Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2021

Accounting Policies [Abstract]

Cash and cash equivalents

The following represents the Company's cash, cash equivalents and restricted cash as of December 31, 2021 and 2020, ($ in millions).

	December 31,
	2021		2020
Cash and cash equivalents	$	270.6	$	570.8
Restricted cash	—		0.6
Total cash, cash equivalents and restricted cash	$	270.6	$	571.4

Restricted cash

The following represents the Company's cash, cash equivalents and restricted cash as of December 31, 2021 and 2020, ($ in millions).

	December 31,
	2021		2020
Cash and cash equivalents	$	270.6	$	570.8
Restricted cash	—		0.6
Total cash, cash equivalents and restricted cash	$	270.6	$	571.4

Property and equipment, net

Depreciation is calculated using the straight-line method over the estimated useful life of the assets at the following rates:

	Years
Computers and electronic equipment	3
Furniture and equipment	6
Leasehold improvements	Shorter of lease term or useful life

Property and equipment, net consists of the following ($ in millions):

	December 31,
	2021		2020
Computer equipment and software	$	11.7	$	4.8
Leasehold improvements	4.6		2.2
Furniture and equipment	1.3		1.1
	17.6		8.1
Accumulated depreciation	(5.9)		(2.4)
Property and equipment, net	$	11.7	$	5.7