Employee Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2017

Defined Benefit Plan [Abstract]

Schedule of Net Periodic Benefit Costs

The following table provides the components of the net periodic benefit cost (credit) for the defined benefit pension and OPEB plans.

	Three Months Ended June 30
	Pension Benefits
	U.S. Plans						U.K. Plan						OPEB
	2017			2016			2017			2016			2017			2016
	(in millions of dollars)
Service Cost	$	1.9		$	1.8		$	—		$	—		$	—		$	—
Interest Cost	21.1			21.3			1.5			1.8			1.5			1.8
Expected Return on Plan Assets	(25.7		)	(25.7		)	(1.8		)	(2.7		)	(0.1		)	(0.1		)
Amortization of:
Net Actuarial Loss	4.9			4.0			0.1			—			—			—
Prior Service Credit	—			—			—			—			(0.1		)	(0.1		)
Plan Amendment	—			—			—			—			—			0.9
Total	$	2.2		$	1.4		$	(0.2	)	$	(0.9	)	$	1.3		$	2.5

	Six Months Ended June 30
	Pension Benefits
	U.S. Plans						U.K. Plan						OPEB
	2017			2016			2017			2016			2017			2016
	(in millions of dollars)
Service Cost	$	3.9		$	3.5		$	—		$	—		$	—		$	—
Interest Cost	42.2			42.6			3.0			3.7			3.0			3.6
Expected Return on Plan Assets	(51.5		)	(51.4		)	(3.8		)	(5.4		)	(0.3		)	(0.3		)
Amortization of:
Net Actuarial Loss	9.8			8.1			0.3			—			—			—
Prior Service Credit	(0.1		)	(0.1		)	—			—			(0.2		)	(0.1		)
Plan Amendment	—			—			—			—			—			0.9
Total	$	4.3		$	2.7		$	(0.5	)	$	(1.7	)	$	2.5		$	4.1