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Reinsurance (Tables) | 12 Months Ended
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Dec. 31, 2020
Reinsurance Disclosures [Abstract] |
Schedule of effect of reinsurance on premiums - traditional long-duration products[Table Text Block] | The effect of reinsurance on premiums for the Company’s traditional long-duration contracts was as follows:
| Years Ended December 31,
2020 |  | 2019 |  | 2018
(in millions)
Direct premiums | $ | 565 |  |  | $ | 621 |  |  | $ | 621 |
Reinsurance ceded | (224) |  |  | (224) |  |  | (225) |
Net premiums | $ | 341 |  |  | $ | 397 |  |  | $ | 396 |
Schedule of effect of reinsurance on premiums - short-duration products [Table Text Block] | The effect of reinsurance on premiums for the Company’s short-duration contracts was as follows:
| Years Ended December 31,
2019 (1) |  | 2018
(in millions)
Written premiums |  |  |
Direct | $ | 864 |  |  | $ | 1,101 |
Ceded | (23) |  |  | (55) |
Total net written premiums | $ | 841 |  |  | $ | 1,046 |
Earned premiums |  |  |
Direct | $ | 841 |  |  | $ | 1,124 |
Ceded | (24) |  |  | (94) |
Total net earned premiums | $ | 817 |  |  | $ | 1,030 |
(1) 2019 amounts include AAH premiums as of September 30, 2019 prior to the sale.

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- Definition Effects of Reinsurance on Property and Casualty Premiums Written and Earned [Table Text Block] + References No definition available. + Details
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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://fasb.org/us-gaap/role/ref/legacyRef -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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