Schedule I - Condensed Financial Information (Notes to Condensed Financial Statements) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Condensed Financial Statements, Captions [Line Items]
Maximum allowable distribution to parent company by consolidated subsidiary without consent	$ 8,200
Parent Company
Condensed Financial Statements, Captions [Line Items]
Cash dividends paid	1,705	$ 1,625	$ 1,775
Total Stockholders' Equity
Condensed Financial Statements, Captions [Line Items]
Dividend received from subsidiaries	$ 1,705	$ 1,625	$ 1,775