Commitment and Contingencies - Smokehouse Creek Complex (Details) $ in Millions	3 Months Ended
	Mar. 31, 2026 USD ($) complaint Claims	Dec. 31, 2025 USD ($)
Statement of Financial Position [Abstract]
Amount of insurance coverage	$ 525
Smokehouse Creek Insurance Receivable	$ 185	$ 195
Number of complaints related to the Smokehouse Creek Complex | complaint	73
Number of claims related to the Smokehouse Creek Complex | Claims	304
Number of claims settled related to the Smokehouse Creek Complex | Claims	231
Smokehouse probable loss	$ 460
Smokehouse settlements reached	397
Smokehouse remaining liability	$ 75	56
Number of claims resolved related to the Smokehouse Creek Complex | complaint	26
Unsubmitted Claims related to the Smokehouse Creek Fire Complex | Claims	107
Number of unsubmitted claims settled related to the Smokehouse Creek Fire Complex | Claims	79
Smokehouse settlements paid	$ 385	$ 374
Smokehouse remaining probable loss	63
Legal Fees	40
Total estimated losses and incurred costs	500
Insurance coverage remaining	$ 90