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Reserve for Unpaid Losses and Loss Adjustment Expenses - Historical Loss Development Triangles, P&C (Details) claim in Millions, $ in Millions	Dec. 31, 2023 USD ($) claim	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Workers’ compensation | Segment Reconciling Items
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 18,050
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	9,482
Workers’ compensation | 2014
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	1,615	$ 1,637	$ 1,654	$ 1,679	$ 1,692	$ 1,713	$ 1,761	$ 1,789	$ 1,838	$ 1,869
IBNR Reserves	$ 327
Claims Reported | claim	126,753
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 1,207	1,191	1,167	1,137	1,099	1,041	960	811	598	275
Workers’ compensation | 2015
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	1,625	1,645	1,667	1,699	1,714	1,724	1,801	1,835	1,873
IBNR Reserves	$ 344
Claims Reported | claim	114,644
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 1,179	1,151	1,117	1,068	1,004	909	778	576	261
Workers’ compensation | 2016
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	1,634	1,670	1,708	1,748	1,767	1,780	1,772	1,772
IBNR Reserves	$ 375
Claims Reported | claim	112,675
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 1,145	1,110	1,064	1,003	908	779	579	255
Workers’ compensation | 2017
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	1,635	1,665	1,757	1,822	1,840	1,869	1,862
IBNR Reserves	$ 442
Claims Reported | claim	112,215
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 1,087	1,035	977	900	778	575	261
Workers’ compensation | 2018
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	1,836	1,870	1,904	1,915	1,917	1,916
IBNR Reserves	$ 524
Claims Reported | claim	119,524
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 1,170	1,090	983	837	624	283
Workers’ compensation | 2019
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	1,899	1,934	1,934	1,935	1,937
IBNR Reserves	$ 606
Claims Reported | claim	120,486
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 1,129	1,007	856	637	291
Workers’ compensation | 2020
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	1,808	1,849	1,864	1,865
IBNR Reserves	$ 766
Claims Reported | claim	91,762
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 850	695	507	223
Workers’ compensation | Short-Duration Insurance Contract, Accident Year 2021 [Member]
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	1,831	1,832	1,831
IBNR Reserves	$ 791
Claims Reported | claim	102,180
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 780	562	254
Workers’ compensation | Short-Duration Insurance Contract, Accident Year 2022
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	2,001	2,000
IBNR Reserves	$ 1,049
Claims Reported | claim	112,597
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 649	293
Workers’ compensation | Short-Duration Insurance Contract, Accident Year 2023
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	2,166
IBNR Reserves	$ 1,575
Claims Reported | claim	108,987
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 286
General liability | Segment Reconciling Items
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	8,271
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	3,772
General liability | 2014
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	506	510	505	515	522	513	494	481	475	506
IBNR Reserves	$ 33
Claims Reported | claim	16,609
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 456	437	423	402	358	304	214	130	42	15
General liability | 2015
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	641	647	637	647	633	594	554	560	556
IBNR Reserves	$ 51
Claims Reported | claim	16,786
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 564	547	524	477	409	278	156	55	10
General liability | 2016
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	670	636	620	632	632	607	583	613
IBNR Reserves	$ 65
Claims Reported | claim	17,833
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 564	513	446	368	283	131	52	12
General liability | 2017
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	658	615	613	615	613	614	626
IBNR Reserves	$ 92
Claims Reported | claim	17,377
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 506	441	344	255	156	67	15
General liability | 2018
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	751	728	703	697	669	692
IBNR Reserves	$ 158
Claims Reported | claim	18,783
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 512	409	288	177	83	21
General liability | 2019
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	859	839	821	826	822
IBNR Reserves	$ 259
Claims Reported | claim	18,432
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 501	339	192	100	29
General liability | 2020
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	874	923	923	938
IBNR Reserves	$ 496
Claims Reported | claim	14,006
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 308	202	110	45
General liability | Short-Duration Insurance Contract, Accident Year 2021 [Member]
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	983	991	1,002
IBNR Reserves	$ 676
Claims Reported | claim	11,943
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 209	115	34
General liability | Short-Duration Insurance Contract, Accident Year 2022
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	1,110	1,116
IBNR Reserves	$ 873
Claims Reported | claim	11,167
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 135	26
