Operating leases (Tables)

12 Months Ended

Dec. 31, 2014

Leases [Abstract]

Minimum payments for operating leases having initial or remaining non-cancelable terms in excess of one year

Minimum payments for operating leases having initial or remaining non-cancelable terms in excess of one year are:

Years ended December 31,
(Millions of dollars)
2015		2016		2017		2018		2019		Thereafter		Total
$	229	$	174	$	125	$	92	$	65	$	189	$	874