DEBT AND FINANCING COSTS - Non-Recurring Fair Value Measurement (Detail) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Debt Instrument [Line Items]
Money market lines of credit, Carrying Amount	$ 64	$ 31
Commercial paper, Carrying Amount	1,792	0
Notes and debentures, Carrying Amount	9,778	7,185
Total Debt, Carrying Amount	11,634	7,216
Total Debt, Fair Value	13,561	8,704
Money Market Lines Of Credit [Member]
Debt Instrument [Line Items]
Total Debt, Fair Value	64	31
Commercial Paper [Member]
Debt Instrument [Line Items]
Total Debt, Fair Value	1,792
Notes And Debentures [Member]
Debt Instrument [Line Items]
Total Debt, Fair Value	$ 11,705	$ 8,673