OPERATING SEGMENTS AND GEOGRAPHIC AREAS (Reconciliation of EBITDA to Income Before Income Taxes) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011		Dec. 31, 2010		Dec. 31, 2009
Reconciliation of EBITDA to Income Before Income Taxes [Abstract]
EBITDA	$ 7,785	[1]	$ 7,200	[1]	$ 4,828	[1]
Depreciation and amortization	2,883		2,962		2,827
Interest income	40		37		39
Interest expense and amortization of debt discount	1,341		1,473		1,571
Income from Continuing Operations Before Income Taxes	$ 3,601		$ 2,802		$ 469

[1] A reconciliation of EBITDA to “Income from Continuing Operations Before Income Taxes” is provided below.