Summary of Significant Accounting and Reporting Policies - Accounting Standards (Details) - USD ($) $ in Millions	Dec. 31, 2024	Jan. 01, 2024	Dec. 31, 2023
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Retained earnings	$ (24,150)		$ (22,997)
Cumulative Effect, Period of Adoption, Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Retained earnings		$ 10