INVESTMENTS - Investments in Consolidated Variable Interest Entities (Detail) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Variable Interest Entity [Line Items]
Other Investments, amortized cost	$ 1,094	$ 294
Asset derivatives	1,662	676
Assets, fair value	91,030	72,996
Liability derivatives	601	371
Liabilities	121,316	100,548
Liabilities, fair value disclosure	601	371
Variable Interest Entity, Consolidated
Variable Interest Entity [Line Items]
Securities available for sale, fixed maturities, amortized cost	4,870	3,739
Securities available for sale, fixed maturities, fair value	5,494	4,554
Securities available for sale, perpetual securities, amortized cost	273	255
Securities available for sale, perpetual securities, fair value	219	228
Available-for-sale equity securities, amortized cost basis	1,036	363
Available-for-sale securities, equity securities	1,014	363
Other Investments, amortized cost	489	0
Other investments, fair value	494	0
Asset derivative, amortized cost	168	102
Asset derivatives	168	102
Assets, amortized cost	6,836	4,459
Assets, fair value	7,389	5,247
Liability derivatives, amortized cost	124	293
Liability derivatives	124	293
Liabilities	124	293
Liabilities, fair value disclosure	$ 124	$ 293