INVESTMENTS - Investments in Consolidated Variable Interest Entities (Detail) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Variable Interest Entity [Line Items]
Securities held to maturity, fixed maturities, amortized cost	$ 33,729	$ 34,242
Securities held to maturity, fixed maturities, fair value	36,948	38,497
Asset derivatives	877	802
Assets, fair value	71,982	73,901
Liability derivatives	384	2,423
Liabilities	100,200	101,420
Liabilities, fair value disclosure	384	2,423
Variable Interest Entity, Consolidated
Variable Interest Entity [Line Items]
Securities available for sale, fixed maturities, amortized cost	3,651	3,020
Securities available for sale, fixed maturities, fair value	4,541	4,166
Securities available for sale, perpetual securities, amortized cost	287	405
Securities available for sale, perpetual securities, fair value	269	429
Securities held to maturity, fixed maturities, amortized cost	83	83
Securities held to maturity, fixed maturities, fair value	80	84
Asset derivative, amortized cost	106	106
Asset derivatives	106	106
Assets, amortized cost	4,127	3,614
Assets, fair value	4,996	4,785
Liability derivatives, amortized cost	343	318
Liability derivatives	343	318
Liabilities	343	318
Liabilities, fair value disclosure	$ 343	$ 318