XML 130 R88.htm IDEA: XBRL DOCUMENT

Change in the Fair Value for Interest Rate Contracts and the Related Hedged Items (Detail) (Fair Value Hedging, Interest Rate Contract, Interest Expense Long Term Debt [Member], USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Fair Value Hedging \| Interest Rate Contract \| Interest Expense Long Term Debt [Member]
Derivatives, Fair Value [Line Items]
Change in fair value of interest rate swaps hedging long-term debt	$ (35)	$ 258	$ (56)	$ 238
Change in fair value of hedged long-term debt	$ 44	$ (255)	$ 59	$ (242)

Amount of unrealized gain (loss) included in earnings for the period related to the fair value of the hedged item in an interest rate fair value hedge, which was offset by the gain (loss) on the hedging instrument to the extent that the fair value hedge is determined to be effective.

+ References+ Details