Acquisitions (Tables)

9 Months Ended

Sep. 30, 2016

Business Acquisition [Line Items]

Schedule of Business Acquisitions, by Acquisition [Table Text Block]

	(In millions)
Inventories	$	30.2
Properties and equipment	98.5
Goodwill	60.9
Intangible assets	59.1
Net assets acquired	$	248.7

Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination [Table Text Block]

The table below presents the intangible assets acquired as part of the acquisition of the assets of BASF's polyolefin catalysts business and the periods over which they will be amortized.

	Amount (In millions)		Weighted Average Amortization Period (in years)
Customer Lists	$	37.4	20.0
Trademarks	13.4		20.0
Technology	8.3		20.0
Total	$	59.1	20.0

Schedule of Goodwill [Table Text Block]

The carrying amount of goodwill attributable to each reportable segment and the changes in those balances during the nine months ended September 30, 2016, are as follows:

(In millions)	Catalysts Technologies		Materials Technologies			Total Grace
Balance, December 31, 2015	$	292.8	$	43.7		$	336.5
Goodwill acquired during the year	60.9		—			60.9
Foreign currency translation	0.1		0.2			0.3
Write-off related to exited product lines	—		(2.5		)	(2.5		)
Balance, September 30, 2016	$	353.8	$	41.4		$	395.2