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Schedule I - Condensed Financial Information of Parent (Details) |  | 1 Months Ended | 3 Months Ended | 12 Months Ended |  |  |  |  |
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Feb. 28, 2019 | Jul. 31, 2018 USD ($) | May 31, 2018 USD ($) extension | Jan. 31, 2018 USD ($) | Dec. 31, 2018 USD ($) | Sep. 30, 2018 USD ($) | Jun. 30, 2018 USD ($) | Mar. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Sep. 30, 2017 USD ($) | Jun. 30, 2017 USD ($) | Mar. 31, 2017 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2018 USD ($) | Apr. 30, 2018 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($)
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  |  |  | $ 1,091,000,000 | $ 144,000,000 |  |  | $ 1,091,000,000 | $ 1,091,000,000 |  |  |  | $ 1,091,000,000 | $ 1,091,000,000 |  | $ 144,000,000 |  | $ 1,091,000,000 |  |
Other current assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 78,000,000 |  | 202,000,000 |  |
Total current assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,359,000,000 |  | 3,729,000,000 |  |
Other long-term assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,445,000,000 |  | 374,000,000 |  |
Total assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 56,715,000,000 |  | 52,580,000,000 |  |
Liabilities and equity: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Short-term debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 720,000,000 |  | 2,393,000,000 |  |
Current portion of long-term debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 79,000,000 |  | 481,000,000 |  |
Other current liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,233,000,000 |  | 1,266,000,000 |  |
Total current liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5,395,000,000 |  | 7,068,000,000 |  |
Long-term debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 14,632,000,000 |  | 11,642,000,000 |  |
Total equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 12,652,000,000 |  | 13,866,000,000 | $ 14,187,000,000 | $ 13,388,000,000
Total liabilities and equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 56,715,000,000 |  | 52,580,000,000 |  |
Condensed Statements of Income: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest income from affiliates |  |  |  |  | 3,009,000,000 | $ 4,269,000,000 | $ 2,815,000,000 | 2,564,000,000 | 3,220,000,000 | $ 3,672,000,000 | $ 2,965,000,000 | $ 2,463,000,000 | 12,657,000,000 | 12,320,000,000 | $ 11,869,000,000 |  |  |  |  |
Operating, interest and other expenses |  |  |  |  |  |  |  |  |  |  |  |  | 13,209,000,000 | 10,864,000,000 | 9,807,000,000 |  |  |  |  |
Operating (loss) income |  |  |  |  | (2,041,000,000) | 739,000,000 | 420,000,000 | 330,000,000 | (38,000,000) | 553,000,000 | 470,000,000 | 471,000,000 | (552,000,000) | 1,456,000,000 | 2,062,000,000 |  |  |  |  |
Income tax (benefit) expense |  |  |  |  |  |  |  |  |  |  |  |  | (739,000,000) | 281,000,000 | 177,000,000 |  |  |  |  |
(Loss) income from continuing operations |  |  |  |  | (1,434,000,000) | 544,000,000 | 298,000,000 | 242,000,000 | (534,000,000) | 501,000,000 | 309,000,000 | 392,000,000 | (350,000,000) | 668,000,000 | 1,413,000,000 |  |  |  |  |
Income from discontinued operations, net of tax |  |  |  |  | 34,000,000 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 34,000,000 | 0 | 12,000,000 |  |  |  |  |
Condensed Statements of Comprehensive Income |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other comprehensive (loss) income, net of tax |  |  |  |  |  |  |  |  |  |  |  |  | (7,000,000) | 10,000,000 | 3,000,000 |  |  |  |  |
Comprehensive (loss) income |  |  |  |  |  |  |  |  |  |  |  |  | (430,000,000) | 575,000,000 | 1,314,000,000 |  |  |  |  |
Condensed Statements of Cash Flows: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net cash provided by operating activities |  |  |  |  |  |  |  |  |  |  |  |  | 3,177,000,000 | 3,597,000,000 | 3,254,000,000 |  |  |  |  |
Cash flows from financing activities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt issued |  |  |  |  |  |  |  |  |  |  |  |  | 3,237,000,000 | 2,233,000,000 | 397,000,000 |  |  |  |  |
Repayments of Long-term Debt |  |  |  |  |  |  |  |  |  |  |  |  | (654,000,000) | (1,285,000,000) | (220,000,000) |  |  |  |  |
Short-term debt financing, net |  |  |  |  |  |  |  |  |  |  |  |  | (1,611,000,000) | 1,084,000,000 | 611,000,000 |  |  |  |  |
Payments for stock-based compensation |  |  |  |  |  |  |  |  |  |  |  |  | (46,000,000) | (393,000,000) | (237,000,000) |  |  |  |  |
Receipts from stock option exercises |  |  |  |  |  |  |  |  |  |  |  |  | 26,000,000 | 215,000,000 | 135,000,000 |  |  |  |  |
