INCOME TAXES - Reconciliation of Beginning and Ending Amount of Unrecognized Tax Benefits (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Income Tax Disclosure [Abstract]
Tax deductions	$ 7		$ 10		$ 8
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance, beginning of year	31	[1]	24	[1]
Additions for tax positions of prior years	7		7
Settlements	(3)		0
Reductions for tax positions of prior years	(14)		0
Balance, end of year	$ 21	[1]	$ 31	[1]

[1] Amounts do not include tax deductions of $7 at December 31, 2012, $10 at December 31, 2011, and $8 at January 1, 2011.