Income Taxes (Notes)	9 Months Ended
	Sep. 30, 2021
Income Tax Disclosure [Abstract]
Income Tax	Income Taxes The effective tax rate was 47.6% and 28.9% for the three and nine months ended September 30, 2021, compared to 16.8% and 11.4% for the respective periods in 2020. The effective tax rate for the nine months ended September 30, 2021 was impacted by the tax effect of the equity consideration included in the Aggregate Stock Consideration subject to vesting conditions, discrete income tax items related to excess tax benefits from the vesting of our annual restricted stock award grants and stock option exercises, and the release of domestic and foreign tax valuation allowances. The effective tax rate for the nine months ended September 30, 2020 was primarily impacted by the tax benefit of net operating loss carrybacks at a 35% tax rate, as a result of the Coronavirus Aid, Relief, and Economic Security Act, enacted on March 27, 2020.