Leases (Tables)

12 Months Ended

Dec. 31, 2012

Leases [Abstract]

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

At December 31, 2012, minimum payments for operating leases having initial or remaining non-cancelable terms in excess of one year were as follows: 

(Millions of dollars)
2013	$	14
2014	13
2015	12
2016	10
2017	10
Thereafter	36
Total	$	95