COMMITMENTS AND OFF BALANCE SHEET ARRANGEMENTS

Eastman's obligations are summarized in the following table.



(Dollars in millions)	Payments Due for
Period	Debt Securities		Credit Facilities and Other		Interest Payable		Purchase Obligations		Operating Leases		Other Liabilities		Total
2019	$	—	$	243	$	210	$	275	$	63	$	250	$	1,041
2020	250		50		194		227		51		79		851
2021	482		—		189		136		40		92		939
2022	739		—		176		87		29		99		1,130
2023	855		—		157		77		18		96		1,203
2024 and beyond	3,549		—		1,553		2,046		47		1,010		8,205
Total	$	5,875	$	293	$	2,479	$	2,848	$	248	$	1,626	$	13,369

Estimated future payments of debt securities assumes the repayment of principal upon stated maturity, and actual amounts and the timing of such payments may differ materially due to repayment or other changes in the terms of such debt prior to maturity.

Eastman had various purchase obligations at December 31, 2018 totaling approximately $2.8 billion over a period of approximately 30 years for materials, supplies, and energy incident to the ordinary conduct of business. The Company also had various lease commitments for property and equipment under noncancelable operating leases totaling $248 million over a period of approximately 40 years. Of the total lease commitments, approximately 50 percent relate to real property, including office space, storage facilities, and land; approximately 40 percent relate to railcars; and approximately 10 percent relate to machinery and equipment, including computer and communications equipment and production equipment. Rental expense, net of sublease income, was $103 million, $94 million, and $90 million in 2018, 2017, and 2016, respectively.

Amounts in other liabilities represent the current estimated cash payments required to be made by the Company primarily for pension and other postretirement benefits, environmental loss contingency reserves, accrued compensation benefits, uncertain tax liabilities, one-time transition tax on deferred foreign income under the Tax Reform Act, and commodity and foreign exchange hedging in the periods indicated. Due to uncertainties in the timing of the effective settlement of tax positions with respect to taxing authorities, management is unable to determine the timing of payments related to uncertain tax liabilities and these amounts are included in the "2024 and beyond" line item.

Guarantees

Eastman has operating leases with terms that require the Company to guarantee a portion of the residual value of the leased assets upon termination of the lease as well as other guarantees. Disclosures about each group of similar guarantees are provided below.

Residual Value Guarantees

The Company has operating leases with terms that require the Company to guarantee a portion of the residual value of the leased assets upon termination of the lease. These residual value guarantees totaled $68 million at December 31, 2018 and consist primarily of leases for railcars that will expire beginning in second quarter 2019. Residual guarantee payments that become probable and estimable are recognized as rent expense over the remaining life of the applicable lease. Management's current expectation is that the likelihood of material residual guarantee payments is remote.

Other Guarantees

Guarantees and claims also arise during the ordinary course of business from relationships with customers, suppliers, joint venture partners, and other parties when the Company undertakes an obligation to guarantee the performance of others if specified triggering events occur. Non-performance under a contract could trigger an obligation of the Company. The Company's current other guarantees include guarantees relating to intellectual property, environmental matters, and other indemnifications and have arisen through the normal course of business. The ultimate effect on future financial results is not subject to reasonable estimation because considerable uncertainty exists as to the final outcome of these claims, if they were to occur. These other guarantees have terms up to 30 years with maximum potential future payments of approximately $35 million in the aggregate, with none of these guarantees being individually significant to the Company's operating results, financial position, or liquidity. Management's current expectation is that future payment or performance related to non-performance under other guarantees is remote.

Other Off Balance Sheet Arrangements

The Company has off balance sheet uncommitted non-recourse factoring facilities that include customer specific receivables in the United States and Europe. The Company sells the receivables at face value, less a transaction fee, which substantially equals the carrying value and fair value with no gain or loss recognized. There is no continuing involvement with these receivables once sold and no credit loss exposure. The total amount of receivables sold during 2018 and 2017 were $169 million and $35 million, respectively.

In October 2018, Eastman added an uncommitted non-recourse factoring facility under which the Company sells undivided interests in certain receivables and provides servicing at market rates with no credit loss exposure. The Company sells the receivables at face value, less a transaction fee, which substantially equals the carrying value and fair value with no gain or loss recognized. The total amount of receivables sold during 2018 was $50 million.