Table of Contents The following tables present the estimated effects on the fair value of our financial instruments as of December 31, 2018 and 2017 due to an increase in yield rates of 100 basis points, a 10% decline in foreign currency exchange rates and a 10% decline in the S&P 500, with all other variables held constant. Market Risk Scenario 1 Market Risk Scenario 1 December 31, 2018 Increase (Decrease) (In millions) Estimated Fair Value Interest Rate Risk Foreign Currency Risk Equity Price Risk Assets: Fixed maturity securities $ 39,546 $ (2,440) $ (203) $ — Equity securities 780 (29 ) (2 ) (18 ) Limited partnership investments 1,982 — — (79) Other invested assets 53 — (4 ) — Mortgage loans  (1) 827 (36) — — Short term investments 1,286 (1 ) (12 ) — Total assets 44,474 (2,506) (221) (97) Derivative financial instruments, included in Other liabilities 4 15 — — Total securities $ 44,478 $ (2,491) $ (221) $ (97) Long term debt  (1) $ 2,731 $ (120 ) $ — $ — December 31, 2017 Increase (Decrease) (In millions) Estimated Fair Value Interest Rate Risk Foreign Currency Risk Equity Price Risk Assets: Fixed maturity securities $ 41,487 $ (2,559) $ (215) $ — Equity securities 695 (26 ) (2 ) (6 ) Limited partnership investments 2,369 — — (95) Other invested assets 44 — (3 ) — Mortgage loans  (1) 844 (40) — — Short term investments 1,436 (1 ) (10 ) — Total assets 46,875 (2,626) (230) (101) Derivative financial instruments, included in Other liabilities (3 ) 17 — — Total securities $ 46,872 $ (2,609) $ (230) $ (101) Long term debt  (1) $ 2,896 $ (148 ) $ — $ — (1) Reported at amortized value in the Consolidated Balance Sheets included under Item 8 and not adjusted for fair value changes. (1) Reported at amortized value in the Consolidated Balance Sheets included under Item 8 and not adjusted for fair value changes. 52