Income Taxes (Tables)

12 Months Ended

Dec. 31, 2012

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)	2012			2011
Balance at January 1	$	6.3		$	5.0
Additions for tax positions taken in the current year	0.7			1.3
Additions for tax positions of prior years	—			0.7
Reduction for expiration of statute of limitations/audits	(0.2		)	(0.7		)
Balance at December 31	$	6.8		$	6.3

Schedule of Components of Income Before Income Taxes

The components of income before income taxes are:

($ in millions)	2012		2011		2010
U.S. operations	$	8.9	$	15.8	$	7.2
International operations	99.7		76.9		67.3
Total income before income taxes	$	108.6	$	92.7	$	74.5

Schedule of Components of Income Tax Expense

The related provision for income taxes consists of:

($ in millions)	2012		2011		2010
Current:
Federal	$	—	$	—	$	0.6
State	0.2		—		0.2
International	27.2		20.6		14.6
Current income tax provision	27.4		20.6		15.4
Deferred:
Federal and state	3.3		2.7		(0.5		)
International	2.0		0.2		(1.3		)
Deferred income tax provision	5.3		2.9		(1.8		)
Income tax expense	$	32.7	$	23.5	$	13.6

Schedule of Deferred Tax Assets and Liabilities

The significant components of our deferred tax assets and liabilities at December 31 are:

($ in millions)	2012			2011
Deferred tax assets
Net operating loss carryforwards	$	21.1		$	21.7
Tax credit carryforwards	37.0			42.5
Restructuring and impairment charges	0.3			1.7
Pension and deferred compensation	69.8			62.3
Other	15.1			9.3
Valuation allowance	(20.4		)	(19.3		)
Total deferred tax assets	122.9			118.2
Deferred tax liabilities:
Accelerated depreciation	42.8			41.2
Other	3.9			6.5
Total deferred tax liabilities	46.7			47.7
Net deferred tax asset	$	76.2		$	70.5

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:

	2012		2011		2010
U.S. federal corporate tax rate	35.0	%	35.0	%	35.0	%
Tax on international operations less than U.S. tax rate	(5.9	)	(8.2	)	(11.0	)
Non-benefited losses	0.6		—		1.4
Reversal of prior valuation allowance	—		(0.1	)	(0.2	)
Reversal of reserves for unrecognized tax benefits	(0.2	)	(0.8	)	(3.0	)
U.S. tax on international earnings, net of foreign tax credits	(1.2	)	(1.5	)	(2.2	)
State income taxes, net of federal tax effect	(1.0	)	0.7		(1.6	)
General business credits and Section 199 Deduction	(1.5	)	(2.4	)	(1.5	)
Non-deductible debt premium	2.0		—		—
Other	2.4		2.6		1.4
Effective tax rate	30.2	%	25.3	%	18.3	%