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Other Comprehensive Income Other Comprehensive Income (Tables)
 3 Months Ended
Mar. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]  
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
 
 
 
 
Pension Adjustments
 
 
 
 
 
 
Dollar amounts in millions
 
Foreign currency translation adjustments
 
Actuarial losses
 
Prior service costs
 
Unrealized gain (loss) on investments
 
Other
 
Total
Balance at December 31, 2017
 
$
(39.7
)
 
$
(79.5
)
 
$
(4.9
)
 
$
3.5

 
$
(1.5
)
 
$
(122.1
)
Effect of adoption of ASU 2018-02
 
—

 
(17.4
)
 
—

 
0.7

 
—

 
(16.7
)
Other comprehensive income before reclassifications
 
2.3

 
0.2

 
—

 
0.2

 

 
2.7

Income taxes
 
—

 
—

 
—

 

 
—

 
—

Net other comprehensive income before reclassifications
 
2.3

 
0.2

 
—

 
0.2

 
—

 
2.7

Amounts reclassified from accumulated comprehensive income
 
—

 
1.5

 
0.1

 
—

 
—

 
1.6

Income taxes
 
—

 
(0.4
)
 
—

 
—

 
—

 
(0.4
)
Net amounts reclassified from cumulative other comprehensive income
 
—

 
1.1

 
0.1

 
—

 
—

 
1.2

Total other comprehensive income
 
2.3

 
1.3

 
0.1

 
0.2

 
—

 
3.9

Balance at March 31, 2018
 
$
(37.4
)
 
$
(95.6
)
 
$
(4.8
)
 
$
4.4

 
$
(1.5
)
 
$
(134.9
)



Other comprehensive income activity, net of tax, is provided in the following table for the quarter ended March 31, 2017:
 
 
 
 
Pension Adjustments
 
 
 
 
 
 
Dollar amounts in millions
 
Foreign currency translation adjustments
 
Actuarial losses
 
Prior service costs
 
Unrealized gain (loss) on investments
 
Other
 
Total
Balance at December 31, 2016
 
$
(46.3
)
 
$
(87.7
)
 
$
(5.2
)
 
$
2.7

 
$
(0.7
)
 
$
(137.2
)
Other comprehensive income (loss) before reclassifications
 
2.8

 
(0.2
)
 
—

 
0.5

 
—

 
3.1

Income taxes
 
—

 
—

 
—

 
(0.2
)
 
—

 
(0.2
)
Net other comprehensive income (loss) before reclassifications
 
2.8

 
(0.2
)
 
—

 
0.3

 
—

 
2.9

Amounts reclassified from accumulated other comprehensive income
 
—

 
1.4

 
0.3

 
—

 
—

 
1.7

Income taxes
 
—

 
(0.5
)
 
(0.1
)
 
—

 
—

 
(0.6
)
Net amounts reclassified from cumulative other comprehensive income
 
—

 
0.9

 
0.2

 
—

 
—

 
1.1

Total other comprehensive income
 
2.8

 
0.7

 
0.2

 
0.3

 
—

 
4.0

Balance at March 31, 2017
 
$
(43.5
)
 
$
(87.0
)
 
$
(5.0
)
 
$
3.0

 
$
(0.7
)
 
$
(133.2
)