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Schedule 4 - Reinsurance Schedule (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items] |  |  |  |  |  |  |  |  |  |  |
Direct Premiums, Life Insurance in Force | $ 19,435.1 |  |  |  | $ 19,208.7 |  |  |  | $ 19,435.1 | $ 19,208.7 | $ 20,889.0
Ceded Premiums, Life Insurance in Force | 436.4 |  |  |  | 455.2 |  |  |  | 436.4 | 455.2 | 486.9
Ceded to Other Companies |  |  |  |  |  |  |  |  | 31.6 | 18.2 | 19.0
Assumed Premiums, Life Insurance in Force | 172.7 |  |  |  | 184.0 |  |  |  | 172.7 | 184.0 | 195.0
Premiums, Net, Life Insurance in Force | 19,171.4 |  |  |  | 18,937.5 |  |  |  | 19,171.4 | 18,937.5 | 20,597.1
Net Amount | $ 1,063.6 | $ 1,052.9 | $ 658.1 | $ 609.8 | $ 605.9 | $ 598.2 | $ 582.5 | $ 563.4 | $ 3,384.4 | $ 2,350.0 | $ 2,220.0
Life Insurance in Force Premiums, Percentage Assumed to Net | 0.90% |  |  |  | 1.00% |  |  |  | 0.90% | 1.00% | 0.90%
Life Insurance Product Line [Member] |  |  |  |  |  |  |  |  |  |  |
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items] |  |  |  |  |  |  |  |  |  |  |
Direct Premiums Earned |  |  |  |  |  |  |  |  | $ 378.2 | $ 366.8 | $ 381.4
Ceded to Other Companies |  |  |  |  |  |  |  |  | 1.2 | 1.4 | 1.4
Assumed Premiums Earned |  |  |  |  |  |  |  |  | 1.0 | 1.1 | 1.3
Net Amount |  |  |  |  |  |  |  |  | $ 378.0 | $ 366.5 | $ 381.3
SEC Schedule, 12-17, Insurance Companies, Reinsurance, Premium, Percentage Assumed to Net |  |  |  |  |  |  |  |  | 0.30% | 0.30% | 0.30%
Accident and Health Insurance [Member] |  |  |  |  |  |  |  |  |  |  |
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items] |  |  |  |  |  |  |  |  |  |  |
Direct Premiums Earned |  |  |  |  |  |  |  |  | $ 174.3 | $ 171.0 | $ 144.9
Ceded to Other Companies |  |  |  |  |  |  |  |  | 1.7 | 1.5 | 0.5
Assumed Premiums Earned |  |  |  |  |  |  |  |  | 5.3 | 5.4 | 5.3
Net Amount |  |  |  |  |  |  |  |  | $ 177.9 | $ 174.9 | $ 149.7
SEC Schedule, 12-17, Insurance Companies, Reinsurance, Premium, Percentage Assumed to Net |  |  |  |  |  |  |  |  | 3.00% | 3.10% | 3.50%
Property, Liability and Casualty Insurance [Member] |  |  |  |  |  |  |  |  |  |  |
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items] |  |  |  |  |  |  |  |  |  |  |
Direct Premiums Earned |  |  |  |  |  |  |  |  | $ 2,778.3 | $ 1,757.5 | $ 1,645.4
Ceded to Other Companies |  |  |  |  |  |  |  |  | 28.7 | 15.3 | 17.1
Assumed Premiums Earned |  |  |  |  |  |  |  |  | 78.9 | 66.4 | 60.7
Net Amount |  |  |  |  |  |  |  |  | $ 2,828.5 | $ 1,808.6 | $ 1,689.0
SEC Schedule, 12-17, Insurance Companies, Reinsurance, Premium, Percentage Assumed to Net |  |  |  |  |  |  |  |  | 2.80% | 3.70% | 3.60%
Operating Segments [Member] |  |  |  |  |  |  |  |  |  |  |
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items] |  |  |  |  |  |  |  |  |  |  |
Direct Premiums Earned |  |  |  |  |  |  |  |  | $ 3,330.8 | $ 2,295.3 | $ 2,171.7
Ceded to Other Companies |  |  |  |  |  |  |  |  | 31.6 | 18.2 | 19.0
Assumed Premiums Earned |  |  |  |  |  |  |  |  | 85.2 | 72.9 | 67.3
Net Amount |  |  |  |  |  |  |  |  | $ 3,384.4 | $ 2,350.0 | $ 2,220.0
SEC Schedule, 12-17, Insurance Companies, Reinsurance, Premium, Percentage Assumed to Net |  |  |  |  |  |  |  |  | 2.50% | 3.10% | 3.00%

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- Definition Amount, after effect of reinsurance, of life insurance issued and outstanding, as disclosed in supplementary reinsurance information. Includes, but is not limited to, dividend and adjustment to face value. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12 -Paragraph Column E -Subsection 17 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 235 -Section S99 -Paragraph 2 -Subparagraph (SX 210.12-17(Column E)) -URI http://asc.fasb.org/extlink&oid=34713774&loc=d3e574992-122915 + Details
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- Definition Percentage of assumed life insurance contract issued and outstanding to life insurance contract issued and outstanding after effect of reinsurance, as disclosed in supplementary reinsurance information. Includes, but is not limited to, dividend and adjustment to face value. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12 -Paragraph Column F -Subsection 17 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 235 -Section S99 -Paragraph 2 -Subparagraph (SX 210.12-17(Column F)) -URI http://asc.fasb.org/extlink&oid=34713774&loc=d3e574992-122915 + Details
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- Definition Amount of earned premiums assumed from other entities. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 605 -Section 50 -Paragraph 1 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(1)) -URI http://asc.fasb.org/extlink&oid=114873790&loc=SL114874131-224263 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 605 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 235 -Section S99 -Paragraph 2 -Subparagraph (SX 210.12-17(Column D)) -URI http://asc.fasb.org/extlink&oid=34713774&loc=d3e574992-122915 + Details
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- Definition Amount of earned premiums ceded to other entities. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 235 -Section S99 -Paragraph 2 -Subparagraph (SX 210.12-17(Column C)) -URI http://asc.fasb.org/extlink&oid=34713774&loc=d3e574992-122915 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(1)) -URI http://asc.fasb.org/extlink&oid=114873790&loc=SL114874131-224263 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 605 -Section 50 -Paragraph 1 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 605 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=84167274&loc=d3e27175-158546 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 605 -Section 50 -Paragraph 1 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 605 -Section 50 -Paragraph 1 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547 + Details
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