SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Impact from Adoption on Balance Sheet (Details) - USD ($) $ in Millions		Sep. 30, 2022		Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Jan. 01, 2021	Dec. 31, 2020
Investments and Cash:
Available for sale, fixed maturity securities		$ 73,643				$ 98,696
Held to maturity, fixed maturity securities		17,466	[1]			22,000
Equity securities		1,064				1,603
Commercial mortgage and other loans		13,459				11,786
Other investments		4,186				3,842
Cash and cash equivalents		4,710				5,051
Total investments and cash		114,528				142,978
Receivables		655				693
Accrued investment income		684				737
Deferred policy acquisition costs		8,155				9,525
Property and equipment, at cost less accumulated depreciation		488				538
Other		3,590				3,071
Total assets		128,100				157,542
Policy Liabilities:
Future policy benefits		74,629				90,588
Unpaid policy claims		4,516				4,836
Unearned premiums		1,763				2,576
Other policyholders’ funds		5,632				7,072
Total policy liabilities		86,540				105,072
Income taxes		1,888				4,339
Payables for return of cash collateral on loaned securities		2,721				2,162
Notes payable and lease obligations		7,518				7,956
Other		5,281				4,760
Liabilities		103,948				124,289
Commitments and contingent liabilities
Shareholders’ equity:
Common stock		135				135
Additional paid-in capital		2,615				2,529
Retained earnings		44,892				41,381
Accumulated other comprehensive income (loss):
Unrealized foreign currency translation gains (losses)		(4,455)				(2,013)
Unrealized gains (losses) on fixed maturity securities		1,131				9,602
Unrealized gains (losses) on derivatives		(29)				(30)
Pension liability adjustment		(158)				(166)
Treasury stock, at average cost		(19,979)				(18,185)
Total shareholders’ equity		24,152		$ 26,387	$ 29,527	33,253	$ 33,552	$ 33,735	$ 32,103		$ 33,559
Total liabilities and shareholders’ equity		128,100				157,542
Accounting Standards Update 2018-12 | Pro Forma
Investments and Cash:
Held to maturity, fixed maturity securities						22,000
Equity securities						1,603
Commercial mortgage and other loans						11,786
Cash and cash equivalents						5,051
Total investments and cash						142,978
Receivables	[2]					703
Deferred policy acquisition costs	[3]					9,848
Property and equipment, at cost less accumulated depreciation						538
Other	[4]					3,346
Total assets						158,150
Policy Liabilities:
Future policy benefits	[2],[5],[6],[7]					115,964
Unpaid policy claims	[6],[8]					151
Unearned premiums						2,576
Other policyholders’ funds	[8]					7,640
Total policy liabilities						126,331
Income taxes	[9]					30
Payables for return of cash collateral on loaned securities						2,162
Other	[5]					4,640
Liabilities						141,119
Commitments and contingent liabilities
Shareholders’ equity:
Common stock						135
Additional paid-in capital						2,529
Retained earnings	[10]					40,963
Accumulated other comprehensive income (loss):
Unrealized foreign currency translation gains (losses)	[11]					(1,985)
Unrealized gains (losses) on fixed maturity securities						9,602
Unrealized gains (losses) on derivatives						(30)
Effect of changes in discount rate assumptions	[12]					(15,832)
Pension liability adjustment						(166)
Treasury stock, at average cost						(18,185)
Total shareholders’ equity						17,031
Total liabilities and shareholders’ equity						158,150
Accounting Standards Update 2018-12 | Pro Forma | Cumulative Effect, Period of Adoption, Adjustment
Shareholders’ equity:
Retained earnings										$ (300)
Accounting Standards Update 2018-12 | As Previously Reported | Pro Forma
Investments and Cash:
Held to maturity, fixed maturity securities						22,000
Equity securities						1,603
Commercial mortgage and other loans						11,786
Other investments						3,842
Cash and cash equivalents						5,051
Total investments and cash						142,978
Receivables	[2]					693
Accrued investment income						737
Deferred policy acquisition costs	[3]					9,525
Property and equipment, at cost less accumulated depreciation						538
Other	[4]					3,071
Total assets						157,542
Policy Liabilities:
Future policy benefits	[2],[5],[6],[7]					90,588
Unpaid policy claims	[6],[8]					4,836
Unearned premiums						2,576
Other policyholders’ funds	[8]					7,072
Total policy liabilities						105,072
Income taxes	[9]					4,339
Payables for return of cash collateral on loaned securities						2,162
Notes payable and lease obligations						7,956
Other	[5]					4,760
Liabilities						124,289
Commitments and contingent liabilities
Shareholders’ equity:
Common stock						135
Additional paid-in capital						2,529
Retained earnings	[10]					41,381
Accumulated other comprehensive income (loss):
Unrealized foreign currency translation gains (losses)	[11]					(2,013)
Unrealized gains (losses) on fixed maturity securities						9,602
Unrealized gains (losses) on derivatives						(30)
Effect of changes in discount rate assumptions	[12]					0
Pension liability adjustment						(166)
Treasury stock, at average cost						(18,185)
Total shareholders’ equity						33,253
Total liabilities and shareholders’ equity						157,542
Accounting Standards Update 2018-12 | Transition Adjustments | Pro Forma
Investments and Cash:
Held to maturity, fixed maturity securities						0
Equity securities						0
Commercial mortgage and other loans						0
Other investments						0
Cash and cash equivalents						0
Total investments and cash						0
Receivables	[2]					10
Accrued investment income						0
Deferred policy acquisition costs	[3]					323
Property and equipment, at cost less accumulated depreciation						0
Other	[4]					275
Total assets						608
Policy Liabilities:
Future policy benefits	[2],[5],[6],[7]					25,376
Unpaid policy claims	[6],[8]					(4,685)
Unearned premiums						0
Other policyholders’ funds	[8]					568
Total policy liabilities						21,259
Income taxes	[9]					(4,309)
Payables for return of cash collateral on loaned securities						0
Notes payable and lease obligations						0
Other	[5]					(120)
Liabilities						16,830
Commitments and contingent liabilities
Shareholders’ equity:
Common stock						0
Additional paid-in capital						0
Retained earnings	[10]					(418)
Accumulated other comprehensive income (loss):
Unrealized foreign currency translation gains (losses)	[11]					28
Unrealized gains (losses) on fixed maturity securities						0
Unrealized gains (losses) on derivatives						0
Effect of changes in discount rate assumptions	[12]					(15,832)
Pension liability adjustment						0
Treasury stock, at average cost						0
Total shareholders’ equity						(16,222)
Total liabilities and shareholders’ equity						608
Accounting Standards Update 2018-12 | Transition Adjustments | Pro Forma | Cumulative Effect, Period of Adoption, Adjustment
Shareholders’ equity:
Retained earnings										(324)
Accumulated other comprehensive income (loss):
Effect of changes in discount rate assumptions										$ (18,570)
Consolidated Entity, Excluding VIE | Accounting Standards Update 2018-12 | Pro Forma
Investments and Cash:
Available for sale, fixed maturity securities						94,206
Consolidated Entity, Excluding VIE | Accounting Standards Update 2018-12 | As Previously Reported | Pro Forma
Investments and Cash:
Available for sale, fixed maturity securities						94,206
Consolidated Entity, Excluding VIE | Accounting Standards Update 2018-12 | Transition Adjustments | Pro Forma
Investments and Cash:
Available for sale, fixed maturity securities						0
Variable Interest Entity, Consolidated
Investments and Cash:
Available for sale, fixed maturity securities		3,617				4,490
Commercial mortgage and other loans	[13]	10,775				9,740
Other investments	[13],[14]	1,815				1,535
Policy Liabilities:
Liabilities	[13]	$ 463				414
Variable Interest Entity, Consolidated | Accounting Standards Update 2018-12 | Pro Forma
Investments and Cash:
Available for sale, fixed maturity securities						4,490
Variable Interest Entity, Consolidated | Accounting Standards Update 2018-12 | As Previously Reported | Pro Forma
Investments and Cash:
Available for sale, fixed maturity securities						4,490
Variable Interest Entity, Consolidated | Accounting Standards Update 2018-12 | Transition Adjustments | Pro Forma
Investments and Cash:
Available for sale, fixed maturity securities						$ 0

