FAIR VALUE MEASUREMENTS (Details - Investments in certain other invested assets, including private equity funds, hedge funds and other alternative investments) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value Using Net Asset Value Per Share or its equivalent	$ 5,549	$ 4,966
Unfunded Commitments	2,666	1,956
Direct private equity
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value Using Net Asset Value Per Share or its equivalent	3,220	2,250
Unfunded Commitments	$ 2,665	1,947
Average original expected lives	10 years
Direct private equity | Maximum [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Average original expected lives, Increments	2 years
Direct private equity | Minimum [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Average original expected lives, Increments	1 year
Leveraged buyout
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value Using Net Asset Value Per Share or its equivalent	$ 1,189	847
Unfunded Commitments	1,543	1,327
Real Estate / Infrastructure
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value Using Net Asset Value Per Share or its equivalent	400	190
Unfunded Commitments	290	83
Venture capital
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value Using Net Asset Value Per Share or its equivalent	111	126
Unfunded Commitments	155	127
Growth equity
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value Using Net Asset Value Per Share or its equivalent	422	362
Unfunded Commitments	57	28
Mezzanine
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value Using Net Asset Value Per Share or its equivalent	325	211
Unfunded Commitments	414	75
Other
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value Using Net Asset Value Per Share or its equivalent	773	514
Unfunded Commitments	206	307
Hedge funds
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value Using Net Asset Value Per Share or its equivalent	2,329	2,716
Unfunded Commitments	1	9
Event-driven
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value Using Net Asset Value Per Share or its equivalent	727	787
Unfunded Commitments	0	0
Long-short
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value Using Net Asset Value Per Share or its equivalent	539	863
Unfunded Commitments	0	0
Macro
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value Using Net Asset Value Per Share or its equivalent	894	887
Unfunded Commitments	0	0
Distressed
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value Using Net Asset Value Per Share or its equivalent	1	21
Unfunded Commitments	0	8
Other
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value Using Net Asset Value Per Share or its equivalent	168	158
Unfunded Commitments	$ 1	$ 1