Consolidated Statements of Financial Position (Parentheticals) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Statement of Financial Position [Abstract]
Allowance for credit losses	$ 255	$ 331
Shareholder's Equity:
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, authorized (in dollars per share)	2,000	2,000
Common stock, issued (in dollars per share)	1	1
Common stock, outstanding (in dollars per share)	1	1