Stock Based Awards and Other Equity Instruments - Summary of RSU Activity (Parenthetical) (Details) - Restricted Stock Units - shares		12 Months Ended
	Nov. 01, 2019	Dec. 31, 2020	Dec. 31, 2019		Dec. 31, 2018
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
RSUs withheld to satisfy withholding tax requirements		844,279	532,164		424,848
Unvested RSUs, Granted		6,397,000	4,688,000	[1]	3,302,000
Dividend Equivalents
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unvested RSUs, Granted	843,426

[1] Inclusive of 843,426 dividend equivalents issued to employees holding non-vested RSU grant awards in conjunction with our special cash dividend declared on November 1, 2019, which will be payable to the holder subject to, and only upon vesting of, the underlying awards.