Share-Based Awards (Tables)

12 Months Ended

Dec. 31, 2022

Share-Based Payment Arrangement [Abstract]

Summary of Option Award Activity

The following table summarizes all option award activity for the year ended December 31, 2022:

	Number of Shares Subject to Existing Options (in thousands)	Weighted- Average Exercise Price Per Share		Weighted- Average Remaining Contractual Life (Years)	Aggregate Intrinsic Value (in millions)
Outstanding at January 1, 2022	25,746	$	72.86	7.48	$	354
Granted	7,527	45.22
Exercised	(1,129)	39.97
Forfeited or cancelled	(3,546)	83.46
Outstanding at December 31, 2022	28,598	44.90		7.08	15
Vested and exercisable at December 31, 2022	16,813	44.67		5.98	14

Fair Value of Options Granted, Estimated at Date of Grant Using Black Scholes Merton Option Pricing Model

The following assumptions were used to determine the fair value of all option awards granted for the periods presented:

	Year Ended December 31,
	2022	2021	2020
Expected volatility	55% – 61%	52% – 58%	45% – 52%
Risk-free interest rate	1.94% – 3.95%	0.57% – 1.15%	0.22% – 0.93%
Weighted-average expected life	4.50 – 6.00 years	4.50 – 5.75 years	4.50 – 5.50 years
Weighted-average fair value of options granted	$23.25	$54.55	$22.50

Summary of Restricted Stock Units Activity

The following table summarizes activity for all restricted stock units for the year ended December 31, 2022:

	Restricted Stock Units (in thousands)	Weighted- Average Grant- Date Fair Value
Unvested outstanding at January 1, 2022	6,074	$	66.51
Granted	12,066	41.72
Vested	(4,722)	52.39
Forfeited	(2,488)	59.48
Unvested outstanding at December 31, 2022	10,930	46.85

Effects of Share Based Compensation in Consolidated Statements of Operations

The following table presents the effects of share-based compensation expense in our consolidated statements of operations during the periods presented (in millions):

	Year Ended December 31,
	2022		2021		2020
Cost of revenue	$	16	$	9	$	6
Sales and marketing	63		42		28
Technology and development	165		103		67
General and administrative	189		122		69
Impairment and restructuring costs	2		1		—
Share-based compensation - continuing operations	435		277		170
Share-based compensation - discontinued operations	16		40		27
Total share-based compensation	$	451	$	317	$	197