Fair Value of Financial Instruments (Fair Value Hierarchy Table Presents The Company's Assets And Liabilities At Fair Value Not Recorded On The Company's Consolidated Balance Sheet) (Parenthetical) (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Embedded Derivative, Fair Value of Embedded Derivative, Net [Abstract]
Embedded derivative assets		$ 1
Embedded derivative liabilities	$ 2	$ 3