Property, Plant and Equipment (Summary of Property and Equipment, net) (Parenthetical) (Details) - USD ($) $ in Millions		Mar. 31, 2024	Dec. 31, 2023
Property Plant And Equipment [Line Items]
Other property and equipment, net	[1]	$ 1,551	$ 1,503
CDM [Member]
Property Plant And Equipment [Line Items]
Other property and equipment, net		$ 154	$ 136

[1] $154 million and $136 million related to CDM in 2024 and 2023, respectively.