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Short Duration Contracts - Claims development - Insurance (Details) $ in Millions | Dec. 31, 2025 USD ($) claims | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($)
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Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses, net of reinsurance | $ 23,906 |  |  |  |  |  |  |  |  |
Insurance | Property, energy, marine and aviation |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | 3,855 |  |  |  |  |  |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 2,894 |  |  |  |  |  |  |  |  |
All outstanding liabilities before 2016, net of reinsurance | 14 |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses, net of reinsurance | 975 |  |  |  |  |  |  |  |  |
Insurance | Property, energy, marine and aviation | 2016 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | 86 | $ 86 | $ 87 | $ 87 | $ 92 | $ 96 | $ 100 | $ 105 | $ 101 | $ 104
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 86 | 86 | 87 | 87 | 91 | 94 | 97 | 98 | 83 | 25
Total of IBNR liabilities plus expected development on reported claims | $ 0 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 6,189 |  |  |  |  |  |  |  |  |
Insurance | Property, energy, marine and aviation | 2017 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 225 | 224 | 225 | 225 | 231 | 230 | 236 | 246 | 281 |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 223 | 221 | 220 | 218 | 216 | 212 | 195 | 140 | 30 |
Total of IBNR liabilities plus expected development on reported claims | $ 0 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 6,512 |  |  |  |  |  |  |  |  |
Insurance | Property, energy, marine and aviation | 2018 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 171 | 170 | 172 | 170 | 170 | 174 | 186 | 181 |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 162 | 157 | 154 | 150 | 143 | 135 | 102 | 30 |  |
Total of IBNR liabilities plus expected development on reported claims | $ 0 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 5,091 |  |  |  |  |  |  |  |  |
Insurance | Property, energy, marine and aviation | 2019 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 156 | 156 | 159 | 161 | 165 | 179 | 179 |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 155 | 153 | 148 | 139 | 134 | 105 | 26 |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ (2) |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 7,518 |  |  |  |  |  |  |  |  |
Insurance | Property, energy, marine and aviation | 2020 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 335 | 337 | 333 | 336 | 329 | 359 |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 317 | 306 | 293 | 251 | 194 | 56 |  |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 1 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 8,558 |  |  |  |  |  |  |  |  |
Insurance | Property, energy, marine and aviation | 2021 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 420 | 421 | 423 | 429 | 427 |  |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 396 | 365 | 343 | 268 | 90 |  |  |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 12 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 10,380 |  |  |  |  |  |  |  |  |
Insurance | Property, energy, marine and aviation | 2022 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 679 | 576 | 495 | 522 |  |  |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 547 | 337 | 276 | 100 |  |  |  |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 91 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 16,853 |  |  |  |  |  |  |  |  |
Insurance | Property, energy, marine and aviation | 2023 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 483 | 510 | 571 |  |  |  |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 378 | 271 | 146 |  |  |  |  |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 48 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 22,016 |  |  |  |  |  |  |  |  |
Insurance | Property, energy, marine and aviation | 2024 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 607 | 703 |  |  |  |  |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 363 | 195 |  |  |  |  |  |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 142 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 25,054 |  |  |  |  |  |  |  |  |
Insurance | Property, energy, marine and aviation | 2025 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 693 |  |  |  |  |  |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 267 |  |  |  |  |  |  |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 327 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 21,693 |  |  |  |  |  |  |  |  |
Insurance | Third party occurrence business |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 6,749 |  |  |  |  |  |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 2,670 |  |  |  |  |  |  |  |  |
All outstanding liabilities before 2016, net of reinsurance | 375 |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses, net of reinsurance | 4,454 |  |  |  |  |  |  |  |  |
Insurance | Third party occurrence business | 2016 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | 331 | 345 | 352 | 363 | 367 | 375 | 399 | 406 | 394 | 389
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 252 | 246 | 230 | 215 | 195 | 164 | 137 | 87 | 42 | 12
Total of IBNR liabilities plus expected development on reported claims | $ 49 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 78,399 |  |  |  |  |  |  |  |  |
Insurance | Third party occurrence business | 2017 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 398 | 408 | 404 | 406 | 407 | 412 | 422 | 417 | 417 |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 289 | 271 | 247 | 221 | 165 | 135 | 100 | 52 | 13 |
