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Goodwill and Intangible Assets (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Mar. 31, 2018
Goodwill [Roll Forward] |  |  |
Goodwill, beginning balance | $ 173.8 |  |
Effect of exchange rate changes | (3.4) |  |
Goodwill, ending balance | 170.4 |  |
Amortized intangible assets [Abstract] |  |  |
Gross carrying value | 146.4 |  | $ 150.0
Accumulated amortization | (21.7) |  | (20.1)
Net intangible assets | 124.7 |  | 129.9
Amortization expense | 2.3 | $ 2.4 |
Estimated future amortization expense [Abstract] |  |  |
2020 | 9.0 |  |
2021 | 9.0 |  |
2022 | 8.0 |  |
2023 | 8.0 |  |
2024 | 8.0 |  |
VTS [Member] |  |  |
Goodwill [Roll Forward] |  |  |
Goodwill, beginning balance | 0.5 |  |
Effect of exchange rate changes | 0.0 |  |
Goodwill, ending balance | 0.5 |  |
BHVAC [Member] |  |  |
Goodwill [Roll Forward] |  |  |
Goodwill, beginning balance | 15.0 |  |
Effect of exchange rate changes | (0.7) |  |
Goodwill, ending balance | 14.3 |  |
CIS [Member] |  |  |
Goodwill [Roll Forward] |  |  |
Goodwill, beginning balance | 158.3 |  |
Effect of exchange rate changes | (2.7) |  |
Goodwill, ending balance | 155.6 |  |
Customer Relationships [Member] |  |  |
Amortized intangible assets [Abstract] |  |  |
Gross carrying value | 62.5 |  | 64.2
Accumulated amortization | (6.4) |  | (5.7)
Net intangible assets | 56.1 |  | 58.5
Trade Names [Member] |  |  |
Amortized intangible assets [Abstract] |  |  |
Gross carrying value | 59.5 |  | 60.6
Accumulated amortization | (11.3) |  | (10.8)
Net intangible assets | 48.2 |  | 49.8
Acquired Technology [Member] |  |  |
Amortized intangible assets [Abstract] |  |  |
Gross carrying value | 24.4 |  | 25.2
Accumulated amortization | (4.0) |  | (3.6)
Net intangible assets | $ 20.4 |  | $ 21.6

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 + Details
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