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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) Statement (USD $) In Millions, unless otherwise specified	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 469	$ 271	$ 60
Net unrealized gain (loss) on cash flow hedges	4	78	99
Reclassification to earnings from cash flow hedges	(2)	(1)	(35)
Total other comprehensive income (loss)	2	77	64
Total comprehensive income (loss)	$ 471	$ 348	$ 124

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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