INVESTMENTS - Investments in Consolidated Variable Interest Entities (Detail) - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Variable Interest Entity [Line Items]
Other Investments, amortized cost	$ 622	$ 294
Asset derivatives	1,963	676
Assets, fair value	89,185	72,996
Liability derivatives	542	371
Liabilities	118,737	100,548
Liabilities, fair value disclosure	542	371
Variable Interest Entity, Consolidated
Variable Interest Entity [Line Items]
Securities available for sale, fixed maturities, amortized cost	4,878	3,739
Securities available for sale, fixed maturities, fair value	5,493	4,554
Securities available for sale, perpetual securities, amortized cost	267	255
Securities available for sale, perpetual securities, fair value	197	228
Available-for-sale equity securities, amortized cost basis	1,018	363
Available-for-sale securities, equity securities	941	363
Other Investments, amortized cost	165	0
Other investments, fair value	169	0
Asset derivative, amortized cost	177	102
Asset derivatives	177	102
Assets, amortized cost	6,505	4,459
Assets, fair value	6,977	5,247
Liability derivatives, amortized cost	117	293
Liability derivatives	117	293
Liabilities	117	293
Liabilities, fair value disclosure	$ 117	$ 293