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Income Taxes (Tables)
12 Months Ended
Dec. 31, 2016
Income Tax Disclosure [Abstract]  
Reconciliation of Beginning and Ending Liability for Unrecognized Tax Benefits
A reconciliation of the beginning and ending amount of the liability for unrecognized tax benefits is as follows:
($ in millions)
2016

2015

Balance at January 1
$
5.9

$
6.9

Increase due to current year position
1.0

0.8

Increase due to prior year position
1.2

0.9

Reduction for expiration of statute of limitations
(0.9
)
(1.2
)
Settlements
(1.0
)
(1.5
)
Balance at December 31
$
6.2

$
5.9

Schedule of Components of Income Before Income Taxes
The components of income before income taxes are:
($ in millions)
2016

2015

2014

U.S. operations
$
84.5

$
(4.0
)
$
57.5

International operations
105.3

120.1

111.5

Total income before income taxes
$
189.8

$
116.1

$
169.0

Schedule of Components of Income Tax Expense
The related provision for income taxes consists of:
($ in millions)
2016

2015

2014

Current:
 
 
 
Federal
$
2.5

$
1.0

$
5.2

State
1.0

0.9

0.5

International
29.4

33.3

34.5

Current income tax provision
32.9

35.2

40.2

Deferred:
 
 
 
Federal and state
21.8

(13.2
)
7.7

International
(0.3
)
4.3

(0.7
)
Deferred income tax provision
21.5

(8.9
)
7.0

Income tax expense
$
54.4

$
26.3

$
47.2

Schedule of Deferred Tax Assets and Liabilities
The significant components of our deferred tax assets and liabilities at December 31 are:
($ in millions)
2016

2015

Deferred tax assets
 
 
Net operating loss carryforwards
$
15.4

$
16.5

Tax credit carryforwards
27.9

40.8

Restructuring and impairment charges
2.9


Pension and deferred compensation
46.4

42.0

Other
19.5

19.3

Valuation allowance
(18.7
)
(20.1
)
Total deferred tax assets
93.4

98.5

Deferred tax liabilities:
 
 
Accelerated depreciation
30.3

35.0

Other
6.1

5.4

Total deferred tax liabilities
36.4

40.4

Net deferred tax asset
$
57.0

$
58.1

Schedule of Effective Income Tax Rate Reconciliation
A reconciliation of the U.S. federal corporate tax rate to our effective consolidated tax rate on income before income taxes follows:
 
2016

2015

2014

U.S. federal corporate tax rate
35.0
 %
35.0
 %
35.0
 %
Tax on international operations less than U.S. tax rate
(2.9
)
(5.1
)
(6.8
)
Reversal of prior valuation allowance
(0.3
)

(0.5
)
Reversal of reserves for unrecognized tax benefits
(0.6
)
(1.6
)
(0.5
)
U.S. tax on international earnings, net of foreign tax credits
(1.3
)
(4.6
)
(0.1
)
State income taxes, net of federal tax effect
0.8

0.3

1.5

U.S. research and development credits
(0.8
)
(1.3
)
(0.9
)
Other business credits and Section 199 Deduction
(1.1
)
(1.3
)
(0.7
)
Other
(0.1
)
1.2

1.0

Effective tax rate
28.7
 %
22.6
 %
28.0
 %