Stockholders' Equity (Tables)

9 Months Ended

Sep. 30, 2022

Equity [Abstract]

Stock-Based Compensation Expense

Stock-based compensation expense is as follows (in millions):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2021		2022		2021		2022
Cost of sales	$	126	$	190	$	361	$	549
Fulfillment	473		727		1,381		1,988
Technology and content	1,627		3,036		4,742		7,495
Sales and marketing	657		1,128		1,804		2,783
General and administrative	297		475		789		1,200
Total stock-based compensation expense	$	3,180	$	5,556	$	9,077	$	14,015

Restricted Stock Unit Activity

The following table summarizes our restricted stock unit activity for the nine months ended September 30, 2022 (in millions):

	Number of Units	Weighted-Average Grant-Date Fair Value
Outstanding as of December 31, 2021	279.9	$	134
Units granted	224.1	150
Units vested	(69.1)	109
Units forfeited	(35.6)	143
Outstanding as of September 30, 2022	399.3	147

Scheduled Vesting for Outstanding Restricted Stock Units

Scheduled vesting for outstanding restricted stock units as of September 30, 2022, is as follows (in millions):

	Three Months Ended December 31,	Year Ended December 31,
	2022	2023	2024	2025	2026	Thereafter	Total
Scheduled vesting — restricted stock units	44.0	137.2	133.0	56.5	24.7	3.9	399.3

Changes in Stockholders' Equity

The following table shows changes in stockholders’ equity (in millions):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2021		2022		2021		2022
Total beginning stockholders’ equity	$	114,803	$	131,402	$	93,404	$	138,245
Beginning common stock	106		107		105		106
Stock-based compensation and issuance of employee benefit plan stock	—		—		1		1
Ending common stock	106		107		106		107
Beginning treasury stock	(1,837)		(7,837)		(1,837)		(1,837)
Common stock repurchased	—		—		—		(6,000)
Ending treasury stock	(1,837)		(7,837)		(1,837)		(7,837)
Beginning additional paid-in capital	48,623		63,871		42,765		55,437
Stock-based compensation and issuance of employee benefit plan stock	3,155		5,548		9,013		13,982
Ending additional paid-in capital	51,778		69,419		51,778		69,419
Beginning accumulated other comprehensive income (loss)	(525)		(4,782)		(180)		(1,376)
Other comprehensive income (loss)	(550)		(2,333)		(895)		(5,739)
Ending accumulated other comprehensive income (loss)	(1,075)		(7,115)		(1,075)		(7,115)
Beginning retained earnings	68,436		80,043		52,551		85,915
Net income (loss)	3,156		2,872		19,041		(3,000)
Ending retained earnings	71,592		82,915		71,592		82,915
Total ending stockholders’ equity	$	120,564	$	137,489	$	120,564	$	137,489