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Income Taxes	3 Months Ended
Income Taxes	Mar. 31, 2014
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Our effective tax rate was 30% for the three months ended March 31, 2014, compared to 29% for the three months ended March 31, 2013. The difference in the effective rates for each period, compared to the statutory rate of 35%, is primarily attributable to the mix of pretax income in each year among domestic and foreign jurisdictions which are taxed at different rates. As of March 31, 2014, our gross liability for unrecognized tax benefits was $5.3 million. If fully recognized, these tax benefits would decrease our income tax expense by $5.3 million ($3.4 million, net of federal tax). During the three months ended March 31, 2014, upon the close of a foreign tax audit, we released a gross unrecognized tax benefit of $0.4 million. We do not anticipate the recognition of any tax benefits that were previously unrecognized 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.

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