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Consolidated Statements of Financial Position (Parentheticals) - USD ($)
$ in Millions
Jun. 30, 2020
Dec. 31, 2019
Statement of Financial Position [Abstract]    
Allowance for credit losses $ 515 $ 424
Shareholder's Equity:    
Common stock - par value $ 1 $ 1
Common stock - authorized 2,000 2,000
Common stock - issued 1 1
Common stock - outstanding 1 1