Comprehensive Income (Tables)

9 Months Ended

Sep. 30, 2011

Statement of Income and Comprehensive Income [Abstract]

Schedule of Comprehensive Income (Loss)

	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

Schedule of Accumulated Other Comprehensive Income (Loss)

(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	)