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SCHEDULE IV REINSURANCE (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Premiums earned |  |  |  |  |  |
Net earned premiums | $ 1,987.3 |  | $ 2,063.6 |  | $ 1,924.5 |
OneBeacon |  |  |  |  |  |
Premiums earned |  |  |  |  |  |
Gross amount | 1,043.3 | [1] | 1,158.3 | [1] | 1,035.9 | [1]
Ceded to other companies | (71.4) | [1] | (79.1) | [1] | (66.0) | [1]
Assumed from other companies | 148.5 | [1] | 52.8 | [1] | 42.3 | [1]
Net earned premiums | 1,120.4 | [1] | 1,132.0 | [1] | 1,012.2 | [1]
Percentage of amount assumed to net | 13.30% | [1] | 4.70% | [1] | 4.20% | [1]
Sirius Group |  |  |  |  |  |
Premiums earned |  |  |  |  |  |
Gross amount | 174.0 |  | 169.9 |  | 128.5 |
Ceded to other companies | (246.2) |  | (226.6) |  | (206.0) |
Assumed from other companies | 938.6 |  | 988.3 |  | 989.8 |
Net earned premiums | $ 866.4 |  | $ 931.6 |  | $ 912.3 |
Percentage of amount assumed to net | 108.30% |  | 106.10% |  | 108.50% |
[1] | The amounts shown excludes balances reclassified to held for sale in the consolidated balance sheets related to the Runoff Transaction as of December 31, 2013 and 2012 and to AutoOne as of December 31, 2011. See Note 21 - “Discontinued Operations”.

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- Definition Amount of earned premiums assumed from other entities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 17 -Article 12 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 235 -Section S99 -Paragraph 2 -Subparagraph (SX 210.12-17) -URI http://asc.fasb.org/extlink&oid=6588446&loc=d3e574992-122915 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.1) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 605 -Section 50 -Paragraph 1 -Subparagraph (b),(c)(2) -URI http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 1 -Article 7 + Details
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