Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2012

Financial Instruments

Carrying amounts and fair values of the financial instruments

	September 30, 2012				December 31, 2011
	Carrying amount		Fair value		Carrying amount		Fair value
Cash and cash equivalents	$	6,001	$	6,001	$	4,017	$	4,017
Notes receivable and working capital loan receivable	111		111		139		139
Restricted cash investments	835		882		934		975
Long-term debt, including current maturities	13,912		15,550		12,698		13,074
Long-term debt of consolidated variable interest entities, including current maturities	205		205		838		838
Derivative instruments, assets	7		7		36		36
Derivative instruments, liabilities	18		18		38		38