Condensed Statements of Comprehensive Earnings (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Net earnings	$ 61,364	$ 81,016	$ 93,798	$ 114,914
Other comprehensive earnings, net of income taxes:
Amortization of accumulated other comprehensive loss (AOCL) related to de-designated hedges, net of income tax benefits of $0, $618, $0 and $1,394, respectively	0	1,009	0	2,276
Other comprehensive earnings	0	1,009	0	2,276
Comprehensive earnings	$ 61,364	$ 82,025	$ 93,798	$ 117,190

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income. Excludes changes in equity resulting from investments by owners and distributions to owners.

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