SIGNIFICANT ACCOUNTING POLICIES (Tables)

12 Months Ended

Dec. 31, 2019

Accounting Policies [Abstract]

Schedule of New Accounting Pronouncements and Changes in Accounting Principles

Adoption of New Accounting Pronouncements

Description	Effect on the Financial Statement or Other Significant Matters
ASU 2016-02: Leases (Topic 842)
This ASU contains revised guidance to lease accounting that requires lessees to recognize on the balance sheet a “right-of-use” asset and a lease liability for virtually all lease arrangements, including those embedded in other contracts. Lessor accounting remains substantially unchanged from the current model but has been updated to align with certain changes made to the lessee model.	On January 1, 2019, the Company adopted the new leases standard using the simplified modified retrospective transition method, as of the adoption date. Prior comparable periods were not adjusted or presented under this method. We applied several practical expedients offered by ASC 842 upon adoption of this standard. These included continuing to account for existing leases based on judgment made under legacy U.S. GAAP as it relates to determining classification of leases, unamortized initial direct costs and whether contracts are leases or contain leases. We also used the practical expedient to use hindsight in determining lease terms (using knowledge and expectations as of the standard’s adoption date instead of the previous assumptions under legacy U.S. GAAP) and evaluated impairment of our right-of-use (“RoU”) assets in the transition period (using most up-to-date information.) Adoption of this standard resulted in the recognition, as of January 1, 2019, of additional RoU operating lease assets of $347 million reported in Other assets and operating lease liabilities of $439 million reported in Other liabilities in accompanying consolidated balance sheets. The operating RoU assets recognized as of January 1, 2019 are net of deferred rent of $58 million and liabilities associated with previously recognized impairments of $34 million. See Note 10 for additional information.
ASU 2017-08: Receivables—Nonrefundable Fees and Other Costs (Subtopic 310-20)
This ASU requires certain premiums on callable debt securities to be amortized to the earliest call date and is intended to better align interest income recognition with the manner in which market participants price these instruments.	On January 1, 2019, the Company adopted the new guidance on accounting for certain premiums on callable debt securities. As the Company’s existing accounting practices aligned with the guidance in the ASU, adoption of the new standard did not have a material impact on the Company’s consolidated financial statements.
ASU 2017-12: Derivatives and Hedging (Topic 815), as clarified and amended byASU 2019-04:Codification Improvements to Topic 326, Financial Instruments—Credit Losses; Topic 815, Derivatives and Hedging; and Topic 825, Financial Instruments
The amendments in these ASUs better align an entity’s risk management activities and financial reporting for hedging relationships through changes to both the designation and measurement guidance for qualifying hedging relationships and the presentation of hedge results.	On January 1, 2019, the Company adopted the new hedging guidance. Adoption of this guidance did not have a material impact on the Company’s consolidated financial statements.

Future Adoption of New Accounting Pronouncements

Description	Effective Date and Method of Adoption	Effect on the Financial Statement or Other Significant Matters
ASU 2016-13: Financial Instruments—Credit Losses (Topic 326), as clarified and amended byASU 2018-19: Codification Improvements to Topic 326, Financial Instruments—Credit Losses, ASU 2019-04: Codification Improvements to Topic 326, Financial Instruments—Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments and ASU 2019-05: Financial Instruments—Credit Losses (Topic 326) Targeted Transition Relief, ASU 2019-11: Codification Improvements to Topic 326, Financial Instruments-Credit Losses
ASU 2016-13 contains new guidance which introduces an approach based on expected losses to estimate credit losses on certain types of financial instruments. It also modifies the impairment model for available-for-sale debt securities and provides for a simplified accounting model for purchased financial assets with credit deterioration since their origination. ASU 2019-05 provides entities that have instruments within the scope of Subtopic 326-20 an option to irrevocably elect the fair value option on an instrument-by instrument basis upon adoption of Topic 326. ASU 2018-19, ASU 2019-04 and ASU 2019-11, clarified the codification guidance and did not materially change the standard.	Effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. These amendments should be applied through a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective.	The Company will implement its updated expected credit loss models, processes and controls related to the identified financial assets that fall within the scope of the new standard as of the date of adoption, January 1, 2020. Management currently anticipates that the standard will have the most impact to its commercial and agricultural mortgage loan portfolios. Based on current economic conditions, the structure and size of the Company’s loan portfolio and other assets impacted by the standard as of December 31, 2019, the Company expects application of the current expected credit loss requirements will result in an immaterial reduction to retained earnings as of the date of adoption.

