Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2019

Dec. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in the carrying amount of Goodwill

The changes in the carrying amount of Goodwill are as follows:



	Goodwill			Accumulated Impairment Losses			Total
Balance as of December 31, 2017	$	227.2		$	(41.2	)	$	186.0
Additions	—			—			—
Purchase accounting adjustments	4.6			—			4.6
Foreign currency fluctuations	(10.1		)	2.2			(7.9		)
Balance as of December 31, 2018	$	221.7		$	(39.0	)	$	182.7
Additions	15.6			—			15.6
Foreign currency fluctuations	(2.2		)	(1.0		)	(3.2		)
Balance as of December 31, 2019	$	235.1		$	(40.0	)	$	195.1

Acquired Intangible Assets excluding Goodwill

The balances of acquired Intangible Assets, excluding Goodwill, are as follows:



	Customer Lists			Trade Names			Technology			Total
Balance as of December 31, 2019
Original cost	$	154.1		$	31.8		$	17.1		$	203.0
Accumulated amortization	(49.8		)	(8.2		)	(7.3		)	(65.3		)
Carrying amount	$	104.3		$	23.6		$	9.8		$	137.7
Weighted-average original life (in years)	15			11			11

Balance as of December 31, 2018
Original cost	$	143.1		$	30.6		$	17.4		$	191.1
Accumulated amortization	(33.8		)	(5.3		)	(5.5		)	(44.6		)
Carrying amount	$	109.3		$	25.3		$	11.9		$	146.5
Weighted-average original life (in years)	15			10			10

Estimated aggregate amortization expense of Intangible Assets

Estimated aggregate amortization expense based on the current carrying amount of amortizable Intangible Assets for each of the five succeeding years is as follows:



2020	$	20.6
2021	19.0
2022	16.9
2023	15.4
2024	13.9
Thereafter	51.9
Total	$	137.7