XML 30 R15.htm IDEA: XBRL DOCUMENT v3.23.2
Income Taxes
 6 Months Ended
Jun. 30, 2023
Income Tax Disclosure [Abstract]  
Income Taxes Income Taxes
The following table presents Income tax expense and the effective tax rate:
 Three Months Ended June 30,Six Months Ended June 30,
 2023202220232022
 (Dollars in millions)
Income tax expense$56.8 $51.4 $111.9 $100.2 
Effective tax rate23 %24 %23 %24 %
The effective tax rate for each of the periods in the table above differed from the statutory federal rate of 21%, due to state income taxes and U.S. taxes on foreign earnings, net of foreign tax credits, partially offset by a lower foreign effective tax rate.