Stockholders' Equity - eXponential Stock Performance Plan (Details) $ in Millions				12 Months Ended			43 Months Ended
	Feb. 12, 2019 USD ($) tranche item	Jan. 02, 2019	May 24, 2018 USD ($)	Dec. 31, 2021 USD ($) shares	Dec. 31, 2020 shares	Dec. 31, 2019 shares	Dec. 31, 2021 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance shares authorized (in shares) | shares				0	0	0
Market capitalization goal for such tranche			$ 2,500.0
Market capitalization goal increment			$ 1,000.0
Recorded share-based compensation expense							$ 230.3
Number of awards expected to vest | shares				1,100,000			1,100,000
eXponential Stock Units | 2019 eXponential Stock Performance Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance shares authorized (in shares) | shares				40,000
Expiration period	9 years
Number of vesting tranches of share-based awards | tranche	12
Market capitalization goal for such tranche	$ 2,500.0
Number of performance goals, revenue | item	8
Number of performance goals, adjusted EBITDA | item	8
Market capitalization goal increment	$ 1,000.0
Anti-dilution provision, maximum shares growth rate per year		3.00%
Recorded share-based compensation expense				$ 177.4
Number of awards expected to vest | shares				1,300,000			1,300,000
Unrecognized stock-based compensation expense				$ 21.6			$ 21.6
Weighted average period over which costs are recognized				2 years 7 days
eXponential Stock Units | 2019 eXponential Stock Performance Plan | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance shares authorized (in shares) | shares				100,000