INCOME TAXES - Reconciliation of the Beginning and Ending Amount of Unrecognized Tax Benefits (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Income Tax Contingency [Line Items]
Balance	$ 180	$ 170
Additions based on tax positions related to current year	1	1
Additions for tax positions of prior years	91	17
Reductions for tax positions of prior years	(11)	(6)
Foreign currency translation	(2)	4
Settlements	(2)	0
Lapse of statute	(6)	(6)
Balance	$ 251	$ 180