Benefit Plans (Tables)

3 Months Ended

Mar. 30, 2014

Benefit Plans [Abstract]

Components of net periodic benefit cost

Components of Net Periodic Benefit Cost

	Pension Benefits						Other Benefits
	Three Months Ended						Three Months Ended
(millions of dollars)	March 30, 2014			March 31, 2013			March 30, 2014			March 31, 2013
Service cost	$	2.0		$	2.3		$	0.1		$	0.2
Interest cost		3.1			2.8			0.1			0.1
Expected return on plan assets		(4.3	)		(3.7	)		--			--
Amortization:
Prior service cost		0.3			0.3			(0.8	)		(0.8	)
Recognized net actuarial loss		1.7			3.4			--			--
Net periodic benefit cost	$	2.8		$	5.1		$	(0.6	)	$	(0.5	)