Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2024

Share-Based Payment Arrangement [Abstract]

Stock-Based Compensation Expense

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

	Year Ended December 31,
	2022		2023		2024
Cost of sales	$	757	$	836	$	838
Fulfillment	2,745		3,090		2,973
Technology and infrastructure	10,621		13,434		12,150
Sales and marketing	3,875		4,623		4,084
General and administrative	1,623		2,040		1,966
Total stock-based compensation expense (1)	$	19,621	$	24,023	$	22,011

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(1)The related tax benefits were $4.3 billion, $5.4 billion, and $5.0 billion for 2022, 2023, and 2024.

Summary of Restricted Stock Unit Activity

The following table summarizes our restricted stock unit activity (in millions):

	Number of Units	Weighted Average Grant-Date Fair Value
Outstanding as of January 1, 2022	279.9	$	134
Units granted	262.8	142
Units vested	(113.3)	114
Units forfeited	(45.0)	143
Outstanding as of December 31, 2022	384.4	144
Units granted	218.1	106
Units vested	(139.9)	143
Units forfeited	(56.8)	135
Outstanding as of December 31, 2023	405.8	125
Units granted	126.9	183
Units vested	(209.7)	132
Units forfeited	(39.9)	133
Outstanding as of December 31, 2024	283.1	145

Scheduled Vesting of Outstanding Restricted Stock Units

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

	Year Ended
	2025	2026	2027	2028	2029	Thereafter	Total
Scheduled vesting — restricted stock units	146.0	88.5	34.3	11.5	1.4	1.4	283.1