Investments | INVESTMENTS Fixed Maturities and Equity Securities The following tables provide information relating to fixed maturities and equity securities (excluding investments classified as trading) as of the dates indicated: September 30, 2016 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value OTTI in AOCI(4) (in millions) Fixed maturities, available-for-sale U.S. Treasury securities and obligations of U.S. government authorities and agencies $ 20,359 $ 5,403 $ 37 $ 25,725 $ 0 Obligations of U.S. states and their political subdivisions 8,489 1,382 4 9,867 0 Foreign government bonds 86,008 22,522 130 108,400 0 U.S. corporate public securities 78,592 9,513 489 87,616 (9 ) U.S. corporate private securities(1) 29,905 2,789 226 32,468 (20 ) Foreign corporate public securities 27,185 3,619 155 30,649 (6 ) Foreign corporate private securities 20,645 966 616 20,995 0 Asset-backed securities(2) 10,318 178 121 10,375 (316 ) Commercial mortgage-backed securities 11,912 604 15 12,501 (1 ) Residential mortgage-backed securities(3) 4,332 319 3 4,648 (3 ) Total fixed maturities, available-for-sale(1) $ 297,745 $ 47,295 $ 1,796 $ 343,244 $ (355 ) Equity securities, available-for-sale $ 7,197 $ 2,611 $ 43 $ 9,765 September 30, 2016 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (in millions) Fixed maturities, held-to-maturity Foreign government bonds $ 965 $ 341 $ 0 $ 1,306 Foreign corporate public securities 717 83 0 800 Foreign corporate private securities(5) 93 4 0 97 Commercial mortgage-backed securities 1 0 0 1 Residential mortgage-backed securities(3) 695 57 0 752 Total fixed maturities, held-to-maturity(5) $ 2,471 $ 485 $ 0 $ 2,956 __________ (1) Excludes notes with amortized cost of $1,127 million (fair value, $1,127 million ) which have been offset with the associated payables under a netting agreement. (2) Includes credit-tranched securities collateralized by sub-prime mortgages, auto loans, credit cards, education loans and other asset types. (3) Includes publicly-traded agency pass-through securities and collateralized mortgage obligations. (4) Represents the amount of OTTI losses in “Accumulated other comprehensive income (loss)” (“AOCI”), which were not included in earnings. Amount excludes $686 million of net unrealized gains on impaired available-for-sale securities and $1 million of net unrealized gains on impaired held-to-maturity securities relating to changes in the value of such securities subsequent to the impairment measurement date. (5) Excludes notes with amortized cost of $4,165 million (fair value, $4,165 million ) which have been offset with the associated payables under a netting agreement. December 31, 2015 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value OTTI in AOCI(4) (in millions) Fixed maturities, available-for-sale U.S. Treasury securities and obligations of U.S. government authorities and agencies $ 14,992 $ 3,544 $ 19 $ 18,517 $ 0 Obligations of U.S. states and their political subdivisions 8,089 747 41 8,795 0 Foreign government bonds 71,849 12,011 147 83,713 1 U.S. corporate public securities 70,979 6,344 1,955 75,368 (3 ) U.S. corporate private securities(1) 28,525 2,278 359 30,444 0 Foreign corporate public securities 26,354 2,821 621 28,554 0 Foreign corporate private securities 19,393 739 994 19,138 0 Asset-backed securities(2) 10,121 226 121 10,226 (452 ) Commercial mortgage-backed securities 10,337 195 70 10,462 (1 ) Residential mortgage-backed securities(3) 4,777 335 6 5,106 (4 ) Total fixed maturities, available-for-sale(1) $ 265,416 $ 29,240 $ 4,333 $ 290,323 $ (459 ) Equity securities, available-for-sale $ 6,847 $ 2,570 $ 143 $ 9,274 December 31, 2015 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (in millions) Fixed maturities, held-to-maturity Foreign government bonds $ 816 $ 196 $ 0 $ 1,012 Foreign corporate public securities 625 62 0 687 Foreign corporate private securities(5) 78 4 0 82 Commercial mortgage-backed securities 33 1 0 34 Residential mortgage-backed securities(3) 756 53 0 809 Total fixed