Commitments and Contingencies

Insurance

We maintain general liability insurance with limits of $200.0 million per occurrence and in the aggregate, and property and rental value insurance coverage with limits of $2.0 billion per occurrence, with sub-limits for certain perils such as floods and earthquakes on each of our properties. We also maintain coverage for terrorist acts with limits of $2.0 billion per occurrence and in the aggregate, and $2.0 billion per occurrence and in the aggregate for nuclear, biological, chemical and radiological terrorism events, as defined by the Terrorism Risk Insurance Program Reauthorization Act, which expires in December 2020. Insurance premiums are charged directly to each of the properties and are included in "Property operating expenses" in the statement of operations.

We will continue to monitor the state of the insurance market and the scope and costs of coverage for acts of terrorism. We cannot anticipate what coverage will be available on commercially reasonable terms in the future. We are responsible for deductibles and losses in excess of the insurance coverage, which could be material.

Our debt, consisting of mortgage loans secured by our properties, revolving credit facility and unsecured term loans contain customary covenants requiring adequate insurance coverage. Although we believe that we currently have adequate insurance coverage, we may not be able to obtain an equivalent amount of coverage at reasonable costs in the future. If lenders insist on greater coverage than we are able to obtain, it could adversely affect the ability to finance or refinance our properties.

Construction Commitments

As of September 30, 2017, we have construction in progress that will require an additional $707.8 million to complete ($611.1 million related to our consolidated entities and $96.7 million related to our unconsolidated real estate ventures at our share), based on our current plans and estimates, which we anticipate will be primarily expended over the next two to three years. These capital expenditures are generally due as the work is performed, and we expect to finance them with debt proceeds, proceeds from asset recapitalizations and sales, and available cash.

Environmental Matters

Each of our properties has been subjected to varying degrees of environmental assessment at various times. The environmental assessments did not reveal any material environmental contamination that we believe would have a material adverse effect on our overall business, financial condition or results of operations. Nevertheless, there can be no assurance that the identification of new areas of contamination, changes in the extent or known scope of contamination, the discovery of additional sites or changes in cleanup requirements would not result in significant cost to us.

Other

There are various legal actions against us in the ordinary course of business. In our opinion, the outcome of such matters will not have a material adverse effect on our financial condition, results of operations or cash flows.

From time to time, we (or ventures in which we have an ownership interest) have agreed, and may in the future agree, to (1) guarantee portions of the principal, interest and other amounts in connection with their borrowings, (2) provide customary environmental indemnifications and nonrecourse carve-outs (e.g., guarantees against fraud, misrepresentation and bankruptcy) in connection with their borrowings and (3) provide guarantees to lenders and other third parties for the completion of development projects. We customarily have agreements with our outside partners whereby the partners agree to reimburse the joint venture or us for their share of any payments made under the guarantee. Amounts that may be required to be paid in future periods in relation to budget overruns or operating losses that also included in some of our guarantees are not estimable. Guarantees (excluding environmental) terminate either upon the satisfaction of specified circumstances or repayment of the underlying debt. As of September 30, 2017, the aggregate amount of our principal payment guarantees was approximately $89.0 million for our consolidated entities and $63.8 million for our unconsolidated real estate ventures.

As of September 30, 2017, we expect to fund additional capital to certain of our unconsolidated investments totaling approximately $50.6 million, , which we anticipate will be primarily expended over the next two to three years.

We are obligated under non-cancelable operating leases, primarily for ground leases on certain of our properties through 2112. As of September 30, 2017, future minimum rental payments under non-cancelable operating and capital leases are as follows:



Year ending December 31,	Amount
	(In thousands)
2017	$	1,974
2018	8,391
2019	8,170
2020	7,825
2021	7,496
2022	6,580
Thereafter	874,467
Total	$	914,903