General liability | Short-Duration Insurance Contract, Accident Year 2023
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	1,219
IBNR Reserves	$ 1,173
Claims Reported | claim	7,835
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 17
Marine [Member] | Segment Reconciling Items
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	1,452
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	1,182
Marine [Member] | 2014
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	168	172	173	169	170	165	166	159	161	164
IBNR Reserves	$ (1)
Claims Reported | claim	7,500
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 166	165	162	160	157	152	132	117	81	41
Marine [Member] | 2015
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	141	144	141	139	134	149	147	147	159
IBNR Reserves	$ 0
Claims Reported | claim	10,374
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 143	143	141	140	134	126	117	86	40
Marine [Member] | 2016
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	160	150	148	150	149	139	144	140
IBNR Reserves	$ (6)
Claims Reported | claim	13,616
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 147	144	141	132	123	106	81	36
Marine [Member] | 2017
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	176	169	166	160	161	174	154
IBNR Reserves	$ (3)
Claims Reported | claim	16,101
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 171	162	151	143	134	107	47
Marine [Member] | 2018
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	157	153	147	141	147	131
IBNR Reserves	$ (15)
Claims Reported | claim	10,678
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 159	142	135	126	95	33
Marine [Member] | 2019
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	127	129	134	136	139
IBNR Reserves	$ (1)
Claims Reported | claim	7,085
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 115	106	96	80	34
Marine [Member] | 2020
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	138	134	138	145
IBNR Reserves	$ 6
Claims Reported | claim	5,108
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 99	90	68	32
Marine [Member] | Short-Duration Insurance Contract, Accident Year 2021 [Member]
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	119	128	127
IBNR Reserves	$ 29
Claims Reported | claim	5,161
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 87	63	25
Marine [Member] | Short-Duration Insurance Contract, Accident Year 2022
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	132	140
IBNR Reserves	$ 38
Claims Reported | claim	4,855
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 72	27
Marine [Member] | Short-Duration Insurance Contract, Accident Year 2023
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	134
IBNR Reserves	$ 85
Claims Reported | claim	3,297
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 23
Package business | Segment Reconciling Items
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	7,856
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	5,797
Package business | 2014
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	577	576	581	593	603	603	602	601	578	566
IBNR Reserves	$ 18
Claims Reported | claim	43,611
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 551	545	542	535	525	507	468	416	345	226
Package business | 2015
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	564	564	567	581	588	583	585	588	582
IBNR Reserves	$ 15
Claims Reported | claim	42,415
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 542	530	513	505	486	445	383	332	212
Package business | 2016
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	590	591	595	611	625	632	638	655
IBNR Reserves	$ 33
Claims Reported | claim	44,318
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 545	540	521	500	465	410	353	225
Package business | 2017
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	640	637	644	657	692	702	695
IBNR Reserves	$ 43
Claims Reported | claim	46,880
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 578	561	534	496	447	372	235
Package business | 2018
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	654	655	667	688	724	719
IBNR Reserves	$ 60
Claims Reported | claim	45,254
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 571	537	498	451	402	237
Package business | 2019
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	747	744	749	769	813
IBNR Reserves	$ 81
Claims Reported | claim	43,820
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 626	571	488	413	254
Package business | 2020
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	837	877	893	915
IBNR Reserves	$ 147
Claims Reported | claim	62,738
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 648	573	493	326
Package business | Short-Duration Insurance Contract, Accident Year 2021 [Member]
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	958	954	946
IBNR Reserves	$ 235
Claims Reported | claim	47,187
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 650	556	368
Package business | Short-Duration Insurance Contract, Accident Year 2022
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	1,039	1,038
IBNR Reserves	$ 317
Claims Reported | claim	45,649
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 633	319
Package business | Short-Duration Insurance Contract, Accident Year 2023
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	1,250
IBNR Reserves	$ 570
Claims Reported | claim	40,286
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 453
Property | P&C Commercial Lines | Segment Reconciling Items
