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LEASES.

12 Months Ended

Dec. 31, 2019

LEASES.

All of our leases are operating leases and primarily consist of real estate leases for corporate offices, data centers, and other facilities. As of December 31, 2019, the weighted-average remaining lease term on our leases is approximately 6.8 and the weighted-average discount rate used to measure the lease liabilities is 3.5%.

Operating lease expense for the year ended December 31, 2019, 2018, and 2017 was $29.0 million, $40.1 million, and $36.0 million, respectively. Charges related to our operating leases that are variable, including variable common area maintenance charges and other management-related costs, and not included in the measurement of the lease liabilities, were $10.0 million for the year ended December 31, 2019.

We made lease payments of $29.5 million during the year ended December 31, 2019. Our future undiscounted cash flows related to our operating leases and the reconciliation to the operating lease liability as of December 31, 2019, are as follows:



(in millions)	12/31/2019
2020	$	26.6
2021	26.7
2022	23.8
2023	21.1
2024	19.6
Thereafter	46.6
Total future undiscounted cash flows	164.4
Less: imputed interest to be recognized in lease expense	(18.1		)
Operating lease liabilities, as reported	$	146.3