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Segment and Geographic Information (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2017 | Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2017 | Mar. 31, 2016 | Mar. 31, 2015
Net sales, gross profit, operating income and total assets by segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  | $ 488.3 | $ 349.8 | $ 317.7 | $ 347.2 | $ 343.7 | $ 328.7 | $ 334.0 | $ 346.1 | $ 1,503.0 | $ 1,352.5 | $ 1,496.4
Gross profit |  | 84.9 | 58.7 | 47.7 | 62.0 | 62.2 | 58.6 | 45.7 | $ 57.0 | $ 253.3 | $ 223.5 | $ 246.5
Gross profit (% of sales) |  |  |  |  |  |  |  |  |  | 16.90% | 16.50% | 16.50%
Operating income (loss) |  |  |  |  |  |  |  |  |  | $ 39.4 | $ (7.5) | $ 52.7
Total assets |  | 1,449.5 |  |  |  | 920.9 |  |  |  | 1,449.5 | 920.9 |
Non tax gain (loss) related to pension settlement |  |  |  |  |  | 1.8 | $ 1.1 | $ 39.2 |  |  | (42.1) |
Acquisition and integration related costs |  | 3.2 | $ 7.2 | $ 3.0 | $ 1.4 |  |  |  |  | 14.8 |  |
Segment Reporting Information, Additional Information [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Total capital expenditures |  |  |  |  |  |  |  |  |  | 64.4 | 62.8 | 58.3
Total depreciation and amortization expense |  |  |  |  |  |  |  |  |  | 58.3 | 50.2 | 51.6
Total property, plant and equipment |  | 459.0 |  |  |  | 338.6 |  |  |  | 459.0 | 338.6 |
Pension [Member] |  |  |  |  |  |  |  |  |  |  |  |
Net sales, gross profit, operating income and total assets by segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Non tax gain (loss) related to pension settlement |  |  |  |  |  |  |  |  |  |  | (42.1) |
Pension [Member] | Selling, General and Administrative Expenses [Member] |  |  |  |  |  |  |  |  |  |  |  |
Net sales, gross profit, operating income and total assets by segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Non tax gain (loss) related to pension settlement |  |  |  |  |  |  |  |  |  |  | (33.3) |
Pension [Member] | Cost of Sales [Member] |  |  |  |  |  |  |  |  |  |  |  |
Net sales, gross profit, operating income and total assets by segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Non tax gain (loss) related to pension settlement |  |  |  |  |  |  |  |  |  |  | (8.8) |
Luvata HTS [Member] | Selling, General and Administrative Expenses [Member] |  |  |  |  |  |  |  |  |  |  |  |
Net sales, gross profit, operating income and total assets by segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Acquisition and integration related costs |  |  |  |  |  |  |  |  |  | 14.8 |  |
Operating Segments [Member] |  |  |  |  |  |  |  |  |  |  |  |
Net sales, gross profit, operating income and total assets by segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  | 1,519.1 | 1,370.0 | 1,512.6
Gross profit |  |  |  |  |  |  |  |  |  | $ 260.0 | $ 234.6 | $ 245.2
Gross profit (% of sales) |  |  |  |  |  |  |  |  |  | 17.10% | 17.10% | 16.20%
Operating income (loss) |  |  |  |  |  |  |  |  |  | $ 92.1 | $ 64.2 | $ 78.5
Operating Segments [Member] | Americas [Member] |  |  |  |  |  |  |  |  |  |  |  |
Net sales, gross profit, operating income and total assets by segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  | 534.0 | 585.5 | 666.9
Gross profit |  |  |  |  |  |  |  |  |  | $ 86.6 | $ 100.1 | $ 109.1
Gross profit (% of sales) |  |  |  |  |  |  |  |  |  | 16.20% | 17.10% | 16.30%
Operating income (loss) |  |  |  |  |  |  |  |  |  | $ 26.7 | $ 36.2 | $ 33.4
Total assets |  | 282.9 |  |  |  | 267.2 |  |  |  | 282.9 | 267.2 |
Segment Reporting Information, Additional Information [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Total capital expenditures |  |  |  |  |  |  |  |  |  | 26.3 | 26.7 | 30.2
Total depreciation and amortization expense |  |  |  |  |  |  |  |  |  | 22.7 | 22.1 | 21.3
Operating Segments [Member] | Europe [Member] |  |  |  |  |  |  |  |  |  |  |  |
Net sales, gross profit, operating income and total assets by segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  | 524.3 | 524.1 | 578.2