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	4,068
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	3,568
Property | P&C Commercial Lines | 2014
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	279	279	279	280	280	280	280	282	281	293
IBNR Reserves	$ (1)
Claims Reported | claim	21,124
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 280	280	280	280	279	279	279	270	250	170
Property | P&C Commercial Lines | 2015
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	301	302	302	304	306	302	302	301	299
IBNR Reserves	$ 1
Claims Reported | claim	21,149
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 302	302	302	303	302	296	285	257	179
Property | P&C Commercial Lines | 2016
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	406	406	409	409	407	400	420	406
IBNR Reserves	$ (1)
Claims Reported | claim	24,099
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 408	407	407	402	396	379	343	215
Property | P&C Commercial Lines | 2017
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	440	438	441	439	456	516	578
IBNR Reserves	$ 3
Claims Reported | claim	24,727
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 440	439	433	427	412	378	229
Property | P&C Commercial Lines | 2018
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	393	400	403	424	436	450
IBNR Reserves	$ (3)
Claims Reported | claim	21,916
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 394	394	385	378	344	188
Property | P&C Commercial Lines | 2019
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	421	420	418	439	480
IBNR Reserves	$ 0
Claims Reported | claim	21,105
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 407	405	383	351	215
Property | P&C Commercial Lines | 2020
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	437	439	469	501
IBNR Reserves	$ 54
Claims Reported | claim	20,573
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 366	355	336	221
Property | P&C Commercial Lines | Short-Duration Insurance Contract, Accident Year 2021 [Member]
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	463	500	530
IBNR Reserves	$ 45
Claims Reported | claim	18,285
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 403	382	241
Property | P&C Commercial Lines | Short-Duration Insurance Contract, Accident Year 2022
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	480	497
IBNR Reserves	$ 71
Claims Reported | claim	17,350
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 369	180
Property | P&C Commercial Lines | Short-Duration Insurance Contract, Accident Year 2023
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	448
IBNR Reserves	$ 140
Claims Reported | claim	15,390
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 199
Automobile liability | P&C Commercial Lines | Segment Reconciling Items
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	4,243
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	2,945
Automobile liability | P&C Commercial Lines | 2014
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	332	332	332	333	334	341	337	331	317	309
IBNR Reserves	$ 4
Claims Reported | claim	30,171
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 328	325	320	318	309	299	252	197	131	59
Automobile liability | P&C Commercial Lines | 2015
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	360	358	360	359	356	356	372	358	308
IBNR Reserves	$ 6
Claims Reported | claim	28,745
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 350	348	344	335	314	267	207	142	62
Automobile liability | P&C Commercial Lines | 2016
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	396	395	395	391	391	390	393	385
IBNR Reserves	$ 7
Claims Reported | claim	29,260
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 385	379	357	339	303	232	147	65
Automobile liability | P&C Commercial Lines | 2017
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	398	394	381	383	379	383	372
IBNR Reserves	$ 2
Claims Reported | claim	26,411
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 386	368	328	285	211	134	60
Automobile liability | P&C Commercial Lines | 2018
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	433	424	406	405	396	349
IBNR Reserves	$ 21
Claims Reported | claim	24,799
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 387	360	305	238	153	62
Automobile liability | P&C Commercial Lines | 2019
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	471	460	450	439	425
IBNR Reserves	$ 30
Claims Reported | claim	28,573
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 393	327	247	160	67
Automobile liability | P&C Commercial Lines | 2020
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	397	419	424	428
IBNR Reserves	$ 79
Claims Reported | claim	22,194
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 264	200	119	55
Automobile liability | P&C Commercial Lines | Short-Duration Insurance Contract, Accident Year 2021 [Member]
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	429	443	440
IBNR Reserves	$ 157
Claims Reported | claim	19,999
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 212	127	55
Automobile liability | P&C Commercial Lines | Short-Duration Insurance Contract, Accident Year 2022
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	500	468
IBNR Reserves	$ 238
Claims Reported | claim	20,384
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 171	64
Automobile liability | P&C Commercial Lines | Short-Duration Insurance Contract, Accident Year 2023
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	527
IBNR Reserves	$ 403
Claims Reported | claim	18,107
