Earnings Per Share - Computation of Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Basic earnings per share:
Net income	$ 1,440,951	$ 1,353,013	$ 3,038,398	$ 3,059,728
Weighted-average shares of common stock outstanding (in shares)	444,557	443,159	444,352	443,192
Basic earnings per share (dollars per share)	$ 3.24	$ 3.05	$ 6.84	$ 6.90
Diluted earnings per share:
Net income	$ 1,440,951	$ 1,353,013	$ 3,038,398	$ 3,059,728
Shares used in computation:
Weighted-average shares of common stock outstanding (in shares)	444,557	443,159	444,352	443,192
Employee stock options (in shares)	5,612	11,970	7,226	12,193
Weighted-average number of shares (in shares)	450,169	455,129	451,578	455,385
Diluted earnings per share (dollars per share)	$ 3.20	$ 2.97	$ 6.73	$ 6.72