Goodwill and Other Intangible Assets

9 Months Ended

Sep. 30, 2021

Goodwill And Intangible Assets Disclosure [Abstract]

6. Goodwill and Other Intangible Assets

The carrying amount of goodwill at September 30, 2021 and December 31, 2020 were as follows:

	Business Services			Marketing Solutions			Total
Net book value as of December 31, 2020
Goodwill	$	2,076.1		$	519.5		$	2,595.6
Accumulated impairment losses		(1,930.9	)		(254.1	)		(2,185.0	)
Total		145.2			265.4			410.6
Foreign exchange		(3.8	)		—			(3.8	)
Net book value as of September 30, 2021
Goodwill		2,067.0			519.5			2,586.5
Accumulated impairment losses		(1,925.6	)		(254.1	)		(2,179.7	)
Total	$	141.4		$	265.4		$	406.8

The components of other intangible assets at September 30, 2021 and December 31, 2020 were as follows:

	September 30, 2021							December 31, 2020
	Gross							Gross
	Carrying		Accumulated			Net Book		Carrying		Accumulated			Net Book
	Amount		Amortization			Value		Amount		Amortization			Value

Client relationships	$	412.7	$	(369.6	)	$	43.1	$	417.0	$	(361.1	)	$	55.9
Trade names		28.5		(17.1	)		11.4		29.1		(16.2	)		12.9
Trademarks, licenses and agreements		23.2		(23.2	)		—		23.2		(23.2	)		—
Patents		2.0		(2.0	)		—		2.0		(2.0	)		—
Total amortizable other intangible assets		466.4		(411.9	)		54.5		471.3		(402.5	)		68.8

Amortization expense for other intangible assets was $4.7 million and $14.2 million for the three and nine months ended September 30, 2021 and was $4.8 million and $14.5 million for the three and nine months ended September 30, 2020.