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 69
Automobile liability | P&C Personal Lines | Segment Reconciling Items
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	10,874
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	9,393
Automobile liability | P&C Personal Lines | 2014
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	1,199	1,199	1,199	1,201	1,202	1,199	1,200	1,198	1,153	1,146
IBNR Reserves	$ 5
Claims Reported | claim	209,028
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 1,193	1,192	1,190	1,186	1,182	1,165	1,125	1,032	843	430
Automobile liability | P&C Personal Lines | 2015
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	1,319	1,320	1,324	1,328	1,331	1,330	1,338	1,340	1,195
IBNR Reserves	$ 3
Claims Reported | claim	216,908
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 1,314	1,313	1,310	1,304	1,292	1,243	1,142	935	475
Automobile liability | P&C Personal Lines | 2016
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	1,384	1,384	1,386	1,395	1,397	1,393	1,402	1,407
IBNR Reserves	$ 3
Claims Reported | claim	215,868
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 1,377	1,373	1,363	1,345	1,308	1,188	968	505
Automobile liability | P&C Personal Lines | 2017
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	1,197	1,198	1,200	1,214	1,228	1,275	1,277
IBNR Reserves	$ 6
Claims Reported | claim	187,557
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 1,187	1,180	1,161	1,123	1,033	836	441
Automobile liability | P&C Personal Lines | 2018
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	1,055	1,056	1,058	1,072	1,104	1,108
IBNR Reserves	$ 22
Claims Reported | claim	156,286
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 1,028	1,011	965	888	710	359
Automobile liability | P&C Personal Lines | 2019
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	971	986	991	1,010	1,018
IBNR Reserves	$ 21
Claims Reported | claim	139,723
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 933	897	816	654	323
Automobile liability | P&C Personal Lines | 2020
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	741	775	782	805
IBNR Reserves	$ 37
Claims Reported | claim	96,668
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 679	615	486	238
Automobile liability | P&C Personal Lines | Short-Duration Insurance Contract, Accident Year 2021 [Member]
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	852	886	881
IBNR Reserves	$ 101
Claims Reported | claim	101,842
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 691	553	247
Automobile liability | P&C Personal Lines | Short-Duration Insurance Contract, Accident Year 2022
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	1,018	928
IBNR Reserves	$ 235
Claims Reported | claim	106,927
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 662	301
Automobile liability | P&C Personal Lines | Short-Duration Insurance Contract, Accident Year 2023
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	1,138
IBNR Reserves	$ 586
Claims Reported | claim	99,620
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 329
Commercial automobile physical damage | P&C Commercial Lines | Segment Reconciling Items
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	215
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	194
Commercial automobile physical damage | P&C Commercial Lines | Short-Duration Insurance Contract, Accident Year 2021 [Member]
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	61	62	58
IBNR Reserves	$ 1
Claims Reported | claim	15,490
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 61	61	51
Commercial automobile physical damage | P&C Commercial Lines | Short-Duration Insurance Contract, Accident Year 2022
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	74	70
IBNR Reserves	$ 1
Claims Reported | claim	16,713
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 72	59
Commercial automobile physical damage | P&C Commercial Lines | Short-Duration Insurance Contract, Accident Year 2023
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	80
IBNR Reserves	$ 10
Claims Reported | claim	15,610
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 61
Professional liability | Segment Reconciling Items
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	2,846
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	1,511
Professional liability | 2014
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	167	169	174	183	182	179	178	181	183	187
IBNR Reserves	$ 6
Claims Reported | claim	6,751
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 157	151	145	146	135	131	108	74	38	8
Professional liability | 2015
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	198	197	200	207	214	190	180	174	164
IBNR Reserves	$ (3)
Claims Reported | claim	7,266
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 186	175	164	141	125	108	86	41	9
Professional liability | 2016
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	192	194	196	195	197	203	176	183
IBNR Reserves	$ 2
Claims Reported | claim	8,443
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 177	167	148	124	111	88	51	8
Professional liability | 2017
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	217	242	239	226	231	203	205
IBNR Reserves	$ 5
Claims Reported | claim	9,514
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 191	179	149	122	87	48	11
Professional liability | 2018
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	326	267	271	271	275	244
IBNR Reserves	$ 47
