Goodwill and Other Intangible Assets Changes in Carrying Value of Goodwill (Tables)

12 Months Ended

Dec. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in Carrying Value of Goodwill

The changes in the carrying value of goodwill for our reportable segments, IAN and DXTRA, for the years ended December 31, 2021 and 2020 are listed below.

	IAN		DXTRA		Total 1
Balance as of December 31, 2019	$	4,218.1	$	676.3	$	4,894.4
Acquisitions	23.5		0.5		24.0
Foreign currency and other	22.9		4.2		27.1
Balance as of December 31, 2020	$	4,264.5	$	681.0	$	4,945.5
Dispositions	(0.2)		—		(0.2)
Foreign currency and other	(32.7)		(3.9)		(36.6)
Balance as of December 31, 2021	$	4,231.6	$	677.1	$	4,908.7