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 consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Business Acquisitions (Narrative) (Details) - USD ($) $ in Millions			3 Months Ended	9 Months Ended
	Nov. 22, 2021	Jul. 01, 2021	Sep. 30, 2022	Sep. 30, 2022
Business Acquisition [Line Items]
Amortization of intangible assets			$ 1.4	$ 4.1
ECM Associated, LLC
Business Acquisition [Line Items]
Percentage of equity interests acquired		80.00%
Total purchase price (fair value of consideration)		$ 141.3
NEHDS
Business Acquisition [Line Items]
Percentage of equity interests acquired	100.00%
Total purchase price (fair value of consideration)	$ 62.3