LEASES

We lease our offices and other property through operating leases. Rental expense is charged to operations as incurred. For 2016, 2015 and 2014, total rental expense for operating leases was $17 million, $16 million and $17 million, respectively. At December 31, 2016, minimum payments for operating leases having initial non-cancelable terms in excess of one year were as follows:



(Millions of dollars)
2017	$	15
2018	14
2019	13
2020	12
2021	12
Thereafter	7
Total	$	73