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Goodwill and Intangible Assets (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Mar. 31, 2020
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 166.1
Effect of exchange rate changes	0.9
Goodwill, ending balance	167.0
Intangible Assets [Abstract]
Gross carrying value	143.8		$ 142.7
Accumulated amortization	(38.7)		(36.4)
Net intangible assets	105.1		106.3
Amortization expense	2.1	$ 2.2
Estimated Future Amortization Expense [Abstract]
Remainder of fiscal 2021	6.3
2022	8.0
2023	8.0
2024	8.0
2025	8.0
2026	8.0
CIS [Member]
Goodwill [Roll Forward]
Goodwill, beginning balance	152.6
Effect of exchange rate changes	0.9
Goodwill, ending balance	153.5
BHVAC [Member]
Goodwill [Roll Forward]
Goodwill, beginning balance	13.5
Effect of exchange rate changes	0.0
Goodwill, ending balance	13.5
Customer Relationships [Member]
Intangible Assets [Abstract]
Gross carrying value	61.4		60.8
Accumulated amortization	(13.7)		(12.6)
Net intangible assets	47.7		48.2
Trade Names [Member]
Intangible Assets [Abstract]
Gross carrying value	58.5		58.3
Accumulated amortization	(16.9)		(16.2)
Net intangible assets	41.6		42.1
Acquired Technology [Member]
Intangible Assets [Abstract]
Gross carrying value	23.9		23.6
Accumulated amortization	(8.1)		(7.6)
Net intangible assets	$ 15.8		$ 16.0

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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.

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in remainder of current fiscal year.

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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