factors , including the market price of our common stock , general economic and market conditions and applicable legal requirements . the repurchase program may be commenced , suspended or discontinued at any time . in fiscal 2019 , we repurchased approximately 2.1 million shares of our common stock for an aggregate cost of $ 88.6 million . in fiscal 2018 , we repurchased approximately 3.4 million shares of our common stock for an aggregate cost of $ 195.1 million . as of september 30 , 2019 , we had approximately 19.1 million shares of common stock available for repurchase under the program . we anticipate that we will be able to fund our capital expenditures , interest payments , dividends and stock repurchases , pension payments , working capital needs , note repurchases , restructuring activities , repayments of current portion of long-term debt and other corporate actions for the foreseeable future from cash generated from operations , borrowings under our credit facilities , proceeds from our a/r sales agreement , proceeds from the issuance of debt or equity securities or other additional long-term debt financing , including new or amended facilities . in addition , we continually review our capital structure and conditions in the private and public debt markets in order to optimize our mix of indebtedness . in connection with these reviews , we may seek to refinance existing indebtedness to extend maturities , reduce borrowing costs or otherwise improve the terms and composition of our indebtedness . contractual obligations we summarize our enforceable and legally binding contractual obligations at september 30 , 2019 , and the effect these obligations are expected to have on our liquidity and cash flow in future periods in the following table . certain amounts in this table are based on management 2019s estimates and assumptions about these obligations , including their duration , the possibility of renewal , anticipated actions by third parties and other factors , including estimated minimum pension plan contributions and estimated benefit payments related to postretirement obligations , supplemental retirement plans and deferred compensation plans . because these estimates and assumptions are subjective , the enforceable and legally binding obligations we actually pay in future periods may vary from those presented in the table. .
what percent of total payments are due within the next year ( 2020 ) ?
( 1 ) includes only principal payments owed on our debt assuming that all of our long-term debt will be held to maturity , excluding scheduled payments . we have excluded $ 163.5 million of fair value of debt step-up , deferred financing costs and unamortized bond discounts from the table to arrive at actual debt obligations . see 201cnote 13 . debt 201d of the notes to consolidated financial statements for information on the interest rates that apply to our various debt instruments . ( 2 ) see 201cnote 15 . operating leases 201d of the notes to consolidated financial statements for additional information . ( 3 ) the fair value step-up of $ 16.9 million is excluded . see 201cnote 13 . debt 2014 capital lease and other indebtedness 201d of the notes to consolidated financial statements for additional information . ( 4 ) purchase obligations include agreements to purchase goods or services that are enforceable and legally binding and that specify all significant terms , including : fixed or minimum quantities to be purchased ; fixed , minimum or variable price provision ; and the approximate timing of the transaction . purchase obligations exclude agreements that are cancelable without penalty . ( 5 ) we have included in the table future estimated minimum pension plan contributions and estimated benefit payments related to postretirement obligations , supplemental retirement plans and deferred compensation plans . our estimates are based on factors , such as discount rates and expected returns on plan assets . future contributions are subject to changes in our underfunded status based on factors such as investment performance , discount rates , returns on plan assets and changes in legislation . it is possible that our assumptions may change , actual market performance may vary or we may decide to contribute different amounts . we have excluded $ 237.2 million of multiemployer pension plan withdrawal liabilities recorded as of september 30 , 2019 , including our estimate of the accumulated funding deficiency , due to lack of .