XML 71 R38.htm IDEA: XBRL DOCUMENT v2.4.0.6
Fair Value Measurements (Recurring Fair Value Measurements) (Details) (USD $)
In Millions, unless otherwise specified
Sep. 30, 2012
Jun. 30, 2012
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2011
Dec. 31, 2010
Assets at Fair Value            
Money market funds $ 28   $ 21      
Nuclear decommissioning trusts 3,997 3,810 3,592 3,393 3,657 3,480
Liabilities at Fair Value            
Percentage of equity investments located in the United States (as a percent) 67.00%   70.00%      
Collateralized mortgage obligations and other asset backed securities 42   22      
Receivables (payables) net related to investments 8   25      
Cash surrender value of life insurance 70   81      
Stocks
           
Assets at Fair Value            
Nuclear decommissioning trusts 2,227   1,899      
Municipal bonds
           
Assets at Fair Value            
Nuclear decommissioning trusts 654   756      
U.S. government and agency securities
           
Assets at Fair Value            
Nuclear decommissioning trusts 589   580      
Corporate bonds
           
Assets at Fair Value            
Nuclear decommissioning trusts 374   317      
Level 3
           
Assets at Fair Value            
Total assets 113          
Liabilities at Fair Value            
Total liabilities 1,043          
Fair Value, Measurements, Recurring | Level 1
           
Assets at Fair Value            
Money market funds 28 [1]   21 [1]      
Derivative contracts 0   0      
Long-term disability plan 8   8      
Nuclear decommissioning trusts 2,694   2,332      
Total assets 2,730 [2]   2,361 [2]      
Liabilities at Fair Value            
Derivative contracts 0   0      
Total liabilities 0   0      
Net assets (liabilities) 2,730   2,361      
Fair Value, Measurements, Recurring | Level 1 | Electricity
           
Assets at Fair Value            
Derivative contracts 0   0      
Liabilities at Fair Value            
Derivative contracts 0   0      
Fair Value, Measurements, Recurring | Level 1 | Natural gas
           
Assets at Fair Value            
Derivative contracts     0      
Liabilities at Fair Value            
Derivative contracts 0   0      
Fair Value, Measurements, Recurring | Level 1 | CRRs
           
Assets at Fair Value            
Derivative contracts 0   0      
Fair Value, Measurements, Recurring | Level 1 | Tolling
           
Assets at Fair Value            
Derivative contracts 0   0      
Liabilities at Fair Value            
Derivative contracts 0   0      
Fair Value, Measurements, Recurring | Level 1 | Stocks
           
Assets at Fair Value            
Nuclear decommissioning trusts 2,227 [3]   1,899 [3]      
Fair Value, Measurements, Recurring | Level 1 | Municipal bonds
           
Assets at Fair Value            
Nuclear decommissioning trusts 0   0      
Fair Value, Measurements, Recurring | Level 1 | U.S. government and agency securities
           
Assets at Fair Value            
Nuclear decommissioning trusts 467   433      
Fair Value, Measurements, Recurring | Level 1 | Corporate bonds
           
Assets at Fair Value            
Nuclear decommissioning trusts 0 [4]   0 [4]      
Fair Value, Measurements, Recurring | Level 1 | Short-term investments, primarily cash equivalents
           
Assets at Fair Value            
Nuclear decommissioning trusts 0 [5]   0 [5]      
Fair Value, Measurements, Recurring | Level 2
           
Assets at Fair Value            
Money market funds 0 [1]   0 [1]      
Derivative contracts 1   5      
Long-term disability plan 0   0      
Nuclear decommissioning trusts 1,295   1,235      
Total assets 1,296 [2]   1,240 [2]      
Liabilities at Fair Value            
Derivative contracts 115   239      
Total liabilities 115   239      
Net assets (liabilities) 1,181   1,001      
Fair Value, Measurements, Recurring | Level 2 | Electricity
           
Assets at Fair Value            
Derivative contracts 1   0      
Liabilities at Fair Value            
Derivative contracts 0   5      
Fair Value, Measurements, Recurring | Level 2 | Natural gas
           
Assets at Fair Value            
Derivative contracts     5      
Liabilities at Fair Value            
Derivative contracts 115   234      
Fair Value, Measurements, Recurring | Level 2 | CRRs
           