maturities, held-to-maturity(5) $ 2,308 $ 316 $ 0 $ 2,624 __________ (1) Excludes notes with amortized cost of $1,050 million (fair value, $1,039 million ) which have been offset with the associated payables under a netting agreement. (2) Includes credit-tranched securities collateralized by sub-prime mortgages, auto loans, credit cards, education loans and other asset types. (3) Includes publicly-traded agency pass-through securities and collateralized mortgage obligations. (4) Represents the amount of OTTI losses in AOCI, which were not included in earnings. Amount excludes $693 million of net unrealized gains on impaired available-for-sale securities and less than $1 million of net unrealized gains on impaired held-to-maturity securities relating to changes in the value of such securities subsequent to the impairment measurement date. (5) Excludes notes with amortized cost of $3,850 million (fair value, $4,081 million ) which have been offset with the associated payables under a netting agreement. The following tables show the fair value and gross unrealized losses aggregated by investment category and length of time that individual fixed maturity securities and equity securities have been in a continuous unrealized loss position, as of the dates indicated: September 30, 2016 Less than Twelve months Total Fair Gross Fair Gross Fair Gross (in millions) Fixed maturities(1) U.S. Treasury securities and obligations of U.S. government authorities and agencies $ 2,818 $ 37 $ 0 $ 0 $ 2,818 $ 37 Obligations of U.S. states and their political subdivisions 80 1 21 3 101 4 Foreign government bonds 2,133 112 296 18 2,429 130 U.S. corporate public securities 5,907 201 3,237 288 9,144 489 U.S. corporate private securities 1,926 114 1,482 112 3,408 226 Foreign corporate public securities 1,264 41 1,230 114 2,494 155 Foreign corporate private securities 2,692 183 4,773 433 7,465 616 Asset-backed securities 1,287 68 2,712 53 3,999 121 Commercial mortgage-backed securities 1,417 14 148 1 1,565 15 Residential mortgage-backed securities 64 2 89 1 153 3 Total $ 19,588 $ 773 $ 13,988 $ 1,023 $ 33,576 $ 1,796 Equity securities, available-for-sale $ 699 $ 42 $ 12 $ 1 $ 711 $ 43 __________ (1) Includes $14 million of fair value and less than $1 million of gross unrealized losses at September 30, 2016 , on securities classified as held-to-maturity, which is not reflected in AOCI. December 31, 2015 Less than Twelve months Total Fair Gross Fair Gross Fair Gross (in millions) Fixed maturities(1) U.S. Treasury securities and obligations of U.S. government authorities and agencies $ 3,068 $ 19 $ 0 $ 0 $ 3,068 $ 19 Obligations of U.S. states and their political subdivisions 1,391 40 7 1 1,398 41 Foreign government bonds 1,925 82 411 65 2,336 147 U.S. corporate public securities 24,642 1,396 3,455 559 28,097 1,955 U.S. corporate private securities 6,996 266 802 93 7,798 359 Foreign corporate public securities 5,985 288 1,584 333 7,569 621 Foreign corporate private securities 6,199 340 3,917 654 10,116 994 Asset-backed securities 4,342 33 3,138 88 7,480 121 Commercial mortgage-backed securities 3,888 63 473 7 4,361 70 Residential mortgage-backed securities 558 4 119 2 677 6 Total $ 58,994 $ 2,531 $ 13,906 $ 1,802 $ 72,900 $ 4,333 Equity securities, available-for-sale $ 1,862 $ 142 $ 11 $ 1 $ 1,873 $ 143 __________ (1) Includes $0 million of fair value and $0 million of gross unrealized losses at December 31, 2015 , on securities classified as held-to-maturity, which is not reflected in AOCI. The gross unrealized losses on fixed maturity securities at September 30, 2016 and December 31, 2015 , were composed of $1,324 million and $3,750 million , respectively, related to high or highest quality securities based on the National Association of Insurance Commissioners (“NAIC”) or equivalent rating and $472 million and $583 million , respectively, related to other than high or highest quality securities based on NAIC or equivalent rating. At September 30, 2016 , the $1,023 million of gross unrealized losses of twelve