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Investments - Other investments by type (Details) - USD ($) $ in Millions | Mar. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Schedule of Investments [Line Items] |  |
Other | $ 4,092 | $ 3,972
Bank loans |  |
Schedule of Investments [Line Items] |  |
Other | 1,681 | 1,702
Policy loans |  |
Schedule of Investments [Line Items] |  |
Other | 900 | 905
Real estate |  |
Schedule of Investments [Line Items] |  |
Other | 763 | 632
Agent loans |  |
Schedule of Investments [Line Items] |  |
Other | 562 | 538
Other |  |
Schedule of Investments [Line Items] |  |
Other | $ 186 | $ 195

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- Definition Amount of investments classified as other. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: 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(f,g)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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