Income Taxes	3 Months Ended
Income Taxes	Mar. 31, 2021
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes For the three months ended March 31, 2021, income tax expense was $25.9 million, representing an effective tax rate of 21%. The items resulting in variances from the federal statutory rate primarily consist of state income tax expense of $3.4 million, tax expense of $2.5 million from nondeductible executive compensation, and tax expense from foreign operations of $1.4 million, partially offset by tax benefit of $1.3 million from foreign derived intangible income and $5.4 million for excess tax benefits related to stock compensation. For the three months ended March 31, 2020, income tax expense was $33.6 million, representing an effective tax rate of 31%. The effective tax rate differs from the federal statutory rate of 21% due primarily to tax expense of $4.6 million for excess tax deficiencies related to stock compensation, tax expense from foreign operations of $4.0 million, state income tax expense of $3.0 million and $2.7 million for an increase in valuation allowances for foreign taxes and U.S. foreign tax credits, partially offset by tax benefit of $2.8 million relating to uncertain tax positions (including accrued interest) due to an audit settlement. At March 31, 2021, the Company had foreign tax credit carry forwards of approximately $32.4 million, expiring on various dates from 2021 through 2031. These carryforwards have been reduced by a valuation allowance of $32.4 million as it is more likely than not that these carry forwards will not be realized. For the three months ended March 31, 2021, $0.3 million relating to amortization of tax deductible second component goodwill was realized as a reduction in tax liability (as determined on a 'with-and-without' approach).

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.