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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Amount of assets, excluding financial assets and goodwill, that lack physical substance, having a projected indefinite period of benefit, acquired at the acquisition date.

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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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Carrying amount as of the balance sheet date of amounts due under the terms of governmental, corporate, or foundation grants.

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Goodwill and Intangible Assets - Narratives (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Finite-lived and Indefinite-lived Intangible Assets
Intangible assets amortization expense	$ 38,900,000	$ 45,700,000	$ 39,800,000
Minimum
Finite-lived and Indefinite-lived Intangible Assets
Finite lived intangible asset useful life	2 years
Minimum \| Government grants
Finite-lived and Indefinite-lived Intangible Assets
Finite lived intangible asset useful life	10 years
Maximum
Finite-lived and Indefinite-lived Intangible Assets
Finite lived intangible asset useful life	15 years
Government grants	$ 5,000,000
Maximum \| Government grants
Finite-lived and Indefinite-lived Intangible Assets
Finite lived intangible asset useful life	50 years
AXC \| Trademarks and trade names
Finite-lived and Indefinite-lived Intangible Assets
Indefinite lived intangible asset		$ 39,000,000.0	$ 55,000,000.0