Goodwill and other intangible assets, net (Tables)

6 Months Ended

Jun. 30, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

The changes in the carrying amount of goodwill by operating segment are as follows:



	Operating Segments
In millions	Performance Chemicals		Performance Materials		Total
December 31, 2015	$	7.6	$	4.3	$	11.9
Foreign currency translation	0.6		—		0.6
June 30, 2016	$	8.2	$	4.3	$	12.5

Schedule of Finite-Lived Intangible Assets

All of the Company's other intangible assets, net are related to the Performance Chemicals operating segment. The following table summarizes intangible assets:



	June 30, 2016						December 31, 2015
In millions	Gross carrying amount		Accumulated amortization		Net		Gross carrying amount		Accumulated amortization		Net
Brands ⁽¹⁾	$	13.9	$	11.0	$	2.9	$	13.7	$	10.6	$	3.1
Customer contracts and relationships	28.2		22.5		5.7		28.2		21.4		6.8
Other	0.6		0.5		0.1		0.6		0.5		0.1
Other intangibles, net	$	42.7	$	34.0	$	8.7	$	42.5	$	32.5	$	10.0

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(1) Represents trademarks, trade names and know-how.

Finite-lived Intangible Assets Amortization Expense

The amortization expense related to the Company's intangible assets in the table above for the three and six months ended June 30, 2016 and 2015 is shown in the table below. Amortization expense is included within Cost of sales and Selling, general and administrative expenses on the Consolidated and Combined Statements of Operations.



	For the Three Months Ended June 30,				For the Six Months Ended June 30,
In millions	2016		2015		2016	2015
Amortization expense	$	0.8	$	0.7	1.6	$	1.6