ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Dec. 31, 2011	Dec. 31, 2010
Stockholders' Equity Attributable to Parent	$ 23,026		$ 22,281
Net change in unrealized gains (losses) on investments	57	14
Translation adjustments	282	441
Adjustments to pension and other postretirement benefit plans	85	72
Net gains (losses) on cash flow hedging derivative instruments	(14)	(9)
Accumulated Other Comprehensive Income (Loss) [Member]
Stockholders' Equity Attributable to Parent	(5,586)	(3,881)	(5,996)	(4,399)
Accumulated Unrealized Gains (Loss) on Investments [Member]
Stockholders' Equity Attributable to Parent	135	125	78	111
Net change in unrealized gains (losses) on investments	57	14
Accumulated Translation Adjustments [Member]
Stockholders' Equity Attributable to Parent	354	808	72	367
Translation adjustments	282	441
Accumulated Pension and Other Postretirement Benefit Plans Adjustments [Member]
Stockholders' Equity Attributable to Parent	(6,049)	(4,799)	(6,134)	(4,871)
Adjustments to pension and other postretirement benefit plans	85	72
Accumulated Derivative Gain (Loss) [Member]
Stockholders' Equity Attributable to Parent	(26)	(15)	(12)	(6)
Net gains (losses) on cash flow hedging derivative instruments	(24)	(2)
Reclassification to earnings	$ (10)	$ 7