Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

The following table provides the gross carrying value and accumulated amortization for each major class of intangible asset at June 30, 2018 (in millions, except weighted average useful life):



		June 30, 2018
	Weighted Average Useful Life	Gross Carrying Value		Accumulated Amortization			Net Book Value
Customer relationships	17 years	$	154.0	$	(1.3	)	$	152.7
Tradename	Indefinite	14.0		—			14.0
Technology	6 years	30.4		(0.7		)	29.7
Non-Competition agreements	3 years	0.9		(0.1		)	0.8
Favorable leasehold interests	7 years	2.3		(0.1		)	2.2
Total intangible assets		$	201.6	$	(2.2	)	$	199.4

Schedule Of Valuation Methodologies Used To Determine Preliminary Fair Values Of Intangible Assets

A preliminary fair value of the identifiable intangible assets was derived, utilizing the following valuation methodology:



		Valuation Methodology
Customer relationships		Income approach to derive the present value of future cash flows from customer relationship.
Technology		The cost, market, and income approaches were used. • Cost approach - value is based on the current technology cost. • Market approach - value is based on sales of similar technologies. • Income approach - value based on identifiable discrete cash flows related to the technology.
Non-competition agreements		Income approach to compare cash flows with and without the non-compete.
Tradename		Relief from Royalty Method was utilized to determine the present value of savings from owning the asset.
Favorable leasehold interests		Income approach to derive the present value of the market versus contractual rent.

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

Estimated annual amortization expense related to intangible assets with definite lives as of June 30, 2018 is as follows (in millions):



Remainder of 2018	$	7.4
2019	14.7
2020	14.7
2021	14.6
2022	14.5
Thereafter	119.5
Total	$	185.4