Supplemental Financial Information - Investments (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Summary of Investment Holdings [Line Items]
Long-term Investment Securities	$ 886	$ 799
Equity securities
Summary of Investment Holdings [Line Items]
Long-term Investment Securities	553	555
Other
Summary of Investment Holdings [Line Items]
Long-term Investment Securities	$ 333	$ 244