Dividends paid |  |  |  |  |  |  |  |  |  |  |  |  | (788,000,000) | (707,000,000) | (626,000,000) |  |  |  |  |
Net cash provided by (used in) financing activities |  |  |  |  |  |  |  |  |  |  |  |  | 82,000,000 | 1,007,000,000 | 95,000,000 |  |  |  |  |
Net cash used in investing activities |  |  |  |  |  |  |  |  |  |  |  |  | (4,239,000,000) | (3,586,000,000) | (3,403,000,000) |  |  |  |  |
Cash and cash equivalents, beginning of year |  |  |  | $ 1,091,000,000 |  |  |  | 1,091,000,000 |  |  |  |  | 1,091,000,000 |  |  |  |  |  |  |
Cash and cash equivalents, end of year |  |  |  |  | 144,000,000 |  |  |  | 1,091,000,000 |  |  |  | 144,000,000 | 1,091,000,000 |  |  |  |  |  |
Debt and Credit Agreements |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of one year extension options | extension |  |  | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Covenant requirement, consolidated debt to total capitalization, ratio |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.70 |  |  |  |
Actual consolidated debt to total capitalization, ratio |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.55 |  |  |  |
Multi-year credit facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt and Credit Agreements |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitment |  |  | $ 1,500,000,000 |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,500,000,000 | $ 1,250,000,000 |  |  |
Outstanding borrowings (excluding discount) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  | $ (639,000,000) |  |
Amount available |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,500,000,000 |  |  |  |
Weighted average interest rate (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.70% |  |
Senior notes | 2.125% Senior notes due 2020 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt and Credit Agreements |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt, face amount |  |  |  |  |  |  |  | 500,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Basis points |  |  |  | 1.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior notes | 2.40% Senior notes due 2022 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt and Credit Agreements |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt, face amount |  |  |  |  |  |  |  | $ 550,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Interest rate on debt (as a percent) |  |  |  |  |  |  |  | 4.125% |  |  |  |  |  |  |  |  |  |  |  |
Senior notes | 2.95% Senior notes due 2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt and Credit Agreements |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate on debt (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2.95% |  |  |  |
Senior notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 400,000,000 |  |  |  |
Edison International Parent and Other |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  |  |  | $ 524,000,000 | 97,000,000 |  |  | $ 524,000,000 | 524,000,000 |  |  | 6,000,000 | 524,000,000 | 6,000,000 | 7,000,000 | 97,000,000 |  | $ 524,000,000 | 6,000,000 | 7,000,000
Other current assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 52,000,000 |  | 340,000,000 |  |
Total current assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 149,000,000 |  | 864,000,000 |  |
Investments in subsidiaries |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 12,521,000,000 |  | 13,659,000,000 |  |
Deferred income taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 516,000,000 |  | 500,000,000 |  |
Other long-term assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 78,000,000 |  | 91,000,000 |  |
Total assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 13,264,000,000 |  | 15,114,000,000 |  |
Liabilities and equity: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Short-term debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  | 1,139,000,000 |  |
Other current liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 498,000,000 |  | 467,000,000 |  |
Total current liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 498,000,000 |  | 1,606,000,000 |  |
Long-term debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,740,000,000 |  | 1,193,000,000 |  |
Other long-term liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 567,000,000 |  | 644,000,000 |  |
Total equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10,459,000,000 |  | 11,671,000,000 |  |
Total liabilities and equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 13,264,000,000 |  | 15,114,000,000 |  |
Condensed Statements of Income: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest income from affiliates |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 | 6,000,000 |  |  |  |  |
