Employee Postretirement Benefits

9 Months Ended

Sep. 30, 2012

Employee Postretirement Benefits

Employee Postretirement Benefits

Employee Postretirement Benefits

The table below presents net periodic benefit cost information for defined benefit plans and other postretirement benefit plans:

	Defined Benefit Plans						Other Postretirement Benefit Plans
	Three Months Ended September 30
(Millions of dollars)	2012			2011			2012		2011
Service cost	$	10		$	14		$	3	$	3
Interest cost	69			77			9		10
Expected return on plan assets	(82		)	(87		)	—		—
Recognized net actuarial loss	27			23			—		—
Other	3			4			1		—
Net periodic benefit cost	$	27		$	31		$	13	$	13

	Defined Benefit Plans						Other Postretirement Benefit Plans
	Nine Months Ended September 30
(Millions of dollars)	2012			2011			2012		2011
Service cost	$	34		$	42		$	11	$	10
Interest cost	209			231			28		32
Expected return on plan assets	(247		)	(260		)	—		—
Recognized net actuarial loss	82			70			—		—
Other	20			6			—		2
Net periodic benefit cost	$	98		$	89		$	39	$	44

For the nine months ended September 30, 2012 and 2011, we made cash contributions of $95 million and $416 million, respectively, to our pension trusts. We currently anticipate contributing approximately $100 million for the full year 2012 to our pension trusts.