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Income Taxes (Tables)
9 Months Ended
Sep. 30, 2020
Income Tax Disclosure [Abstract]  
Schedule of Effective Income Tax Rate Reconciliation
The following table summarizes the difference between income tax expense (benefit) at the U.S. statutory rate of 21% and the income tax expense (benefit) at effective worldwide tax rates for the respective periods:
Three Months Ended September 30, Nine Months Ended September 30,
Millions of dollars2020201920202019
Earnings before income taxes$541 $677 $803 $1,221 
Income tax expense computed at United States statutory tax rate113 142 169 256 
Valuation allowances6 12 (195)
U.S. transition tax and prior period adjustments 56  56 
Audits and settlements14 31 (6)
U.S. foreign income items, net of credits(2)(1)19 
Changes in enacted tax rates(6)41 (6)66 
Sale of Embraco 43  54 
Other18 15 28 61 
Income tax expense (benefit) computed at effective worldwide tax rates$143 $313 $233 $311