Segment Information (Earnings) (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Revenues
Premiums	$ 11,435	$ 10,810	$ 23,555	$ 22,533
Universal life and investment-type product policy fees	1,372	1,259	2,715	2,488
Net investment income	6,702	5,661	12,057	10,546
Other revenues	845	679	1,697	1,366
Expenses
Policyholder liability remeasurement (gains) losses	18	5	5	(26)
Interest credited to policyholder account balances	3,067	2,400	4,741	4,047
Amortization of DAC, VOBA and negative VOBA	588	528	1,156	1,047
Interest expense on debt	292	269	557	527
Provision for income tax expense (benefit)	256	245	601	649
Adjusted earnings	$ 1,604	$ 1,393	$ 3,235	$ 2,808
Group Benefits
Expenses
Net investment income from equity method investments	(1.00%)	0.00%	0.00%	0.00%
RIS
Expenses
Net investment income from equity method investments	4.00%	4.00%	6.00%	5.00%
Asia
Expenses
Net investment income from equity method investments	12.00%	10.00%	15.00%	10.00%
Latin America
Expenses
Net investment income from equity method investments	1.00%	0.00%	1.00%	0.00%
EMEA
Expenses
Net investment income from equity method investments	1.00%	0.00%	1.00%	0.00%
Operating Segments
Expenses
Adjusted earnings	$ 1,733	$ 1,504	$ 3,496	$ 2,982
Operating Segments \| Group Benefits
Revenues
Premiums	5,819	5,801	11,667	11,564
Universal life and investment-type product policy fees	242	240	472	473
Net investment income	357	345	709	698
Other revenues	451	405	912	839
Expenses
Policyholder benefits and claims and policyholder dividends	5,053	5,161	10,200	10,344
Policyholder liability remeasurement (gains) losses	(2)	(4)	(4)	(22)
Interest credited to policyholder account balances	69	73	139	145
Amortization of DAC, VOBA and negative VOBA	8	7	20	13
Interest expense on debt	2	1	3	2
Direct and Allocated Expenses	529	507	1,069	1,036
Other segment expenses	574	538	1,142	1,080
Provision for income tax expense (benefit)	133	107	249	205
Adjusted earnings	503	401	942	771
Operating Segments \| RIS
Revenues
Premiums	1,587	1,210	3,799	3,494
Universal life and investment-type product policy fees	113	102	222	206
Net investment income	2,219	2,166	4,471	4,356
Other revenues	69	70	138	139
Expenses
Policyholder benefits and claims and policyholder dividends	2,466	2,045	5,532	5,165
Policyholder liability remeasurement (gains) losses	3	1	(17)	(14)
Interest credited to policyholder account balances	908	903	1,791	1,786
Amortization of DAC, VOBA and negative VOBA	24	21	47	40
Interest expense on debt	2	4	5	7
Direct and Allocated Expenses	86	89	179	187
Other segment expenses	36	25	72	59
Provision for income tax expense (benefit)	86	90	193	189
Adjusted earnings	377	370	828	776
Operating Segments \| Asia
Revenues
Premiums	1,237	1,278	2,531	2,538
Universal life and investment-type product policy fees	441	399	868	805
Net investment income	1,375	1,204	2,836	2,408
Other revenues	20	22	37	37
Expenses
Policyholder benefits and claims and policyholder dividends	1,030	1,051	2,118	2,088
Policyholder liability remeasurement (gains) losses	(15)	(12)	(30)	(23)
Interest credited to policyholder account balances	862	757	1,695	1,468
Amortization of DAC, VOBA and negative VOBA	214	223	425	439
Interest expense on debt	0	0	0	0
Direct and Allocated Expenses	299	304	597	610
Other segment expenses	93	91	188	183
Provision for income tax expense (benefit)	170	143	372	305
Adjusted earnings	420	346	907	718
Operating Segments \| Latin America
Revenues
Premiums	1,498	1,260	2,983	2,424
Universal life and investment-type product policy fees	416	371	835	711
Net investment income	587	445	996	853
Other revenues	(15)	3	(22)	12
Expenses
Policyholder benefits and claims and policyholder dividends	1,471	1,216	2,820	2,307
Policyholder liability remeasurement (gains) losses	5	0	5	(3)
Interest credited to policyholder account balances	101	96	186	194
Amortization of DAC, VOBA and negative VOBA	186	137	359	266
Interest expense on debt	4	4	9	8
Direct and Allocated Expenses	171	143	329	278
Other segment expenses	197	166	403	342
Provision for income tax expense (benefit)	83	84	184	156
Adjusted earnings	268	233	497	452
Operating Segments \| EMEA
Revenues
Premiums	698	626	1,387	1,208
Universal life and investment-type product policy fees	98	84	197	162
Net investment income	67	61	134	119
Other revenues	10	9	19	17
Expenses
Policyholder benefits and claims and policyholder dividends	335	309	672	586
Policyholder liability remeasurement (gains) losses	(5)	4	(2)	4
Interest credited to policyholder account balances	21	20	42	37
Amortization of DAC, VOBA and negative VOBA	110	88	207	182
Interest expense on debt	0	0	0	0
Direct and Allocated Expenses	120	111	242	220
Other segment expenses	159	120	300	240
Provision for income tax expense (benefit)	25	28	58	54
Adjusted earnings	108	100	218	183
Operating Segments \| MIM
Revenues
Premiums	0	0	0	0
Universal life and investment-type product policy fees	0	0	0	0
Net investment income	2	2	7	3
Other revenues	317	237	631	455
Expenses
Policyholder benefits and claims and policyholder dividends	0	0	0	0
Policyholder liability remeasurement (gains) losses	0	0	0	0
Interest credited to policyholder account balances	0	0	0	0
Amortization of DAC, VOBA and negative VOBA	0	0	0	0
Interest expense on debt	1	0	2	0
Direct and Allocated Expenses	227	158	469	331
Other segment expenses	15	9	28	18
Provision for income tax expense (benefit)	19	18	35	27
Adjusted earnings	$ 57	$ 54	$ 104	$ 82

Amount of amortization expense (reversal of expense) for deferred policy acquisition costs and present value of future profits from insurance contract acquired in business combination. Negative value of business acquired is amortized over the policy period reflecting the expected pattern of losses included in the liability. Such amortization is recorded in other expenses.

No definition available.