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Pension and Employee Benefit Plans, Changes in Benefit Obligations, Plan Assets, and Funded Status (Details) - Pension Plans [Member] - USD ($) $ in Millions | 12 Months Ended
--- | ---
Mar. 31, 2018 | Mar. 31, 2017 | Mar. 31, 2016
Change in benefit obligation [Roll Forward] |  |  |  |  |
Benefit obligation at beginning of year | $ 269.8 |  | $ 261.0 |  |
Service cost | 0.5 |  | 0.6 |  | $ 0.6
Interest cost | 9.9 |  | 9.8 |  | 11.2
Actuarial loss (gain) | 4.4 |  | (0.5) |  |
Benefits paid | (16.9) |  | (19.8) |  |
Curtailment gain | (0.3) | [1] | 0.0 |  |
Acquired obligations | 0.0 |  | 20.3 | [2] |
Effect of exchange rate changes | 6.2 |  | (1.6) |  |
Benefit obligation at end of year | 273.6 |  | 269.8 |  | 261.0
Change in plan assets [Roll Forward] |  |  |  |  |
Fair value of plan assets at beginning of year | 148.2 |  | 141.5 |  |
Actual return on plan assets | 10.4 |  | 11.0 |  |
Benefits paid | (16.9) |  | (19.8) |  |
Employer contributions | 16.0 |  | 9.5 |  |
Acquired plan assets | 0.0 |  | 6.0 | [2] |
Fair value of plan assets at end of year | 157.7 |  | 148.2 |  | $ 141.5
Funded status at end of year | (115.9) |  | (121.6) |  |
Amounts recognized in the consolidated balance sheets [Abstract] |  |  |  |  |
Current liability | (6.3) |  | (2.2) |  |
Noncurrent liability | (109.6) |  | (119.4) |  |
Total liability | (115.9) |  | (121.6) |  |
Pension plans with accumulated benefit obligations in excess of plan assets [Abstract] |  |  |  |  |
Accumulated benefit obligation | 271.8 |  | 266.8 |  |
Amounts recognized in accumulated other comprehensive loss [Abstract] |  |  |  |  |
Net actuarial loss (gain) | $ 157.9 |  | $ 156.8 |  |
[1] | During the third quarter of fiscal 2018, the Company recorded a pension curtailment gain associated with the closure of a manufacturing facility in Austria (CIS segment). See Note 5 for additional information regarding the closure of this facility.
[2] | In fiscal 2017, as a result of its acquisition of Luvata HTS, the Company acquired pension plans in Italy, Austria and the U.S. See Note 2 for additional information regarding this acquisition.

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- Definition Amount, before tax, of accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit. + 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 (j) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669686-108580 + Details
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- Definition Amount of increase (decrease) in plan assets of defined benefit plan from actual return (loss) determined by change in fair value of plan assets adjusted for contributions, benefit payments, and other expenses. + 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 (b)(1) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Amount of gain (loss) from change in actuarial assumptions which (increases) decreases benefit obligation of defined benefit plan. Assumptions include, but are not limited to, interest, mortality, employee turnover, salary, and temporary deviation from substantive plan. + 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 (a)(4) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Amount of actuarial present value of benefits attributed to service rendered by employee for defined benefit plan. + 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 (a) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Amount of payment to participant of defined benefit plan which decreases benefit obligation. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 60 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6414203&loc=d3e39716-114964 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(6) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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