The maximum number of months premiums are earned on a quota share reinsurance contract.

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- Definition

Disclosure about summary of significant accounting policies of the entities.

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No definition available.

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- Definition

The valuation allowance as of the balance sheet date to reduce the gross amount of receivables to estimated net realizable value, which would be presented in parentheses on the face of the balance sheet.

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Amount of cumulative effect of the change in accounting principle or new accounting pronouncement on retained earnings or other components of equity or net assets in the statement of financial position as of the beginning of the earliest period presented.

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- Definition

Cash received for the settlement of litigation during the current period.

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-Name Accounting Standards Codification
-Topic 230
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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details - Other significant accounting policies) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Summary of Significant Accounting Policies [Line Items]
Cumulative effect of change in accounting principle		$ (8)
Earning pattern of a quota share reinsurance contract	24 months
Other income
Proceeds from legal settlements	$ 11	27	$ 44
Premiums and other receivables
Allowance for doubtful accounts on premiums and other receivables	216	236
Accumulated Other Comprehensive Income (Loss)
Summary of Significant Accounting Policies [Line Items]
Cumulative effect of change in accounting principle		(576)
Retained Earnings
Summary of Significant Accounting Policies [Line Items]
Cumulative effect of change in accounting principle		$ 568
Accounting Standards Update - Recognition and Measurement of Financial Assets and Financial Liabilities \| Accumulated Other Comprehensive Income (Loss)
Summary of Significant Accounting Policies [Line Items]
Cumulative effect of change in accounting principle	(824)
Accounting Standards Update - Recognition and Measurement of Financial Assets and Financial Liabilities \| Retained Earnings
Summary of Significant Accounting Policies [Line Items]
Cumulative effect of change in accounting principle	824
Accounting Standards Update - Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income \| Accumulated Other Comprehensive Income (Loss)
Summary of Significant Accounting Policies [Line Items]
Cumulative effect of change in accounting principle	248
Accounting Standards Update - Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income \| Retained Earnings
Summary of Significant Accounting Policies [Line Items]
Cumulative effect of change in accounting principle	$ (248)