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Income Taxes
3 Months Ended
Mar. 31, 2020
Income Tax Disclosure [Abstract]  
Income Taxes
 Note 11
 
   Income Taxes
The components of income tax expense were:
 
    
Three Months Ended
March 31
 
(Dollars in Millions)    2020     2019  
Federal
     
Current
   $ 315      $ 220  
Deferred
     (106      116  
Federal income tax
     209        336  
State
     
Current
     70        30  
Deferred
     (19      12  
State income tax
     51        42  
Total income tax provision
   $ 260      $ 378  
A reconciliation of expected income tax expense at the federal statutory rate of 21 percent to the Company’s applicable income tax expense follows:
 
    
    Three Months Ended    
March 31
 
(Dollars in Millions)    2020     2019  
Tax at statutory rate
   $ 302      $ 438  
State income tax, at statutory rates, net of federal tax benefit
     59        84  
Tax effect of
     
Tax credits and benefits, net of related expenses
     (102      (103
Exam resolutions
            (49
Tax-exempt
income
     (29      (32
Other items
     30        40  
Applicable income taxes
   $ 260      $ 378  
The Company’s income tax returns are subject to review and examination by federal, state, local and foreign government authorities. On an ongoing basis, numerous federal, state, local and foreign examinations are in progress and cover multiple tax years. As of March 31, 2020, federal tax examinations for all years ending through December 31, 2010, and years ending December 31, 2013, and December 31, 2014 are completed and resolved. The Company's tax returns for the years ended December 31, 2011, 2012, 2015, 2016, 2017 and 2018 are under examination by the Internal Revenue Service. The years open to examination by foreign, state and local government authorities vary by jurisdiction.
The Company’s net deferred tax asset was $223 million at March 31, 2020 and $382 million at December 31, 2019.