Total of IBNR liabilities plus expected development on reported claims | $ 72 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 84,591 |  |  |  |  |  |  |  |  |
Insurance | Third party occurrence business | 2018 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 435 | 448 | 461 | 459 | 451 | 450 | 453 | 430 |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 289 | 271 | 247 | 200 | 154 | 115 | 64 | 17 |  |
Total of IBNR liabilities plus expected development on reported claims | $ 84 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 79,101 |  |  |  |  |  |  |  |  |
Insurance | Third party occurrence business | 2019 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 439 | 451 | 470 | 471 | 480 | 487 | 456 |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 282 | 255 | 214 | 173 | 122 | 73 | 18 |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 80 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 87,700 |  |  |  |  |  |  |  |  |
Insurance | Third party occurrence business | 2020 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 594 | 606 | 632 | 640 | 616 | 606 |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 374 | 318 | 235 | 155 | 76 | 24 |  |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 91 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 92,035 |  |  |  |  |  |  |  |  |
Insurance | Third party occurrence business | 2021 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 688 | 671 | 659 | 662 | 622 |  |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 444 | 323 | 174 | 91 | 26 |  |  |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 66 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 94,124 |  |  |  |  |  |  |  |  |
Insurance | Third party occurrence business | 2022 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 737 | 735 | 726 | 687 |  |  |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 294 | 186 | 85 | 24 |  |  |  |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 300 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 95,570 |  |  |  |  |  |  |  |  |
Insurance | Third party occurrence business | 2023 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 936 | 936 | 877 |  |  |  |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 264 | 156 | 32 |  |  |  |  |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 482 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 100,702 |  |  |  |  |  |  |  |  |
Insurance | Third party occurrence business | 2024 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 1,038 | 1,001 |  |  |  |  |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 136 | 37 |  |  |  |  |  |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 756 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 103,711 |  |  |  |  |  |  |  |  |
Insurance | Third party occurrence business | 2025 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 1,153 |  |  |  |  |  |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 46 |  |  |  |  |  |  |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 1,022 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 79,110 |  |  |  |  |  |  |  |  |
Insurance | Third party claims-made business |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 5,334 |  |  |  |  |  |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 2,609 |  |  |  |  |  |  |  |  |
All outstanding liabilities before 2016, net of reinsurance | 89 |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses, net of reinsurance | 2,814 |  |  |  |  |  |  |  |  |
Insurance | Third party claims-made business | 2016 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | 325 | 329 | 327 | 329 | 327 | 322 | 314 | 308 | 291 | 275
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 304 | 296 | 295 | 257 | 242 | 205 | 158 | 127 | 68 | 11
Total of IBNR liabilities plus expected development on reported claims | $ 8 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 15,135 |  |  |  |  |  |  |  |  |
Insurance | Third party claims-made business | 2017 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 326 | 339 | 337 | 316 | 323 | 308 | 311 | 285 | 270 |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 284 | 276 | 257 | 232 | 196 | 143 | 113 | 67 | 9 |
Total of IBNR liabilities plus expected development on reported claims | $ 23 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 15,712 |  |  |  |  |  |  |  |  |
Insurance | Third party claims-made business | 2018 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 362 | 366 | 366 | 347 | 335 | 319 | 314 | 272 |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 305 | 285 | 258 | 208 | 158 | 118 | 68 | 12 |  |
Total of IBNR liabilities plus expected development on reported claims | $ 22 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 17,304 |  |  |  |  |  |  |  |  |
Insurance | Third party claims-made business | 2019 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 326 | 329 | 329 | 321 | 317 | 317 | 288 |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 254 | 235 | 196 | 154 | 122 | 65 | 12 |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 34 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 17,428 |  |  |  |  |  |  |  |  |
Insurance | Third party claims-made business | 2020 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 419 | 432 | 445 | 423 | 412 | 383 |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 309 | 265 | 214 | 151 | 87 | 17 |  |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 54 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 17,580 |  |  |  |  |  |  |  |  |
Insurance | Third party claims-made business | 2021 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 446 | 461 | 498 | 517 | 514 |  |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 269 | 223 | 162 | 90 | 23 |  |  |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 119 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 19,120 |  |  |  |  |  |  |  |  |
