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Other Expense (Tables)
 6 Months Ended
Jun. 30, 2019
Other Income and Expenses [Abstract]  
Schedule of Other Expense

Other (income) expense consists of:

 
Three Months Ended
June 30,
 
Six Months Ended
June 30,
($ in millions)
2019
 
2018
 
2019
 
2018
Restructuring and related charges:
 
 
 
 
 
 
 
Severance and post-employment benefits
$
1.3

 
$
1.3

 
$
1.6

 
$
3.3

Asset-related charges
—

 
0.3

 
—

 
0.4

Other charges
0.1

 
0.6

 
0.4

 
1.8

Total restructuring and related charges
1.4

 
2.2

 
2.0

 
5.5

Development and licensing income
(0.2
)
 
(0.2
)
 
(0.4
)
 
(0.4
)
Contingent consideration
0.1

 
0.3

 
0.3

 
0.6

Other items
(3.8
)
 
(1.2
)
 
(6.7
)
 
(1.5
)
Total other (income) expense
$
(2.5
)
 
$
1.1

 
$
(4.8
)
 
$
4.2
Schedule of Restructuring Reserve
The following table presents activity related to our restructuring obligations related to our 2018 restructuring plan:

($ in millions)
Severance
and benefits
 
Asset-related charges
 
Other charges
 
Total
Balance, December 31, 2018
$
2.3

 
$
—

 
$
—

 
$
2.3

Charges
1.6

 
—

 
0.4

 
2.0

Cash payments
(1.6
)
 
—

 
—

 
(1.6
)
Non-cash asset write-downs
—

 
—

 
(0.4
)
 
(0.4
)
Balance, June 30, 2019
$
2.3

 
$
—

 
$
—

 
$
2.3