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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Comprehensive income:
Net income	$ 154,159	$ 166,266	$ 362,354	$ 380,170
Derivative instruments:
Net fair value (decrease) increase, net of tax of $(10), $5, $(9), and $(2), respectively	(17)	11	(15)	(2)
Reclassification of gains to net income, net of tax of $(72), $(76), $(217), and $(221), respectively	(119)	(119)	(356)	(355)
Other comprehensive loss	(136)	(108)	(371)	(357)
Comprehensive income	$ 154,023	$ 166,158	$ 361,983	$ 379,813

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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- Definition

Amount after tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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