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Restructuring Expenses and Repositioning Expenses (Tables)
 6 Months Ended
Jun. 30, 2017
Restructuring and Related Activities [Abstract]  
Schedule of restructuring expenses and asset impairments
The following table presents restructuring expenses by reportable segment for the three and six months ended June 30, 2017.
 
Three Months Ended June 30,
 
Six Months Ended June 30,
(In millions)
2017
 
2016
 
2017
 
2016
Catalysts Technologies
$
—

 
$
0.6

 
$
0.4

 
$
1.1

Materials Technologies
0.1

 
7.3

 
0.3

 
15.2

Corporate
1.9

 
—

 
4.1

 
0.1

Total restructuring expenses
$
2.0

 
$
7.9

 
$
4.8

 
$
16.4
Schedule of restructuring liability
Restructuring Liability
(In millions)
Total
Balance, December 31, 2016
$
9.6

Accruals for severance and other costs
4.4

Payments
(7.2
)
Currency translation adjustments and other
0.1

Balance, June 30, 2017
$
6.9