Commitments and Contingencies (Nuclear) (Details) - USD ($) $ in Millions		12 Months Ended
	Jan. 01, 2023	Dec. 31, 2023
Palo Verde (nuclear)
Commitments and Contingencies
Federal loss limit, bodily injury and property damage from nuclear incident		$ 16,200
San Onofre
Commitments and Contingencies
Federal loss limit, bodily injury and property damage from nuclear incident		560
SCE
Commitments and Contingencies
Limit on retroactive premium adjustments assessment, per year		24
Maximum per incident, prior events		255
Maximum per incident, prior events, annually		38
SCE | Palo Verde (nuclear)
Commitments and Contingencies
Minimum federal requirement of nuclear property insurance		1,100
Maximum per incident		79
Maximum per incident annual		12
SCE | San Onofre
Commitments and Contingencies
Minimum federal requirement of nuclear property insurance		$ 50
SCE and other owners of San Onofre and Palo Verde
Commitments and Contingencies
Maximum private primary insurance	$ 450