EMPLOYEE BENEFIT PLANS

9 Months Ended

Sep. 30, 2019

Defined Benefit Plan [Abstract]

EMPLOYEE BENEFIT PLANS

EMPLOYEE BENEFIT PLANS

The components of net periodic benefit cost related to the Company’s defined benefit plans consisted of the following:

(in millions)	Three Months Ended   September 30,						Nine Months Ended   September 30,
Pension Benefits	2019			2018			2019			2018
Components of net periodic benefit cost:
Service cost	$	10.9		$	11.9		$	32.7		$	35.5
Interest cost	2.0			1.5			6.2			4.3
Expected return on plan assets	(2.3		)	(2.2		)	(7.1		)	(6.4		)
Amortization of prior service cost and actuarial loss	0.1			0.1			0.2			0.3
Net periodic benefit cost	$	10.7		$	11.3		$	32.0		$	33.7

(in millions)	Three Months Ended   September 30,				Nine Months Ended   September 30,
Post-Retirement Medical Plan	2019		2018		2019		2018
Components of net periodic benefit cost:
Service cost	$	0.2	$	0.4	$	0.7	$	0.9
Interest cost	0.2		0.1		0.5		0.5
Amortization of prior service cost	0.1		0.2		0.4		0.5
Net periodic benefit cost	$	0.5	$	0.7	$	1.6	$	1.9