) to Cost and Expenses	-113.1		7.7		1
Charged to Other Accounts	1.5	[1]	18.3	[1]	16.2	[1]
Deductions	0		0		0
Balance at End of Period	$61.20		$172.80		$146.80
[1]	Translation and other adjustments
[2]	Bad debts charged off during the year