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Income Taxes
 3 Months Ended
Mar. 31, 2022
Income Tax Disclosure [Abstract]  
Income Taxes Income Taxes
 Quarter ended
 20222021
Income tax (benefit) provision$(1)$83 
Effective tax rate(0.2)%20.2 %
The decrease in our effective tax rate for the quarter ended March 31, 2022, as compared with the quarter ended March 31, 2021, is primarily due to an $82 million tax benefit discretely recorded in the quarter ended March 31, 2022, from the release of a valuation allowance on foreign tax credit carryforwards. In January 2022, the U.S. Treasury published new regulations impacting foreign tax credit utilization beginning in the Company’s 2022 tax year. These regulations make foreign taxes paid to certain countries no longer creditable in the U.S. Accordingly, we reversed a valuation allowance associated with existing foreign tax credit carryforwards that we now believe will be used to offset these now non-creditable taxes in 2022 and future years.