Claims Reported | claim	9,863
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 233	195	161	127	72	15
Professional liability | 2019
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	355	347	330	313	295
IBNR Reserves	$ 77
Claims Reported | claim	9,921
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 241	198	148	77	21
Professional liability | 2020
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	325	336	363	369
IBNR Reserves	$ 156
Claims Reported | claim	7,994
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 147	118	71	19
Professional liability | Short-Duration Insurance Contract, Accident Year 2021 [Member]
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	327	343	339
IBNR Reserves	$ 207
Claims Reported | claim	6,698
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 95	55	15
Professional liability | Short-Duration Insurance Contract, Accident Year 2022
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	355	349
IBNR Reserves	$ 265
Claims Reported | claim	7,033
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 64	18
Professional liability | Short-Duration Insurance Contract, Accident Year 2023
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	384
IBNR Reserves	$ 338
Claims Reported | claim	6,725
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 20
Bond | Segment Reconciling Items
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	680
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	284
Bond | 2014
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	62	64	60	60	59	59	67	66	67	71
IBNR Reserves	$ 10
Claims Reported | claim	1,393
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 52	52	47	46	44	43	43	40	31	18
Bond | 2015
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	37	42	47	48	54	60	63	67	67
IBNR Reserves	$ 12
Claims Reported | claim	1,411
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 25	25	30	32	34	31	24	20	9
Bond | 2016
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	34	37	45	51	55	61	61	61
IBNR Reserves	$ 14
Claims Reported | claim	1,344
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 20	22	22	22	20	15	12	2
Bond | 2017
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	68	70	79	94	101	90	63
IBNR Reserves	$ 25
Claims Reported | claim	1,793
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 43	43	42	54	55	46	5
Bond | 2018
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	63	70	71	72	68	68
IBNR Reserves	$ 32
Claims Reported | claim	1,737
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 29	29	24	23	16	6
Bond | 2019
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	71	73	74	73	72
IBNR Reserves	$ 53
Claims Reported | claim	1,890
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 16	16	15	13	3
Bond | 2020
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	83	79	84	83
IBNR Reserves	$ 55
Claims Reported | claim	2,201
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 26	21	12	4
Bond | Short-Duration Insurance Contract, Accident Year 2021 [Member]
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	88	85	85
IBNR Reserves	$ 62
Claims Reported | claim	2,870
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 23	21	8
Bond | Short-Duration Insurance Contract, Accident Year 2022
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	93	85
IBNR Reserves	$ 42
Claims Reported | claim	2,456
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 42	11
Bond | Short-Duration Insurance Contract, Accident Year 2023
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	81
IBNR Reserves	$ 71
Claims Reported | claim	1,414
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 8
Assumed Reinsurance [Member] | Segment Reconciling Items
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	1,798
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	1,242
Assumed Reinsurance [Member] | 2014
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	116	116	115	116	116	115	118	122	142	119
IBNR Reserves	$ (1)
Claims Reported | claim	1,934
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 116	115	115	115	113	112	109	106	119	66
Assumed Reinsurance [Member] | 2015
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	96	96	96	96	95	94	95	92	102
IBNR Reserves	$ (1)
Claims Reported | claim	1,723
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 96	96	95	94	91	83	77	65	42
Assumed Reinsurance [Member] | 2016
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	104	102	102	102	100	98	91	89
IBNR Reserves	$ (2)
Claims Reported | claim	1,975
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 101	99	97	95	90	85	66	36
Assumed Reinsurance [Member] | 2017
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	155	155	153	157	162	153	129
IBNR Reserves	$ (3)
Claims Reported | claim	2,557
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 151	149	147	145	135	116	44
Assumed Reinsurance [Member] | 2018
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	132	136	134	129	127	128
IBNR Reserves	$ (17)
Claims Reported | claim	3,026
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 144	142	139	133	111	25
Assumed Reinsurance [Member] | 2019
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	209	190	186	189	181
IBNR Reserves	$ 22
Claims Reported | claim	3,710
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 176	159	153	132	62
Assumed Reinsurance [Member] | 2020
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	179	187	181	183
IBNR Reserves	$ 29
Claims Reported | claim	3,177
