POSTRETIREMENT BENEFITS (Tables)

12 Months Ended

Dec. 31, 2021

POSTRETIREMENT BENEFITS Disclosure [Abstract]

Postretirement plan change in benefit obligation

Changes in the benefit obligation were as follows:

	December 31, 2021						December 31, 2020
	U.S.		Foreign		Total		U.S.		Foreign		Total
Change in Benefit Obligation	($ in millions)
Benefit obligation at beginning of year	$	44.2	$	11.9	$	56.1	$	41.8	$	10.9	$	52.7
Service cost	0.9		0.4		1.3		0.9		0.3		1.2
Interest cost	0.7		0.3		1.0		1.1		0.3		1.4
Actuarial (gain) loss	(2.7)		(1.1)		(3.8)		3.5		0.6		4.1
Benefits paid	(3.8)		(0.3)		(4.1)		(3.1)		(0.4)		(3.5)
Foreign currency translation adjustments	—		—		—		—		0.2		0.2
Benefit obligation at end of year	$	39.3	$	11.2	$	50.5	$	44.2	$	11.9	$	56.1

	December 31, 2021						December 31, 2020
	U.S.		Foreign		Total		U.S.		Foreign		Total
	($ in millions)
Funded status	$	(39.3)	$	(11.2)	$	(50.5)	$	(44.2)	$	(11.9)	$	(56.1)

Amounts recognized in consolidated balance sheet

Amounts recognized in the consolidated balance sheets consisted of:

	December 31, 2021						December 31, 2020
	U.S.		Foreign		Total		U.S.		Foreign		Total
	($ in millions)
Accrued benefit in current liabilities	$	(3.0)	$	(0.4)	$	(3.4)	$	(3.1)	$	(0.3)	$	(3.4)
Accrued benefit in noncurrent liabilities	(36.3)		(10.8)		(47.1)		(41.1)		(11.6)		(52.7)
Accumulated other comprehensive loss	20.0		1.0		21.0		24.9		2.1		27.0
Net balance sheet impact	$	(19.3)	$	(10.2)	$	(29.5)	$	(19.3)	$	(9.8)	$	(29.1)

Components of net periodic benefit cost

	Years Ended December 31,
	2021		2020		2019
Components of Net Periodic Benefit Cost	($ in millions)
Service cost	$	1.3	$	1.2	$	1.1
Interest cost	1.0		1.4		1.7
Amortization of prior service cost	0.1		0.1		—
Recognized actuarial loss	2.1		2.2		2.1
Net periodic benefit cost	$	4.5	$	4.9	$	4.9
Included in Other Comprehensive Income (Loss) (Pretax)
Liability adjustment	$	(3.8)	$	4.1	$	6.2
Amortization of prior service costs and actuarial losses	(2.2)		(2.3)		(2.1)

Schedule of actuarial assumption

	December 31,
Weighted-Average Assumptions	2021		2020		2019
Discount rate—periodic benefit cost	2.3	%	3.1	%	4.1	%
Discount rate—benefit obligation	2.8	%	2.3	%	3.1	%

Assumed healthcare cost trend rates

The assumed healthcare cost trend rates for pre-65 retirees were as follows:

	December 31,
	2021		2020
Healthcare cost trend rate assumed for next year	7.3	%	7.3	%
Rate that the cost trend rate gradually declines to	4.5	%	4.5	%
Year that the rate reaches the ultimate rate	2032		2031