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Income Taxes (Summary Of Provision For Income Taxes) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Income Tax Disclosure [Abstract]
Tax expense	$ 16,257	$ 23,946
Pretax income	$ 115,056	$ 146,214
Effective tax rates (percentage)	14.10%	16.40%

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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