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Reinsurance (Tables) | 12 Months Ended
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Dec. 31, 2017
Reinsurance Disclosures [Abstract] |
Components of Reinsurance Receivables | The following table presents the amounts receivable from reinsurers.
December 31 |  |  |
(In millions) | 2017 |  | 2016
Reinsurance receivables related to insurance reserves: |  |  |
Ceded claim and claim adjustment expenses | $ | 3,934 |  |  | $ | 4,094 |
Ceded future policy benefits | 230 |  |  | 212 |
Reinsurance receivables related to paid losses | 126 |  |  | 147 |
Reinsurance receivables | 4,290 |  |  | 4,453 |
Allowance for uncollectible reinsurance | (29 | ) |  | (37 | )
Reinsurance receivables, net of allowance for uncollectible reinsurance | $ | 4,261 |  |  | $ | 4,416 |
Components of Earned and Written Premiums | The effects of reinsurance on earned premiums and written premiums are presented in the following tables.
(In millions) | Direct |  | Assumed |  | Ceded |  | Net |  | Assumed/ Net %
2017 Earned Premiums |  |  |  |  |  |  |  |  |
Property and casualty | $ | 10,447 |  |  | $ | 317 |  |  | $ | 4,315 |  |  | $ | 6,449 |  |  | 4.9 | %
Long term care | 489 |  |  | 50 |  |  | — |  |  | 539 |  |  | 9.3 | %
Total earned premiums | $ | 10,936 |  |  | $ | 367 |  |  | $ | 4,315 |  |  | $ | 6,988 |  |  | 5.3 | %
2016 Earned Premiums |  |  |  |  |  |  |  |  |
Property and casualty | $ | 10,400 |  |  | $ | 258 |  |  | $ | 4,270 |  |  | $ | 6,388 |  |  | 4.0 | %
Long term care | 486 |  |  | 50 |  |  | — |  |  | 536 |  |  | 9.3 | %
Total earned premiums | $ | 10,886 |  |  | $ | 308 |  |  | $ | 4,270 |  |  | $ | 6,924 |  |  | 4.4 | %
2015 Earned Premiums |  |  |  |  |  |  |  |  |
Property and casualty | $ | 9,853 |  |  | $ | 274 |  |  | $ | 3,754 |  |  | $ | 6,373 |  |  | 4.3 | %
Long term care | 498 |  |  | 50 |  |  | — |  |  | 548 |  |  | 9.1 | %
Total earned premiums | $ | 10,351 |  |  | $ | 324 |  |  | $ | 3,754 |  |  | $ | 6,921 |  |  | 4.7 | %
(In millions) | Direct |  | Assumed |  | Ceded |  | Net |  | Assumed/ Net %
2017 Written Premiums |  |  |  |  |  |  |  |  |
Property and casualty | $ | 10,655 |  |  | $ | 327 |  |  | $ | 4,449 |  |  | $ | 6,533 |  |  | 5.0 | %
Long term care | 486 |  |  | 50 |  |  | — |  |  | 536 |  |  | 9.3 | %
Total written premiums | $ | 11,141 |  |  | $ | 377 |  |  | $ | 4,449 |  |  | $ | 7,069 |  |  | 5.3 | %
2016 Written Premiums |  |  |  |  |  |  |  |  |
Property and casualty | $ | 10,451 |  |  | $ | 245 |  |  | $ | 4,255 |  |  | $ | 6,441 |  |  | 3.8 | %
Long term care | 495 |  |  | 52 |  |  | — |  |  | 547 |  |  | 9.5 | %
Total written premiums | $ | 10,946 |  |  | $ | 297 |  |  | $ | 4,255 |  |  | $ | 6,988 |  |  | 4.3 | %
2015 Written Premiums |  |  |  |  |  |  |  |  |
Property and casualty | $ | 9,852 |  |  | $ | 270 |  |  | $ | 3,702 |  |  | $ | 6,420 |  |  | 4.2 | %
Long term care | 493 |  |  | 49 |  |  | — |  |  | 542 |  |  | 9.0 | %
Total written premiums | $ | 10,345 |  |  | $ | 319 |  |  | $ | 3,702 |  |  | $ | 6,962 |  |  | 4.6 | %

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- Definition Tabular disclosure of the effects of reinsurance, for example, but not limited to, disclosure of direct, assumed, and ceded insurance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 605 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547 + Details
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