Commitments and Contingencies - Schedule of Settlement of Claims (Details) - USD ($) $ in Millions	3 Months Ended	69 Months Ended
	Mar. 31, 2025	Mar. 31, 2025
Commitments and Contingencies
Total	$ 164	$ 10,182
2017/2018 Wildfire/Mudslide Events
Commitments and Contingencies
Total	99	9,553
Other Wildfire Events
Commitments and Contingencies
Total	$ 65	$ 629