Cash, Cash Equivalents, and Restricted Cash (Tables)

12 Months Ended

Dec. 31, 2021

Cash and Cash Equivalents [Abstract]

Schedule of Cash and Cash Equivalents

The following table sets forth the cash, cash equivalents, and restricted cash (in millions):

	December 31, 2021		December 31, 2020
Cash and cash equivalents:
Cash	$	219.2	$	56.7
Money market funds	556.4		372.1
Treasury bills	—		23.5
Total cash and cash equivalents	775.6		452.3
Restricted cash:
Fiduciary assets	25.0		12.1
Letters of credit and cash on deposit	18.1		28.0
Total restricted cash	43.1		40.1
Total cash, cash equivalents, and restricted cash	$	818.7	$	492.4

Restrictions on Cash and Cash Equivalents

The following table sets forth the cash, cash equivalents, and restricted cash (in millions):

	December 31, 2021		December 31, 2020
Cash and cash equivalents:
Cash	$	219.2	$	56.7
Money market funds	556.4		372.1
Treasury bills	—		23.5
Total cash and cash equivalents	775.6		452.3
Restricted cash:
Fiduciary assets	25.0		12.1
Letters of credit and cash on deposit	18.1		28.0
Total restricted cash	43.1		40.1
Total cash, cash equivalents, and restricted cash	$	818.7	$	492.4