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Changes in Accumulated Other Comprehensive Loss
 6 Months Ended
Jun. 30, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items]  
Changes in Accumulated Other Comprehensive Loss
Changes in Accumulated Other Comprehensive Loss
 
The following tables show the changes in accumulated other comprehensive loss, including reclassification adjustments, net of tax, by component for the three and six months ended June 30, 2015 and 2014 (dollars in thousands):
 
Three Months Ended June 30, 2015
 
Three Months Ended June 30, 2014
 
Derivative
Instruments
 
Pension and 
Other
Postretirement
Benefits
 
Total
 
Derivative
Instruments
 
Pension and  
Other
Postretirement
Benefits
 
Total
Beginning balance, April 1
$
(9,209
)

$
(57,173
)

$
(66,382
)
 
$
(20,364
)

$
(54,538
)

$
(74,902
)
OCI (loss) before reclassifications
25

 
(969
)

(944
)
 
40


(2,072
)

(2,032
)
Amounts reclassified from accumulated other comprehensive loss
874

(a)
852

(b)
1,726

 
1,955

(a)
762

(b)
2,717

Net current period OCI (loss)
899

 
(117
)

782

 
1,995

 
(1,310
)

685

Ending balance,
June 30
$
(8,310
)

$
(57,290
)

$
(65,600
)
 
$
(18,369
)

$
(55,848
)

$
(74,217
)

(a)
These amounts represent realized gains and losses and are included in the computation of fuel and purchased power costs and are subject to the PSA.  See Note 7.
(b)
These amounts primarily represent amortization of actuarial loss, and are included in the computation of net periodic pension cost.  See Note 4.

 
Six Months Ended June 30, 2015
 
Six Months Ended June 30, 2014
 
Derivative
Instruments
 
Pension and 
Other
Postretirement
Benefits
 
Total
 
Derivative
Instruments
 
Pension and  
Other
Postretirement
Benefits
 
Total
Beginning balance, January 1
$
(10,385
)

$
(57,756
)

$
(68,141
)
 
$
(23,058
)

$
(54,995
)

$
(78,053
)
OCI (loss) before reclassifications
(775
)

(969
)

(1,744
)
 
(381
)

(2,072
)

(2,453
)
Amounts reclassified from accumulated other comprehensive loss
2,850

(a)
1,435

(b)
4,285

 
5,070

(a)
1,219

(b)
6,289

Net current period OCI (loss)
2,075

 
466


2,541

 
4,689

 
(853
)
 
3,836

Ending balance,
June 30
$
(8,310
)

$
(57,290
)

$
(65,600
)
 
$
(18,369
)

$
(55,848
)

$
(74,217
)

(a)
These amounts represent realized gains and losses and are included in the computation of fuel and purchased power costs and are subject to the PSA.  See Note 7.
(b)
These amounts primarily represent amortization of actuarial loss, and are included in the computation of net periodic pension cost.  See Note 4.
Arizona Public Service Company  
Accumulated Other Comprehensive Income (Loss) [Line Items]  
Changes in Accumulated Other Comprehensive Loss
Changes in Accumulated Other Comprehensive Loss
 
The following tables show the changes in accumulated other comprehensive loss, including reclassification adjustments, net of tax, by component for the three and six months ended June 30, 2015 and 2014 (dollars in thousands):
 
 
Three Months Ended June 30, 2015
 
Three Months Ended June 30, 2014
 
Derivative
Instruments
 
Pension and  
Other
Postretirement
Benefits
 
Total
 
Derivative
Instruments
 
Pension and 
Other
Postretirement
Benefits
 
Total
Beginning balance, April 1
$
(9,209
)

$
(37,267
)

$
(46,476
)
 
$
(20,364
)

$
(29,747
)

$
(50,111
)
OCI (loss) before reclassifications
25

 
(927
)

(902
)
 
40


(2,041
)

(2,001
)
Amounts reclassified from accumulated other comprehensive loss
874

(a)
853

(b)
1,727

 
1,954

(a)
758

(b)
2,712

Net current period OCI (loss)
899

 
(74
)

825

 
1,994

 
(1,283
)

711

Ending balance, June 30
$
(8,310
)

$
(37,341
)

$
(45,651
)
 
$
(18,370
)
 
$
(31,030
)

$
(49,400
)

(a)
These amounts represent realized gains and losses and are included in the computation of fuel and purchased power costs and are subject to the PSA.  See Note 7.
(b)
These amounts primarily represent amortization of actuarial loss and are included in the computation of net periodic pension cost.  See Note 4.

 
Six Months Ended June 30, 2015
 
Six Months Ended June 30, 2014
 
Derivative
Instruments
 
Pension and  
Other
Postretirement
Benefits
 
Total
 
Derivative
Instruments
 
Pension and 
Other
Postretirement
Benefits
 
Total
Beginning balance, January 1
$
(10,385
)
 
$
(37,948
)
 
$
(48,333
)
 
$
(23,059
)
 
$
(30,313
)
 
$
(53,372
)
OCI (loss) before reclassifications
(775
)
 
(927
)
 
(1,702
)
 
(381
)
 
(2,041
)
 
(2,422
)
Amounts reclassified from accumulated other comprehensive loss
2,850

(a)
1,534

(b)
4,384

 
5,070

(a)
1,324

(b)
6,394

Net current period OCI (loss)
2,075

 
607

 
2,682

 
4,689

 
(717
)
 
3,972

Ending balance, June 30
$
(8,310
)
 
$
(37,341
)
 
$
(45,651
)
 
$
(18,370
)
 
$
(31,030
)
 
$
(49,400
)

(a)
These amounts represent realized gains and losses and are included in the computation of fuel and purchased power costs and are subject to the PSA.  See Note 7.
(b)
These amounts primarily represent amortization of actuarial loss and are included in the computation of net periodic pension cost.  See Note 4.