v3.8.0.1

Investments (Analysis of Past Due Commercial Mortgage and Other Loans) (Details) - USD ($) $ in Millions | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current | $ 56,144 | $ 52,851
Total Past Due | 7 | 34
Total Loans | 56,151 | 52,885
Non-Accrual Status(2) | 96 | 54
30-59 Days Past Due |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 3 | 28
60-89 Days Past Due |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 0 | 1
Greater Than 90 Days |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 4 | 5
Commercial Mortgage Loans |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current | 52,084 | 49,006
Total Past Due | 0 | 21
Total Loans | 52,084 | 49,027
Non-Accrual Status(2) | 71 | 49
Commercial Mortgage Loans | 30-59 Days Past Due |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 0 | 21
Commercial Mortgage Loans | 60-89 Days Past Due |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 0 | 0
Commercial Mortgage Loans | Greater Than 90 Days |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 0 | 0
Agricultural property loans |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current | 3,201 | 2,956
Total Past Due | 2 | 2
Total Loans | 3,203 | 2,958
Non-Accrual Status(2) | 23 | 2
Agricultural property loans | 30-59 Days Past Due |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 0 | 0
Agricultural property loans | 60-89 Days Past Due |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 0 | 0
Agricultural property loans | Greater Than 90 Days |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 2 | 2
Residential property loans |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current | 191 | 241
Total Past Due | 5 | 11
Total Loans | 196 | 252
Non-Accrual Status(2) | 2 | 3
Residential property loans | 30-59 Days Past Due |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 3 | 7
Residential property loans | 60-89 Days Past Due |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 0 | 1
Residential property loans | Greater Than 90 Days |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 2 | 3
Other collateralized loans |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current | 5 | 10
Total Past Due | 0 | 0
Total Loans | 5 | 10
Non-Accrual Status(2) | 0 | 0
Other collateralized loans | 30-59 Days Past Due |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 0 | 0
Other collateralized loans | 60-89 Days Past Due |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 0 | 0
Other collateralized loans | Greater Than 90 Days |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 0 | 0
Uncollateralized loans |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current | 663 | 638
Total Past Due | 0 | 0
Total Loans | 663 | 638
Non-Accrual Status(2) | 0 | 0
Uncollateralized loans | 30-59 Days Past Due |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 0 | 0
Uncollateralized loans | 60-89 Days Past Due |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | 0 | 0
Uncollateralized loans | Greater Than 90 Days |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | $ 0 | $ 0

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- Definition Net amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services. + 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 210.5-02.3) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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