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Pension and Postretirement Benefits (Tables) | 6 Months Ended
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Sep. 30, 2013
Pension and Postretirement Benefits [Abstract] |
Pension and Postretirement Benefit Plans | Costs for Modine's pension and postretirement benefit plans included the following components:
|  | Three months ended September 30, |  |  | Six months ended September 30, |
|  | Pension |  |  | Postretirement |  |  | Pension |  |  | Postretirement |
|  | 2013 |  |  | 2012 |  |  | 2013 |  |  | 2012 |  |  | 2013 |  |  | 2012 |  |  | 2013 |  |  | 2012 |
Service cost |  | $ | 0.2 |  |  | $ | 0.2 |  |  | $ | - |  |  | $ | - |  |  | $ | 0.3 |  |  | $ | 0.3 |  |  | $ | - |  |  | $ | - |
Interest cost |  |  | 3.3 |  |  |  | 3.4 |  |  |  | - |  |  |  | 0.1 |  |  |  | 6.5 |  |  |  | 6.7 |  |  |  | 0.1 |  |  |  | 0.2 |
Expected return on plan assets |  |  | (4.0 | ) |  |  | (4.0 | ) |  |  | - |  |  |  | - |  |  |  | (7.9 | ) |  |  | (8.0 | ) |  |  | - |  |  |  | - |
Amortization of: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unrecognized net loss |  |  | 1.5 |  |  |  | 1.2 |  |  |  | - |  |  |  | - |  |  |  | 3.1 |  |  |  | 2.5 |  |  |  | - |  |  |  | - |
Unrecognized prior service credit |  |  | - |  |  |  | - |  |  |  | (0.3 | ) |  |  | (0.4 | ) |  |  | - |  |  |  | - |  |  |  | (0.6 | ) |  |  | (0.8 | )
Net periodic benefit cost (income) |  | $ | 1.0 |  |  | $ | 0.8 |  |  | $ | (0.3 | ) |  | $ | (0.3 | ) |  | $ | 2.0 |  |  | $ | 1.5 |  |  | $ | (0.5 | ) |  | $ | (0.6 | )

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- Definition Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
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