Short-term Borrowings and Long-term Debt (Narrative) (Details) - Domestic Line of Credit - USD ($)	1 Months Ended
	Apr. 30, 2023	Jul. 31, 2023	Jan. 31, 2023
Debt Instrument [Line Items]
Committed line of credit		$ 15,000,000,000	$ 15,000,000,000
Revolving Credit Facility
Debt Instrument [Line Items]
Debt instrument, term	364 days
Committed line of credit	$ 10,000,000,000
Five Year Credit Facility
Debt Instrument [Line Items]
Debt instrument, term	5 years
Committed line of credit	$ 5,000,000,000