Goodwill and Other Intangible Assets, Net (Tables)

12 Months Ended

Dec. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Finite-Lived Intangible Assets

Intangible assets with definite lives are generally amortized on a straight-line basis over the following lives:

	Useful Life in Years
Customer relationships	9-15
Non-competition agreements	1-5
Trade names	1-2
Internally developed and other purchased software	3-7

The carrying amount and accumulated amortization of other intangible assets as of December 31, 2019 and 2018 are as follows (in millions):

	December 31, 2019							December 31, 2018
	Gross					Net		Gross					Net
	Carrying		Accumulated			Carrying		Carrying		Accumulated			Carrying
	Amount		Amortization			Amount		Amount		Amortization			Amount
Customer relationships	$	48.0	$	(20.0	)	$	28.0	$	48.0	$	(16.2	)	$	31.8
Non-competition agreements	5.0		(4.4		)	0.6		5.0		(4.0		)	1.0
Trade names	3.8		(3.8		)	—		3.8		(3.1		)	0.7
Internally developed and other purchased software	42.0		(23.4		)	18.6		36.0		(18.4		)	17.6
Total other intangible assets	$	98.8	$	(51.6	)	$	47.2	$	92.8	$	(41.7	)	$	51.1

Schedule of Expected Amortization Expense

Estimated future amortization expense for intangible assets is as follows (in millions):

Year ending December 31,
2020	$	9.8
2021	9.1
2022	8.3
2023	5.2
2024	4.1
2025 and thereafter	10.7
Total	$	47.2