GOODWILL AND INTANGIBLE ASSETS (Tables)

12 Months Ended

Dec. 31, 2020

The changes in the carrying amount of goodwill (net of accumulated amortization) for the years ended December 31, 2020 and 2019 are as follows:


	Dx				DD				Total
	December 31, 2020		December 31, 2019		December 31, 2020		December 31, 2019		December 31, 2020		December 31, 2019
Balance as of January 1	$	3,721.5	$	3,638.8	$	4,143.5	$	3,721.5	$	7,865.0	$	7,360.3
Goodwill acquired during the year	75.8		80.2		90.4		414.3		166.2		494.5
Dispositions	—		—		—		(12.6)		—		(12.6)
Impairment	(3.7)		—		(418.7)		—		(422.4)		—
Foreign currency impact and other adjustments to goodwill	6.6		2.5		136.1		20.3		142.7		22.8
Balance at end of year	$	3,800.2	$	3,721.5	$	3,951.3	$	4,143.5	$	7,751.5	$	7,865.0

The components of identifiable intangible assets are as follows:


	December 31, 2020						December 31, 2019
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Customer relationships	$	4,643.3	$	(1,534.9)	$	3,108.4	$	4,441.7	$	(1,329.5)	$	3,112.2
Patents, licenses and technology	434.7		(252.6)		182.1		453.6		(235.7)		217.9
Non-compete agreements	109.6		(70.7)		38.9		90.9		(60.5)		30.4
Trade names	401.8		(263.9)		137.9		408.2		(219.9)		188.3
Land use rights	10.9		(6.9)		4.0		10.9		(5.5)		5.4
Canadian licenses	489.8		—		489.8		480.3		—		480.3
	$	6,090.1	$	(2,129.0)	$	3,961.1	$	5,885.6	$	(1,851.1)	$	4,034.5

A summary of amortizable intangible assets acquired during 2020, and their respective weighted average amortization periods are as follows:


	Amount		Weighted Average Amortization Period
Customer relationships	$	102.4	14.1
Trade name	0.2		2.4

Non-compete agreements	18.7		5.0
	$	121.3	12.7