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Investments - Mortgage Loans (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2018 USD ($)
Scheduled Mortgage Loan Principal Repayments [Abstract] |
Mortgage loans | $ 1,361
Commercial Real Estate |
Movement in Mortgage Loans on Real Estate [Roll Forward] |
New mortgage loans | 4
Mortgage loans fully repaid | 27
Mortgage loans foreclosed | 0
Scheduled Mortgage Loan Principal Repayments [Abstract] |
2019 | 145
2020 | 109
2021 | 269
2022 | 228
2023 | 83
Thereafter | 527
Mortgage loans | 1,361
Commercial Real Estate | Category 1 |
Scheduled Mortgage Loan Principal Repayments [Abstract] |
Mortgage loans | 42
Commercial Real Estate | Category 2 to 4 |
Scheduled Mortgage Loan Principal Repayments [Abstract] |
Mortgage loans | 1,301
Commercial Real Estate | Categories 5 and 6 |
Scheduled Mortgage Loan Principal Repayments [Abstract] |
Mortgage loans | 18
Commercial Real Estate | Category 7 |
Scheduled Mortgage Loan Principal Repayments [Abstract] |
Mortgage loans | $ 0

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- Definition The balance represents the amount of loans that are secured by real estate mortgages, offset by the reserve to cover probable credit losses on the loan portfolio. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1(c)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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- Definition The amount of mortgage loans on real estate which were foreclosed on during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29.6) -URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule IV) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 + Details
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