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Income Taxes	6 Months Ended
Income Taxes	Jun. 30, 2021
Income Tax Disclosure [Abstract]
Income Tax Disclosure	Income Taxes The effective income tax rate was 6.6% and 25.4% for the quarters ended 2021 and 2020, respectively, and 13.2% and 24.0% for the six months ended 2021 and 2020, respectively. The tax rate for the quarter and six months ended 2021 included a benefit of $364 million related to the remeasurement of deferred taxes as a result of a change in the U.K. statutory income tax rate.

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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