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Accumulated Other Comprehensive Loss (Tables)
 12 Months Ended
Dec. 31, 2018
Equity [Abstract]  
Components of Accumulated Other Comprehensive Loss
The changes in accumulated other comprehensive loss, net of tax, consist of:
 
Edison International
 
SCE
 
Years ended December 31,
(in millions)
2018
 
2017
 
2018
 
2017
Beginning balance
$
(43
)
 
$
(53
)
 
$
(19
)
 
$
(20
)
Pension and PBOP – net gain (loss):
 
 
 
 
 
 
 
Other comprehensive (loss) income before reclassifications
(9
)
 
3

 
(3
)
 
(2
)
Reclassified from accumulated other comprehensive loss1
6

 
7

 
4

 
3

Other2
(4
)
 
—

 
(5
)
 
—

Change
(7
)

10

 
(4
)
 
1

Ending balance
$
(50
)
 
$
(43
)
 
$
(23
)
 
$
(19
)

1 
These items are included in the computation of net periodic pension and PBOP expenses. See Note 9 for additional information.
2 
Edison International and SCE recognized cumulative effect adjustments to the opening balance of retained earnings and accumulated other comprehensive loss on January 1, 2018 related to the adoption of the accounting standards update on the measurement of financial instruments. See Note 1 for further information.