Senior Secured Credit Facilities means the revolving credit facility and other credit facilities under the Credit Agreement, including any guarantees, collateral documents, instruments and agreements executed in connection therewith, and any amendments, supplements, modifications, extensions, renewals, restatements, refundings, refinancings or replacements thereof and any one or more indentures or credit facilities or commercial paper facilities with banks or other institutional lenders or investors that replace, refund, supplement or refinance any part of the loans, notes, other credit facilities or commitments thereunder, including any such replacement, refunding or refinancing facility or indenture that increases the amount borrowable thereunder or alters the maturity thereof (provided that such increase in borrowings is permitted under Section 4.09 hereof) or adds Restricted Subsidiaries as additional borrowers or guarantors thereunder and whether by the same or any other agent, trustee, lender or group of lenders or holders.