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Income Taxes	3 Months Ended
Income Taxes	Mar. 31, 2012
Income Taxes [Abstract]
Income Taxes	4. Income Taxes The effective tax rate for both quarters ended March 31, 2012 and 2011 was approximately 28%. At March 31, 2012, the total amount of liability for unrecognized tax benefits related to federal, state and foreign taxes was $44.6 million (of which $35.3 million would impact the effective tax rate, if recognized) plus $5.2 million of accrued interest. At December 31, 2011, the liability for unrecognized tax benefits was $45.0 million plus $5.0 million of accrued interest. Depending upon open tax examinations and/or the expiration of applicable statutes of limitation, the company believes it is reasonably possible that the total amount of unrecognized tax benefits may decrease by up to $4.5 million within the next 12 months.

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.

+ References

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+ Details