Variable Interest Entities (Recovery Funding) (Details) - USD ($) $ in Millions	Mar. 31, 2021	Feb. 28, 2021	Dec. 31, 2020
Variable Interest Entity [Line Items]
Regulatory assets	$ 1,578.0		$ 1,314.0
Other current assets	209.0		224.0
Regulatory assets: Non-current	7,543.0		7,120.0
Current portion of long-term debt	909.0		1,029.0
Other current liabilities	1,690.0		1,612.0
Long-term debt	20,165.0		19,632.0
SCE Recovery Funding LLC
Variable Interest Entity [Line Items]
Regulatory assets: Non-current	331.0
Long-term debt	327.0
SCE
Variable Interest Entity [Line Items]
Regulatory assets	1,578.0		1,314.0
Other current assets	200.0		216.0
Regulatory assets: Non-current	7,543.0		7,120.0
Current portion of long-term debt	909.0		1,029.0
Other current liabilities	1,366.0		1,294.0
Long-term debt	17,031.0		$ 16,499.0
SCE \| Recovery Bonds
Variable Interest Entity [Line Items]
Debt		$ 338.0
SCE \| SCE Recovery Funding LLC
Variable Interest Entity [Line Items]
Regulatory assets	1.0
Other current assets	4.0
Regulatory assets: Non-current	331.0
Current portion of long-term debt	6.0
Other current liabilities	3.0
Long-term debt	$ 327.0

Face (par) amount of debt instrument at time of issuance.

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