ACCUMULATED OTHER COMPREHENSIVE LOSS (Tables)

9 Months Ended

Sep. 30, 2021

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

Schedule of Accumulated Other Comprehensive Loss

A roll-forward of the Company's accumulated other comprehensive loss as of September 30, 2021 is as follows:

	Foreign Currency Translation		Actuarial (Loss) Gain on Post-retirement Benefits		Other		Accumulated Other Comprehensive Loss
Balance at January 1, 2021	$	(17.1)	$	(260.5)	$	(0.3)	$	(277.9)
Foreign currency translation adjustment, net of tax (b)	(6.0)		—		—		(6.0)
Amortization of pension related costs, net of tax (a) (b)	—		10.5		—		10.5
Other comprehensive (loss) gain	$	(6.0)	$	10.5	$	—	$	4.5
Balance at September 30, 2021	$	(23.1)	$	(250.0)	$	(0.3)	$	(273.4)

(a) Amounts represent the change in accumulated other comprehensive loss as a result of the amortization of actuarial losses (gains) arising during each year related to the Company’s pension and other post-retirement plans. See Note 10, "Pension and Post-retirement Benefits," for further information on the Company’s pension and other post-retirement plans.

(b) Amounts presented are net of tax expense of nil for the nine months ended September 30, 2021.