Benefit Plans (Tables)

3 Months Ended

Mar. 29, 2015

Benefit Plans [Abstract]

Components of net periodic benefit cost

Components of Net Periodic Benefit Cost

	Pension Benefits
	Three Months Ended
	Mar. 29, 2015			Mar. 30, 2014
	(millions of dollars)
Service cost	$	2.6		$	2.0
Interest cost		3.9			3.1
Expected return on plan assets		(5.1	)		(4.3	)
Amortization:
Prior service cost		0.3			0.3
Recognized net actuarial loss		2.8			1.7
Net periodic benefit cost	$	4.5		$	2.8

	Other Benefits
	Three Months Ended
	Mar. 29, 2015			Mar. 30, 2014
		(millions of dollars)
Service cost	$	0.1		$	0.1
Interest cost		0.1			0.1
Amortization:
Prior service cost		(0.8	)		(0.8	)
Recognized net actuarial (gain)/loss		-			-
Net periodic benefit cost	$	(0.6	)	$	(0.6	)