Unconsolidated Affiliate (Tables)

3 Months Ended

Mar. 31, 2017

Equity Method Investments and Joint Ventures [Abstract]

Equity Method Investments [Table Text Block]

The following summary presents ART's results of operations.

	Three Months Ended March 31,
(In millions)	2017		2016
Summary of Statement of Operations information:
Net sales	$	97.4	$	64.0
Costs and expenses applicable to net sales	78.9		48.2
Income before income taxes	14.2		13.9
Net income	14.0		13.8

Schedule of financial data related to transactions between Grace and ART

The table below presents summary financial data related to transactions between Grace and ART.

	Three Months Ended March 31,
(In millions)	2017		2016
Grace sales of catalysts to ART	$	51.4	$	56.5
Charges for fixed costs, research and development, selling, general and administrative services, and depreciation to ART	10.4		6.2

The table below lists Grace balances related to ART.

(in millions)	March 31, 2017		December 31, 2016
Trade accounts receivable	$	2.1	$	14.9
Noncurrent asset	27.0		27.0
Accounts payable	27.9		28.7
Debt payable within one year	7.9		7.6
Debt payable after one year	32.2		31.9
Noncurrent liability	27.0		27.0