Stockholders' Equity (Tables)

3 Months Ended

Mar. 31, 2024

Equity [Abstract]

Stock-Based Compensation Expense

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

	Three Months Ended March 31,
	2023		2024
Cost of sales	$	165	$	174
Fulfillment	603		636
Technology and infrastructure	2,574		2,772
Sales and marketing	993		932
General and administrative	413		447
Total stock-based compensation expense	$	4,748	$	4,961

Restricted Stock Unit Activity

The following table summarizes our restricted stock unit activity for the three months ended March 31, 2024 (in millions):

	Number of Units	Weighted-Average Grant-Date Fair Value
Outstanding as of December 31, 2023	405.8	$	125
Units granted	10.7	166
Units vested	(20.0)	140
Units forfeited	(11.6)	126
Outstanding as of March 31, 2024	384.9	126

Scheduled Vesting for Outstanding Restricted Stock Units

Scheduled vesting for outstanding restricted stock units as of March 31, 2024, is as follows (in millions):

	Nine Months Ended December 31,	Year Ended December 31,
	2024	2025	2026	2027	2028	Thereafter	Total
Scheduled vesting — restricted stock units	195.0	122.0	50.1	14.0	2.1	1.7	384.9

Changes in Stockholders' Equity

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

	Three Months Ended March 31,
	2023		2024
Total beginning stockholders’ equity	$	146,043	$	201,875
Beginning and ending common stock	108		109
Beginning and ending treasury stock	(7,837)		(7,837)
Beginning additional paid-in capital	75,066		99,025
Stock-based compensation and issuance of employee benefit plan stock	4,797		4,913
Ending additional paid-in capital	79,863		103,938
Beginning accumulated other comprehensive income (loss)	(4,487)		(3,040)
Other comprehensive income (loss)	514		(558)
Ending accumulated other comprehensive income (loss)	(3,973)		(3,598)
Beginning retained earnings	83,193		113,618
Net income	3,172		10,431
Ending retained earnings	86,365		124,049
Total ending stockholders’ equity	$	154,526	$	216,661