INVESTMENTS - Investments in Variable Interest Entities (Detail) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Variable Interest Entity, Consolidated
Variable Interest Entity [Line Items]
Amortized Cost	$ 6,285	$ 6,997
Fair Value	6,920	7,206
Variable Interest Entity, Not Consolidated
Variable Interest Entity [Line Items]
Amortized Cost	13,340	13,753
Fair Value	13,976	13,714
Variable Interest Entities
Variable Interest Entity [Line Items]
Amortized Cost	19,625	20,750
Fair Value	$ 20,896	$ 20,920