Gross profit |  |  |  |  |  |  |  |  |  | $ 80.9 | $ 68.1 | $ 68.7
Gross profit (% of sales) |  |  |  |  |  |  |  |  |  | 15.40% | 13.00% | 11.90%
Operating income (loss) |  |  |  |  |  |  |  |  |  | $ 37.1 | $ 13.3 | $ 25.7
Total assets |  | 269.4 |  |  |  | 301.9 |  |  |  | 269.4 | 301.9 |
Segment Reporting Information, Additional Information [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Total capital expenditures |  |  |  |  |  |  |  |  |  | 24.7 | 24.8 | 21.5
Total depreciation and amortization expense |  |  |  |  |  |  |  |  |  | 16.5 | 18.0 | 19.8
Operating Segments [Member] | Asia [Member] |  |  |  |  |  |  |  |  |  |  |  |
Net sales, gross profit, operating income and total assets by segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  | 111.5 | 79.0 | 81.2
Gross profit |  |  |  |  |  |  |  |  |  | $ 18.7 | $ 12.2 | $ 11.5
Gross profit (% of sales) |  |  |  |  |  |  |  |  |  | 16.80% | 15.50% | 14.20%
Operating income (loss) |  |  |  |  |  |  |  |  |  | $ 7.7 | $ 0.8 | $ 0.3
Total assets |  | 111.3 |  |  |  | 104.0 |  |  |  | 111.3 | 104.0 |
Segment Reporting Information, Additional Information [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Total capital expenditures |  |  |  |  |  |  |  |  |  | 8.5 | 6.2 | 3.8
Total depreciation and amortization expense |  |  |  |  |  |  |  |  |  | 7.0 | 6.5 | 7.2
Operating Segments [Member] | CIS [Member] |  |  |  |  |  |  |  |  |  |  |  |
Net sales, gross profit, operating income and total assets by segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  | 177.7 | 0.0 | 0.0
Gross profit |  |  |  |  |  |  |  |  |  | $ 26.0 | $ 0.0 | $ 0.0
Gross profit (% of sales) |  |  |  |  |  |  |  |  |  | 14.60% | 0.00% | 0.00%
Operating income (loss) |  |  |  |  |  |  |  |  |  | $ 7.5 | $ 0.0 | $ 0.0
Total assets |  | 576.0 |  |  |  | 0.0 |  |  |  | 576.0 | 0.0 |
Segment Reporting Information, Additional Information [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Total capital expenditures |  |  |  |  |  |  |  |  |  | 3.4 | 0.0 | 0.0
Total depreciation and amortization expense |  |  |  |  |  |  |  |  |  | 7.9 | 0.0 | 0.0
Operating Segments [Member] | BHVAC [Member] |  |  |  |  |  |  |  |  |  |  |  |
Net sales, gross profit, operating income and total assets by segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  | 171.6 | 181.4 | 186.3
Gross profit |  |  |  |  |  |  |  |  |  | $ 47.8 | $ 54.2 | $ 55.9
Gross profit (% of sales) |  |  |  |  |  |  |  |  |  | 27.80% | 29.90% | 30.00%
Operating income (loss) |  |  |  |  |  |  |  |  |  | $ 13.1 | $ 13.9 | $ 19.1
Total assets |  | 85.2 |  |  |  | 99.0 |  |  |  | 85.2 | 99.0 |
Segment Reporting Information, Additional Information [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Total capital expenditures |  |  |  |  |  |  |  |  |  | 1.5 | 5.1 | 2.8
Total depreciation and amortization expense |  |  |  |  |  |  |  |  |  | 4.2 | 3.6 | 3.3
Corporate and Eliminations [Member] |  |  |  |  |  |  |  |  |  |  |  |
Net sales, gross profit, operating income and total assets by segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  | (16.1) | (17.5) | (16.2)
Gross profit | [1] |  |  |  |  |  |  |  |  | $ (6.7) | $ (11.1) | $ 1.3
Gross profit (% of sales) | [1] |  |  |  |  |  |  |  |  | 0.00% | 0.00% | 0.00%
Operating income (loss) | [1] |  |  |  |  |  |  |  |  | $ (52.7) | $ (71.7) | $ (25.8)
Total assets |  | 124.7 |  |  |  | 148.8 |  |  |  | 124.7 | 148.8 |
Corporate and Eliminations [Member] | Cost of Sales [Member] |  |  |  |  |  |  |  |  |  |  |  |
Net sales, gross profit, operating income and total assets by segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Inventory step-up cost |  |  |  |  |  |  |  |  |  | 4.3 |  |
Reportable Geographical Components [Member] | United States [Member] |  |  |  |  |  |  |  |  |  |  |  |
Net sales, gross profit, operating income and total assets by segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  | 657.8 | 627.6 | 669.3
