Pension and Postretirement Health Care (Tables)

6 Months Ended

Jun. 30, 2018

The following tables set forth the net periodic pension and postretirement benefit expense for Northern Trust’s U.S. and non-U.S. pension plans, supplemental pension plan, and postretirement health care plan for the three and six months ended June 30, 2018 and 2017.

Table 61: Net Periodic Pension Expense (Benefit)



Net Periodic Pension Expense U.S. Plan	Three Months Ended June 30,						Six Months Ended June 30,
(In Millions)	2018			2017			2018			2017
Service Cost	$	10.3		$	9.6		$	20.7		$	19.2
Interest Cost	11.1			11.5			22.2			23.0
Expected Return on Plan Assets	(22.1		)	(23.5		)	(44.1		)	(47.0		)
Amortization
Net Actuarial Loss	7.0			4.8			14.1			9.6
Prior Service Cost	(0.1		)	(0.1		)	(0.2		)	(0.2		)
Net Periodic Pension Expense	$	6.2		$	2.3		$	12.7		$	4.6



Net Periodic Pension Expense Non-U.S. Plans	Three Months Ended June 30,						Six Months Ended June 30,
(In Millions)	2018			2017			2018			2017
Service Cost	$	0.4		$	—		$	0.8		$	—
Interest Cost	1.0			1.0			2.0			1.9
Expected Return on Plan Assets	(1.1		)	(1.1		)	(2.2		)	(2.2		)
Settlement Expense	0.4			0.2			0.4			0.2
Net Actuarial Loss Amortization	0.3			0.3			0.6			0.6
Net Periodic Pension Expense	$	1.0		$	0.4		$	1.6		$	0.5



Net Periodic Pension Expense Supplemental Plan	Three Months Ended June 30,				Six Months Ended June 30,
(In Millions)	2018		2017		2018		2017
Service Cost	$	1.1	$	0.9	$	2.2	$	1.8
Interest Cost	1.4		1.3		2.7		2.6
Amortization
Net Actuarial Loss	1.8		1.4		3.6		2.8
Prior Service Cost	0.1		—		0.1		—
Net Periodic Pension Expense	$	4.4	$	3.6	$	8.6	$	7.2



Net Periodic Postretirement Expense Postretirement Health Care Plan	Three Months Ended June 30,				Six Months Ended June 30,
(In Millions)	2018		2017		2018		2017
Interest Cost	$	0.4	$	0.4	$	0.7	$	0.8
Net Periodic Postretirement Expense	$	0.4	$	0.4	$	0.7	$	0.8