EMPLOYEE BENEFIT PLANS (Tables)

3 Months Ended

Mar. 31, 2019

Defined Benefit Plan [Abstract]

Schedule of net periodic benefit cost

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

(in millions)	Three Months Ended   March 31,
Pension Benefits	2019			2018
Components of net periodic benefit cost:
Service cost	$	10.9		$	11.8
Interest cost	2.1			1.4
Expected return on plan assets	(2.4		)	(2.1		)
Amortization of prior service cost and actuarial loss	0.1			0.1
Net periodic benefit cost	$	10.7		$	11.2

(in millions)	Three Months Ended   March 31,
Post-Retirement Medical Plan	2019		2018
Components of net periodic benefit cost:
Service cost	$	0.2	$	0.3
Interest cost	0.2		0.1
Amortization of prior service cost	0.1		0.2
Net periodic benefit cost	$	0.5	$	0.6