General	6 Months Ended
Sep. 30, 2017
General [Abstract]
General	Note 1: General The accompanying condensed consolidated financial statements were prepared in conformity with generally accepted accounting principles (“GAAP”) in the United States applied on a basis consistent with those principles used in the preparation of the annual consolidated financial statements of Modine Manufacturing Company (“Modine” or the “Company”) for the fiscal year ended March 31, 2017, except in regards to the new accounting guidance adopted, as described below. The financial statements include all normal recurring adjustments that are, in the opinion of management, necessary for a fair statement of results for the interim periods. Results for the first six months of fiscal 2018 are not necessarily indicative of the results to be expected for the full year. These financial statements should be read in conjunction with the consolidated financial statements and related notes in Modine's Annual Report on Form 10-K for the year ended March 31, 2017. Acquisition of Luvata HTS On November 30, 2016, the Company completed the acquisition of 100 percent of the shares of multiple companies held by Luvata Heat Transfer Solutions II AB, a company incorporated in Sweden. Combined, these acquired companies represented the Luvata Heat Transfer Solutions (“Luvata HTS”) business. See Note 2 for additional information. New Accounting Guidance Derivatives and Hedging In August 2017, the Financial Accounting Standards Board (“FASB”) issued new guidance related to hedge accounting. The main objectives of the new guidance include aligning hedge accounting with companies’ risk management strategies and increasing disclosure transparency regarding both the scope and results of hedging programs. The Company plans to early adopt the new guidance for its third quarter of fiscal 2018 and does not expect this guidance will have a material impact on its consolidated financial statements. Pension Costs In March 2017, the FASB issued new guidance related to the income statement presentation of pension and postretirement costs. This guidance requires companies to continue to present the service cost component of net periodic benefit cost within the same financial statement line item as other employee compensation costs; however, other components of net benefit cost are required to be presented outside of results from operations. The Company adopted this guidance, on a retrospective basis, beginning in its first quarter of fiscal 2018. As a result, the Company recorded $0.8 million and $1.6 million of net periodic benefit cost within other income and expense for the three and six months ended September 30, 2017, respectively, and reclassified the net periodic benefit cost, exclusive of service cost, to other income and expense for the comparative periods in fiscal 2017. For the three and six months ended September 30, 2016, the Company reclassified net periodic benefit cost totaling $0.8 million ($0.3 million from cost of sales and $0.5 million from selling, general and administrative (“SG&A”) expenses) and $1.5 million ($0.6 million from cost of sales and $0.9 million from SG&A expenses), respectively, to other income and expense. Share-based Compensation In March 2016, the FASB issued new guidance to simplify several aspects of accounting for share-based payment transactions. The Company adopted this guidance beginning in its first quarter of fiscal 2018. The Company elected to account for forfeitures in the period in which they occur and recorded a cumulative-effect adjustment to equity. In addition, the Company prospectively adopted the guidance requiring all excess tax benefits or deficiencies to be recognized as income tax expense or benefit when share-based awards are settled. The provisions of this guidance did not have a material impact on the Company's consolidated financial statements. As a result of adopting this new guidance, the Company recorded a $0.4 million increase to both deferred tax assets and equity as of April 1, 2017. Leases In February 2016, the FASB issued new comprehensive lease accounting guidance that supersedes existing lease accounting guidance. Upon adoption of this new guidance, the Company will be required to recognize most leases on its balance sheet. This guidance is effective for the Company’s first quarter of fiscal 2020. The Company is currently evaluating the impact this guidance will have on its consolidated financial statements. Revenue Recognition In May 2014, the FASB issued new guidance that outlines a comprehensive model for entities to use in accounting for revenue arising from contracts with customers. The core principle of the new guidance is that companies are to recognize revenue to depict the transfer of goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The new guidance also includes a cohesive set of disclosure requirements intended to provide users of financial statements with comprehensive information about revenue arising from contracts with customers. This new guidance is effective for the Company’s first quarter of fiscal 2019 and the Company plans to adopt it using a modified-retrospective transition method. The Company is currently in the process of assessing customer contracts and evaluating contractual provisions that may result in a change in the timing of revenue recognized in comparison with current guidance. Under current guidance, the Company generally recognizes revenue when products are shipped and risk of loss has transferred to the customer. The Company is evaluating whether contractual provisions may provide an enforceable right to payment for its customized products, which may require revenue recognition prior to the product being shipped to the customer. In addition, the Company is evaluating pricing provisions contained in certain of its customer contracts to determine the appropriate timing of revenue recognition based upon the new guidance. The Company continues to evaluate the impact this new guidance will have on its consolidated financial statements and its revenue recognition policies.

Note 1: General

The accompanying condensed consolidated financial statements were prepared in conformity with generally accepted accounting principles (“GAAP”) in the United States applied on a basis consistent with those principles used in the preparation of the annual consolidated financial statements of Modine Manufacturing Company (“Modine” or the “Company”) for the fiscal year ended March 31, 2017, except in regards to the new accounting guidance adopted, as described below. The financial statements include all normal recurring adjustments that are, in the opinion of management, necessary for a fair statement of results for the interim periods. Results for the first six months of fiscal 2018 are not necessarily indicative of the results to be expected for the full year. These financial statements should be read in conjunction with the consolidated financial statements and related notes in Modine's Annual Report on Form 10-K for the year ended March 31, 2017.

Acquisition of Luvata HTS

On November 30, 2016, the Company completed the acquisition of 100 percent of the shares of multiple companies held by Luvata Heat Transfer Solutions II AB, a company incorporated in Sweden. Combined, these acquired companies represented the Luvata Heat Transfer Solutions (“Luvata HTS”) business. See Note 2 for additional information.

New Accounting Guidance

Derivatives and Hedging

In August 2017, the Financial Accounting Standards Board (“FASB”) issued new guidance related to hedge accounting. The main objectives of the new guidance include aligning hedge accounting with companies’ risk management strategies and increasing disclosure transparency regarding both the scope and results of hedging programs. The Company plans to early adopt the new guidance for its third quarter of fiscal 2018 and does not expect this guidance will have a material impact on its consolidated financial statements.

Pension Costs

In March 2017, the FASB issued new guidance related to the income statement presentation of pension and postretirement costs. This guidance requires companies to continue to present the service cost component of net periodic benefit cost within the same financial statement line item as other employee compensation costs; however, other components of net benefit cost are required to be presented outside of results from operations. The Company adopted this guidance, on a retrospective basis, beginning in its first quarter of fiscal 2018. As a result, the Company recorded $0.8 million and $1.6 million of net periodic benefit cost within other income and expense for the three and six months ended September 30, 2017, respectively, and reclassified the net periodic benefit cost, exclusive of service cost, to other income and expense for the comparative periods in fiscal 2017. For the three and six months ended September 30, 2016, the Company reclassified net periodic benefit cost totaling $0.8 million ($0.3 million from cost of sales and $0.5 million from selling, general and administrative (“SG&A”) expenses) and $1.5 million ($0.6 million from cost of sales and $0.9 million from SG&A expenses), respectively, to other income and expense.

Share-based Compensation

In March 2016, the FASB issued new guidance to simplify several aspects of accounting for share-based payment transactions. The Company adopted this guidance beginning in its first quarter of fiscal 2018. The Company elected to account for forfeitures in the period in which they occur and recorded a cumulative-effect adjustment to equity. In addition, the Company prospectively adopted the guidance requiring all excess tax benefits or deficiencies to be recognized as income tax expense or benefit when share-based awards are settled. The provisions of this guidance did not have a material impact on the Company's consolidated financial statements. As a result of adopting this new guidance, the Company recorded a $0.4 million increase to both deferred tax assets and equity as of April 1, 2017.

Leases

In February 2016, the FASB issued new comprehensive lease accounting guidance that supersedes existing lease accounting guidance. Upon adoption of this new guidance, the Company will be required to recognize most leases on its balance sheet. This guidance is effective for the Company’s first quarter of fiscal 2020. The Company is currently evaluating the impact this guidance will have on its consolidated financial statements.

Revenue Recognition

In May 2014, the FASB issued new guidance that outlines a comprehensive model for entities to use in accounting for revenue arising from contracts with customers. The core principle of the new guidance is that companies are to recognize revenue to depict the transfer of goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The new guidance also includes a cohesive set of disclosure requirements intended to provide users of financial statements with comprehensive information about revenue arising from contracts with customers. This new guidance is effective for the Company’s first quarter of fiscal 2019 and the Company plans to adopt it using a modified-retrospective transition method.

The Company is currently in the process of assessing customer contracts and evaluating contractual provisions that may result in a change in the timing of revenue recognized in comparison with current guidance. Under current guidance, the Company generally recognizes revenue when products are shipped and risk of loss has transferred to the customer. The Company is evaluating whether contractual provisions may provide an enforceable right to payment for its customized products, which may require revenue recognition prior to the product being shipped to the customer. In addition, the Company is evaluating pricing provisions contained in certain of its customer contracts to determine the appropriate timing of revenue recognition based upon the new guidance. The Company continues to evaluate the impact this new guidance will have on its consolidated financial statements and its revenue recognition policies.