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 133	113	89	50
Assumed Reinsurance [Member] | Short-Duration Insurance Contract, Accident Year 2021 [Member]
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	204	196	192
IBNR Reserves	$ 41
Claims Reported | claim	2,431
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 133	102	46
Assumed Reinsurance [Member] | Short-Duration Insurance Contract, Accident Year 2022
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	274	266
IBNR Reserves	$ 101
Claims Reported | claim	1,971
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 129	60
Assumed Reinsurance [Member] | Short-Duration Insurance Contract, Accident Year 2023
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	329
IBNR Reserves	$ 188
Claims Reported | claim	977
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 63
Personal automobile physical damage | Segment Reconciling Items
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	1,535
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	1,462
Personal automobile physical damage | Short-Duration Insurance Contract, Accident Year 2021 [Member]
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	412	413	412
IBNR Reserves	$ 1
Claims Reported | claim	225,735
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 411	411	388
Personal automobile physical damage | Short-Duration Insurance Contract, Accident Year 2022
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	549	533
IBNR Reserves	$ 10
Claims Reported | claim	239,278
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 538	498
Personal automobile physical damage | Short-Duration Insurance Contract, Accident Year 2023
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	574
IBNR Reserves	$ 27
Claims Reported | claim	222,805
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 513
Homeowners | Segment Reconciling Items
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	6,009
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	5,677
Homeowners | 2014
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	699	698	698	698	698	698	700	702	707	710
IBNR Reserves	$ 0
Claims Reported | claim	121,928
Homeowners | 2015
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 682	684	684	684	684	684	690	703	690
IBNR Reserves	$ 0
Claims Reported | claim	120,017
Homeowners | 2016
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 658	658	658	658	658	663	673	669
IBNR Reserves	$ 0
Claims Reported | claim	119,815
Homeowners | 2017
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 771	774	775	783	884	889	866
IBNR Reserves	$ 5
Claims Reported | claim	124,772
Homeowners | 2018
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 645	639	642	673	910	903
IBNR Reserves	$ 11
Claims Reported | claim	102,905
Homeowners | 2019
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 467	468	470	475	501
IBNR Reserves	$ 4
Claims Reported | claim	84,781
Homeowners | 2020
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 505	513	512	525
IBNR Reserves	$ 12
Claims Reported | claim	88,502
Homeowners | Short-Duration Insurance Contract, Accident Year 2021 [Member]
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 491	501	502
IBNR Reserves	$ 14
Claims Reported | claim	77,212
Homeowners | Short-Duration Insurance Contract, Accident Year 2022
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 507	499
IBNR Reserves	$ 27
Claims Reported | claim	63,841
Homeowners | Short-Duration Insurance Contract, Accident Year 2023
Claims Development [Line Items]
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 584
IBNR Reserves	$ 115
Claims Reported | claim	63,662
Homeowners | P&C Personal Lines | Segment Reconciling Items
Claims Development [Line Items]
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 5,677
Homeowners | P&C Personal Lines | 2014
Claims Development [Line Items]
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	698	698	698	697	697	695	691	684	663	$ 526
Homeowners | P&C Personal Lines | 2015
Claims Development [Line Items]
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	682	682	681	681	680	674	665	645	$ 487
Homeowners | P&C Personal Lines | 2016
Claims Development [Line Items]
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	657	656	655	653	649	640	621	$ 481
Homeowners | P&C Personal Lines | 2017
Claims Development [Line Items]
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	761	762	761	757	795	747	$ 538
Homeowners | P&C Personal Lines | 2018
Claims Development [Line Items]
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	626	627	619	616	712	$ 484
Homeowners | P&C Personal Lines | 2019
Claims Development [Line Items]
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	460	458	445	425	$ 318
Homeowners | P&C Personal Lines | 2020
Claims Development [Line Items]
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	486	478	454	$ 335
Homeowners | P&C Personal Lines | Short-Duration Insurance Contract, Accident Year 2021 [Member]
Claims Development [Line Items]
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	464	440	$ 305
Homeowners | P&C Personal Lines | Short-Duration Insurance Contract, Accident Year 2022
Claims Development [Line Items]
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	453	$ 298
Homeowners | P&C Personal Lines | Short-Duration Insurance Contract, Accident Year 2023
Claims Development [Line Items]
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 390

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