Benefit Plans (Tables)

3 Months Ended

Apr. 02, 2017

Benefit Plans [Abstract]

Components of net periodic benefit cost

Components of Net Periodic Benefit Cost

	Pension Benefits
	Three Months Ended
	Apr. 2, 2017			Apr. 3, 2016
	(millions of dollars)
Service cost	$	2.1		$	2.3
Interest cost		3.1			3.4
Expected return on plan assets		(4.5	)		(4.6	)
Amortization:
Prior service cost		0.5			0.2
Recognized net actuarial loss		2.1			2.6
Net periodic benefit cost	$	3.3		$	3.9

	Other Benefits
	Three Months Ended
	Apr. 2, 2017			Apr. 3, 2016
	(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		(0.1	)		-
Net periodic benefit cost	$	(0.7	)	$	(0.6	)