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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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 ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Finite-Lived Intangible Assets
Amortization expense	$ 11,700,000	$ 9,600,000	$ 21,800,000	$ 18,400,000
Maximum
Finite-Lived Intangible Assets
Government grants					$ 5,000,000
Government grants \| Minimum
Finite-Lived Intangible Assets
Finite lived intangible assets useful life (in years)			10 years
Government grants \| Maximum
Finite-Lived Intangible Assets
Finite lived intangible assets useful life (in years)			50 years