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Income Taxes	3 Months Ended
	Mar. 31, 2013
Income Tax Disclosure [Abstract]
Income Taxes	P. The effective tax rate in the first quarter of 2013 was 18 percent primarily due to a decrease in the valuation allowance resulting from the partial utilization of our U.S. Federal net operating loss carryforward and from a $12 million state income tax benefit on uncertain tax positions due to the expiration of applicable statutes of limitations in various jurisdictions. As a result of tax audit closings, settlements and expiration of applicable statutes of limitations in various jurisdictions within the next 12 months, the Company anticipates that it is reasonably possible that the liability for uncertain tax positions could be reduced by approximately $3 million.

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The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

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