Public Utilities, Approved Escalated Capital Additions, Year One, Percent

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Public Utilities, Approved Escalated Capital Additions, Year Two, Percent

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Public Utilities, Approved Reduction Revenue

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Public Utilities, Approved Reduction in Test Year Revenue

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Public Utilities, Approved Revenue Increase, Year One

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Public Utilities, Approved Revenue Requirement, Year One

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Public Utilities, Approved Revenue Requirement, Year Two

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Public Utilities, Impact of Decision, Asset Impairment, Increase (Decrease), Amount

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Public Utilities, Impact of Decision, Asset Impairment, Increase (Decrease), Net of Tax, Amount

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Public Utilities, Impact of Decision, Core Earnings, Increase (Decrease), Amount

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Public Utilities, Impact of Decision, Refund to Customers, Amount

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Public Utilities, Requested Conventional Return on Equity, Percentage

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Public Utilities, Revenue Requirement Increase (Decrease), Amount

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Public Utilities, Revenue Requirement Increase (Decrease), Percent

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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Percentage of public utility's amended requested rate increase (decrease) with regulatory agency.

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Percentage of public utility's requested return on equity.

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Summary of Significant Accounting Policies (Regulatory Proceedings) (Details) - USD ($) $ in Millions	1 Months Ended			3 Months Ended						9 Months Ended
	Sep. 30, 2019	May 31, 2019	Apr. 30, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Sep. 30, 2019	Sep. 30, 2018
Public Utilities, General Disclosures [Line Items]
Net income				$ 502.0			$ 544.0			$ 1,232.0	$ 1,084.0
CPUC \| 2018 GRC
Public Utilities, General Disclosures [Line Items]
Approved decision escalate capital additions, year two, percent		2.49%
Southern California Edison
Public Utilities, General Disclosures [Line Items]
Net income				$ 534.0	$ 449.0	$ 323.0	$ 567.0	$ 327.0	$ 316.0	1,306.0	$ 1,210.0
Southern California Edison \| CPUC \| 2018 GRC
Public Utilities, General Disclosures [Line Items]
Reduction in authorized revenue		$ 5,116.0			289.0
Approved decision escalate capital additions, year one, percent		2.49%
Approved revenue requirement year one		$ 5,451.0
Approved revenue requirement year two		$ 5,863.0
Impact of decision non-core impairment of utility core earnings, net of tax					131.0
Reduction in revenue					265.0
Increase in approved revenue					24.0
Refund to customers					554.0
Impact of decision non-core impairment of utility property, plant and equipment					170.0
Impact of decision non-core impairment of utility property, plant and equipment, net of tax					$ 123.0
Southern California Edison \| FERC
Public Utilities, General Disclosures [Line Items]
Increase (decrease) in revenue requirement										$ (131.0)
Decrease in revenue requirement percent										11.00%
ROE	17.12%
Amended ROE	0.85%		6.00%
Conventional ROE	11.12%
Southern California Edison \| FERC \| FERC 2018 Settlement Period
Public Utilities, General Disclosures [Line Items]
ROE	10.70%
Amended ROE	11.58%
Net income	$ 48.4
Southern California Edison \| FERC \| 2019 Formula Rate case
Public Utilities, General Disclosures [Line Items]
ROE			17.12%
Amended ROE			6.00%
Conventional ROE			11.12%
Southern California Edison \| FERC \| 2018 Formula Rate case
Public Utilities, General Disclosures [Line Items]
ROE			11.20%
Southern California Edison \| FERC \| April 2019 formula rate partial settlement
Public Utilities, General Disclosures [Line Items]
ROE	11.97%
Southern California Edison \| CAISO
Public Utilities, General Disclosures [Line Items]
Amended ROE	0.50%
Southern California Edison \| CAISO \| FERC 2018 Settlement Period
Public Utilities, General Disclosures [Line Items]
Amended ROE	0.50%
Southern California Edison \| CAISO \| 2019 Formula Rate case
Public Utilities, General Disclosures [Line Items]
Amended ROE			0.50%
Southern California Edison \| FERC and CAISO
Public Utilities, General Disclosures [Line Items]
ROE	13.25%
Southern California Edison \| FERC and CAISO \| FERC 2018 Settlement Period
Public Utilities, General Disclosures [Line Items]
ROE	11.20%
Southern California Edison \| FERC and CAISO \| 2019 Formula Rate case
Public Utilities, General Disclosures [Line Items]
ROE			18.40%