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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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of accumulated impairment loss for 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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Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

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The cash outflow to acquire asset without physical form usually arising from contractual or other legal rights, excluding goodwill.

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The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

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Goodwill and Intangible Assets - Additional Information (Details) - USD ($) $ in Millions		3 Months Ended
	Mar. 09, 2020	Mar. 31, 2020	Sep. 30, 2019	Mar. 31, 2019	Dec. 31, 2019
Indefinite-lived Intangible Assets
Accumulated goodwill impairment losses					$ 46.6
Amortization of expense of intangible assets		$ 29.4		$ 28.4
Research and development		17.5		$ 10.8
Electronics
Indefinite-lived Intangible Assets
Payments to acquire intangible assets	$ 6.3
Research and development	$ 4.5
Tradenames
Indefinite-lived Intangible Assets
Finite lived intangible asset useful life			15 years
Tradenames
Indefinite-lived Intangible Assets
Indefinite lived intangible assets		$ 68.0			$ 104.0