MetLife, Inc. Notes to the Consolidated Financial Statements — (Continued) Short-term Debt Short-term debt with maturities of one year or less was as follows: December 31, 2012 2011 (In millions) Commercial paper ..................................................................................... $ 100 $ 101 MetLife Bank, N.A. - Advances agreements with the FHLB of NY ................................................. — 585 Total short-term debt ................................................................................... $ 100 $ 686 Average daily balance ................................................................................... $ 119 $ 447 Average days outstanding ............................................................................... 40days 19 days Borrower(s) Expiration Capacity Letter of Credit Issuances Drawdowns Unused Commitments (In millions) MetLife, Inc. and MetLife Funding, Inc. ............................ September 2017 (1) $1,000 $ 365 $— $ 635 MetLife, Inc. and MetLife Funding, Inc. ............................ August 2016 3,000 2,203 — 797 Total .................................................... $4,000 $2,568 $— $1,432 The unsecured credit facilities are used for general corporate purposes, to support the borrowers’ commercial paper programs and for the issuance of letters of credit. Total fees expensed associated with these credit facilities were $30 million, $35 million and $17 million for the years ended December 31, 2012, 2011 and 2010, respectively, and are included in other expenses. Information on these credit facilities at December 31, 2012 was as follows: (1) In September 2012, MetLife, Inc. and MetLife Funding, Inc. entered into a $1.0 billion five-year credit agreement which amended and restated the three-year agreement dated October 2010. All borrowings under the 2012 five-year credit agreement must be repaid by September 2017, except that letters of credit outstanding on that date may remain outstanding until no later than September 2018. MetLife, Inc. incurred costs of $4 million related to the amended and restated credit facility, which have been capitalized and included in other assets. These costs will be amortized over the remaining term of the amended and restated credit facility. The committed facilities are used for collateral for certain of the Company’s affiliated reinsurance liabilities. Total fees expensed associated with these committed facilities were $96 million, $93 million and $92 million for the years ended December 31, 2012, 2011 and 2010, respectively, and are included in other expenses. Information on these committed facilities at December 31, 2012 was as follows: The Company maintains unsecured credit facilities and committed facilities, which aggregated $4.0 billion and $12.4 billion, respectively, at December 31, 2012. When drawn upon, these facilities bear interest at varying rates in accordance with the respective agreements. Interest expense related to long-term and short-term debt included in other expenses was $871 million, $975 million and $815 million for the years ended December 31, 2012, 2011 and 2010, respectively. Such amounts do not include interest expense on collateral financing arrangements, junior subordinated debt securities, common equity units or long-term debt related to CSEs. See Notes 8, 13, 14 and 15. During the years ended December 31, 2012, 2011 and 2010, the weighted average interest rate on short-term debt was 0.17%, 0.33% and 0.35%, respectively. Interest Expense Credit and Committed Facilities Credit Facilities Committed Facilities MetLife, Inc. 166