MetLife, Inc. Notes to the Consolidated Financial Statements — (Continued) Nonrecurring Fair Value Measurements 159 MetLife, Inc. Residential Mortgage Loans Held-for-Sale (1) Securitized Reverse Residential Mortgage Loans (2) Assets and Liabilities Held by CSEs (3) December 31, December 31, December 31, 2012 2011 2012 2011 2012 2011 Assets: (In millions) Unpaid principal balance .................................................... $80 $2,935 $— $6,914 $2,539 $3,019 Difference between estimated fair value and unpaid principal balance ................. (31) 129 — 738 127 119 Carrying value at estimated fair value ......................................... $49 $3,064 $— $7,652 $2,666 $3,138 Loans in non-accrual status .................................................. $ 3 $ 3 $— $ — $ — $ — Loans more than 90 days past due ............................................ $23 $ 20 $— $ 59 $ — $ — Loans in non-accrual status or more than 90 days past due, or both — difference between aggregate estimated fair value and unpaid principal balance ....................... $(14) $ (2) $— $ — $ — $ — Liabilities: Contractual principal balance ................................................. $— $6,914 $2,430 $2,954 Difference between estimated fair value and contractual principal balance .............. — 712 97 114 Carrying value at estimated fair value ......................................... $— $7,626 $2,527 $3,068 Years Ended December 31, 2012 2011 2010 (In millions) Instrument-specific credit risk based on changes in credit spreads for non-agency loans and adjustments in individual loan quality ............................................................................................. $(1) $ (3) $ (1) Other changes in estimated fair value ....................................................................... 68 511 487 Total gains (losses) recognized in other revenues ............................................................ $67 $508 $486 Years Ended December 31, 2012 2011 2010 Carrying Value Prior to Measurement Carrying Value After Measurement Gains (Losses) Carrying Value Prior to Measurement Carrying Value After Measurement Gains (Losses) Carrying Value Prior to Measurement Carrying Value After Measurement Gains (Losses) (In millions) Mortgage loans: (1) ................... Held-for-investment ................. $ 439 $428 $ (11) $166 $151 $(15) $179 $164 $(15) Held-for-sale ....................... $ 350 $319 $ (31) $ 61 $ 58 $ (3) $ 35 $ 33 $ (2) Other limited partnership interests (2) ...... $ 87 $ 54 $ (33) $ 18 $ 13 $ (5) $ 35 $ 23 $(12) Real estate joint ventures (3) ............. $ 16 $ 10 $ (6) $ — $ — $— $ 33 $ 8 $(25) Goodwill (4) ......................... $1,868 $ — $(1,868) $ 65 $ — $(65) $ — $ — $ — Other assets (5) ...................... $ 109 $ 32 $ (77) $ — $ — $ — $ — $ — $ — The following table presents information for assets measured at estimated fair value on a nonrecurring basis during the periods presented; that is, they are not measured at fair value on a recurring basis but are subject to fair value adjustments only in certain circumstances (for example, when there is evidence of impairment). The estimated fair values for these assets were determined using significant unobservable inputs (Level 3). (1) The carrying value after measurement has been adjusted for the excess of the carrying value prior to measurement over the estimated fair value. Estimated fair values for impaired mortgage loans are based on independent broker quotations or valuation models using unobservable inputs or, if the loans are in foreclosure or are otherwise determined to be collateral dependent, are based on the estimated fair value of the underlying collateral or the present value of the expected future cash flows. (3) Assets and liabilities held by CSEs are comprised of the commercial mortgage loans and long-term debt held by CSEs. Gains and losses from initial measurement, subsequent changes in estimated fair value and gains or losses on sales of these assets and liabilities are recognized in net investment gains (losses). Interest income on commercial mortgage loans held by CSEs is recognized in net investment income. Interest expense from long-term debt of CSEs is recognized in other expenses. (2) Gains and losses from initial measurement and subsequent changes in estimated fair value are recognized in other revenues for securitized reverse residential mortgage loans and related liabilities. (1) Interest income on residential mortgage loans held-for-sale is recorded based on the stated rate of the loan and is recorded in net investment income. Gains and losses from initial measurement, subsequent changes in estimated fair value and gains or losses on sales are recognized in other revenues. Such changes in estimated fair value for these loans were due to the following: