Contingencies and Litigation	9 Months Ended
Dec. 31, 2016
Contingencies and Litigation [Abstract]
Contingencies and Litigation	Note 15: Contingencies and Litigation Environmental The United States Environmental Protection Agency has designated the Company as a potentially responsible party for remediation of three sites. These sites are: 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; however, they 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 its relatively small portion of contributed materials. The Company has recorded environmental investigation and remediation accruals related to subsurface contamination at its former manufacturing facility in the Netherlands and groundwater contamination at its manufacturing facility in Brazil. In addition, the Company has recorded an environmental accrual for investigative work related to a previously-owned manufacturing facility in the United States, along with accruals for lesser environmental matters at certain other facilities 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. In addition, the Company assumed certain environmental obligations as a result of the Luvata HTS acquisition. At both December 31, 2016 and March 31, 2016, the accruals for these environmental matters totaled $5.1 million. As additional information becomes available, the Company will re-assess the liabilities related to these matters and revise the estimated accruals, if necessary. Based upon currently available information, the Company believes 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 the Company’s subsidiary in Brazil (“Modine Brazil”), seeking remediation and certain other damages as a result of contamination allegedly attributable to its operations. The Company is defending this suit and believes that the ultimate outcome of this matter will not be material. Brazil Antitrust Investigation During fiscal 2015, Brazil’s Administrative Council for Economic Defense (CADE) provided formal notice to Modine Brazil of an administrative investigation regarding alleged violations of Brazil’s antitrust regulations by Modine Brazil and certain of its employees during a period of time at least seven years prior to the notice. As of March 31, 2016, the Company accrued $2.8 million (BRL 10 million) related to this matter. During the second quarter of fiscal 2017, the Company increased this accrual to $4.7 million (BRL 15 million). As a result, the Company recorded a $1.6 million (BRL 5 million) charge within SG&A expenses. During the third quarter of fiscal 2017, the Company reached agreement to settle the matter with CADE for $4.6 million (BRL 15 million) and expects to remit payment in early fiscal 2018. 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.

Note 15: Contingencies and Litigation

Environmental

The United States Environmental Protection Agency has designated the Company as a potentially responsible party for remediation of three sites. These sites are: 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; however, they 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 its relatively small portion of contributed materials.

The Company has recorded environmental investigation and remediation accruals related to subsurface contamination at its former manufacturing facility in the Netherlands and groundwater contamination at its manufacturing facility in Brazil. In addition, the Company has recorded an environmental accrual for investigative work related to a previously-owned manufacturing facility in the United States, along with accruals for lesser environmental matters at certain other facilities 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. In addition, the Company assumed certain environmental obligations as a result of the Luvata HTS acquisition. At both December 31, 2016 and March 31, 2016, the accruals for these environmental matters totaled $5.1 million. As additional information becomes available, the Company will re-assess the liabilities related to these matters and revise the estimated accruals, if necessary. Based upon currently available information, the Company believes 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 the Company’s subsidiary in Brazil (“Modine Brazil”), seeking remediation and certain other damages as a result of contamination allegedly attributable to its operations. The Company is defending this suit and believes that the ultimate outcome of this matter will not be material.

Brazil Antitrust Investigation

During fiscal 2015, Brazil’s Administrative Council for Economic Defense (CADE) provided formal notice to Modine Brazil of an administrative investigation regarding alleged violations of Brazil’s antitrust regulations by Modine Brazil and certain of its employees during a period of time at least seven years prior to the notice. As of March 31, 2016, the Company accrued $2.8 million (BRL 10 million) related to this matter. During the second quarter of fiscal 2017, the Company increased this accrual to $4.7 million (BRL 15 million). As a result, the Company recorded a $1.6 million (BRL 5 million) charge within SG&A expenses. During the third quarter of fiscal 2017, the Company reached agreement to settle the matter with CADE for $4.6 million (BRL 15 million) and expects to remit payment in early fiscal 2018.

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.