Operating, interest and other expenses |  |  |  |  |  |  |  |  |  |  |  |  | 98,000,000 | 92,000,000 | 86,000,000 |  |  |  |  |
Operating (loss) income |  |  |  |  |  |  |  |  |  |  |  |  | (98,000,000) | (92,000,000) | (80,000,000) |  |  |  |  |
Equity in (loss) earnings of subsidiaries |  |  |  |  |  |  |  |  |  |  |  |  | (376,000,000) | 739,000,000 | 1,337,000,000 |  |  |  |  |
(Loss) income before income taxes |  |  |  |  |  |  |  |  |  |  |  |  | (474,000,000) | 647,000,000 | 1,257,000,000 |  |  |  |  |
Income tax (benefit) expense |  |  |  |  |  |  |  |  |  |  |  |  | (17,000,000) | 82,000,000 | (42,000,000) |  |  |  |  |
(Loss) income from continuing operations |  |  |  |  |  |  |  |  |  |  |  |  | (457,000,000) | 565,000,000 | 1,299,000,000 |  |  |  |  |
Income from discontinued operations, net of tax |  |  |  |  |  |  |  |  |  |  |  |  | 34,000,000 | 0 | 12,000,000 |  |  |  |  |
Net income |  |  |  |  |  |  |  |  |  |  |  |  | (423,000,000) | 565,000,000 | 1,311,000,000 |  |  |  |  |
Condensed Statements of Comprehensive Income |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net (loss) income |  |  |  |  |  |  |  |  |  |  |  |  | (423,000,000) | 565,000,000 | 1,311,000,000 |  |  |  |  |
Other comprehensive (loss) income, net of tax |  |  |  |  |  |  |  |  |  |  |  |  | (7,000,000) | 10,000,000 | 3,000,000 |  |  |  |  |
Comprehensive (loss) income |  |  |  |  |  |  |  |  |  |  |  |  | (430,000,000) | 575,000,000 | 1,314,000,000 |  |  |  |  |
Condensed Statements of Cash Flows: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net cash provided by operating activities |  |  |  |  |  |  |  |  |  |  |  |  | 785,000,000 | 462,000,000 | 493,000,000 |  |  |  |  |
Cash flows from financing activities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt issued |  |  |  |  |  |  |  |  |  |  |  |  | 549,000,000 | 798,000,000 | 400,000,000 |  |  |  |  |
Long-term debt issuance costs |  |  |  |  |  |  |  |  |  |  |  |  | (4,000,000) | (5,000,000) | (3,000,000) |  |  |  |  |
Repayments of Long-term Debt |  |  |  |  |  |  |  |  |  |  |  |  | 0 | (400,000,000) | 0 |  |  |  |  |
Payable due to affiliates |  |  |  |  |  |  |  |  |  |  |  |  | 13,000,000 | 8,000,000 | 34,000,000 |  |  |  |  |
Short-term debt financing, net |  |  |  |  |  |  |  |  |  |  |  |  | (1,141,000,000) | 600,000,000 | (108,000,000) |  |  |  |  |
Payments for stock-based compensation |  |  |  |  |  |  |  |  |  |  |  |  | (24,000,000) | (260,000,000) | (95,000,000) |  |  |  |  |
Receipts from stock option exercises |  |  |  |  |  |  |  |  |  |  |  |  | 14,000,000 | 144,000,000 | 51,000,000 |  |  |  |  |
Dividends paid |  |  |  |  |  |  |  |  |  |  |  |  | (788,000,000) | (707,000,000) | (626,000,000) |  |  |  |  |
Net cash provided by (used in) financing activities |  |  |  |  |  |  |  |  |  |  |  |  | (1,381,000,000) | 178,000,000 | (347,000,000) |  |  |  |  |
Capital contributions to affiliate |  |  |  |  |  |  |  |  |  |  |  |  | (10,000,000) | (122,000,000) | (147,000,000) |  |  |  |  |
Dividends from affiliate |  |  |  |  |  |  |  |  |  |  |  |  | 179,000,000 | 0 | 0 |  |  |  |  |
Net cash used in investing activities |  |  |  |  |  |  |  |  |  |  |  |  | 169,000,000 | (122,000,000) | (147,000,000) |  |  |  |  |
Net increase (decrease) in cash, cash equivalent and restricted cash |  |  |  |  |  |  |  |  |  |  |  |  | (427,000,000) | 518,000,000 | (1,000,000) |  |  |  |  |
Cash and cash equivalents, beginning of year |  |  |  | 524,000,000 |  |  |  | 524,000,000 |  |  |  | 6,000,000 | 524,000,000 | 6,000,000 | 7,000,000 |  |  |  |  |
Cash and cash equivalents, end of year |  |  |  |  | 97,000,000 |  |  |  | 524,000,000 |  |  |  | 97,000,000 | 524,000,000 | 6,000,000 |  |  |  |  |
Basis of Presentation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash dividends received from consolidated subsidiaries |  |  |  |  |  |  |  |  |  |  |  |  | 788,000,000 | 573,000,000 | 701,000,000 |  |  |  |  |
Related Party Transactions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Current receivables due from affiliates |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 41,000,000 |  | 256,000,000 |  |
Current payables due to affiliates |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 249,000,000 |  | 235,000,000 |  |
Long-term receivables due from affiliate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 73,000,000 |  | 81,000,000 |  |
Long-term payables due to affiliates |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 213,000,000 |  | $ 200,000,000 |  |