Description	Effective Date and Method of Adoption	Effect on the Financial Statement or Other Significant Matters
ASU 2018-12:Financial Services - Insurance (Topic 944); ASU 2019-09: Financial Services - Insurance (Topic 944): Effective Date
This ASU provides targeted improvements to existing recognition, measurement, presentation, and disclosure requirements for long-duration contracts issued by an insurance entity. The ASU primarily impacts four key areas, including: Measurement of the liability for future policy benefits for traditional and limited payment contracts. The ASU requires companies to review, and if necessary, update, cash flow assumptions at least annually for non-participating traditional and limited-payment insurance contracts. Interest rates used to discount the liability will need to be updated quarterly using an upper medium grade (low credit risk) fixed-income instrument yield. Measurement of market risk benefits (“MRBs”). MRBs, as defined under the ASU, will encompass certain GMxB features associated with variable annuity products and other general account annuities with other than nominal market risk. The ASU requires MRBs to be measured at fair value with changes in value attributable to changes in instrument-specific credit risk recognized in OCI. Amortization of deferred policy acquisition costs. The ASU simplifies the amortization of deferred policy acquisition costs and other balances amortized in proportion to premiums, gross profits, or gross margins, requiring such balances to be amortized on a constant level basis over the expected term of the contracts.  Deferred costs will be required to be written off for unexpected contract terminations but will not be subject to impairment testing. Expanded footnote disclosures. The ASU requires additional disclosures including disaggregated rollforwards of beginning to ending balances of the liability for future policy benefits, policyholder account balances, MRBs, Separate Account liabilities and deferred policy acquisition costs. Companies will also be required to disclose information about significant inputs, judgements, assumptions and methods used in measurement.	In November 2019, ASU 2019-09 was issued which modified ASU 2018-12 to be effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2021. Early adoption is permitted. For the liability for future policyholder benefits for traditional and limited payment contracts, companies can elect one of two adoption methods. Companies can either elect a modified retrospective transition method applied to contracts in force as of the beginning of the earliest period presented on the basis of their existing carrying amounts, adjusted for the removal of any related amounts in AOCI or a full retrospective transition method using actual historical experience information as of contract inception. The same adoption method must be used for deferred policy acquisition costs. For MRBs, the ASU should be applied retrospectively as of the beginning of the earliest period presented. For deferred policy acquisition costs, companies can elect one of two adoption methods. Companies can either elect a modified retrospective transition method applied to contracts in force as of the beginning of the earliest period presented on the basis of their existing carrying amounts, adjusted for the removal of any related amounts in AOCI or a full retrospective transition method using actual historical experience information as of contract inception. The same adoption method must be used for the liability for future policyholder benefits for traditional and limited payment contracts.	The Company is currently evaluating the impact that adoption of this guidance will have on the Company’s consolidated financial statements, however the adoption of the ASU is expected to have a significant impact on the Company’s consolidated financial condition, results of operations, cash flows and required disclosures, as well as processes and controls.

Description	Effective Date and Method of Adoption	Effect on the Financial Statement or Other Significant Matters
ASU 2018-13: Fair Value Measurement (Topic 820)
This ASU improves the effectiveness of fair value disclosures in the notes to financial statements. Amendments in this ASU modify disclosure requirements in Topic 820, including the removal, modification and addition to existing disclosure requirements.	Effective for fiscal years beginning after December 15, 2019. Early adoption is permitted, with the option to early adopt amendments to remove or modify disclosures, with full adoption of additional disclosure requirements delayed until the stated effective date. Amendments on changes in unrealized gains and losses, the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements, and the narrative description of measurement uncertainty should be applied prospectively. All other amendments should be applied retrospectively.	The Company elected to early adopt during 2019 the removed disclosures relating to transfers between Level 1 and Level 2 of the fair value hierarchy, the policy for timing of transfers between levels and valuation processes for Level 3 fair value measurements. The Company will delay adoption of the additional disclosures until their effective date on January 1, 2020.
ASU 2018-17:Consolidation (Topic 810): Targeted Improvements to Related Party Guidance for Variable Interest Entities
This ASU provides guidance requiring that indirect interests held through related parties in common control arrangements be considered on a proportional basis for determining whether fees paid to decision makers and service providers are variable interests.	Effective for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years. Early adoption is permitted. All entities are required to apply the amendments in this update retrospectively with a cumulative-effect adjustment to retained earnings at the beginning of the earliest period presented.	The Company will adopt this new standard effective for January 1, 2020. Management does not expect the adoption of this standard to materially impact the Company’s financial position or results of operations.
ASU 2019-12: Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes
This ASU simplifies the accounting for income taxes by removing certain exceptions to the general principles in Topic 740, as well as clarifying and amending existing guidance.	Effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2020. Early adoption is permitted.	The Company is currently evaluating the impact adopting the guidance will have on the company’s consolidated financial statements, however the adoption is not expected to materially impact the Company’s financial position, results of operations, or cash flows.