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Income Taxes	3 Months Ended
Mar. 31, 2012
Income Taxes	13. Income Taxes – Income tax expense of $75.6 million was recorded in the current quarter, representing an effective tax rate of 31.9%. The prior year quarter provision for income taxes was $79.0 million, representing an effective tax rate of 34.3%. The prior year quarter included adjustments to deferred tax provisions as a result of the Illinois corporate income tax rate increase which was enacted in January 2011.

Income Taxes

3 Months Ended

Mar. 31, 2012

13. Income Taxes – Income tax expense of $75.6 million was recorded in the current quarter, representing an effective tax rate of 31.9%. The prior year quarter provision for income taxes was $79.0 million, representing an effective tax rate of 34.3%. The prior year quarter included adjustments to deferred tax provisions as a result of the Illinois corporate income tax rate increase which was enacted in January 2011.

- Definition

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

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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+ Details