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Income Taxes
3 Months Ended
Mar. 31, 2021
Income Tax Disclosure [Abstract]  
Income Taxes INCOME TAXESOur effective tax rate was a benefit of 59.2 percent for the 2021 first quarter compared to a benefit of 63.5 percent for the 2020 first quarter. The change in our effective tax rate was primarily due to a less favorable impact from stock-based compensation relative to our pre-tax income (loss).We paid cash for income taxes, net of refunds, of $33 million in the 2021 first quarter and $59 million in the 2020 first quarter.