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Income Taxes - Reconciliation of Statutory Federal Income Tax Rate with Effective Income Tax Rate (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Statutory tax rate	21.00%	21.00%	21.00%
State income taxes, net	(1.30%)	1.80%	0.80%
Foreign rate differential	(0.30%)	2.80%	(0.70%)
Foreign income inclusion	0.70%	5.20%	4.40%
Foreign tax credit	(0.80%)	(4.30%)	(4.50%)
Reserve for uncertain tax positions	(2.40%)	11.50%	9.30%
Valuation allowance	(1.70%)	9.90%	0.20%
Impact on deferred taxes of enacted tax law and rate changes	(0.50%)	3.30%	(1.30%)
Tax credits and incentives	(1.50%)	(7.20%)	(9.20%)
Mark-to market on investment in Consensus	(18.00%)	0.00%	0.00%
Return to provision adjustments	0.50%	2.40%	0.20%
Executive compensation	0.70%	2.70%	5.30%
Other	(0.40%)	(0.20%)	(0.40%)
Effective tax rates	(4.00%)	48.90%	25.10%

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to Subpart F income inclusion.

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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