Earnings Per Share - Calculation of EPS (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Basic earnings per share:
Net income	$ 5,116,228	$ 2,761,395	$ 1,866,916
Weighted-average common shares outstanding (in shares)	443,155	440,922	437,799
Basic earnings per share (in USD per share)	$ 11.55	$ 6.26	$ 4.26
Diluted earnings per share:
Net income	$ 5,116,228	$ 2,761,395	$ 1,866,916
Shares used in computation:
Weighted-average common shares outstanding (in shares)	443,155	440,922	437,799
Employee stock options (in shares)	12,217	13,286	13,966
Weighted-average number of shares (in shares)	455,372	454,208	451,765
Diluted earnings per share (in USD per share)	$ 11.24	$ 6.08	$ 4.13