
	Dx		BLS		Total

Balance as of December 31, 2023	$	4,813.9	$	1,328.6	$	6,142.5
Goodwill acquired during the period	141.7		—		141.7



Foreign currency impact and other adjustments to goodwill	(10.7)		(53.3)		(64.0)
Balance as of June 30, 2024	$	4,944.9	$	1,275.3	$	6,220.2

The Company assesses goodwill and indefinite-lived intangibles for impairment at least annually or whenever events or changes in circumstances indicate that the carrying amount of such assets may not be recoverable. The Company recognizes an impairment charge for the amount by which the reporting unit's carrying amount exceeds its fair value.

Although the Company believes that the current assumptions and estimates used in its goodwill analysis are reasonable, supportable, and appropriate, the Company's business could be impacted by unfavorable changes, including those that impact the existing assumptions used in the impairment analysis. Various factors could reasonably be expected to unfavorably impact existing assumptions: primarily, a worsening economic environment and protracted economic downturn and related impacts, including delays in revenue from new customers; increases in customer termination activity; or increases in operating costs. Accordingly, there can be no assurance that the estimates and assumptions made for the purposes of the goodwill impairment analysis will prove to be accurate predictions of future performance.

The Company will continue to monitor the financial performance of, and assumptions for, its reporting units. A significant increase in the discount rate, decrease in the revenue and terminal growth rates, decreased operating margin, or substantial reductions in end markets and volume assumptions, could have a negative impact on the estimated fair value of the reporting units. A future impairment charge for goodwill or intangible assets could have a material effect on the Company's consolidated financial position and results of operations.

The components of identifiable intangible assets were as follows:


	June 30, 2024						December 31, 2023
	Gross Carrying Amount		Accumulated Amortization		Net		Gross Carrying Amount		Accumulated Amortization		Net
Customer relationships	$	3,947.8	$	(1,444.1)	$	2,503.7	$	3,868.6	$	(1,367.2)	$	2,501.4
Patents, licenses, and technology	520.3		(283.1)		237.2		526.6		(273.3)		253.3
Non-compete agreements	152.4		(72.5)		79.9		130.3		(60.4)		69.9


Canadian licenses	495.1		—		495.1		498.8		—		498.8
Other	34.1		(18.0)		16.1		34.1		(15.5)		18.6
	5,149.7		(1,817.7)		3,332.0		5,058.4		(1,716.4)		3,342.0

Amortization of intangible assets for the three and six months ended June 30, 2024, and 2023, was $62.2 and $51.5 and $122.3 and $104.9, respectively. The amortization expense for the net carrying amount of intangible assets is estimated to be $125.0 for the remainder of fiscal 2024, $237.2 in fiscal 2025, $228.2 in fiscal 2026, $216.9 in fiscal 2027, $209.1 in fiscal 2028, and $1,735.8 thereafter.

LabCorp Diagnostics [Member]

Goodwill [Line Items]

Balance as of January 1

4,813.9

Adjustments to goodwill

(10.7)

Balance at end of period

$ 4,944.9

4,944.9

Goodwill, Acquired During Period

141.7

Covance Drug Development [Member]