Description of Business and Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2018

Accounting Policies [Abstract]

Property, Plant and Equipment

The estimated useful lives of property and equipment are as follows:

Classification	Estimated Useful Lives
Machinery and equipment	5 to 10 years
Building and leasehold improvements	5 to 25 years
Computer and data processing equipment	3 to 5 years
Computer software	3 to 5 years
Furniture and fixtures	5 to 10 years

Property and equipment consists of the following:

	December 31,
(in millions)	2018			2017
Building and leasehold improvements	$	129.1		$	123.0
Computer and data processing equipment	105.4			116.4
Machinery and equipment	44.1			45.6
Land	27.7			27.7
Construction in progress	24.5			17.9
Computer software	22.2			9.6
Furniture and fixtures	18.9			22.7
Property and equipment, gross	371.9			362.9
Less: accumulated depreciation	(215.8		)	(201.8		)
Property and equipment, net	$	156.1		$	161.1

Schedule of Finite-Lived Intangible Assets

The following table shows estimated useful lives of definite-lived intangible assets:

Classification	Estimated Useful Lives
Customer relationships and contracts	3 to 14 years
Trade name	generally 20 years
Internally developed software	3 to 5 years
Other	1 to 10 years

A summary of intangible assets is as follows:

(in millions)
December 31, 2018	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Customer relationships and contracts	$	2,071.0	$	(1,625.5	)	$	445.5
Trade name	422.1		(237.3		)	184.8
Internally developed software	205.8		(125.4		)	80.4
Other	3.7		(2.2		)	1.5
Total	$	2,702.6	$	(1,990.4	)	$	712.2
December 31, 2017
Customer relationships and contracts	$	2,106.8	$	(1,490.8	)	$	616.0
Trade name	422.2		(216.3		)	205.9
Internally developed software	162.6		(89.6		)	73.0
Other	2.9		(0.8		)	2.1
Total	$	2,694.5	$	(1,797.5	)	$	897.0