months or more were concentrated in the energy, utility and capital goods sectors of the Company’s corporate securities. At December 31, 2015 , the $1,802 million of gross unrealized losses of twelve months or more were concentrated in the energy, consumer non-cyclical and basic industry sectors of the Company’s corporate securities. In accordance with its policy described in Note 2 to the Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2015 , the Company concluded that an adjustment to earnings for OTTI for these securities was not warranted at September 30, 2016 or December 31, 2015 . These conclusions are based on a detailed analysis of the underlying credit and cash flows on each security. The gross unrealized losses are primarily attributable to general credit spread widening and foreign currency exchange rate movements. At September 30, 2016 , the Company does not intend to sell these securities, and it is not more likely than not that the Company will be required to sell these securities before the anticipated recovery of the remaining amortized cost basis. At September 30, 2016 , $9 million of the gross unrealized losses on equity securities represented declines in value of greater than 20%, approximately all of which had been in that position for less than six months. At December 31, 2015 , $19 million of the gross unrealized losses on equity securities represented declines in value of greater than 20%, all of which had been in that position for less than six months. In accordance with its policy described in Note 2 to the Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2015 , the Company concluded that an adjustment for OTTI for these equity securities was not warranted at September 30, 2016 or December 31, 2015 . The amortized cost and fair value of fixed maturities by contractual maturities at September 30, 2016 , are as follows: Available-for-Sale Held-to-Maturity Amortized Cost Fair Value Amortized Cost Fair Value (in millions) Due in one year or less $ 10,680 $ 11,142 $ 13 $ 13 Due after one year through five years 47,613 52,034 191 203 Due after five years through ten years 61,574 67,850 610 685 Due after ten years(1) 151,316 184,694 961 1,302 Asset-backed securities 10,318 10,375 0 0 Commercial mortgage-backed securities 11,912 12,501 1 1 Residential mortgage-backed securities 4,332 4,648 695 752 Total $ 297,745 $ 343,244 $ 2,471 $ 2,956 __________ (1) Excludes available-for-sale notes with amortized cost of $1,127 million (fair value, $1,127 million ) and held-to-maturity notes with amortized cost of $4,165 million (fair value, $4,165 million ), which have been offset with the associated payables under a netting agreement. Actual maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations. Asset-backed, commercial mortgage-backed and residential mortgage-backed securities are shown separately in the table above, as they are not due at a single maturity date. The following table depicts the sources of fixed maturity and equity security proceeds and related investment gains (losses), as well as losses on impairments of both fixed maturities and equity securities: Three Months Ended September 30, Nine Months Ended September 30, 2016 2015 2016 2015 (in millions) Fixed maturities, available-for-sale Proceeds from sales(1) $ 7,585 $ 6,016 $ 21,939 $ 21,059 Proceeds from maturities/repayments(1) 4,960 4,496 14,583 14,209 Gross investment gains from sales, prepayments and maturities 440 427 1,234 1,401 Gross investment losses from sales and maturities (46 ) (73 ) (343 ) (170 ) Fixed maturities, held-to-maturity Gross investment gains from prepayments $ 0 $ 0 $ 0 $ 0 Proceeds from maturities/repayments 83 58 208 181 Equity securities, available-for-sale Proceeds from sales $ 978 $ 1,181 $ 2,815 $ 3,734 Gross investment gains from sales 177 167 425 594 Gross investment losses from sales (30 ) (61 ) (137 ) (123 ) Fixed maturity and equity security impairments Net writedowns for other-than-temporary impairment losses on fixed maturities recognized in