GOODWILL AND INTANGIBLE ASSETS (Tables)

12 Months Ended

Dec. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

The changes in the carrying amount of goodwill for the years ended December 31, 2019 and 2018 were as follows (amounts in millions):



Goodwill - December 31, 2017	$	644.5
Initial goodwill associated with 2018 business combinations	1,130.9
Adjustments to 2018 business combinations	(37.9		)
Adjustments to 2017 business combinations	22.2
Foreign currency translation adjustments	(21.7		)
Goodwill - December 31, 2018	1,738.0
Initial goodwill associated with 2019 business combinations	28.8
Adjustments to 2018 business combinations	47.8
Foreign currency translation adjustments	(46.0		)
Goodwill - December 31, 2019	$	1,768.6

Schedule of Finite-Lived Intangible Assets

The following tables summarize the Company’s intangible assets (amounts in millions):



		December 31, 2019						December 31, 2018
	Amortization Period	Gross Asset Cost		Accumulated Amortization		Net Book Value		Gross Asset Cost		Accumulated Amortization		Net Book Value
Customer lists	3-20 years	$	781.1	$	313.7	$	467.4	$	757.7	$	233.7	$	524.0
Non-compete agreements	3-5 years	4.7		4.6		0.1		4.7		4.6		0.1
Intellectual property	10 years	38.3		15.4		22.9		38.6		11.3		27.3
Tradename	1-3 years	6.2		5.9		0.3		6.0		5.0		1.0
		$	830.3	$	339.6	$	490.7	$	807.0	$	254.6	$	552.4

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

Estimated amortization expense related to intangible assets subject to amortization at December 31, 2019 in each of the years subsequent to December 31, 2019 is as follows (amounts in millions):



	Total
2020	$	89.1
2021	84.6
2022	70.1
2023	56.7
2024	50.6
2025 and beyond	139.6
Total	$	490.7