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Supplemental Cash Flows Information (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Cash payments for interest and taxes: |  |  |
Interest, net of amounts capitalized | $ 548 | $ 504 | $ 512
Tax payments, net of refunds | 1 | 18 | 1
Details of debt exchange: |  |  |
Pollution-control bonds redeemed (2.875%) | 0 | 0 | (203)
Pollution-control bonds issued (1.875%) | $ 0 | $ 0 | $ 203
2.875% Pollution-Control Bonds |  |  |
Details of debt exchange: |  |  |
Interest rate on converted debt | 2.875% | 2.875% | 2.875%
1.875% Pollution-Control Bonds Due in 2029 |  |  |
Details of debt exchange: |  |  |
Interest rate on converted debt | 1.875% | 1.875% | 1.875%
Common Stock |  |  |
Non-cash financing and investing activities: |  |  |
Dividends declared but not paid | $ 197 | $ 177 | $ 156
Preference stock |  |  |
Non-cash financing and investing activities: |  |  |
Dividends declared but not paid | 12 | 12 | 14
SCE |  |  |
Cash payments for interest and taxes: |  |  |
Interest, net of amounts capitalized | 509 | 475 | 478
Tax payments, net of refunds | 2 | 78 | 144
Details of debt exchange: |  |  |
Pollution-control bonds redeemed (2.875%) | 0 | 0 | (203)
Pollution-control bonds issued (1.875%) | 0 | 0 | 203
Accrued capital expenditures | $ 652 | $ 540 | 543
Reduction in lease obligation |  |  | $ 147
SCE | 2.875% Pollution-Control Bonds |  |  |
Details of debt exchange: |  |  |
Interest rate on converted debt | 2.875% | 2.875% | 2.875%
SCE | 1.875% Pollution-Control Bonds Due in 2029 |  |  |
Details of debt exchange: |  |  |
Interest rate on converted debt | 1.875% | 1.875% | 1.875%
SCE | Common Stock |  |  |
Non-cash financing and investing activities: |  |  |
Dividends declared but not paid | $ 212 | $ 0 | $ 0
SCE | Preference stock |  |  |
Non-cash financing and investing activities: |  |  |
Dividends declared but not paid | $ 12 | $ 12 | $ 14

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