CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($)
Statement of Cash Flows [Abstract]
Transfer to investments	$ 7.0
Common stock repurchases	0.0	[1]
Restricted cash and cash equivalents, current	1.0
Restricted cash and cash equivalents, non-current	$ 1.0

[1] Includes $19.3 in shares repurchased through our share repurchase program. On March 11, 2021, the share repurchase program expired with no further repurchases. Refer to Note 2, “Significant Accounting Policies” for further information.