EMPLOYEE BENEFIT PLANS (Tables)

9 Months Ended

Sep. 30, 2011

EMPLOYEE BENEFIT PLANS

Components of net periodic benefit cost

	Pension Benefits						Other Postretirement Benefits
Millions of dollars	2011			2010			2011		2010
Three months ended September 30,
Service cost	$	4.5		$	4.0		$	1.0	$	0.9
Interest cost	10.4			9.3			3.2		2.7
Expected return on assets	(15.3		)	(13.2		)	-		-
Prior service cost amortization	1.7			1.5			0.2		0.3
Transition obligation amortization	-			-			0.1		0.2
Amortization of actuarial loss	3.1			3.4			0.1		(0.2		)
Net periodic benefit cost	$	4.4		$	5.0		$	4.6	$	3.9
Nine months ended September 30,
Service cost	$	13.7		$	13.5		$	3.2	$	3.1
Interest cost	32.6			33.0			9.2		8.9
Expected return on assets	(47.7		)	(46.1		)	-		-
Prior service cost amortization	5.3			5.2			0.8		0.8
Transition obligation amortization	-			-			0.5		0.5
Amortization of actuarial loss	9.1			12.0			0.3		-
Net periodic benefit cost	$	13.0		$	17.6		$	14.0	$	13.3