Pension and Postretirement Plans (Tables)

3 Months Ended

Mar. 31, 2013

Pension and Postretirement Plans

Net periodic pension and postretirement health care benefit costs

													U.S.
							International						Postretirement
	U.S. Pension						Pension						Health Care
(millions)	2013			2012			2013			2012			2013			2012
Service cost	$	17.1		$	12.6		$	9.1		$	7.3		$	1.5		$	1.3
Interest cost on benefit obligation	21.2			22.3			11.9			11.9			2.7			3.2
Expected return on plan assets	(32.5		)	(31.8		)	(11.8		)	(10.5		)	(0.3		)	(0.3		)
Recognition of net actuarial loss	15.6			11.3			2.9			1.0			0.2			0.1
Amortization of prior service benefit	(1.7		)	(1.0)			(0.1		)	(0.1		)	(0.1		)	—
	$	19.7		$	13.4		$	12.0		$	9.6		$	4.0		$	4.3