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v3.25.0.1

Segment Information - Reconciliation of Other Items from Segments to Consolidated (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Segment Reporting Information [Line Items] |  |  |
Amortization of deferred policy acquisition costs ("DAC") | $ 2,282 | $ 2,044 | $ 1,824
Insurance operating costs and other expenses | 5,258 | 4,881 | 4,841
Amortization of other intangible assets | 71 | 71 | 71
Policyholder Dividends, Expense | 39 | 39 | 29
Benefits, losses and expenses | 22,686 | 21,439 | 20,100
Benefits, losses and loss adjustment expenses | 14,874 | 14,238 | 13,138
Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Benefits, losses and expenses | 22,346 | 21,097 | 19,738
Operating Segments | P&C Business Insurance [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Prior accident year development [1] | (231) | (225) | (231)
Amortization of deferred policy acquisition costs ("DAC") | 1,993 | 1,779 | 1,563
Insurance operating costs and other expenses | 1,973 | 1,837 | 1,788
Amortization of other intangible assets | 29 | 29 | 29
Policyholder Dividends, Expense | 39 | 39 | 29
Benefits, losses and expenses | 11,475 | 10,470 | 9,578
Operating Segments | P&C Personal Insurance [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Prior accident year development [1] | (108) | 11 | (13)
Amortization of deferred policy acquisition costs ("DAC") | 255 | 231 | 228
Insurance operating costs and other expenses | 673 | 576 | 594
Amortization of other intangible assets | 2 | 2 | 2
Benefits, losses and expenses | 3,455 | 3,347 | 2,988
Operating Segments | Property & Casualty Other Operations [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Prior accident year development [1] | 219 | 224 | 280
Amortization of deferred policy acquisition costs ("DAC") | 0 | 0 | 0
Insurance operating costs and other expenses | 9 | 4 | 9
Amortization of other intangible assets | 0 | 0 | 0
Benefits, losses and expenses | 228 | 228 | 289
Operating Segments | Employee Benefits [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Amortization of deferred policy acquisition costs ("DAC") | 34 | 34 | 33
Insurance operating costs and other expenses | 1,609 | 1,514 | 1,467
Amortization of other intangible assets | 40 | 40 | 40
Benefits, losses and expenses | 6,364 | 6,271 | 6,057
Operating Segments | Employee Benefits [Member] | Disability Insurance Policy [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Benefits, losses and loss adjustment expenses | 2,432 | 2,370 | 2,263
Operating Segments | Employee Benefits [Member] | Life Insurance Product Line [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Benefits, losses and loss adjustment expenses | 2,060 | 2,157 | 2,091
Operating Segments | Employee Benefits [Member] | Insurance, Other [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Benefits, losses and loss adjustment expenses | 189 | 156 | 163
Operating Segments | Hartford Funds |  |  |
Segment Reporting Information [Line Items] |  |  |
Amortization of deferred policy acquisition costs ("DAC") | 0 | 0 | 0
Amortization of other intangible assets | 0 | 0 | 0
Benefits, losses and expenses | 824 | 781 | 826
Investment Advisory, Management and Administrative Service | 289 | 265 | 282
Employee Benefits and Share-Based Compensation | 131 | 121 | 123
Distribution Service | 299 | 289 | 315
Other General and Administrative Expense | 105 | 106 | 106
Non-Catastrophe | Operating Segments | P&C Business Insurance [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Current Year Claims and Claims Adjustment Expense | 7,186 | 6,575 | 5,959
Non-Catastrophe | Operating Segments | P&C Personal Insurance [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Current Year Claims and Claims Adjustment Expense | 2,351 | 2,287 | 1,969
Catastrophes | Operating Segments | P&C Business Insurance [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Current Year Claims and Claims Adjustment Expense | 486 | 436 | 441
Catastrophes | Operating Segments | P&C Personal Insurance [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Current Year Claims and Claims Adjustment Expense | $ 282 | $ 240 | $ 208

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-28 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 55 -Paragraph 40 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482640/350-30-55-40 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482665/350-30-50-2 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482686/350-30-45-2 + Details
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