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Comprehensive Income (Loss)
9 Months Ended
Sep. 30, 2011
Statement of Income and Comprehensive Income [Abstract] 
Comprehensive Income (Loss)
COMPREHENSIVE INCOME (LOSS)

Comprehensive income (loss) consisted of the following:
 
Three months ended
 
September 30,
(in thousands)
2011
2010
Net income
$
87,599

$
38,304

Other comprehensive income (loss):
             
             
Current period change in fair value of derivative instruments, net of tax of $105.7 million and ($4.4) million
172,430

(7,244
)
Reclassification adjustment for derivative instruments, net of tax of ($6.4) million and ($20.7) million
(10,440
)
(33,849
)
Pension and postretirement plans, net of tax of ($5.6) million and ($3.6) million
(10,438
)
(6,678
)
Comprehensive income (loss)
$
239,151

$
(9,467
)

 
Nine months ended
 
September 30,
(in thousands)
2011
2010
Net income
$
245,192

$
210,557

Other comprehensive income (loss):
             
             
Current period change in fair value of derivative instruments, net of tax of $76.6 million and $55.9 million
125,005

91,141

Reclassification adjustment for derivative instruments, net of tax of ($6.2) million and ($56.9) million
(10,085
)
(92,914
)
Pension and postretirement plans, net of tax of ($4.9) million and ($2.9) million
(9,073
)
(5,420
)
Comprehensive income
$
351,039

$
203,364



(in thousands)
September 30, 2011
December 31, 2010
Unrealized gain (loss) on hedges, net of tax of $43.7 million and ($26.8) million
$
71,253

$
(43,667
)
Pension and postretirement plans, net of tax of ($21.4) million and ($16.5) million
(39,803
)
(30,730
)
Accumulated other comprehensive income (loss)
$
31,450

$
(74,397
)