Consolidated Statements of Financial Position (Parentheticals) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Statement of Financial Position [Abstract]
Allowance for credit losses	$ 340	$ 346
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