XML 67 R65.htm IDEA: XBRL DOCUMENT

Income Taxes - Schedule of Provision for Income Taxes with Income Tax at Federal Statutory Rate (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Reconciliation Of Income Taxes [Line Items]
Federal income tax provision at statutory rate (35%)	$ 404,319	$ 240,606	$ 90,463
State income tax provision (benefit), net of Federal benefit	15,213	17,684	(681)
Other, net	(3,721)	83	430
Provision for income taxes	$ 415,811	$ 258,373	$ 90,212

- Definition

The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations.

+ References+ Details

- Definition

The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

+ References+ Details