Segment Reporting Information, Additional Information [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Total property, plant and equipment |  | 124.7 |  |  |  | 92.5 |  |  |  | 124.7 | 92.5 |
Reportable Geographical Components [Member] | Hungary [Member] |  |  |  |  |  |  |  |  |  |  |  |
Net sales, gross profit, operating income and total assets by segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  | 145.6 | 145.9 | 161.0
Segment Reporting Information, Additional Information [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Total property, plant and equipment |  | 37.7 |  |  |  | 31.4 |  |  |  | 37.7 | 31.4 |
Reportable Geographical Components [Member] | Germany [Member] |  |  |  |  |  |  |  |  |  |  |  |
Net sales, gross profit, operating income and total assets by segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  | 130.1 | 155.3 | 193.8
Segment Reporting Information, Additional Information [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Total property, plant and equipment |  | 28.9 |  |  |  | 32.1 |  |  |  | 28.9 | 32.1 |
Reportable Geographical Components [Member] | Austria [Member] |  |  |  |  |  |  |  |  |  |  |  |
Net sales, gross profit, operating income and total assets by segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  | 125.2 | 113.1 | 118.7
Segment Reporting Information, Additional Information [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Total property, plant and equipment |  | 44.3 |  |  |  | 44.2 |  |  |  | 44.3 | 44.2 |
Reportable Geographical Components [Member] | Italy [Member] |  |  |  |  |  |  |  |  |  |  |  |
Net sales, gross profit, operating income and total assets by segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  | 94.4 | 44.1 | 40.6
Segment Reporting Information, Additional Information [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Total property, plant and equipment |  | 55.8 |  |  |  | 20.3 |  |  |  | 55.8 | 20.3 |
Reportable Geographical Components [Member] | Mexico [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information, Additional Information [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Total property, plant and equipment |  | 47.0 |  |  |  | 30.9 |  |  |  | 47.0 | 30.9 |
Reportable Geographical Components [Member] | China [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information, Additional Information [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Total property, plant and equipment |  | 40.0 |  |  |  | 33.6 |  |  |  | 40.0 | 33.6 |
Reportable Geographical Components [Member] | Other [Member] |  |  |  |  |  |  |  |  |  |  |  |
Net sales, gross profit, operating income and total assets by segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  | 349.9 | 266.5 | $ 313.0
Segment Reporting Information, Additional Information [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Total property, plant and equipment |  | $ 80.6 |  |  |  | $ 53.6 |  |  |  | $ 80.6 | $ 53.6 |
[1] | During fiscal 2017, the Company recorded $14.8 million of costs incurred directly related to the acquisition and integration of Luvata HTS within SG&A expenses at Corporate. In addition, as a result of purchase accounting for the Luvata HTS acquisition, the Company wrote up acquired inventory to its estimated fair value and charged the write-up to cost of sales as the underlying inventory was sold. The Company recorded $4.3 million in cost of sales related to this inventory step-up at Corporate, as the impact of this purchase accounting adjustment is excluded from the Company's measure of segment operating performance. During fiscal 2016, the Company recorded pension settlement losses of $42.1 million at Corporate, within SG&A expenses ($33.3 million) and cost of sales ($8.8 million). See Note 16 for additional information about the Company's pension plans.

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