Commitments and Contingencies (Tables)

9 Months Ended

Sep. 30, 2015

Commitments and Contingencies [Abstract]

Schedule of environmental loss contingencies [Table Text Block]

The following table summarizes the activity in our accrued environmental liability included in “Accrued liabilities” and “Other liabilities:”

	Nine Months Ended
	September 30,
Millions of dollars	2015		2014
Beginning balance	$	106	$	120
Additional provision		6		- -
Changes in estimates		(3)		- -
Amounts paid		(6)		(5)
Foreign exchange effects		(6)		(7)
Other		- -		(3)
Ending balance	$	97	$	105