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Summary of Investments Other Than Investments in Related Parties | 12 Months Ended
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Dec. 31, 2016
Summary of Investments, Other than Investments in Related Parties [Abstract] |
Summary of Investments Other Than Investments in Related Parties | REINSURANCE GROUP OF AMERICA, INCORPORATED SCHEDULE I-SUMMARY OF INVESTMENTS-OTHER THAN INVESTMENTS IN RELATED PARTIES December 31, 2016 (in millions)
Type of Investment |  | Cost |  | Fair Value |  | Amount at Which Shown in the Balance Sheets(1)
Fixed maturity securities: |  |  |  |  |  |
Bonds: |  |  |  |  |  |
United States government and government agencies and authorities |  | $ | 1,519 |  |  | $ | 1,468 |  |  | $ | 1,468 |
State and political subdivisions |  | 567 |  |  | 592 |  |  | 592 |
Foreign governments(2) |  | 5,157 |  |  | 6,343 |  |  | 6,343 |
Public utilities |  | 1,971 |  |  | 2,091 |  |  | 2,091 |
Mortgage-backed and asset-backed securities |  | 4,044 |  |  | 4,072 |  |  | 4,072 |
All other corporate bonds |  | 16,954 |  |  | 17,528 |  |  | 17,528 |
Total fixed maturity securities |  | 30,212 |  |  | 32,094 |  |  | 32,094 |
Equity securities: |  |  |  |  |  |
Non-redeemable preferred stock |  | 56 |  |  | 51 |  |  | 51 |
Other equity securities |  | 230 |  |  | 224 |  |  | 224 |
Total equity securities |  | 286 |  |  | 275 |  |  | 275 |
Mortgage loans on real estate |  | 3,776 |  |  |  |  | 3,776 |
Policy loans |  | 1,428 |  |  |  |  | 1,428 |
Funds withheld at interest |  | 5,876 |  |  |  |  | 5,876 |
Short-term investments |  | 77 |  |  |  |  | 77 |
Other invested assets |  | 1,315 |  |  |  |  | 1,315 |
Total investments |  | $ | 42,970 |  |  |  |  | $ | 44,841 |
(1) | Fixed maturity securities are classified as available-for-sale and carried at fair value.
(2) | Includes fixed maturities directly issued by foreign governments, supranational and foreign government-sponsored enterprises.

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- Definition The entire disclosure for the schedule applicable to insurance companies summarizing investments held as of the most recent audited balance sheet. At a minimum, such summary is by three major categories of investments including: (1) fixed maturities primarily consisting of bonds, including convertibles and bonds with warrants, and redeemable preferred stocks, (2) equity securities primarily consisting of common stocks and nonredeemable preferred stocks, and (3) other investments including mortgage loans on real estate, real estate held for investment, real estate acquired in satisfaction of debt, policy loans, other long-term investments, and short-term investments not otherwise categorized. The information provided with respect to each item within each category includes: (A) the original cost of equity securities and, as to fixed maturity securities, original cost reduced by repayments and adjusted for amortization of premiums or accrual of discounts, (B) fair value as of the reporting date, and (C) the amount at which the item within each category is shown in the statement of financial position; with respect to (C), if the amount at which shown in the statement of financial position is different from the items original [amortized] cost or fair value, an explanation of the difference may be included herein. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 7 -Subparagraph (SX 210.12-15) -URI http://asc.fasb.org/extlink&oid=50485924&loc=d3e611379-123010 + Details
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