XML 37 R27.htm IDEA: XBRL DOCUMENT v3.5.0.2
Defined Benefit Pension Plans (Tables)
 6 Months Ended
Jun. 30, 2016
Compensation and Retirement Disclosure [Abstract]  
Schedule of Defined Benefit Plans Disclosures [Table Text Block]
The net periodic pension cost included the following components:
 
Quarter Ended June 30,
 
Six Months Ended June 30,
Dollar amounts in millions
2016
 
2015
 
2016
 
2015
Service cost
$
1.2

 
$
1.0

 
$
2.4

 
$
2.0

Interest cost
3.3

 
3.4

 
6.7

 
6.8

Expected return on plan assets
(3.3
)
 
(3.8
)
 
(6.7
)
 
(7.6
)
Amortization of prior service cost 1
0.1

 
0.1

 
0.2

 
0.2

Amortization of net loss 1
1.4

 
1.8

 
2.8

 
3.6

Net periodic pension cost
$
2.7

 
$
2.5

 
$
5.4

 
$
5.0