Goodwill and Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of Change in Goodwill

The following is a summary of the change in goodwill from December 31, 2016 through June 30, 2017, both in total and as allocated to the Company’s operating segments:

	Risk Assessment			Decision Analytics		Total
Goodwill at December 31, 2016 (1)	$	71.3		$	2,506.8	$	2,578.1
Current year acquisitions		35.2			42.2		77.4
Purchase accounting reclassification		(1.6	)		0.4		(1.2	)
Foreign currency translation		1.8			77.7		79.5
Goodwill at June 30, 2017 (1)	$	106.7		$	2,627.1	$	2,733.8

______________________

(1) These balances are net of accumulated impairment charges of $3.2 million that occurred prior to December 31, 2016.

Intangible Assets and Related Accumulated Amortization

The Company’s intangible assets and related accumulated amortization consisted of the following:

	Weighted Average Useful Life	Cost		Accumulated Amortization			Net
June 30, 2017
Technology-based	7 years	$	327.6	$	(208.5	)	$	119.1
Marketing-related	17 years		238.7		(54.6	)		184.1
Contract-based	6 years		5.0		(5.0	)		—
Customer-related	14 years		526.6		(149.3	)		377.3
Database-related	20 years		416.0		(44.5	)		371.5
Total intangible assets		$	1,513.9	$	(461.9	)	$	1,052.0
December 31, 2016
Technology-based	7 years	$	310.9	$	(196.6	)	$	114.3
Marketing-related	17 years		227.5		(47.5	)		180.0
Contract-based	6 years		5.0		(5.0	)		—
Customer-related	14 years		483.1		(128.5	)		354.6
Database-related	20 years		393.9		(32.0	)		361.9
Total intangible assets		$	1,420.4	$	(409.6	)	$	1,010.8

Estimated Amortization Expense

Estimated amortization expense for the remainder of 2017 and the years through 2022 and thereafter for intangible assets subject to amortization is as follows:

Year	Amount
2017	$	48.6
2018		96.9
2019		95.6
2020		93.7
2021		83.3
2022 and thereafter		633.9
	$	1,052.0