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Related party transaction Related Party Transactions (Tables) | 12 Months Ended
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Dec. 31, 2017
Related Party Transactions [Abstract] |
Schedule of Related Party Transactions [Table Text Block] | Transactions generated under these agreements were as follows:
| Year Ended December 31 |
(in millions of U.S. dollars) | 2017 |  |  | 2016 |  |  | 2015 |
Gross premiums written | $ | 464 |  |  | $ | 658 |  |  | $ | 305 |
Ceded premiums written | $ | 175 |  |  | $ | 208 |  |  | $ | 78 |
Commissions paid | $ | 101 |  |  | $ | 145 |  |  | $ | 60 |
Commissions received | $ | 37 |  |  | $ | 56 |  |  | $ | 19 |
Losses and loss expenses incurred | $ | 438 |  |  | $ | 313 |  |  | $ | 137 |

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- Definition Tabular disclosure of related party transactions. Examples of related party transactions include, but are not limited to, transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners and (d) affiliates. + References No definition available. + Details
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