earnings(2) $ (29 ) $ (73 ) $ (166 ) $ (110 ) Writedowns for impairments on equity securities (23 ) (60 ) (65 ) (77 ) __________ (1) Includes $122 million and $267 million of non-cash related proceeds for the nine months ended September 30, 2016 and 2015 , respectively. (2) Excludes the portion of OTTI recorded in “Other comprehensive income (loss),” (“OCI”) representing any difference between the fair value of the impaired debt security and the net present value of its projected future cash flows at the time of impairment. As discussed in Note 2 to the Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2015 , a portion of certain OTTI losses on fixed maturity securities is recognized in OCI. For these securities, the net amount recognized in earnings (“credit loss impairments”) represents the difference between the amortized cost of the security and the net present value of its projected future cash flows discounted at the effective interest rate implicit in the debt security prior to impairment. Any remaining difference between the fair value and amortized cost is recognized in OCI. The following tables set forth the amount of pre-tax credit loss impairments on fixed maturity securities held by the Company as of the dates indicated, for which a portion of the OTTI loss was recognized in OCI, and the corresponding changes in such amounts: Three Months Ended September 30, 2016 Nine Months Ended September 30, 2016 (in millions) Balance, beginning of period $ 424 $ 532 Credit loss impairments previously recognized on securities which matured, paid down, prepaid or were sold during the period (76 ) (217 ) Credit loss impairments previously recognized on securities impaired to fair value during the period(1) 0 (2 ) Credit loss impairments recognized in the current period on securities not previously impaired 0 27 Additional credit loss impairments recognized in the current period on securities previously impaired 0 0 Increases due to the passage of time on previously recorded credit losses 5 17 Accretion of credit loss impairments previously recognized due to an increase in cash flows expected to be collected (2 ) (6 ) Balance, end of period $ 351 $ 351 Three Months Ended September 30, 2015 Nine Months Ended September 30, 2015 (in millions) Balance, beginning of period $ 751 $ 781 Credit loss impairments previously recognized on securities which matured, paid down, prepaid or were sold during the period (187 ) (215 ) Credit loss impairments previously recognized on securities impaired to fair value during the period(1) (6 ) (19 ) Credit loss impairments recognized in the current period on securities not previously impaired 0 3 Additional credit loss impairments recognized in the current period on securities previously impaired 1 2 Increases due to the passage of time on previously recorded credit losses 1 14 Accretion of credit loss impairments previously recognized due to an increase in cash flows expected to be collected (3 ) (9 ) Balance, end of period $ 557 $ 557 __________ (1) Represents circumstances where the Company determined in the current period that it intends to sell the security or it is more likely than not that it will be required to sell the security before recovery of the security’s amortized cost. Trading Account Assets Supporting Insurance Liabilities The following table sets forth the composition of “Trading account assets supporting insurance liabilities” as of the dates indicated: September 30, 2016 December 31, 2015 Amortized Cost Fair Value Amortized Cost Fair Value (in millions) Short-term investments and cash equivalents $ 908 $ 908 $ 765 $ 765 Fixed maturities: Corporate securities 13,296 13,773 12,797 12,851 Commercial mortgage-backed securities 1,873 1,952 1,860 1,862 Residential mortgage-backed securities(1) 1,217 1,261 1,411 1,428 Asset-backed securities(2) 1,311 1,327 1,295 1,299 Foreign government bonds 784 813 680 694 U.S. government authorities and agencies and obligations of U.S. states 399 449 326 369 Total fixed maturities 18,880 19,575 18,369 