Pension And Other Postretirement Benefits (Tables)

3 Months Ended

6 Months Ended

Jun. 30, 2011

Jun. 30, 2011

Pension And Other Postretirement Benefits

Components Of Net Periodic Benefit Cost

	Pension Benefits						Other Postretirement Benefits
	2011			2010			2011			2010
	(millions of dollars)
Service cost	$	7		$	7		$	1		$	1
Interest cost		27			25			9			9
Expected return on plan assets		(33	)		(25	)		(4	)		(4	)
Amortization of prior service cost		(1	)		—			(1	)		(1	)
Amortization of net actuarial loss		11			10			2			3
Plan amendment		—			1			—			—
Termination benefits		—			—			1			5
Net periodic benefit cost	$	11		$	18		$	8		$	13

	Pension Benefits						Other Postretirement Benefits
	2011			2010			2011			2010
	(millions of dollars)
Service cost	$	17		$	18		$	3		$	3
Interest cost		53			55			18			19
Expected return on plan assets		(64	)		(58	)		(9	)		(8	)
Amortization of prior service cost		(1	)		—			(2	)		(2	)
Amortization of net actuarial loss		24			21			6			6
Plan amendment		—			1			—			—
Termination benefits		—			—			1			5
Net periodic benefit cost	$	29		$	37		$	17		$	23