INVESTMENTS (Details - Components of Net investment income) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Investment [Line Items]
Total investment income	$ 12,969	$ 14,699	$ 14,518
Investment expenses	493	520	453
Net investment income	12,476	14,179	14,065
Fixed maturity securities, including short-term investments
Investment [Line Items]
Total investment income	10,323	10,435	11,314
Other fixed maturity securities
Investment [Line Items]
Total investment income	7	660	331
Equity securities
Investment [Line Items]
Total investment income	(162)	34	(5)
Interest on mortgage and other loans
Investment [Line Items]
Total investment income	1,874	1,661	1,526
Alternative investments
Investment [Line Items]
Total investment income	655	1,475	693
Real estate
Investment [Line Items]
Total investment income	257	144	150
Other investments
Investment [Line Items]
Total investment income	$ 15	$ 290	$ 509

Amount, before investment expense, of income (loss) earned from investments. Includes unrealized and realized gains (losses).

No definition available.

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- Definition

Line items represent reporting concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 12
-Sentence Column A

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- Definition

Amount of expenses related to the generation of investment income.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.9)
-URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04.2)
-URI http://asc.fasb.org/extlink&oid=114873790&loc=SL114874131-224263

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- Definition

Amount, after investment expense, of income earned from investments in securities and real estate. Includes, but is not limited to, real estate investment, policy loans, dividends, and interest. Excludes realized gain (loss) on investments.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(2))
-URI http://asc.fasb.org/extlink&oid=114873790&loc=SL114874131-224263

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