Foreign Currency (Tables)

6 Months Ended

Jun. 30, 2011

Foreign Currency [Abstract]

Pre-tax foreign currency gain (losses)

	Three Months						Six Months
	Ended June 30,						Ended June 30,
	2011			2010			2011			2010
	(Millions of dollars)
Pre-tax foreign currency gains (losses)	$	(8	)	$	(10	)	$	(9	)	$	(16	)