Comprehensive Income (Loss) (Detail) (USD $) In Thousands	3 Months Ended	6 Months Ended	9 Months Ended	12 Months Ended
Jun. 30, 2011	Mar. 31, 2011	Sep. 30, 2010	Jun. 30, 2010	Mar. 31, 2010	Sep. 30, 2009	Jun. 30, 2009	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2009	Sep. 30, 2010	Sep. 30, 2009	Dec. 31, 2010	Dec. 31, 2009
Net income	$ 93,491	$ 78,410	$ 350,179	$ 53,731	$ 79,843	$ 229,708	$ (36,276)	$ 171,901	$ 133,574	$ (72,514)	$ 483,753	$ 157,195	$ 515,653	$ 152,485
Changes related to cash flow derivative hedges	16,521			(241,570)				208,775	(353,486)
Change in defined benefit plans	(216)							(216)
Foreign currency translation adjustments	9,488			(44,713)				39,389	(75,079)
Total comprehensive income (loss)	$ 119,284			$ (232,552)				$ 419,849	$ (294,991)

The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the reporting entity. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, but excludes any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

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+ Details

- Definition

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

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+ Details

- Definition

The increase (decrease) in accumulated comprehensive income during the period related to pension and other postretirement benefit plans, after tax. While for technical reasons this element has no balance attribute, the default assumption is a credit balance consistent with its label.

+ References+ Details

- Definition

Net of tax effect change in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges after taxes. A cash flow hedge is a hedge of the exposure to variability in the cash flows of a recognized asset or liability or a forecasted transaction that is attributable to a particular risk. The change includes an entity's share of an equity investee's increase or decrease in deferred hedging gains or losses. While for technical reasons this element has no balance attribute, the default assumption is a credit balance consistent with its label.

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- Definition

Adjustment that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency of the reporting entity, net of tax.

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