Insurance | Third party claims-made business | 2022 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 570 | 589 | 654 | 668 |  |  |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 307 | 218 | 100 | 25 |  |  |  |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 186 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 21,348 |  |  |  |  |  |  |  |  |
Insurance | Third party claims-made business | 2023 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 901 | 895 | 809 |  |  |  |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 332 | 200 | 64 |  |  |  |  |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 375 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 26,037 |  |  |  |  |  |  |  |  |
Insurance | Third party claims-made business | 2024 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 777 | 736 |  |  |  |  |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 196 | 56 |  |  |  |  |  |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 432 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 29,857 |  |  |  |  |  |  |  |  |
Insurance | Third party claims-made business | 2025 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 882 |  |  |  |  |  |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 49 |  |  |  |  |  |  |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 736 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 29,188 |  |  |  |  |  |  |  |  |
Insurance | Multi-line and other specialty |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 8,189 |  |  |  |  |  |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 5,400 |  |  |  |  |  |  |  |  |
All outstanding liabilities before 2016, net of reinsurance | 38 |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses, net of reinsurance | 2,827 |  |  |  |  |  |  |  |  |
Insurance | Multi-line and other specialty | 2016 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | 403 | 404 | 406 | 408 | 408 | 410 | 416 | 427 | 430 | 408
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 397 | 396 | 391 | 390 | 385 | 379 | 362 | 341 | 304 | $ 176
Total of IBNR liabilities plus expected development on reported claims | $ 3 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 196,531 |  |  |  |  |  |  |  |  |
Insurance | Multi-line and other specialty | 2017 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 516 | 514 | 515 | 512 | 504 | 500 | 491 | 500 | 482 |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 499 | 493 | 479 | 472 | 446 | 423 | 380 | 342 | $ 181 |
Total of IBNR liabilities plus expected development on reported claims | $ 4 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 235,002 |  |  |  |  |  |  |  |  |
Insurance | Multi-line and other specialty | 2018 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 566 | 564 | 564 | 564 | 564 | 562 | 564 | 512 |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 550 | 543 | 526 | 508 | 479 | 442 | 388 | $ 211 |  |
Total of IBNR liabilities plus expected development on reported claims | $ 6 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 265,421 |  |  |  |  |  |  |  |  |
Insurance | Multi-line and other specialty | 2019 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 666 | 670 | 656 | 650 | 639 | 611 | 566 |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 629 | 611 | 576 | 548 | 486 | 385 | $ 212 |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 8 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 247,961 |  |  |  |  |  |  |  |  |
Insurance | Multi-line and other specialty | 2020 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 519 | 519 | 515 | 513 | 567 | 616 |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 469 | 450 | 405 | 358 | 308 | $ 171 |  |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 22 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 170,515 |  |  |  |  |  |  |  |  |
Insurance | Multi-line and other specialty | 2021 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 643 | 634 | 613 | 618 | 634 |  |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 557 | 511 | 427 | 334 | $ 157 |  |  |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 33 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 137,791 |  |  |  |  |  |  |  |  |
Insurance | Multi-line and other specialty | 2022 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 624 | 639 | 640 | 677 |  |  |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 491 | 439 | 370 | $ 177 |  |  |  |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 64 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 156,572 |  |  |  |  |  |  |  |  |
Insurance | Multi-line and other specialty | 2023 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 823 | 809 | 815 |  |  |  |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 588 | 489 | $ 253 |  |  |  |  |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 133 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 176,315 |  |  |  |  |  |  |  |  |
Insurance | Multi-line and other specialty | 2024 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 1,442 | 1,419 |  |  |  |  |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 727 | $ 336 |  |  |  |  |  |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 508 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 200,279 |  |  |  |  |  |  |  |  |
Insurance | Multi-line and other specialty | 2025 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 1,987 |  |  |  |  |  |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 493 |  |  |  |  |  |  |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 1,195 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 140,332 |  |  |  |  |  |  |  |  |

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