Stock Based Awards and Other Equity Instruments - Summary of Stock Option Activity (Details) - Stock Options $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($) $ / shares shares
Options Outstanding
Options Outstanding, Beginning balance | shares	5,671
Options Outstanding, Granted | shares	841	[1]
Options Outstanding, Exercised | shares	(13)	[2]
Options Outstanding, Cancelled or expired | shares	(1,037)
Options Outstanding, Ending balance | shares	5,462
Options Outstanding, Exercisable | shares	3,931
Options Outstanding, Vested and expected to vest | shares	5,316	[3]
Weighted Average Exercise Price per share
Options Outstanding, Weighted Average Exercise Price, Beginning Balance | $ / shares	$ 47.03
Options Granted, Weighted Average Exercise Price | $ / shares	20.00	[1]
Options Exercised, Weighted Average Exercise Price | $ / shares	24.94	[2]
Options Cancelled or expired, Weighted Average Exercise Price | $ / shares	44.06
Options Outstanding, Weighted Average Exercise Price, Ending balance | $ / shares	43.48
Options Exercisable, Weighted Average Exercise Price | $ / shares	49.19
Options Vested and expected to vest, Weighted Average Exercise Price | $ / shares	$ 43.93	[3]
Weighted Average Remaining Contractual Life and Aggregate Intrinsic Value
Options Outstanding, Weighted Average Remaining Contractual Life	5 years 1 month 6 days
Options Exercisable, Weighted Average Remaining Contractual Life	3 years 7 months 6 days
Options Vested and expected to vest, Weighted Average Remaining Contractual Life	5 years	[3]
Options Outstanding, Aggregate Intrinsic Value | $	$ 0
Options Exercisable, Aggregate Intrinsic Value | $	0
Options Vested and expected to vest, Aggregate Intrinsic Value | $	$ 0	[3]

[1] Inclusive of approximately 516,000 stock options awarded to Matt Goldberg, our CEO, during July 2022. The estimated grant-date fair value per option, using a Black-Scholes option pricing model was $9.23. These stock options shall vest over four years, with 25% vesting on July 1, 2023 and 6.25% of the remaining award vesting in equal quarterly installments commencing thereafter, subject to the CEO’s continuous employment with the Company. The estimated grant-date fair value of this award will be amortized on a straight-line basis over the requisite service period through July 1, 2026.

[2] Inclusive of approximately 10,000 stock options for the year ended December 31, 2022, which were not converted into shares due to net share settlement in order to cover the aggregate exercise price and the required amount of employee withholding taxes. Potential shares which had been convertible under stock options that were withheld under net share settlement remain in the authorized but unissued pool under the 2018 Plan and can be reissued by the Company. Total payments for the employees’ tax obligations to the taxing authorities due to net share settlements are reflected as a financing activity within the consolidated statements of cash flows.

[3] The Company accounts for forfeitures as they occur, rather than estimate expected forfeitures as allowed under GAAP and therefore do not include a forfeiture rate in our vested and expected to vest calculation unless necessary for a performance condition award.