Foreign Currency (Tables)

9 Months Ended

Sep. 30, 2011

Foreign Currency [Abstract]

Pre-tax foreign currency gain (losses)

	Three Months					Nine Months
	Ended September 30,					Ended September 30,
	2011			2010		2011			2010
				(Millions of dollars)
Pre-tax foreign currency gains (losses)	$	(9	)	$	5	$	(18	)	$	(10	)