Edison International Parent and Other | SCE |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transactions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expenses from services provided by SCE |  |  |  |  |  |  |  |  |  |  |  |  | 2,000,000 | 3,000,000 | 3,000,000 |  |  |  |  |
Interest expense from loans due to affiliates |  |  |  |  |  |  |  |  |  |  |  |  | 5,000,000 | 5,000,000 | 3,000,000 |  |  |  |  |
Edison International Parent and Other | Senior notes | 2.125% Senior notes due 2020 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt and Credit Agreements |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate on debt (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2.125% |  | 2.125% |  |
Senior notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 400,000,000 |  | $ 400,000,000 |  |
Edison International Parent and Other | Senior notes | 2.40% Senior notes due 2022 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt and Credit Agreements |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate on debt (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2.40% |  | 2.40% |  |
Senior notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 400,000,000 |  | $ 400,000,000 |  |
Edison International Parent and Other | Senior notes | 2.95% Senior notes due 2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt and Credit Agreements |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate on debt (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2.95% |  |
Senior notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 400,000,000 |  |
Edison International Parent and Other |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Liabilities and equity: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Current portion of long-term debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  | 2,000,000 |  |
Long-term debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,740,000,000 |  | 1,214,000,000 |  |
SCE |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  |  |  | 515,000,000 | 21,000,000 |  |  | 515,000,000 | 515,000,000 |  |  |  | 515,000,000 | 515,000,000 |  | 21,000,000 |  | 515,000,000 |  |
Other current assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 69,000,000 |  | 160,000,000 |  |
Total current assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,325,000,000 |  | 3,087,000,000 |  |
Other long-term assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,360,000,000 |  | 237,000,000 |  |
Total assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 56,574,000,000 |  | 51,515,000,000 |  |
Liabilities and equity: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Short-term debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 720,000,000 |  | 1,238,000,000 |  |
Current portion of long-term debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 79,000,000 |  | 479,000,000 |  |
Other current liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 975,000,000 |  | 1,225,000,000 |  |
Total current liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5,146,000,000 |  | 5,887,000,000 |  |
Long-term debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 12,892,000,000 |  | 10,428,000,000 |  |
Total equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 13,785,000,000 |  | 14,672,000,000 | 14,483,000,000 | $ 13,672,000,000
Total liabilities and equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 56,574,000,000 |  | $ 51,515,000,000 |  |
Condensed Statements of Income: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest income from affiliates |  |  |  |  | 2,994,000,000 | 4,260,000,000 | 2,803,000,000 | 2,554,000,000 | 3,193,000,000 | 3,652,000,000 | 2,953,000,000 | 2,456,000,000 | 12,611,000,000 | 12,254,000,000 | 11,830,000,000 |  |  |  |  |
Operating, interest and other expenses |  |  |  |  |  |  |  |  |  |  |  |  | 13,017,000,000 | 10,707,000,000 | 9,648,000,000 |  |  |  |  |
Operating (loss) income |  |  |  |  | (2,013,000,000) | $ 754,000,000 | $ 439,000,000 | 414,000,000 | (28,000,000) | $ 569,000,000 | $ 508,000,000 | $ 498,000,000 | (406,000,000) | 1,547,000,000 | 2,182,000,000 |  |  |  |  |
Income tax (benefit) expense |  |  |  |  |  |  |  |  |  |  |  |  | (696,000,000) | (30,000,000) | 256,000,000 |  |  |  |  |
Condensed Statements of Comprehensive Income |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other comprehensive (loss) income, net of tax |  |  |  |  |  |  |  |  |  |  |  |  | (4,000,000) | 1,000,000 | 2,000,000 |  |  |  |  |
Condensed Statements of Cash Flows: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net cash provided by operating activities |  |  |  |  |  |  |  |  |  |  |  |  | 3,191,000,000 | 3,735,000,000 | 3,521,000,000 |  |  |  |  |