18,503 Equity securities 1,223 1,345 1,030 1,254 Total trading account assets supporting insurance liabilities $ 21,011 $ 21,828 $ 20,164 $ 20,522 __________ (1) Includes publicly-traded agency pass-through securities and collateralized mortgage obligations. (2) Includes credit-tranched securities collateralized by sub-prime mortgages, auto loans, credit cards, education loans and other asset types. The net change in unrealized gains (losses) from trading account assets supporting insurance liabilities still held at period end, recorded within “Other income,” was $84 million and $(251) million during the three months ended September 30, 2016 and 2015 , respectively, and $459 million and $(517) million during the nine months ended September 30, 2016 and 2015 , respectively. Other Trading Account Assets The following table sets forth the composition of the “Other trading account assets” as of the dates indicated: September 30, 2016 December 31, 2015 Amortized Cost Fair Value Amortized Cost Fair Value (in millions) Short-term investments and cash equivalents $ 27 $ 27 $ 26 $ 26 Fixed maturities 4,783 4,635 11,132 10,764 Equity securities 867 950 1,006 1,098 Other 5 7 12 15 Subtotal $ 5,682 5,619 $ 12,176 11,903 Derivative instruments 1,940 2,555 Total other trading account assets $ 7,559 $ 14,458 The net change in unrealized gains (losses) from other trading account assets, excluding derivative instruments, still held at period end, recorded within “Other income,” was $49 million and $(227) million during the three months ended September 30, 2016 and 2015 , respectively, and $210 million and $(219) million during the nine months ended September 30, 2016 and 2015 , respectively. Concentrations of Financial Instruments The Company monitors its concentrations of financial instruments and mitigates credit risk by maintaining a diversified investment portfolio which limits exposure to any one issuer. As of both September 30, 2016 and December 31, 2015 , the Company’s exposure to concentrations of credit risk of single issuers greater than 10% of the Company’s stockholders’ equity included securities of the U.S. government and certain U.S. government agencies and certain securities guaranteed by the U.S. government, as well as the securities disclosed below . September 30, 2016 December 31, 2015 Amortized Cost Fair Value Amortized Cost Fair Value (in millions) Investments in Japanese government and government agency securities: Fixed maturities, available-for-sale $ 65,711 $ 82,317 $ 53,851 $ 61,911 Fixed maturities, held-to-maturity 942 1,276 796 988 Trading account assets supporting insurance liabilities 585 613 492 502 Other trading account assets 17 17 33 33 Total $ 67,255 $ 84,223 $ 55,172 $ 63,434 September 30, 2016 December 31, 2015 Amortized Cost Fair Value Amortized Cost Fair Value (in millions) Investments in South Korean government and government agency securities: Fixed maturities, available-for-sale $ 8,165 $ 11,308 $ 7,191 $ 9,233 Fixed maturities, held-to-maturity 0 0 0 0 Trading account assets supporting insurance liabilities 44 45 44 44 Other trading account assets 0 0 0 0 Total $ 8,209 $ 11,353 $ 7,235 $ 9,277 Commercial Mortgage and Other Loans The Company’s commercial mortgage and other loans are comprised as follows, as of the dates indicated: September 30, 2016 December 31, 2015 Amount (in millions) % of Total Amount (in millions) % of Total Commercial mortgage and agricultural property loans by property type: Office $ 12,137 23.7 % $ 11,226 22.9 % Retail 8,593 16.7 8,917 18.2 Apartments/Multi-Family 13,247 25.8 12,034 24.5 Industrial 7,806 15.2 7,775 15.9 Hospitality 2,384 4.7 2,513 5.1 Other 4,266 8.3 3,722 7.6 Total commercial mortgage loans 48,433 94.4 46,187 94.2 Agricultural property loans 2,888 5.6 2,859 5.8 Total commercial mortgage and agricultural property loans by property type 51,321 100.0 % 49,046 100.0 % Valuation allowance (99 ) (99 ) Total net commercial mortgage and agricultural property loans by property type 51,222 48,947 Other loans: Uncollateralized