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Acquisitions

12 Months Ended

Dec. 31, 2021

Business Combination and Asset Acquisition [Abstract]

The following is a summary of the Company's acquisitions (in millions).


	Year Ended December 31,
	2021		2020		2019
Number of businesses acquired	Three		Four		Two
Aggregate purchase price	$	221.3	$	186.0	$	113.0

Maximum earn out	15.0		19.0		—
Earn out liability at December 31, 2021	7.0		8.1		—
Status of purchase accounting	Open		Closed		Closed

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Generally, working capital adjustments account for the difference between the aggregate purchase price and cash paid, net of cash acquired in the accompanying statements of cash flows.

These acquisitions increased the Company's investment in IT consulting in its Federal Government and Commercial segments. Some of these acquisitions include additional contingent consideration (earn out) to be paid in cash based on the achievement of certain targets. None of these acquisitions were material individually or in the aggregate; therefore, we did not present any pro forma results for these acquisitions.