Assets at Fair Value            
Derivative contracts 0   0      
Fair Value, Measurements, Recurring | Level 2 | Tolling
           
Assets at Fair Value            
Derivative contracts 0   0      
Liabilities at Fair Value            
Derivative contracts 0   0      
Fair Value, Measurements, Recurring | Level 2 | Stocks
           
Assets at Fair Value            
Nuclear decommissioning trusts 0 [3]   0 [3]      
Fair Value, Measurements, Recurring | Level 2 | Municipal bonds
           
Assets at Fair Value            
Nuclear decommissioning trusts 654   756      
Fair Value, Measurements, Recurring | Level 2 | U.S. government and agency securities
           
Assets at Fair Value            
Nuclear decommissioning trusts 122   147      
Fair Value, Measurements, Recurring | Level 2 | Corporate bonds
           
Assets at Fair Value            
Nuclear decommissioning trusts 374 [4]   317 [4]      
Fair Value, Measurements, Recurring | Level 2 | Short-term investments, primarily cash equivalents
           
Assets at Fair Value            
Nuclear decommissioning trusts 145 [5]   15 [5]      
Fair Value, Measurements, Recurring | Level 3
           
Assets at Fair Value            
Money market funds 0 [1]   0 [1]      
Derivative contracts 113   133      
Long-term disability plan 0   0      
Nuclear decommissioning trusts 0   0      
Total assets 113 [2]   133 [2]      
Liabilities at Fair Value            
Derivative contracts 1,043   887      
Total liabilities 1,043   887      
Net assets (liabilities) (930)   (754)      
Fair Value, Measurements, Recurring | Level 3 | Electricity
           
Assets at Fair Value            
Derivative contracts 9   1      
Liabilities at Fair Value            
Derivative contracts 9   65      
Fair Value, Measurements, Recurring | Level 3 | Natural gas
           
Assets at Fair Value            
Derivative contracts     0      
Liabilities at Fair Value            
Derivative contracts 6   23      
Fair Value, Measurements, Recurring | Level 3 | CRRs
           
Assets at Fair Value            
Derivative contracts 100   122      
Fair Value, Measurements, Recurring | Level 3 | Tolling
           
Assets at Fair Value            
Derivative contracts 4   10      
Liabilities at Fair Value            
Derivative contracts 1,028   799      
Fair Value, Measurements, Recurring | Level 3 | Stocks
           
Assets at Fair Value            
Nuclear decommissioning trusts 0 [3]   0 [3]      
Fair Value, Measurements, Recurring | Level 3 | Municipal bonds
           
Assets at Fair Value            
Nuclear decommissioning trusts 0   0      
Fair Value, Measurements, Recurring | Level 3 | U.S. government and agency securities
           
Assets at Fair Value            
Nuclear decommissioning trusts 0   0      
Fair Value, Measurements, Recurring | Level 3 | Corporate bonds
           
Assets at Fair Value            
Nuclear decommissioning trusts 0 [4]   0 [4]      
Fair Value, Measurements, Recurring | Level 3 | Short-term investments, primarily cash equivalents
           
Assets at Fair Value            
Nuclear decommissioning trusts 0 [5]   0 [5]      
Fair Value, Measurements, Recurring | Netting and Collateral
           
Assets at Fair Value            
Money market funds 0 [1],[6]   0 [1],[6]      
Derivative contracts (3) [6]   (3) [6]      
Long-term disability plan 0 [6]   0 [6]      
Nuclear decommissioning trusts 0 [6]   0 [6]      
Total assets (3) [2],[6]   (3) [2],[6]      
Liabilities at Fair Value            
Derivative contracts (47) [6]   (55) [6]      
Total liabilities (47) [6]   (55) [6]      
Net assets (liabilities) 44 [6]   52 [6]      
Fair Value, Measurements, Recurring | Netting and Collateral | Electricity
           
Assets at Fair Value            
Derivative contracts (3) [6]   0 [6]      
Liabilities at Fair Value            
Derivative contracts 0 [6]   (2) [6]      
Fair Value, Measurements, Recurring | Netting and Collateral | Natural gas
           
Assets at Fair Value            
Derivative contracts     (3) [6]      
Liabilities at Fair Value            
Derivative contracts (47) [6]   (53) [6]      
Fair Value, Measurements, Recurring | Netting and Collateral | CRRs
           
