INVESTMENTS - Investments in Variable Interest Entities (Detail) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Variable Interest Entity, Consolidated
Variable Interest Entity [Line Items]
Amortized Cost	$ 6,476	$ 6,997
Fair Value	6,822	7,206
Variable Interest Entity, Not Consolidated
Variable Interest Entity [Line Items]
Amortized Cost	12,911	13,753
Fair Value	12,927	13,714
Variable Interest Entities
Variable Interest Entity [Line Items]
Amortized Cost	19,387	20,750
Fair Value	$ 19,749	$ 20,920