NOTE 10 – COMMITMENTS AND CONTINGENCIES

Environmental Remediation Liabilities

We record a liability for environmental remediation when such liability becomes probable and the costs or damages can be reasonably estimated. We accrue environmental remediation costs, on an undiscounted basis, associated with identified sites where an assessment has indicated that cleanup costs are probable and can be reasonably estimated, but the timing of such payments is not fixed and determinable. Such accruals are based on currently available information, estimated timing of remedial actions, existing technology, and enacted laws and regulations. The liability for environmental remediation is included on the Consolidated Balance Sheets in current liabilities within Accrued liabilities and in noncurrent liabilities within Other liabilities.

At December 31, 2017 and 2016, the total environmental remediation liabilities recorded were $30.8 million and $30.9 million of which $5.7 million and $2.4 million, respectively, were presented in Accrued liabilities on the Consolidated Balance Sheets, respectively. We project payments over approximately 30 years.

For the year ended December 31, 2017, we recorded an environmental liability of $2.0 million related to a portion of a hazardous waste facility in Mexico. We continue to assess the level of remediation, as well as other potentially responsible parties, and will adjust our estimate in the future as appropriate.

Operating Lease Commitments

We lease various plant equipment, office furniture and equipment, motor vehicles, office and warehouse space, and landfills under operating lease agreements, which expire at various dates with the latest maturity in 2043. The leases for most of the properties contain renewal provisions.

During the years ended December 31, 2017, 2016 and 2015, rent expense was $186.2 million, $181.6 million, and $139.0 million, respectively, included within COR and SG&A on the Consolidated Statements of Income.

Minimum future rental payments under non-cancelable operating leases that have initial or remaining terms in excess of one year as of December 31, 2017 for each of the next five years and in the aggregate are as follows:

In millions
2018	$	145.9
2019		118.2
2020		95.0
2021		70.7
2022		44.4
Thereafter		86.9
	$	561.1

Asset Retirement Obligations

We have asset retirement obligations that we are required to perform under law or contract once an asset is permanently taken out of service. Most of these obligations are not expected to be paid until many years in the future and are expected to be funded from general company resources at the time of removal.

At December 31, 2017 and 2016, the total asset retirement obligation liabilities recorded were $18.2 million and $10.1 million, respectively, and were included in noncurrent liabilities within Other liabilities.

Unconditional Purchase Commitments

The Company has entered into non-cancelable arrangements with third-parties, primarily related to information technology products and services. As of December 31, 2017, future payments under these contractual obligations, not recognized on the Consolidated Balance Sheets, were as follows:

In millions
2018	$	37.1
2019		16.8
2020		15.3
2021		1.3
2022		0.6
Thereafter		-
	$	71.1