Retirement benefits

6 Months Ended

Dec. 31, 2018

Net pension benefit cost recognized included the following components:



	Three Months Ended						Six Months Ended
	December 31,						December 31,
	2018			2017			2018			2017
Service cost	$	17,983		$	18,242		$	38,492		$	41,300
Interest cost	40,551			36,138			80,417			71,824
Expected return on plan assets	(62,701		)	(65,350		)	(125,578		)	(128,526		)
Amortization of prior service cost	1,677			1,511			3,325			3,615
Amortization of net actuarial loss	30,692			35,468			59,985			74,150
Amortization of initial net obligation	4			5			9			10
Net pension benefit cost	$	28,206		$	26,014		$	56,650		$	62,373

During the three months ended December 31, 2018 and 2017, the Company recognized $631 and $1,091, respectively, in expense related to other postretirement benefits. During the six months ended December 31, 2018 and 2017, the Company recognized $1,281 and $2,180, respectively, in expense related to other postretirement benefits. Components of net pension benefit cost and other postretirement benefit cost, other than service cost, are included in other (income) expense, net in the Consolidated Statement of Income.

In September 2018, the Company made a discretionary $200 million cash contribution to its domestic qualified defined benefit plan.