[1] Net of allowance for credit losses

[2] Adjustment for the reclassification of ceded reserves from future policy benefits to receivables in conjunction with adoption of the updated standard.

[3] Adjustment reflects an increase in DAC assets as a result of DAC being amortized over the expected life of a contract and no interest accretion recorded under the updated standard.

[4] Adjustment reflects the discounting of reinsurance recoverables for retrocession activities under the updated standard.

[5] Adjustment for the reclassification of accrued claim adjustment expenses from other liabilities to future policy benefits as a component of the integrated reserve.

[6] Adjustment for the reclassification of unpaid policy claims for long-duration contracts to future policy benefits as a component of the integrated reserve.

[7] Adjustment reflects the impacts of adoption and 2021 activity under the updated standard, including a $490 increase in the deferred profit liability on limited-payment products under the updated standard as discussed above.

[8] Adjustment for the reclassification of the claims liability for certain fixed annuity benefits from unpaid policy claims to other policyholders' funds.

[9] Adjustment reflects the tax effects from adoption and 2021 activity under the updated standard.

[10] Adjustment reflects the impacts from adoption of ($324) as a result of capping the net premium ratio at 100% for cohorts that are in a loss position at transition, and the decrease in current year net earnings of $(94) under the updated standard.

[11] Adjustment reflects foreign currency translation related to the updated standard, as applicable.

[12] Adjustment reflects the impacts from adoption of ($18,570) and 2021 activity of $2,738 due to changes in the discount rate assumptions under the updated standard.

[13] Net of allowance for credit losses

[14] Consists entirely of alternative investments in limited partnerships