We had accrued liabilities related to uncertain tax positions totaling approximately $114.9 million as of March 31, 2019. These liabilities, which are reflected on our balance sheet, are not reflected in the table above since it is unclear when these liabilities will be paid.
As of March 31, 2019, we were contractually committed for $801.3 million of unaccrued capital expenditures, primarily for IBX equipment not yet delivered and labor not yet provided in connection with the work necessary to complete construction and open these IBX data centers prior to making them available to customers for installation. This amount, which is expected to be paid during the remainder of 2019 and thereafter, is reflected in the table above as "other contractual commitments."
We had other non-capital purchase commitments in place as of March 31, 2019, such as commitments to purchase power in select locations and other open purchase orders, which contractually bind us for goods or services to be delivered or provided during 2019 and beyond. Such other purchase commitments as of March 31, 2019, which total $889.7 million, are also reflected in the table above as "other contractual commitments."
Additionally, we entered into lease agreements in various locations for a total lease commitment of approximately $273.7 million, excluding potential lease renewals. These lease agreements will commence between fiscal years 2019 and 2020 with lease terms of 5 to 29 years, which are not reflected in the table above.
Critical Accounting Policies and Estimates
Our condensed consolidated financial statements and accompanying notes are prepared in accordance with U.S. GAAP. The preparation of our financial statements requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. On an ongoing basis, management evaluates the accounting policies, assumptions, estimates and judgments to ensure that our condensed consolidated financial statements are presented fairly and in accordance with U.S. GAAP. Management bases its assumptions, estimates and judgments on historical experience, current trends and various other factors that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. However, because future events and their effects cannot be determined with certainty, actual results may differ from these assumptions and estimates, and such differences could be material. Critical accounting policies for Equinix that affect our more significant judgment and estimates used in the preparation of our condensed consolidated financial statements include accounting for income taxes, accounting for business combinations, accounting for impairment of goodwill and accounting for property, plant and equipment, which are discussed in more detail under the caption "Critical Accounting Policies and Estimates" in Management's Discussion and Analysis of Financial Condition and Results of Operations, set forth in Part II Item 7, of our Annual Report on Form 10-K for the year ended December 31, 2018.
Recent Accounting Pronouncements
See Note 1 of Notes to Condensed Consolidated Financial Statements in Part I Item 1 of this Quarterly Report on Form 10-Q.
Quantitative and Qualitative Disclosures about Market Risk
There have been no significant changes in our market risk, investment portfolio risk, interest rate risk, foreign currency risk and commodity price risk exposures and procedures during the three months ended March 31, 2019 as compared to the respective risk exposures and procedures disclosed in Quantitative and Qualitative Disclosures About Market Risk, set forth in Part II Item 7A, of our Annual Report on Form 10-K for the year ended December 31, 2018, other than factors discussed below.
Foreign Currency Risk
To help manage the exposure to foreign currency exchange rate fluctuations, we have implemented a number of hedging programs, in particular (i) a cash flow hedging program to hedge the forecasted revenues and expenses in our EMEA region, (ii) a balance sheet hedging program to hedge the re-measurement of monetary assets and liabilities denominated in foreign currencies, and (iii) a net investment hedging program to hedge the long term investments in our foreign subsidiaries. Our hedging programs reduce, but do not entirely eliminate, the impact of currency exchange rate movements and its impact on the consolidated statements of operations.