INVESTMENTS - Investments in Consolidated Variable Interest Entities (Detail) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Variable Interest Entity [Line Items]
Securities held to maturity, fixed maturities, amortized cost	$ 33,293	$ 34,242
Securities held to maturity, fixed maturities, fair value	36,365	38,497
Asset derivatives	752	802
Assets, fair value	70,713	73,901
Liability derivatives	502	2,423
Liabilities	98,563	101,420
Liabilities, fair value disclosure	502	2,423
Variable Interest Entity, Consolidated
Variable Interest Entity [Line Items]
Securities available for sale, fixed maturities, amortized cost	3,446	3,020
Securities available for sale, fixed maturities, fair value	4,440	4,166
Securities available for sale, perpetual securities, amortized cost	281	405
Securities available for sale, perpetual securities, fair value	272	429
Securities held to maturity, fixed maturities, amortized cost	82	83
Securities held to maturity, fixed maturities, fair value	80	84
Asset derivative, amortized cost	100	106
Asset derivatives	100	106
Assets, amortized cost	3,909	3,614
Assets, fair value	4,892	4,785
Liability derivatives, amortized cost	322	318
Liability derivatives	322	318
Liabilities	322	318
Liabilities, fair value disclosure	$ 322	$ 318