Goodwill (Tables)

12 Months Ended

Dec. 31, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of Goodwill

The following table analyzes goodwill for 2016 and 2015.

(in millions)	Fuel Specialties			Performance Chemicals			Oilfield Services		Octane Additives			Total
At December 31, 2014
Gross cost (1)	$	209.0		$	29.8		$	37.3	$	236.5		$	512.6
Accumulated impairment losses		0.0			0.0			0.0		(236.5	)		(236.5	)
Net book amount	$	209.0		$	29.8		$	37.3	$	0.0		$	276.1
Exchange effect		(0.2	)		0.0			0.0		0.0			(0.2	)
Adjustment		(0.9	)		0.0			0.0		0.0			(0.9	)
Disposals		0.0			(7.6	)		0.0		0.0			(7.6	)
At December 31, 2015
Gross cost (1)	$	207.9		$	22.2		$	37.3	$	236.5		$	503.9
Accumulated impairment losses		0.0			0.0			0.0		(236.5	)		(236.5	)
Net book amount	$	207.9		$	22.2		$	37.3	$	0.0		$	267.4
Additions		0.0			107.4			0.0		0.0			107.4
At December 31, 2016
Gross cost (1)	$	207.9		$	129.6		$	37.3	$	236.5		$	611.3
Accumulated impairment losses		0.0			0.0			0.0		(236.5	)		(236.5	)
Net book amount	$	207.9		$	129.6		$	37.3	$	0.0		$	374.8

(1) Gross cost is net of $8.7 million, $0.3 million and $289.5 million of historical accumulated amortization in respect of the Fuel Specialties, Performance Chemicals and Octane Additives reporting segments, respectively.