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Restructuring Restructuring (Tables)
 12 Months Ended
Dec. 31, 2017
Restructuring and Related Activities [Abstract]  
Charges and spending related to our 2015 restructuring program
The following table summarizes the charges and spending related to our 2015 restructuring program during 2017:
(In millions)
Workforce
Reduction
 
Pipeline
Programs
 
Total
Restructuring reserve as of December 31, 2015
$
33.7

 
$
3.6

 
$
37.3

Expense
4.9

 
5.4

 
10.3

Payments
(31.2
)
 
(9.0
)
 
(40.2
)
Adjustments to previous estimates, net
(5.2
)
 
2.9

 
(2.3
)
Restructuring reserve as of December 31, 2016
$
2.2

 
$
2.9

 
$
5.1

Payments
(1.7
)
 
(2.9
)
 
(4.6
)
Restructuring reserve as of December 31, 2017
$
0.5

 
$
—

 
$
0.5