Debt and Credit Agreements (Quarter) (Details) - USD ($) $ in Millions	1 Months Ended
	Jun. 30, 2021	May 31, 2021	Apr. 30, 2021	Mar. 31, 2021	Feb. 28, 2021
Debt Instrument [Line Items]
Commitment	$ 4,850.0
SCE
Debt Instrument [Line Items]
Commitment	3,350.0
SCE | 2.25% first and refunding mortgage bonds due 2030
Debt Instrument [Line Items]
Debt				$ 150.0
Interest rate on debt (as a percent)				0.0225%
SCE | 2.95% first and refunding mortgage bonds due 2051
Debt Instrument [Line Items]
Debt				$ 750.0
Interest rate on debt (as a percent)				0.0295%
SCE | 0.64% first and refunding mortgage bonds due 2023
Debt Instrument [Line Items]
Debt			$ 400.0
SCE | 0.64% first and refunding mortgage bonds due 2023 | SOFR
Debt Instrument [Line Items]
Basis points			0.64%
SCE | 0.83% first and refunding mortgage bonds due 2024
Debt Instrument [Line Items]
Debt			$ 400.0
SCE | 0.83% first and refunding mortgage bonds due 2024 | SOFR
Debt Instrument [Line Items]
Basis points			0.83%
SCE | 0.70% first and refunding mortgage bonds due 2023
Debt Instrument [Line Items]
Debt			$ 350.0
Interest rate on debt (as a percent)			0.70%
SCE | 1.10% first and refunding mortgage bonds due 2024
Debt Instrument [Line Items]
Debt			$ 700.0
Interest rate on debt (as a percent)			1.10%
SCE | 2.50% first and refunding mortgage bonds due 2031
Debt Instrument [Line Items]
Debt	$ 450.0
SCE | 2.50% first and refunding mortgage bonds due 2031 | SOFR
Debt Instrument [Line Items]
Interest rate on debt (as a percent)	2.50%
SCE | 3.65% first and refunding mortgage bonds due 2051
Debt Instrument [Line Items]
Debt	$ 450.0
SCE | 3.65% first and refunding mortgage bonds due 2051 | SOFR
Debt Instrument [Line Items]
Interest rate on debt (as a percent)	3.65%
SCE | Recovery Bonds
Debt Instrument [Line Items]
Debt				$ 338.0	$ 338.0
SCE | Recovery Bonds, 0.86% due 2033
Debt Instrument [Line Items]
Debt				$ 138.0
Interest rate on debt (as a percent)				0.86%
SCE | Recovery Bonds, 1.94% due 2040
Debt Instrument [Line Items]
Debt				$ 100.0
Interest rate on debt (as a percent)				1.94%
SCE | Recovery Bonds, 2.51% due 2045
Debt Instrument [Line Items]
Debt				$ 100.0
Interest rate on debt (as a percent)				2.51%
SCE | 0.60% term loan due 2022
Debt Instrument [Line Items]
Debt		$ 1,200.0
SCE | 0.60% term loan due 2022 | SOFR
Debt Instrument [Line Items]
Basis points		0.60%
SCE | 0.35% first and refunding mortgage bonds due 2022
Debt Instrument [Line Items]
Debt	$ 475.0
SCE | 0.35% first and refunding mortgage bonds due 2022 | SOFR
Debt Instrument [Line Items]
Basis points	0.35%