Income Taxes (Tables)

3 Months Ended

Mar. 31, 2020

Income Tax Disclosure [Abstract]

Roll-forward of Unrecognized Tax Benefits and Associated Accrued Interest and Penalties

A roll-forward of unrecognized tax benefits and associated accrued interest and penalties is as follows:

(in millions)	Unrecognized Tax Benefits		Interest and Penalties		Total
Opening balance at January 1	$	14.4	$	2.0	$	16.4
Additions for tax positions of prior periods		0.0		0.0		0.0
Closing balance at March 31		14.4		2.0		16.4
Current		0.0		0.0		0.0
Non-current	$	14.4	$	2.0	$	16.4