loans 748 1,012 Residential property loans 301 301 Other collateralized loans 11 312 Total other loans 1,060 1,625 Valuation allowance (9 ) (13 ) Total net other loans 1,051 1,612 Total commercial mortgage and other loans(1) $ 52,273 $ 50,559 __________ (1) Includes loans held at fair value. The commercial mortgage and agricultural property loans are geographically dispersed throughout the United States (with the largest concentrations in California (26%) , New York (9%) and Texas (9%) ) and include loans secured by properties in Europe (4%) and Asia (1%) at September 30, 2016 . Activity in the allowance for credit losses for all commercial mortgage and other loans, as of the dates indicated, is as follows: September 30, 2016 Commercial Mortgage Loans Agricultural Property Loans Residential Property Loans Other Collateralized Loans Uncollateralized Loans Total (in millions) Allowance for credit losses, beginning of year $ 97 $ 2 $ 3 $ 0 $ 10 $ 112 Addition to (release of) allowance for losses 0 0 (1 ) 0 (5 ) (6 ) Charge-offs, net of recoveries 0 0 0 0 0 0 Change in foreign exchange 0 0 1 0 1 2 Total ending balance $ 97 $ 2 $ 3 $ 0 $ 6 $ 108 December 31, 2015 Commercial Mortgage Loans Agricultural Property Loans Residential Property Loans Other Collateralized Loans Uncollateralized Loans Total (in millions) Allowance for credit losses, beginning of year $ 104 $ 1 $ 5 $ 0 $ 9 $ 119 Addition to (release of) allowance for losses (7 ) 1 (2 ) 0 1 (7 ) Charge-offs, net of recoveries 0 0 0 0 0 0 Change in foreign exchange 0 0 0 0 0 0 Total ending balance $ 97 $ 2 $ 3 $ 0 $ 10 $ 112 The following tables set forth the allowance for credit losses and the recorded investment in commercial mortgage and other loans as of the dates indicated: September 30, 2016 Commercial Mortgage Loans Agricultural Property Loans Residential Property Loans Other Collateralized Loans Uncollateralized Loans Total (in millions) Allowance for Credit Losses: Individually evaluated for impairment $ 7 $ 0 $ 0 $ 0 $ 0 $ 7 Collectively evaluated for impairment 90 2 3 0 6 101 Loans acquired with deteriorated credit quality 0 0 0 0 0 0 Total ending balance $ 97 $ 2 $ 3 $ 0 $ 6 $ 108 Recorded Investment(1): Gross of reserves: individually evaluated for impairment $ 117 $ 29 $ 0 $ 0 $ 2 $ 148 Gross of reserves: collectively evaluated for impairment 48,316 2,859 301 11 746 52,233 Gross of reserves: loans acquired with deteriorated credit quality 0 0 0 0 0 0 Total ending balance, gross of reserves $ 48,433 $ 2,888 $ 301 $ 11 $ 748 $ 52,381 __________ (1) Recorded investment reflects the carrying value gross of related allowance. December 31, 2015 Commercial Mortgage Loans Agricultural Property Loans Residential Property Loans Other Collateralized Loans Uncollateralized Loans Total (in millions) Allowance for Credit Losses: Individually evaluated for impairment $ 1 $ 0 $ 0 $ 0 $ 0 $ 1 Collectively evaluated for impairment 96 2 3 0 10 111 Loans acquired with deteriorated credit quality 0 0 0 0 0 0 Total ending balance $ 97 $ 2 $ 3 $ 0 $ 10 $ 112 Recorded Investment(1): Gross of reserves: individually evaluated for impairment $ 111 $ 8 $ 0 $ 0 $ 2 $ 121 Gross of reserves: collectively evaluated for impairment 46,076 2,851 301 312 1,010 50,550 Gross of reserves: loans acquired with deteriorated credit quality 0 0 0 0 0 0 Total ending balance, gross of reserves $ 46,187 $ 2,859 $ 301 $ 312 $ 1,012 $ 50,671 __________ (1) Recorded investment reflects the carrying value gross of related allowance. Impaired loans include those loans for which it is probable that all amounts due will not be collected according to the contractual terms of the loan agreement. Impaired commercial mortgage and other loans identified in management’s specific review of probable loan losses and the related allowance for losses, as of the dates indicated, are as follows: September 30, 2016 Recorded Investment(1) Unpaid Principal Balance Related Allowance Average Recorded Investment Before Allowance(2) Interest Income Recognized(3) (in millions) With