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Leases

12 Months Ended

Dec. 31, 2018

LEASES

We lease our offices and other property through operating leases. Rental expense is charged to operations as incurred. For 2018, 2017 and 2016, total rental expense for operating leases was $11 million, $16 million and $17 million, respectively. At December 31, 2018, minimum payments for operating leases having initial non-cancelable terms in excess of one year were as follows:



(Millions of dollars)
2019	$	8
2020	6
2021	4
2022	2
2023	2
Thereafter	2
Total	$	24