Pension and Postretirement Health Care

The following table sets 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 months ended March 31, 2019 and 2018.

Table 66: Net Periodic Pension Expense (Benefit)



Net Periodic Pension Expense U.S. Plan	Three Months Ended March 31,
(In Millions)	2019			2018
Service Cost	$	10.4		$	10.4
Interest Cost	11.8			11.1
Expected Return on Plan Assets	(21.7		)	(22.0		)
Amortization
Net Actuarial Loss	4.3			7.1
Prior Service Cost	(0.1		)	(0.1		)
Net Periodic Pension Expense	$	4.7		$	6.5



Net Periodic Pension Expense Non-U.S. Plans	Three Months Ended March 31,
(In Millions)	2019			2018
Service Cost	$	0.5		$	0.4
Interest Cost	1.0			1.0
Expected Return on Plan Assets	(1.0		)	(1.1		)
Settlement Expense	—			—
Net Actuarial Loss Amortization	0.1			0.3
Net Periodic Pension Expense	$	0.6		$	0.6



Net Periodic Pension Expense Supplemental Plan	Three Months Ended March 31,
(In Millions)	2019		2018
Service Cost	$	1.0	$	1.1
Interest Cost	1.5		1.3
Amortization
Net Actuarial Loss	1.4		1.8
Prior Service Cost	—		—
Net Periodic Pension Expense	$	3.9	$	4.2



Net Periodic Postretirement Expense Postretirement Health Care Plan	Three Months Ended March 31,
(In Millions)	2019			2018
Service Cost	$	—		$	—
Interest Cost	0.3			0.3
Amortization
Net Actuarial (Gain)	(0.3		)	—
Prior Service Cost	$	—		$	—
Net Periodic Postretirement Expense	$	—		$	0.3

The components of net periodic pension expense are included in the line item “Employee Benefits” expense in the consolidated statements of income.

There were no contributions to the U.S. pension plan during the three months ended March 31, 2019. There was a $50 million contribution to the U.S. pension plan during the three months ended March 31, 2018.