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Accumulated Other Comprehensive Loss
 3 Months Ended
Mar. 31, 2018
Equity [Abstract]  
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Loss
The changes in accumulated other comprehensive loss, net of tax, consist of:
 
Edison International
 
SCE
 
Three months ended March 31,
(in millions)
2018
 
2017
 
2018
 
2017
Beginning balance
$
(43
)
 
$
(53
)
 
$
(19
)
 
$
(20
)
Pension and PBOP – net loss:
 
 
 
 
 
 
 
    Reclassified from accumulated other comprehensive loss1
2

 
2

 
2

 
1

Other2
(5
)
 
2

 
(5
)
 
1

Change
(3
)
 
4

 
(3
)
 
2

Ending Balance
$
(46
)
 
$
(49
)
 
$
(22
)
 
$
(18
)

1 
These items are included in the computation of net periodic pension and PBOP Plan expense. See Note 9 for additional information.
2 
Effective January 1, 2018, Edison International and SCE adopted an accounting standards update related to the measurement of financial instruments. As a result of this new accounting guidance, Edison International and SCE recognized cumulative effect adjustments to the opening balance of retained earnings and accumulated other comprehensive loss on January 1, 2018. See Note 1 for further information.