INVESTMENTS - Investments in Consolidated Variable Interest Entities (Detail) - USD ($) $ in Millions		Sep. 30, 2017	Dec. 31, 2016
Variable Interest Entity [Line Items]
Other Investments, amortized cost	[1]	$ 2,358	$ 1,450
Asset derivatives		479	1,207
Assets, fair value		88,669	83,044
Liability derivatives		974	1,998
Liabilities		114,106	109,337
Liabilities, fair value disclosure		974	1,998
Variable Interest Entity, Consolidated
Variable Interest Entity [Line Items]
Securities available for sale, fixed maturities, amortized cost		4,274	4,168
Securities available for sale, fixed maturities, fair value		5,224	4,982
Securities available for sale, perpetual securities, amortized cost		239	237
Securities available for sale, perpetual securities, fair value		211	208
Available-for-sale equity securities, amortized cost basis		595	972
Available-for-sale securities, equity securities		690	1,044
Other Investments, amortized cost	[2]	1,500	819
Other investments, fair value	[2]	1,491	789
Asset derivative, amortized cost	[3]	148	127
Asset derivatives	[3]	148	127
Assets, amortized cost		6,756	6,323
Assets, fair value		7,764	7,150
Liability derivatives, amortized cost	[3]	132	146
Liability derivatives	[3]	132	146
Liabilities		132	146
Liabilities, fair value disclosure		$ 132	$ 146

[1] Includes $1,500 in 2017 and $819 in 2016 of loan receivables and limited partnerships from consolidated variable interest entities

[2] Consists of CMLs, MMLs, and alternative investments in limited partnerships

[3] Consists entirely of derivatives