Assets at Fair Value            
Derivative contracts 0 [6]   0 [6]      
Fair Value, Measurements, Recurring | Netting and Collateral | Tolling
           
Assets at Fair Value            
Derivative contracts 0 [6]   0 [6]      
Liabilities at Fair Value            
Derivative contracts 0 [6]   0 [6]      
Fair Value, Measurements, Recurring | Netting and Collateral | Stocks
           
Assets at Fair Value            
Nuclear decommissioning trusts 0 [3],[6]   0 [3],[6]      
Fair Value, Measurements, Recurring | Netting and Collateral | Municipal bonds
           
Assets at Fair Value            
Nuclear decommissioning trusts 0 [6]   0 [6]      
Fair Value, Measurements, Recurring | Netting and Collateral | U.S. government and agency securities
           
Assets at Fair Value            
Nuclear decommissioning trusts 0 [6]   0 [6]      
Fair Value, Measurements, Recurring | Netting and Collateral | Corporate bonds
           
Assets at Fair Value            
Nuclear decommissioning trusts 0 [4],[6]   0 [4],[6]      
Fair Value, Measurements, Recurring | Netting and Collateral | Short-term investments, primarily cash equivalents
           
Assets at Fair Value            
Nuclear decommissioning trusts 0 [5],[6]   0 [5],[6]      
Fair Value, Measurements, Recurring | Total
           
Assets at Fair Value            
Money market funds 28 [1]   21 [1]      
Derivative contracts 111   135      
Long-term disability plan 8   8      
Nuclear decommissioning trusts 3,989   3,567      
Total assets 4,136 [2]   3,731 [2]      
Liabilities at Fair Value            
Derivative contracts 1,111   1,071      
Total liabilities 1,111   1,071      
Net assets (liabilities) 3,025   2,660      
Fair Value, Measurements, Recurring | Total | Electricity
           
Assets at Fair Value            
Derivative contracts 7   1      
Liabilities at Fair Value            
Derivative contracts 9   68      
Fair Value, Measurements, Recurring | Total | Natural gas
           
Assets at Fair Value            
Derivative contracts     2      
Liabilities at Fair Value            
Derivative contracts 74   204      
Fair Value, Measurements, Recurring | Total | CRRs
           
Assets at Fair Value            
Derivative contracts 100   122      
Fair Value, Measurements, Recurring | Total | Tolling
           
Assets at Fair Value            
Derivative contracts 4   10      
Liabilities at Fair Value            
Derivative contracts 1,028   799      
Fair Value, Measurements, Recurring | Total | Stocks
           
Assets at Fair Value            
Nuclear decommissioning trusts 2,227 [3]   1,899 [3]      
Fair Value, Measurements, Recurring | Total | Municipal bonds
           
Assets at Fair Value            
Nuclear decommissioning trusts 654   756      
Fair Value, Measurements, Recurring | Total | U.S. government and agency securities
           
Assets at Fair Value            
Nuclear decommissioning trusts 589   580      
Fair Value, Measurements, Recurring | Total | Corporate bonds
           
Assets at Fair Value            
Nuclear decommissioning trusts 374 [4]   317 [4]      
Fair Value, Measurements, Recurring | Total | Short-term investments, primarily cash equivalents
           
Assets at Fair Value            
Nuclear decommissioning trusts $ 145 [5]   $ 15 [5]      
[1] Money market funds are included in cash and cash equivalents on SCE's consolidated balance sheets.
[2] Excludes other investments of $70 million and $81 million at September 30, 2012 and December 31, 2011, respectively, primarily related to the cash surrender value of company owned life insurance investments which are used to fund certain executive benefits including deferred compensation.
[3] Approximately 67% and 70% of the equity investments were located in the United States at September 30, 2012 and December 31, 2011, respectively.
[4] At September 30, 2012 and December 31, 2011, corporate bonds were diversified and included collateralized mortgage obligations and other asset backed securities of $42 million and $22 million, respectively.
[5] Excludes net receivables of $8 million and $25 million at September 30, 2012 and December 31, 2011, respectively, of interest and dividend receivables as well as receivables and payables related to pending securities sales and
[6] Represents the netting of assets and liabilities under master netting agreements and cash collateral across the levels of the fair value hierarchy. Netting among positions classified within the same level is included in that level.