The following table presents total fixed maturity securities by NRSRO designation and the equivalent designations of the NAIC, except for certain structured securities, which are presented as described above, as well as the percentage, based on estimated fair value that each designation is comprised of at: December 31, 2012 2011 NAIC Rating Rating Agency Designation Amortized Cost Unrealized Gain (Loss) Estimated Fair Value %of Total Amortized Cost Unrealized Gain (Loss) Estimated Fair Value %of Total (In millions) (In millions) 1 Aaa/Aa/A .................................... $234,371 $ 24,197 $ 258,568 69.1% $ 230,195 $ 16,591 $ 246,786 70.5% 2 Baa ........................................ 81,530 8,663 90,193 24.1 73,352 5,179 78,531 22.4 Subtotal investment grade ..................... 315,901 32,860 348,761 93.2 303,547 21,770 325,317 92.9 3 Ba ......................................... 13,882 552 14,434 3.8 14,604 (229) 14,375 4.1 4 B .......................................... 9,470 137 9,607 2.6 9,437 (588) 8,849 2.5 5 Caa and lower ................................ 1,543 (164) 1,379 0.4 2,142 (474) 1,668 0.5 6 In or near default .............................. 74 11 85 — 81 (19) 62 — Subtotal below investment grade ................ 24,969 536 25,505 6.8 26,264 (1,310) 24,954 7.1 Total fixed maturity securities ................. $340,870 $ 33,396 $ 374,266 100.0% $ 329,811 $ 20,460 $ 350,271 100.0% Fixed Maturity Securities — by Sector & Credit Quality Rating NAIC Rating: 1 2 3 4 5 6 Total Estimated Fair Value Rating Agency Designation: Aaa/Aa/A Baa Ba B Caa and Lower In or Near Default (In millions) December 31, 2011: U.S. corporate ......................................... $ 51,045 $ 41,533 $ 8,677 $ 4,257 $ 271 $ 2 $ 105,785 Foreign corporate ....................................... 33,403 26,383 2,915 1,173 140 4 64,018 Foreign government ..................................... 42,360 7,553 1,146 1,281 196 — 52,536 U.S. Treasury and agency ................................ 40,012 — — — — — 40,012 RMBS ............................................... 36,699 1,477 1,450 2,026 933 52 42,637 CMBS ............................................... 18,403 388 125 57 96 — 19,069 ABS ................................................. 12,507 355 39 50 24 4 12,979 State and political subdivision ............................. 12,357 842 23 5 8 — 13,235 Total fixed maturity securities ............................ $246,786 $ 78,531 $ 14,375 $ 8,849 $ 1,668 $ 62 $ 350,271 Percentage of total .................................... 70.5% 22.4% 4.1% 2.5% 0.5% —% 100.0% December 31, 2012: U.S. corporate ......................................... $ 51,648 $ 48,622 $ 8,597 $ 4,831 $ 380 $ 48 $ 114,126 Foreign corporate ....................................... 31,937 30,509 3,249 1,418 66 5 67,184 Foreign government ..................................... 46,314 8,501 933 1,504 84 — 57,336 U.S. Treasury and agency ................................ 47,967 — — — — — 47,967 RMBS ............................................... 32,377 894 1,582 1,809 790 27 37,479 CMBS ............................................... 18,843 193 43 11 39 — 19,129 ABS ................................................. 15,247 673 18 34 20 5 15,997 State and political subdivision ............................. 14,235 801 12 — — — 15,048 Total fixed maturity securities ............................ $258,568 $ 90,193 $ 14,434 $ 9,607 $ 1,379 $ 85 $ 374,266 Percentage of total .................................... 69.1% 24.1% 3.8% 2.6% 0.4% —% 100.0% MetLife, Inc. 40 The following tables present total fixed maturity securities, based on estimated fair value, by sector classification and by NRSRO designation and the equivalent designations of the NAIC, except for certain structured securities, which are presented as described above: