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Policyholder Contract Liabilities (Tables) | 9 Months Ended | 12 Months Ended
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Sep. 30, 2020 | Dec. 31, 2020
Insurance [Abstract] |  |
Schedule of Liability for Future Policy Benefits |  | Policyholder Obligations at December 31, 2020 and 2019 were as follows:
DOLLARS IN MILLIONS |  | Dec 31, 2020 |  | Dec 31, 2019 |  |  |  |  |  |  |  |
FHLB Funding Agreements |  | $ | 407.8 |  |  | $ | 243.4 |  |  |  |  |  |  |  |  |
Other |  | 59.2 |  |  | 66.4 |  |  |  |  |  |  |  |  |
Total |  | $ | 467.0 |  |  | $ | 309.8 |  |  |  |  |  |  |  |  |
Schedule of Federal Home Loan Bank, Advances, by Branch of FHLB Bank |
DOLLARS IN MILLIONS |  | Dec 31, 2020 |  | Dec 31, 2019 |  |  |  |  |  |  |  |
Liability under Funding Agreements |  | $ | 407.8 |  |  | $ | 243.4 |  |  |  |  |  |  |  |  |
Fair Value of Collateral Pledged |  | 530.5 |  |  | 287.8 |  |  |  |  |  |  |  |  |
FHLB of Chicago Common Stock Owned at Cost |  | 11.8 |  |  | 4.9 |  |  |  |  |  |  |  |  |

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- Definition Tabular disclosure of advances by federal home loan bank by branch. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.13,16) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823 + Details
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- Definition The entire disclosure for the present values of future benefits to be paid to or on behalf of policyholders and related expenses less the present value of future net premiums using assumptions such as estimates of expected investment yields, mortality, morbidity, terminations and expenses, applicable at the time the insurance contracts are made and unpaid claim costs relating to insurance contracts including estimates of costs relating to incurred but not reported claims based on the estimated ultimate cost of settling the claims (including effects of inflation and other societal and economic factors), using past experience adjusted for current trends and any other factors that would modify past experience by element such as business segment, country and interest rate range. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(13)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 + Details
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