no related allowance recorded: Commercial mortgage loans $ 0 $ 0 $ 0 $ 0 $ 0 Agricultural property loans 0 0 0 0 0 Residential property loans 0 0 0 0 0 Other collateralized loans 0 0 0 0 0 Uncollateralized loans 0 2 0 0 0 Total with no related allowance $ 0 $ 2 $ 0 $ 0 $ 0 With an allowance recorded: Commercial mortgage loans $ 51 $ 51 $ 7 $ 27 $ 2 Agricultural property loans 0 0 0 0 0 Residential property loans 0 0 0 0 0 Other collateralized loans 0 0 0 0 0 Uncollateralized loans 0 0 0 0 0 Total with related allowance $ 51 $ 51 $ 7 $ 27 $ 2 Total: Commercial mortgage loans $ 51 $ 51 $ 7 $ 27 $ 2 Agricultural property loans 0 0 0 0 0 Residential property loans 0 0 0 0 0 Other collateralized loans 0 0 0 0 0 Uncollateralized loans 0 2 0 0 0 Total $ 51 $ 53 $ 7 $ 27 $ 2 __________ (1) Recorded investment reflects the carrying value gross of related allowance. (2) Average recorded investment represents the average of the beginning-of-period and all subsequent quarterly end-of-period balances. (3) The interest income recognized is for the year-to-date income regardless of when the impairments occurred. December 31, 2015 Recorded Investment(1) Unpaid Principal Balance Related Allowance Average Recorded Investment Before Allowance(2) Interest Income Recognized(3) (in millions) With no related allowance recorded: Commercial mortgage loans $ 0 $ 0 $ 0 $ 0 $ 0 Agricultural property loans 0 0 0 2 0 Residential property loans 0 0 0 0 0 Other collateralized loans 0 0 0 0 0 Uncollateralized loans 0 1 0 0 0 Total with no related allowance $ 0 $ 1 $ 0 $ 2 $ 0 With an allowance recorded: Commercial mortgage loans $ 1 $ 1 $ 1 $ 52 $ 3 Agricultural property loans 0 0 0 0 0 Residential property loans 0 0 0 0 0 Other collateralized loans 0 0 0 0 0 Uncollateralized loans 0 0 0 0 0 Total with related allowance $ 1 $ 1 $ 1 $ 52 $ 3 Total: Commercial mortgage loans $ 1 $ 1 $ 1 $ 52 $ 3 Agricultural property loans 0 0 0 2 0 Residential property loans 0 0 0 0 0 Other collateralized loans 0 0 0 0 0 Uncollateralized loans 0 1 0 0 0 Total $ 1 $ 2 $ 1 $ 54 $ 3 __________ (1) Recorded investment reflects the carrying value gross of related allowance. (2) Average recorded investment represents the average of the beginning-of-period and all subsequent quarterly end-of-period balances. (3) The interest income recognized is for the year-to-date income regardless of when the impairments occurred. The net carrying value of commercial and other loans held for sale by the Company as of September 30, 2016 and December 31, 2015 , was $572 million and $274 million , respectively. For all of these loans, the Company pre-arranges that it will sell the loan to an investor. As of both September 30, 2016 and December 31, 2015 , all of the Company’s commercial and other loans held for sale were collateralized, with collateral primarily consisting of apartment complexes. The following tables set forth certain key credit quality indicators as of September 30, 2016 , based upon the recorded investment gross of allowance for credit losses. Commercial mortgage loans Debt Service Coverage Ratio—September 30, 2016 Greater than 1.2X 1.0X to <1.2X Less than 1.0X Total (in millions) Loan-to-Value Ratio 0%-59.99% $ 26,467 $ 411 $ 306 $ 27,184 60%-69.99% 13,954 413 102 14,469 70%-79.99% 6,048 237 101 6,386 Greater than 80% 226 50 118 394 Total commercial mortgage loans $ 46,695 $ 1,111 $ 627 $ 48,433 Agricultural property loans Debt Service Coverage Ratio—September 30, 2016 Greater than 1.2X 1.0X to <1.2X Less than 1.0X Total (in millions) Loan-to-Value Ratio 0%-59.99% $ 2,643 $ 124 $ 17 $ 2,784 60%-69.99% 104 0 0 104 70%-79.99% 0 0 0 0 Greater than 80% 0 0 0 0 Total agricultural property loans $ 2,747 $ 124 $ 17 $ 2,888 Total commercial mortgage and agricultural property loans Debt Service Coverage Ratio—September 30, 2016 Greater than 1.0X to <1.2X Less than Total (in millions) Loan-to-Value Ratio 0%-59.99% $ 29,110 $ 535 $ 323 $ 29,968 60%-69.99% 14,058 413 102 14,573 70%-79.99% 6,048 237 101 6,386 Greater than 80% 226 50 118 