Cash flows from financing activities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt issued |  |  |  |  |  |  |  |  |  |  |  |  | 2,692,000,000 | 1,445,000,000 | 0 |  |  |  |  |
Repayments of Long-term Debt |  |  |  |  |  |  |  |  |  |  |  |  | (639,000,000) | (882,000,000) | (217,000,000) |  |  |  |  |
Short-term debt financing, net |  |  |  |  |  |  |  |  |  |  |  |  | (520,000,000) | 469,000,000 | 719,000,000 |  |  |  |  |
Payments for stock-based compensation |  |  |  |  |  |  |  |  |  |  |  |  | (22,000,000) | (86,000,000) | (127,000,000) |  |  |  |  |
Receipts from stock option exercises |  |  |  |  |  |  |  |  |  |  |  |  | 12,000,000 | 48,000,000 | 76,000,000 |  |  |  |  |
Dividends paid |  |  |  |  |  |  |  |  |  |  |  |  | (909,000,000) | (697,000,000) | (824,000,000) |  |  |  |  |
Net cash provided by (used in) financing activities |  |  |  |  |  |  |  |  |  |  |  |  | 616,000,000 | 243,000,000 | (219,000,000) |  |  |  |  |
Net cash used in investing activities |  |  |  |  |  |  |  |  |  |  |  |  | (4,300,000,000) | (3,503,000,000) | $ (3,294,000,000) |  |  |  |  |
Cash and cash equivalents, beginning of year |  |  |  | $ 515,000,000 |  |  |  | $ 515,000,000 |  |  |  |  | 515,000,000 |  |  |  |  |  |  |
Cash and cash equivalents, end of year |  |  |  |  | $ 21,000,000 |  |  |  | $ 515,000,000 |  |  |  | $ 21,000,000 | 515,000,000 |  |  |  |  |  |
Basis of Presentation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Minimum percentage of weighted-average common equity component authorization, set by CPUC (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  | 48.00% |  |  |  |  |  |  |
Weighted-average common equity component authorization, set by CPUC remaining over number of months (in months) |  |  |  |  |  |  |  |  |  |  |  |  | 37 months |  |  |  |  |  |  |
Waiver threshold percent |  |  |  |  |  |  |  |  |  |  |  |  | 47.00% |  |  |  |  |  |  |
After-tax charge excused from capital structure |  | $ 448,000,000 |  |  |  |  |  |  |  |  |  |  |  | $ 448,000,000 |  |  |  |  |  |
Weighted-average common equity component of total capitalization percent |  |  |  |  |  |  |  |  |  |  |  |  | 49.70% |  |  |  |  |  |  |
Capacity to pay additional dividends |  |  |  |  |  |  |  |  |  |  |  |  | $ 459,000,000 |  |  |  |  |  |  |
Restriction on net assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 13,300,000,000 |  |  |  |
SCE | Multi-year credit facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt and Credit Agreements |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitment |  |  | $ 3,000,000,000 |  |  |  |  |  |  |  |  |  |  |  |  | 3,000,000,000 | $ 2,750,000,000 |  |  |
Number of one year extension options | extension |  |  | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outstanding borrowings (excluding discount) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (721,000,000) |  |  |  |
Amount available |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2,089,000,000 |  |  |  |
Line of credit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt and Credit Agreements |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average interest rate (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2.56% |  |
Line of credit | SCE |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt and Credit Agreements |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average interest rate (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2.46% |  |
Subsequent event | SCE |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis of Presentation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average common equity component of total capitalization percent | 47.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial paper | SCE | Multi-year credit facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt and Credit Agreements |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outstanding borrowings (excluding discount) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ (738,000,000) |  |
Weighted average interest rate (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3.23% |  | 1.75% |  |
Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis of Presentation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends declared but not paid |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 200,000,000 |  | $ 197,000,000 | 177,000,000 |
Common Stock | SCE |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis of Presentation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends declared but not paid |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 |  | $ 212,000,000 | $ 0 |

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