Retirement Plans

6 Months Ended

Jun. 30, 2020

Compensation And Retirement Disclosure [Abstract]

Retirement Plans

8. RETIREMENT PLANS

The components of total Net Periodic Benefit Cost associated with the Company’s defined benefit retirement plans are as follows (dollars in millions):

	Three months ended June 30						Six months ended June 30
	2020			2019			2020			2019
Service cost	$	5.2		$	4.5		$	10.5		$	9.0
Interest cost		4.7			5.2			9.5			10.3
Expected return on plan assets		(4.5	)		(3.9	)		(8.9	)		(7.7	)
Amortization of prior service cost		(0.4	)		0.1			(0.9	)		0.2
Amortization of actuarial loss		1.1			0.6			2.3			1.2
Net Periodic Benefit Cost	$	6.1		$	6.5		$	12.5		$	13.0

The Service cost and Amortization of prior service cost components in the table above are reported in Operating Income in the Consolidated Statements of Income. The remaining components - Interest cost, Expected return on plan assets and Amortization of actuarial loss - are reported as Other non-operating items, net in the Consolidated Statements of Income.