394 Total commercial mortgage and agricultural property loans $ 49,442 $ 1,235 $ 644 $ 51,321 The following tables set forth certain key credit quality indicators as of December 31, 2015 , based upon the recorded investment gross of allowance for credit losses. Commercial mortgage loans Debt Service Coverage Ratio—December 31, 2015 Greater than 1.2X 1.0X to <1.2X Less than 1.0X Total (in millions) Loan-to-Value Ratio 0%-59.99% $ 25,978 $ 515 $ 207 $ 26,700 60%-69.99% 12,191 395 234 12,820 70%-79.99% 5,668 500 97 6,265 Greater than 80% 119 151 132 402 Total commercial mortgage loans $ 43,956 $ 1,561 $ 670 $ 46,187 Agricultural property loans Debt Service Coverage Ratio—December 31, 2015 Greater than 1.2X 1.0X to <1.2X Less than 1.0X Total (in millions) Loan-to-Value Ratio 0%-59.99% $ 2,587 $ 84 $ 3 $ 2,674 60%-69.99% 185 0 0 185 70%-79.99% 0 0 0 0 Greater than 80% 0 0 0 0 Total agricultural property loans $ 2,772 $ 84 $ 3 $ 2,859 Total commercial mortgage and agricultural property loans Debt Service Coverage Ratio—December 31, 2015 Greater than 1.2X 1.0X to <1.2X Less than 1.0X Total (in millions) Loan-to-Value Ratio 0%-59.99% $ 28,565 $ 599 $ 210 $ 29,374 60%-69.99% 12,376 395 234 13,005 70%-79.99% 5,668 500 97 6,265 Greater than 80% 119 151 132 402 Total commercial mortgage and agricultural property loans $ 46,728 $ 1,645 $ 673 $ 49,046 The following tables provide an aging of past due commercial mortgage and other loans as of the dates indicated, based upon the recorded investment gross of allowance for credit losses, as well as the amount of commercial mortgage loans on nonaccrual status as of the dates indicated. September 30, 2016 Current 30-59 Days Past Due 60-89 Days Past Due Greater Than 90 Days Past Due Total Past Due Total Commercial Mortgage and Other Loans Non Accrual Status (in millions) Commercial mortgage loans $ 48,429 $ 0 $ 0 $ 4 $ 4 $ 48,433 $ 52 Agricultural property loans 2,886 0 0 2 2 2,888 2 Residential property loans 288 6 2 5 13 301 5 Other collateralized loans 11 0 0 0 0 11 0 Uncollateralized loans 748 0 0 0 0 748 0 Total $ 52,362 $ 6 $ 2 $ 11 $ 19 $ 52,381 $ 59 December 31, 2015 Current 30-59 Days Past Due 60-89 Days Past Due Greater Than 90 Days Past Due Total Past Due Total Commercial Mortgage and Other Loans Non Accrual Status (in millions) Commercial mortgage loans $ 46,187 $ 0 $ 0 $ 0 $ 0 $ 46,187 $ 53 Agricultural property loans 2,856 2 0 1 3 2,859 1 Residential property loans 288 7 0 6 13 301 6 Other collateralized loans 312 0 0 0 0 312 0 Uncollateralized loans 1,012 0 0 0 0 1,012 0 Total $ 50,655 $ 9 $ 0 $ 7 $ 16 $ 50,671 $ 60 See Note 2 to the Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2015 , for further discussion regarding nonaccrual status loans. For both the three and nine months ended September 30, 2016 , there were no commercial mortgage and other loans acquired, other than those through direct origination, and there were no commercial mortgage and other loans sold, other than those classified as held-for-sale, respectively. For the three and nine months ended September 30, 2015 , there were $145 million and $198 million , respectively, of commercial mortgage and other loans acquired, other than those through direct origination and there were $0 million and $18 million , respectively, of commercial mortgage and other loans sold, other than those classified as held-for-sale. The Company’s commercial mortgage and other loans may occasionally be involved in a troubled debt restructuring. As of September 30, 2016 and December 31, 2015 , the Company had no significant commitments to borrowers that have been involved in a troubled debt restructuring. During the three and nine months ended September 30, 2016 and 2015 , there were no new troubled debt restructurings related to commercial mortgage and other loans and no payment defaults on commercial mortgage and other loans that were modified as a troubled debt restructuring within the twelve months preceding. For additional information relating to the accounting for troubled debt re |